Mullite Insulation Bricks For Sale

Mullite insulation bricks is a new type of refractory material in China, which can directly contact flame and has the characteristics of high temperature resistance, slightly high thermal conductivity, small energy saving effect and so on. Mullite insulation brick is a high alumina refractory with mullite as the main crystal phase.

Introduction To Mullite Insulation Brick

1. High refractoriness, up to more than 1790℃. The starting temperature of load softening is 1600 ~ 1700℃. The compressive strength is 70 ~ 260MPa at normal temperature.

2. Good thermal shock resistance. There are two kinds of sintered mullite brick and electrofused mullite brick. Sintered mullite brick with high bauxite clinker as the main raw material, adding a small amount of clay or raw bauxite as a binder, through molding, fired and made.

Mullite Insulation Bricks Application

Used for lining of cracking furnace, hot air furnace, ceramic roller kiln, electric porcelain drawer kiln, glass crucible and various electric furnaces. Glass melting kiln superstructure brick, material passage brick, cover plate, metallurgy is very other industry medium temperature kiln furnace lining, carbon black reaction furnace quench section, stay section lining. Lining of upper crown, crown brick and other industrial heating equipment of glass melting kiln. Glass furnace superstructure brick, cover plate, molding parts, medium temperature carbon black reactor and other thermal equipment lining. Mullite and corundum saggers for high temperature. Glass furnace superstructure brick, material path brick, cover plate, molding parts, medium temperature carbon black reaction furnace lining and other thermal equipment lining. Corundum and mullite saggers for high temperature.

The lightweight mullite brick is made of imported plate-shaped corundum and high-purity fused corundum with the application of advanced ultrafine powder adding technology. It is mixed, dried and shaped and fired in a shuttle kiln at high temperature. Mullite light brick is widely used in residue gasifier, second stage reformer of synthetic ammonia, carbon black reactor and refractory furnace. The size of the products, physical and chemical indicators, service life are up to customer requirements.

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Lightweight Heat Insulation Castable

Lightweight heat insulation castable is a kind of granular and powdery material made of refractory material with a certain amount of binder. It has high mobility, with high fluidity, it is suitable for unshaped refractory formed by pouring. Lightweight heat insulation castable is easy to construct, strong cohesive force, long initial setting time and construction operation time, fast strength growth, strong impermeability, no need for acidification treatment, easy to ensure the compaction of masonry ash joints, can significantly improve the air tightness of the chimney lining wall, integrity and the acid anti-corrosion ability of the lining.

Lightweight heat insulation castable in use, can be mixed by dry after wet mixing with water can be. The amount of water added to the refractory castable also needs to be strictly controlled. The amount of water added is directly related to the performance and strength of the castable. Therefore, it is necessary to pay attention to adding water to the mixed water according to the construction instructions. This series of refractory castables can be used either as acid-resistant castables or as refractory castables without heat insulation layer. The main component of the binder for lightweight acid-resistant castable is water glass. But some requirements use different parts, also use phosphoric acid combination, with phosphoric acid combination of acid castable calcium content is low.

Due to the large porosity of lightweight aggregate structure, rough surface, particle size of about 5mm, aggregate and powder water absorption rate and hygroscopicity, so according to the mix ratio after mixing poor fluidity, small coefficient of thermal conductivity, small coefficient of linear expansