Figuring Out How To Make Magnesia Bricks

Have you been thinking about being familiar with how https://cheapfirebricks.com/magnesia-bricks/ are manufactured? People are curious about this topic for a number of reasons. Some people want to learn more about this topic because they are curious. Others want to find out more because they need to make these bricks themselves. Irrespective of what your reasons are, there are numerous resources that you can use if you want to discover ways to make magnesia bricks.

Examine Information Given By Manufacturers

A lot of the manufacturers that can make these bricks provide more information concerning the processes that they can use. Whilst you won’t learn everything that you would like to understand from all of these manufacturers, you will learn a great deal.

One thing you will understand is the fact that every manufacturer has their very own unique process. Not every manufacturers utilize the same methods if they are making magnesia bricks. When you take a look at a couple of manufacturers, you’ll have the ability to find out about the variations within their methods.

Read Articles Regarding The Process

You will discover in-depth, informative articles on a myriad of subjects, including making magnesia bricks. Not every one of these submissions are directed at laymen, however, these submissions are still chock packed with useful information.

Since these articles can be hard to digest, it’s a good idea to read them if you have some spare time. If you’re capable of carefully read the articles you’re taking a look at, you’ll be able to get more out of them. Get More Information From Here: CheapFireBricks.com

Watch Videos That Showcase This Method

If you truly want to learn how these bricks are made, why not watch this process yourself? There are numerous videos that demonstrate these bricks are made. While many of these videos are edited, they could still provide you with a clear picture in the process and what it is like.

Watching these sorts of videos may be informative, but it is also very entertaining. Try to consider all types of different videos to enable you to discover more about them. The more videos you watch, the greater you’ll be capable of learn.

See If You Can Tour A Facility That Makes These Bricks

Determine whether you will find a facility that produces these bricks in your area. Should you live near a facility like this, you need to find out if it could be possible so that you can tour it. Visiting the facility will help you to see many aspects of the development process up close.

Touring these facilities isn’t going to be a possibility that each and every person has. Nevertheless, if you have the opportunity to take action such as this, you need to make the most of it. Find out if it will be possible to go to a neighborhood facility to see what you can learn while you are there.

As you have seen, figuring out how to make magnesia bricks doesn’t need to be a massive challenge. Though it isn’t necessarily very easy to produce these bricks, there are tons of resources available to the people that want to make these bricks themselves. Make certain you’re benefiting from these resources to enable you to learn everything you need to know.

Factors Affecting the Price of Acid-Resistant Bricks

Acid-resistant bricks are made of quartz, feldspar, and clay as the main raw materials. They are fired in a kiln at high temperatures and are not easily oxidized at room temperature and are not easily contaminated by media. Widely used in petroleum, chemical industry, food, dairy industry, juice, paper making, fertilizer, pesticide, chemical fiber, textile, smelting, power plant, electroplating room, and other industries. As well as the anti-corrosion lining of towers, pools, tanks, and troughs, it also plays its anti-corrosion role in sewage treatment projects and open-air work sites.

Rongsheng Acid-Resistant Bricks for Sale

Dimensions of Acid-Resistant Bricks

In terms of product size, in addition to standard sizes, we also provide customized processing parts. Common sizes of acid-resistant bricks are:

• 150x75x15/20/30mm
• 150x150x15/20/30mm
• 200x200x15/20/25/30mm
• 300x300x15/20/30mm
• 230x113x15/20/30/40/50/60mm
• 600x600x15/20mm

(Note: Available in plain, glazed, and matte glazed surfaces)

Price of Acid-Resistant Bricks

Industrial anti-corrosion floor tiles – acid-resistant tiles, with high density, low water absorption, and high acid resistance, are often used in the chemical industry, workshop floors, laboratories, and other places. The purpose of choosing acid-resistant bricks is to prevent some acid-base liquids from corroding the ground or some storage equipment. Acid-resistant bricks also have their “partners”, such as acid-resistant clay, epoxy resin clay, furan resin clay, etc. These bonding materials have different properties and prices.

Acid-resistant cement has good acid and alkali resistance, but the disadvantage is that it is not waterproof. If used in an environment with water, its lifespan will be shortened and tiles may fall off. On the contrary, if it is used on the ground, acid-resistant clay is completely fine, and the color will be earthy yellow. Epoxy resin clay and furan resin clay are both waterproof clays and can be described as “dual-energy” products. It can enter the water and go ashore. If one is sandy red (light red) and the other is black, the corresponding price will be higher. During construction, the bonding material is colored. If it gets on the brick surface during construction, it is recommended to wipe it off in time, otherwise it will not be easy to clean after it dries. If it is really due to omission, it is dried on it, and it feels unsightly. Although acid-resistant bricks do not pay attention to aesthetics, you can use oxalic acid to clean the stained areas.

Dimensions of Acid-Resistant Bricks

Why are Acid-Resistant Bricks Resistant to Acid, Alkali, and Corrosion?

Different industries are like mountains apart, and different industries involve different levels of knowledge. If you are not engaged in the anti-corrosion industry, then you must know very little about acid-resistant bricks, and you may not even know what acid-resistant bricks are. Where is it used and what are its performance characteristics? Anyone engaged in the chemical industry knows that acid-resistant bricks can withstand acid and alkali and prevent corrosion. So what is the difference between acid-resistant bricks and household tiles? Why can it resist acid and alkali and prevent corrosion?

1. Acid-resistant bricks have low water absorption.

Acid-resistant ceramic tiles are made of quartz, clay, and other materials. Like ordinary ceramic tiles, their ability to absorb water is relatively low. Therefore, it can be used as a waterproof material and has a good protective effect on the ground or wall. When everyone chooses ceramic tiles, in addition to their appearance, their waterproofing effect is also one of the reasons why everyone chooses them. Especially in places where there is often water, everyone basically uses ceramic tiles.

2. High strength and wear resistance.

The strength of acid-resistant ceramic tiles is higher than that of ordinary ceramic tiles, and they can withstand pressures greater than 100MPa. There is no problem for people to stand on them. High strength can ensure that acid-resistant ceramic tiles will not be easily damaged when they are hit hard, thus affecting our use. In addition, the high wear resistance of acid-resistant ceramic tiles can ensure that they remain intact during use. It will not change due to regular friction.

3. Acid resistance.

Why do acid-resistant ceramic tiles have strong acid resistance? That’s because there is silica in acid-resistant tiles. Everyone knows that silica is acid-resistant, and poly aluminum redstone formed after high-temperature firing is even more acid-resistant. Since acid-resistant ceramic tiles have relatively low water absorption, they are not easily penetrated by solutions. Therefore, it also has a certain alkali resistance and can not be corroded by alkaline substances of many concentrations at normal temperatures.

To purchase high-quality acid-resistant bricks, please contact us for a free quote and sample.

High Alumina Bricks for Steel Coking Furnaces

As a large-scale high-temperature industrial equipment, steel coking furnaces have to carry melting furnace temperatures up to a thousand degrees, so it is very necessary to use necessary furnace body refractory and heat-insulating protection materials. For steel coking furnaces, many manufacturers choose high-alumina bricks as raw materials for construction and maintenance.

RS High Alumina Bricks

High Alumina Bricks for Steel Coking Ovens

High alumina bricks include lightweight high alumina bricks and dense high alumina bricks. So which one should be used in a steel coking furnace?

In fact, in steel coke ovens and other industrial kilns, light and dense high alumina bricks are mostly used in combination. Because they have different characteristics and functions, using only one of them cannot fully meet the refractory insulation effect required by the kiln. Therefore, large manufacturers purchase these two materials for construction.

The main feature of lightweight high-alumina bricks is thermal insulation, which can be used as the outer layer close to the furnace wall. This can not only ensure the effective utilization of the heat energy of the equipment but also prevent deflagration caused by high heat conduction. Dense high-alumina bricks are used in the furnace in contact with the flame. This refractory material is pressed and calcined at a high temperature of 1775°C. It has strong heat resistance, high-temperature resistance, and corrosion resistance. It will not deform or fall off under high heat conditions for a long time.

Lightweight high-alumina bricks and dense-weight high-alumina bricks each have their own strengths and weaknesses. The two are laid according to the different positions and required functions of the kiln so that the service life of the equipment can be extended and the safety production level can be improved.

Lightweight High-Alumina Insulation Bricks

What is the Difference between Refractory Bricks and Insulating Bricks?

Refractory bricks and insulation bricks are both building materials products. However, there are some differences in the main application fields and uses. Many users often compare the two when choosing products. Below we will learn about their differences through different aspects.

1. Insulation performance.

The thermal conductivity of insulation bricks is generally 0.2-0.4w/m·k (average temperature 350±25℃). The thermal conductivity of refractory bricks is above 1.0w/m·k (average temperature 350±25℃). It can be concluded that the thermal insulation performance of lightweight insulation bricks is better.

2. Refractory resistance.

The fire resistance of insulation bricks is generally below 1400 degrees. The refractory degree of dense refractory bricks is above 1400 degrees.

3. Density.

Insulation bricks are generally lightweight insulation materials with a density between 0.8-1.0g/cm3. The density of dense refractory bricks is basically above 2.0g/cm3.

To purchase high-quality high alumina brick products, please contact us. Our products are of reliable quality and our customer service is guaranteed. Get free samples and solutions.

Two Reasons for the Damage of Magnesia Carbon Bricks

RS Cheap refractory brick manufacturer, based on years of experience in the production and sales of refractory bricks, as well as the damage characteristics of our refractory brick linings during actual use, has summarized the two main reasons for the damage of magnesia carbon bricks.

Magnesia Carbon Bricks Resistant to Slag Erosion

The damage process of magnesia carbon bricks. The damage of magnesia carbon bricks is first caused by the oxidation of carbon in the bricks, forming a decarburized layer. In addition, the thermal expansion rates of magnesium oxide and graphite are very different at high temperatures. At 1000°C, they are 1.4% and 0.2% respectively, resulting in loose tissue structure and reduced strength. After being eroded by slag, mechanical erosion, etc., the magnesium oxide particles in the bricks are gradually eroded and fall off layer by layer, causing damage to the magnesia carbon bricks. The damage process of https://cheapfirebricks.com/magnesia-carbon-brick is: oxidation → decarburization → loosening → erosion → erosion → falling off → damage. A large amount of research work has proven that above 1600°C, the following reactions are the main reasons for the damage of magnesia carbon bricks.

MgO(s)+C(s)→Mg(g)+CO(g)   (1)

The damage to magnesia carbon bricks is first caused by the oxidation of carbon in the hot surface of the working lining, forming a thin decarburization layer. The oxidation of carbon is the result of continuous oxidation by iron oxides in the slag and O2 in the air as well as CO2, SiO2 and other oxides. And the vaporization effect of MgO dissolved in molten steel or bricks on carbon. Secondly, high-temperature liquid slag penetrates into the pores of the decarburized layer or cracks caused by heat, and reacts with the magnesium oxide in the brick to form a low melting point compound. Causes the surface layer of bricks to undergo qualitative changes and weaken. Under the action of strong steel slag agitation, mechanical erosion and other stresses, the layers of magnesia carbon bricks fall off layer by layer, causing damage to the magnesia carbon bricks. Repeating this cycle, the furnace lining becomes thinner layer by layer, and eventually the furnace is repaired, repaired, and stopped.

(1) Oxidation of Carbon

The damage of magnesia carbon bricks is first caused by the oxidation of the carbon in the bricks. The oxidation of carbon proceeds through the following reaction:

Fe0+C→Fe+CO    (2)

O2+2C→2CO    (3)

CO2+C→2CO    (4)

SiO2(s)+C(s)→SiO(g)+CO(g)    (5)

MgO(s)+C(s)→Mg(g)+CO(g)    (6)

Due to the oxidation of carbon, the carbon network structure in the brick is destroyed, resulting in loose tissue structure, reduced product strength, increased pores, and intensified erosion of the brick by slag.

(2) Influence of Pores

The pores in magnesia carbon bricks, especially open pores, have an important impact on the damage of magnesia carbon bricks. During the use of magnesia carbon bricks, the oxidation damage of carbon is mainly caused by the pores, which in turn intensifies the erosion of the brick lining by the slag, thereby causing damage to the magnesia carbon bricks. Open pores present in the brick that draw air in from the outside as it cools. During reheating, the oxygen in the air reacts with the surrounding carbon to generate CO and is discharged. This process repeats itself, causing the porosity to increase. In addition, the binder present in magnesia carbon bricks is an important factor in the generation of pores.

As the binder of magnesia carbon bricks, phenolic resin is generally used. By adding 3% to 4% phenolic resin, the porosity after molding is low, about 3%. However, during use, the phenolic resin is heated and decomposed, producing H2O, H2, CH4, CO, CO2 and other gases that evaporate and are emitted. The gas evaporation path forms pores, which also increases the porosity. In this way, the oxygen present in the air and the oxides in the slag will corrode the bricks through the pores. On the one hand, it promotes the oxidation damage of carbon, on the other hand, it intensifies the reaction between slag and MgO in the bricks, causing damage to magnesia carbon bricks. This process starts over and over again, through the oxidation of carbon and the erosion of slag. On the one hand, it destroys the carbon network structure in the brick, making the organizational structure loose and the high-temperature strength reduced. On the other hand, low melting point compounds are formed on the surface of the bricks, which weaken and deteriorate. As a result, the magnesia carbon bricks fall off layer by layer under the action of strong steel slag agitation, mechanical erosion, thermal shock and other stresses, causing damage to the magnesia carbon bricks.

How Much Does a Ton of High-Alumina Refractory Bricks for Hot Blast Furnaces Cost?

Commonly used refractory bricks in hot blast stoves mainly include silica bricks, high alumina bricks, clay bricks, mullite bricks, etc. Each type of hot air stove may be different depending on the use. Refractory fire bricks for hot blast stoves. The selection of refractory materials for hot blast stoves is mainly determined by the hot air temperature of the hot blast stove.

Low Creep High-Alumina Bricks for Hot Blast Stoves

High Alumina Bricks for Hot Blast Furnaces

Generally, when the wind temperature is less than 900°C, clay bricks are often used. When the air temperature is between 900 and 1100°C, high-alumina bricks, mullite bricks, or sillimanite bricks are used for the furnace lining, and checker bricks in the high-temperature part. When the air temperature is higher than 1100°C, high alumina bricks, mullite bricks, and silica bricks are generally used as furnace lining or checker bricks. But the overall difference is not bad. Today we focus on high alumina bricks for hot blast stoves.

High alumina bricks in hot blast stoves are often used in checkered bricks on the upper part of hot blast stoves, rotating bricks on vaults, and large walls, that is, they are used in high-temperature parts of hot blast stoves. The high alumina bricks produced by RS Cheap Fire Bricks generally include first-level high alumina bricks, second-level high alumina bricks, third-level high alumina bricks, mullite bricks, etc. The alumina content of each type of high alumina brick is different. Therefore, the parts where the temperature of the hot air stove is distributed are used in different parts of the hot air stove. Due to its high aluminum content, the material has good fire resistance, high-temperature resistance, and corrosion resistance. These characteristics make high alumina bricks one of the ideal choices for hot blast stoves.

When selecting high-alumina bricks for hot blast stoves, the high-temperature creep properties of refractory bricks should be taken into consideration to ensure production safety in long-term work. Therefore, we need to select each part in the early stage and choose different varieties and brands of refractory bricks. The selection of refractory materials used in various parts of the hot blast stove is based on the temperature of the heating surface where it is located, and it can work stably for a long time under load-bearing conditions.

Blast furnace hot blast stoves in my country are generally internal combustion type, and their linings and checker bricks are generally constructed of high alumina bricks and clay bricks. The high-temperature parts of external-fired hot blast stoves are generally built with silica bricks. For medium and low-temperature parts, high alumina bricks and clay bricks are used in turn.

75 High-Alumina Bricks for Blast Furnaces

How much does a ton of ordinary high-alumina refractory bricks cost for hot blast stoves?

There are many types of refractory bricks used in hot blast stoves, and high alumina refractory bricks are one of them. However, high alumina refractory bricks for hot blast furnaces are divided into ordinary high alumina bricks and low creep high alumina bricks. How much does a ton of ordinary high-alumina refractory bricks for hot blast stoves cost? The price of high alumina bricks is generally a concern of users. RS Cheap Fire Bricks Factory will analyze it based on the actual working conditions.

Before understanding the price of ordinary high alumina refractory bricks, let us briefly understand the basic information of high alumina refractory bricks. Ordinary high-alumina refractory bricks for hot blast stoves use high-alumina bauxite as the main refractory raw material. Powder, additives, and binders are added, and the formula is prepared in proportion, mixed, and high-pressure molded before being fired in the kiln. The fired-high alumina bricks can be used in industrial kiln environments around 1500°C. It has the advantages of stable thermal shock resistance, high compressive strength, and strong corrosion resistance. Ordinary high alumina refractory bricks for hot blast stoves are divided into three grades according to different aluminum contents: 65 high alumina bricks, 55 high alumina bricks, and 48 high alumina bricks.

Kinds of Low creep High-Alumina Bricks in Hot Blast Furnace

Which parts of the hot blast furnace are generally used for ordinary high alumina refractory bricks?

Ordinary high-alumina refractory bricks are used as linings on the top and walls of hot blast furnaces. Special attention should be paid to the thermal shock stability of high-alumina bricks used in furnace tops to prevent the bricks from peeling off or breaking due to sudden temperature changes. The furnace lining is affected by the rapid temperature changes during the heat exchange process, the chemical erosion of dust brought in by the blast furnace gas, the mechanical load, the scouring effect of the combustion gas, etc., which all impact the furnace lining refractory materials. Therefore, refractory bricks with good stability and corrosion resistance are needed.

I learned about the production of ordinary high alumina bricks and their use parts and physical and chemical indicators in hot blast stoves. I also have a certain understanding of the configuration of high alumina bricks for hot blast stoves. Through this information, we also have a certain understanding of the price of high alumina bricks. So, how much does a ton of ordinary high-alumina refractory bricks for hot blast stoves cost? Comparing the actual situation with the market price of high alumina bricks, the price is about 2,800 yuan to 3,500 yuan. Why is there a price range? This is what confuses many people. From the above information, we can understand that there are three brands of high-alumina refractory bricks for hot blast furnaces. Different brands of high-alumina bricks have different aluminum contents, and their properties are different, which is also a factor leading to different prices.

What are the Refractory Materials for High-Temperature Industrial Kiln Linings?

There are many types of high-temperature industrial kilns, and kilns with different functions use different types and materials of refractory materials. High-temperature industrial kilns are lined with refractory materials to protect the normal operation of high-temperature kilns. RS Cheap Fire Bricks manufacturer can provide comprehensive refractory services for high-temperature industrial furnaces. First, what are the common Refractory Materials for High-Temperature Industrial Kiln Linings?

Rongsheng High-Performance Refractory Bricks Lining Materials

Refractory Bricks are Refractory Materials for Industrial Kiln Linings

A reasonable refractory lining structure is the basis for the stable production of high-temperature industrial kilns. Commonly used refractory materials for lining high-temperature industrial kilns are Refractory brick masonry, unshaped refractory materials, insulating ceramic fiber refractory materials, and other refractory materials.

Industrial kilns use refractory brick masonry, which is a lining made of refractory bricks and refractory mud. It is the most widely used lining structure form for kilns. When choosing refractory bricks to construct the lining of a kiln, it is necessary to select refractory bricks of appropriate materials and sizes according to the structure of the kiln body to build the lining.

Unshaped refractory materials are currently the more popular refractory materials used for lining industrial kilns. Mainly include refractory castables, refractory spray coatings, refractory ramming materials, etc.

• During the construction of refractory castables, after the refractory materials are mixed according to requirements, they can be poured into the parts that need to be constructed. Good fluidity, convenient construction, and shortened construction time. It has good effect and a wide range of uses, and can also be used in areas where refractory bricks are difficult to lay.
• When constructing refractory spray paint, the spraying tools selected can spray from multiple angles and in any position. Use high-quality refractory materials to spray-coat the kiln lining as the kiln lining.
• Refractory castables and refractory spray coatings are different in construction methods and have slightly different essential requirements for refractory materials. For example, refractory castables require good fluidity, and refractory spray coatings require low rebound rates. However, in order to better combine the spray paint with the kiln lining, it is generally necessary to install anchors on the kiln lining during construction, so that the construction effect after spraying is good.
• Refractory ramming materials are generally used in tiled or relatively flat high-temperature kiln parts. The lining after being pounded by the pounding tool has good density, high strength, and good use effect.
• Refractory castables, refractory spray coatings, and refractory ramming materials are different forms of unshaped refractory materials, and they are also the refractory materials selected for lining various industrial kilns. Because of its convenient construction, it is used in a variety of industrial kilns.

Ceramic fiber insulation material is a kind of heat insulation material, which is mostly used in industrial kilns that need heat insulation to avoid heat loss. Ceramic fiber insulation materials include fiber blankets, fiber cotton, fiber felt, fiber boards, and other fiber materials.

RS Cheap Fire Bricks manufacturers can customize refractory lining material products for customers based on the working conditions of high-temperature industrial kiln linings. According to the different uses of the refractory brick lining, the high-temperature refractory lining body is adapted to different working conditions to protect the kiln shell from erosion. Ensure the normal operation of high-temperature kilns, save production costs, and create economic benefits.

Why are Phosphate Refractory Bricks Resistant to Wear and Tear?

The particle gradation of phosphate bricks is a process ratio of large at both ends and small in the middle. Coarse particles act as skeleton supports. The fine powder plays a role in filling the gaps, and the matrix part of the fine powder wraps and adheres to the coarse particles. The bonding agent uses phosphoric acid, so the product has high strength and good wear resistance. As a refractory brick manufacturer, “Why are phosphate refractory bricks wear-resistant?” I also accept this explanation.

Phosphate Wear Resistant Bricks

Production Process of Phosphate Refractory Bricks

During the production process, the ratio of coarse particles to fine powder of phosphate bricks directly affects the strength and wear resistance of the bricks. Therefore, the process ratio requires the principle of close packing.

Phosphoric acid itself has no binding properties and will form aluminum phosphate when in contact with refractory materials. As the temperature increases, the ions in the phosphate group will form molecules with chain, network, and space skeleton structures, and polymerization and adhesion will occur, giving the product strength.

However, when phosphoric acid is added to refractory bricks, there are certain concentration requirements. When used, phosphoric acid should be dissolved and boiled in proportion to aluminum hydroxide. Nowadays, there are also boiled finished products on the market, which are packed in barrels for use. The specific gravity is 1.6~1.65, and the proportion of refractory bricks added is 6~8%.

When producing phosphate bricks, the materials must be trapped for 24 hours before pressure forming. The purpose of trapped material is to react the phosphoric acid with the iron in the aggregate and fine powder and then release the gas. If the material is trapped for too short a time, the phosphoric acid will react with the iron in the material to generate gas, which will easily cause spalling during the brick pressing process.

High-Quality Phosphate Brick For Sale In RS

In addition, the tonnage of the press is also an important link in the wear resistance of phosphate bricks. Because if the tonnage of the press is too small, the volume density will be low and it will not be able to achieve a certain degree of wear resistance. Currently, manufacturers use 630-1,000-ton presses to produce phosphate bricks, so that the phosphate bricks have a high density and stronger wear resistance.

It should be noted that if phosphate bricks are produced in winter while implementing the trapping system, the temperature of the trapping material must be above 25°C for trapping. It must be covered with a plastic sheet for 24 hours before use. If the temperature is low, the materials in the raw materials will freeze. In this way, it is easy to stick to the mold when the bricks are pressed and formed, causing pitted surfaces and affecting the quality of the phosphate bricks.

Phosphate bricks have gelling properties at room temperature. When heated to a certain temperature, acid aluminum phosphate can turn into aluminum pyrophosphate and aluminum metaphosphate, causing dehydration polymerization. As the temperature increases, in addition to polymerization, aluminum metaphosphate can also decompose, further increasing the density of the combination. Its performance characteristics are mainly high strength, strong corrosion resistance, low porosity, and good thermal stability. Especially when used below 1200~1300℃, it has good wear resistance and strong alkali corrosion resistance.

To solve the problem of using refractory lining materials in easy-to-wear parts, Rongsheng refractory brick manufacturers can provide high-quality phosphate bricks and phosphate combined high alumina bricks. Shipping is fast, product quality is reliable, and customer service is guaranteed.

Corundum Mullite Bricks with Many Advantages

Corundum mullite brick is a high-grade refractory material, mainly used in high-temperature areas of ultra-high-temperature tunnel kilns, such as furnace walls, furnace roofs, kiln cars, and other parts. Based on the physical properties and physical and chemical indicators of corundum mullite bricks, refractory material manufacturers can point out the many advantages of corundum mullite bricks.

RS Corundum Mullite Bricks Supplier

Advantages of corundum mullite bricks in terms of physical properties and physical and chemical indicators

1. Thermal expansion coefficient. Corundum-mullite bricks have a low thermal expansion coefficient and can maintain good stability even at high temperatures. It can also be used stably in environments with large temperature changes.
2. Compressive strength. The compressive strength of corundum mullite bricks is relatively high, usually around 100MPa. It can withstand greater pressure at high temperatures and has good pressure resistance.
3. Refractory resistance. Corundum mullite bricks have high refractoriness, usually between 1750-1800°C, and can withstand changes such as oxidation, reduction, and thermal shock at high temperatures. Can be used stably for a long time at high temperatures.

Corundum mullite bricks also have some other properties, such as high wear resistance, high corrosion resistance, good insulation properties, etc. In short, corundum mullite brick is a high-performance refractory material. Its specific composition and physical and chemical indicators determine its excellent fire resistance and stability in severe working environments such as high temperatures, strong acids, and alkalis.

These advantages in physical and chemical indicators are of course inseparable from the high-performance indicators of high-quality refractory raw materials.

Corundum Mullite Bricks for Sale

High-Quality Refractory Raw Materials Used in Corundum Mullite Bricks

Corundum-mullite brick is a high-performance refractory material made of corundum, mullite, and other minerals.

(1) Corundum. Corundum is one of the main components of corundum mullite bricks, and its main component is alumina (Al2O3). Corundum has high hardness, high compressive strength, high wear resistance, high fire resistance, excellent corrosion resistance, and thermal stability, and is an important high-performance material.

(2) Mullite. Mullite is a high silicate mineral with excellent corrosion resistance, fire resistance, insulation properties, and physical and mechanical properties. In corundum mullite bricks, the mullite content is usually 20-30%.

(3) Other materials. Some other minerals and additives may also be added to corundum mullite bricks to enhance the properties of the material.

Advantages of Corundum Mullite Bricks

1. High wear resistance. Corundum-mullite bricks have very high hardness and wear resistance due to their high proportion of corundum and mullite.
2. Good corrosion resistance. Corundum-mullite bricks have excellent corrosion resistance and can withstand harsh environments such as strong acid, strong alkali, and high temperatures, extending their service life.
3. High-temperature stability. Corundum-mullite bricks can withstand very high temperatures and maintain stable performance under high temperatures.
4. Common design drawings of tunnel kilns generally include the following parts: furnace door, furnace wall, furnace bottom, furnace top, kiln car, etc.

To purchase high-quality corundum mullite bricks, contact RS Cheap Refractory Bricks Factory. We can provide high-quality refractory brick products and comprehensive customer service. Moreover, we can provide you with customized refractory lining material solutions based on your industrial furnace usage needs. Welcome your free consultation.

High Quality Magnesia Carbon Brick Manufacturer

Magnesia-carbon bricks are made of magnesia, dead-burned magnesia, fused magnesia, high-purity magnesia, high-quality graphite, and bauxite additives. The price and performance of magnesia carbon bricks have a lot to do with the graphite content in the bricks. As the graphite content increases, the strength of the brick decreases, the thermal expansion rate decreases, and the residual expansion rate increases. Therefore, the graphite content in the brick should be controlled at about 20%. RS Cheap Fire Bricks Factory can supply high-quality premium Magnesia Carbon Bricks for Ladles. To buy magnesia carbon bricks, please choose a high-quality magnesia carbon brick manufacturer.

Alumina Magnesia Carbon Bricks in Rongsheng

Magnesia Carbon Brick for Ladle Slag Line

Magnesia-carbon bricks have low wettability to slag, excellent spalling resistance, and corrosion resistance, and are suitable for the slag line of the ladle, especially for the occasion of continuous pouring of multiple furnaces. In order to meet the needs of producing clean steel, the application site of magnesia carbon bricks has expanded from the slag line to the side wall during refining in the ladle.

When building magnesia-carbon bricks on ladles, care should be taken not to mix them with bricks with high SiO2 content. Otherwise, the local melting loss of magnesia carbon bricks will be increased. Magnesia-carbon bricks are mainly used in the furnace lining and taphole of steelmaking oxidation conversion furnaces, and the hot spots of high-power electric furnace walls. As well as the lining of the refining furnace outside the furnace, the slag line of the steel ladle, etc.

During the smelting process, the conditions of use and damage of each part of the converter are different. In order to achieve balanced corrosion, the grade and quality of the selected magnesia carbon bricks are also different for each part of the converter under different operating conditions.

Magnesia Carbon Bricks Used in the Steel Ladle

The temperature of the furnace mouth and the furnace cap changes drastically, and the slag corrosion is more serious. Magnesia carbon bricks with good thermal shock resistance and strong slag resistance should be selected. In addition to being damaged by blowing on both sides of the trunnion, there is no protective slag layer cover on the surface, which is not easy to repair, and the carbon in the brick is easy to oxidize. High-quality magnesia-carbon bricks with excellent slag resistance and good oxidation resistance should be built. The slag line part is in long-term contact with molten slag and is seriously corroded by slag. It is necessary to build magnesia carbon bricks with excellent slag resistance. The splashing action of slag and molten steel during oxygen blowing on the charging side is likely to cause chemical erosion, abrasion, erosion, and direct impact and erosion of scrap steel and molten iron on the charging side. Magnesia carbon bricks with strong slag resistance, high-temperature strength, and good thermal shock resistance should be selected. The hearth and furnace bottom are less eroded than other parts, and ordinary magnesia-carbon bricks can be used. When the top-bottom composite blowing technology is used, especially when CO2, O2, and other gases are blown at the bottom, the damage is more serious. High-grade magnesia-carbon bricks with good oxidation resistance, good thermal shock resistance, high-temperature strength, and strong slag resistance should be selected. According to the use of different parts of the converter, the selection of converter magnesia carbon bricks with corresponding performance is an effective way to improve the technical and economic indicators of the converter.

Magnesia Carbon Bricks Resistant to Slag Erosion

The raw material for preparing magnesia-carbon bricks is fused magnesia with a MgO content of 98%. Magnesia carbon bricks are characterized by their low porosity, resistance to slag erosion, thermal shock resistance, and high-temperature strength. They are mainly used in basic oxygen furnaces, mid-grade magnesia, ladle slag lines, and electric arc furnace hot spots. Magnesia carbon brick is a high-quality refractory material. Their main components are magnesia and carbon, wherein the magnesia content is 60-90%, and the carbon content is 10-40%. This material is made of high-purity magnesium oxide particles, carbon materials, tar, pitch, or resin and baked at high temperatures. These magnesia refractory bricks have the characteristics of slag corrosion resistance, thermal shock resistance, thermal conductivity, and so on.

Magnesia Carbon Bricks Resistant to Slag Erosion

Magnesia carbon brick is an unburned carbonaceous composite refractory material, which is made of magnesia with a high melting point (2800°C) basic oxide and a high melting point carbon material. The material is resistant to attack by slag, and various non-oxide additives and carbon binders are added.

The magnesia contained in magnesia carbon bricks depends on the material used. Common magnesia carbon bricks mainly include 72% magnesia, 74% magnesia, 76% magnesia, 80% magnesia, 82% magnesia, and 85% magnesia. Ladle magnesia-carbon bricks, The main raw materials used in the production of magnesia-carbon bricks are fused magnesia, graphite, metal aluminum powder, metal silicon powder, and liquid phenolic resin, which are stirred by a sand mixer and pressed by a press. Magnesia-carbon bricks are used in refining ladle slag lines, and magnesia-carbon bricks are also used in AC electric arc furnaces, DC electric arc furnaces, converters, and other furnace linings.

Electric furnace magnesia carbon brick steelmaking is equipment that uses the arc generated between graphite electrodes as the heat source for steelmaking. It is divided into DC electric furnace and AC electric furnace, among which AC electric furnace accounts for the majority. In this work, according to the damage mechanism of the electric furnace, the magnesia-carbon bricks suitable for the electric furnace were developed and produced.

To learn more about the price information of magnesia carbon bricks, please contact us. We can customize magnesia carbon bricks, ladle refractory lining materials, etc. according to your working conditions.

Silicon Carbide Bricks from Rongsheng Refractory

Silicon carbide bricks use silicon carbide (sic) as the main raw material, and are equipped with various binders according to requirements. After high-pressure molding, silicon carbide brick products have good thermal stability, high thermal conductivity, and good corrosion resistance. They are commonly used energy-saving materials for industrial kilns. Silicon carbide bricks are mainly used for thermal treatment furnaces, laboratory muffle furnaces, glass annealing furnaces, enamel sintering furnaces, diffusion furnaces, and shed panels and flame insulation materials for various kilns.

ZhengZhou Rongsheng Refractories Co., Ltd. supplies silicon carbide bricks of standard and commonly used specifications all the year round. Our company can customize and produce various special-shaped silicon carbide materials according to the drawings of customers’ needs. Next, Rongsheng refractory manufacturers will show you about silicon carbide bricks. Welcome to consult and cooperate!

Rongsheng Silicon Carbide Bricks

Rongsheng Silicon Carbide Brick

Refractory products made of silicon carbide as the main raw material. The silicon carbide content is 72%~99%. Generally, black silicon carbide (SiC content of more than 96%) is used as raw material, and a binder (or no binder) is added, and it is prepared through the processes of batching, mixing, molding and firing.

The main crystal phase is silicon carbide. The main varieties are oxide-bonded silicon carbide bricks, carbon-bonded silicon carbide bricks, nitride-bonded silicon carbide bricks, self-bonded silicon carbide bricks, recrystallized silicon carbide bricks and semi-silicon carbide bricks.

Rongsheng silicon carbide brick has the characteristics of good wear resistance, corrosion resistance, high temperature strength, good thermal shock stability, high thermal conductivity, and small thermal expansion coefficient. It is a high-performance refractory material.

Silicon carbide bricks have high thermal conductivity, good wear resistance, thermal shock resistance and corrosion resistance. It can be used for lining of aluminum electrolytic cell, molten aluminum conduit and kiln furniture for ceramic kiln, lower part of furnace body, waist and belly of large and medium-sized blast furnace, lining of aluminum refining furnace, lining of zinc distillation tank, etc.

How to Judge the Quality of Silicon Carbide Bricks

Silicon carbide brick is a refractory material made of SiC as the main raw material. Contains SiC 72%~99%. Divided into clay bonded, Si3N4 bonded, Sialon bonded, β-SiC bonded, Si2ON2 bonded and recrystallized silicon carbide bricks. Silicon carbide bricks have high thermal conductivity, good wear resistance, thermal shock resistance and corrosion resistance. It can be used for lining of aluminum electrolytic cell, molten aluminum conduit and kiln furniture for ceramic kiln, lower part of furnace body, waist and belly of large and medium-sized blast furnace, lining of aluminum refining furnace, lining of zinc distillation tank, etc.

When purchasing silicon carbide bricks, many users cannot distinguish the quality of silicon carbide products due to lack of experience when purchasing silicon carbide bricks and silicon carbide products. As a result, unqualified silicon carbide products are often bought, which greatly affects the service life of the kiln, increases the investment in refractory materials, and brings unnecessary losses to the enterprise. So how to distinguish the advantages and disadvantages of silicon carbide bricks?

First of all, the size specification of silicon carbide bricks should be accurate, and the specific gravity of silicon carbide bricks is generally between 2.45–2.6. If the specific gravity is too small or too large, it means that the material itself is impure, and other refractory materials must be added. Thereby greatly affecting the silicon carbide content and affecting the heat transfer performance of silicon carbide. When purchasing silicon carbide bricks, it is necessary to see whether there are missing corners and cracks on the surface of the bricks. Chipped corners and cracks should be acceptable within the range of the national standard, and if they seriously exceed the national standard, the quality of this batch of products is unqualified.

What are High Performance Refractory Lining Materials?

There are too many types and models of industrial furnaces, and different industries have different requirements for refractory materials used in furnace construction. What kind of refractory material is good for industrial kiln construction? What is a high-performance lining refractory material? Rongsheng refractory brick manufacturers have summarized the following points based on years of experience in the production, sales, and construction of refractory materials. First of all, it is necessary to clarify the types and uses of industrial kilns. According to the actual working conditions, select the appropriate refractory lining material. Including various refractory bricks, refractory castables, refractory plastics, refractory ramming materials, refractory insulation materials, etc.

Rongsheng High-Performance Refractory Lining Materials

The high-performance refractory lining material

The lining of industrial kilns is made of refractory materials, which provides effective protection to ensure the normal operation of the kiln for a long time. So, what is a high-performance refractory lining material?

The furnace lining is selected according to the operating conditions. The refractory bricks used for lining masonry should be selected according to a number of indicators. What factors can determine the quality refractory bricks? These factors also affect the performance of refractory lining materials.

In order to ensure that the lining refractories can better serve various types of kiln equipment, Rongsheng refractory manufacturers have carried out a series of optimized configurations to extend the service life of the kiln. Refractory materials are an important basis for lining structure design, and the quality of lining refractory materials is directly related to whether the entire project can be put into production smoothly. Therefore, it is particularly important to combine the performance of lining refractory materials and related process design. It requires not only a complete process but also a reasonable configuration of refractory materials. Even high-performance refractory linings will inevitably be affected by changes in ambient temperature during use. Such as oven, temperature rise, temperature change during operation, steam purging, start and stop temperature rise and fall, etc. The operation is stable, avoiding damage to the lining caused by rapid cooling and heat, improving the thermal stability of the material, and prolonging the service life of the lining. The gasket is used in a high-temperature environment, so that it expands under high-temperature conditions, thereby being squeezed to generate thermal stress. If the internal stress of the lining exceeds its own strength, peeling damage will occur.

Due to the special and harsh conditions of use, the performance requirements for lining refractory materials are also getting higher and higher. Construction furnace materials mainly include general building materials such as refractory materials, heat-insulating refractory materials, steel, wood, cement, and other auxiliary materials. Grasp the variety, specification and performance of various furnace materials, reasonably select and correctly use various refractory materials. Strengthening the scientific management of refractory materials and reducing material loss are the main prerequisites for ensuring the quality of industrial furnace masonry projects and improving the service life of furnaces. General principles for selecting refractory materials for furnace construction: (1) Refractory materials must have technical properties that can meet the requirements of industrial furnaces, and their performance indicators should comply with current standards or design requirements. (2) The selected refractory materials must have good construction performance and meet the construction technical requirements and engineering quality requirements. (3) The refractory materials used must comply with laws, regulations, and technical specifications related to labor protection and environmental protection.

RS Refractory Factory

The quality of refractory materials determines the service life of kiln lining and the quality of bricks. How to judge?

Judging the quality of refractory bricks by seeing the color and black spots. From material selection, batching, molding, drying, firing, cooling, and other processes, the personnel involved in the production process are highly mobile. Even with operating specifications in place, the color of refractory bricks can vary during a fully automated production process. The firing temperatures of various refractory bricks are different, and it is impossible for the entire kiln to fire the same product. The requirements of production equipment are often mixed with other indicators of refractory bricks, which leads to some refractory bricks being under-fired or the firing temperature being too high. When reaching a certain temperature during high-temperature use, the color will return to normal. All refractory bricks have a certain degree of high-temperature expansion or contraction, and products fired at too high a temperature eliminate this problem and ensure the airtightness of the block during use. In this way, it can be seen that the difference in the color of different refractory bricks negates the quality of the refractory bricks.

A single indicator judges the quality of refractory bricks. Refractory bricks are a kind of inorganic non-metallic materials with a refractory temperature not lower than 1580°C, which are mixed according to a certain scientific ratio. Its comprehensive index factors have been strictly screened in many aspects, the process is complex, high-temperature firing or mixed, and the factors that determine the index change are stable physical and chemical changes. Different types of refractory bricks, such as clay bricks, high alumina bricks, mullite bricks, lightweight insulation bricks, etc., each manufacturer has its own physical and chemical index specifications. This single indicator should be the main material content, refractory temperature, etc., and the quality of refractory bricks cannot be denied because a certain indicator does not meet the requirements of the indicator. The comprehensive performance of the product should be considered under the condition of meeting the production environment. The weight of refractory bricks judges the quality of refractory bricks. All refractory bricks have standard sizes, have a bulk density, and can calculate their unit weight.

In the fierce competition in the market, the buyer of refractory bricks directly purchases refractory brick products from the manufacturer, which is guaranteed in terms of product quality, corporate reputation, and after-sales service. Rongsheng refractory brick manufacturer is a powerful refractory brick production and sales enterprise. If you need to purchase high-quality and high-performance refractory lining materials, please contact us. You will not be disappointed.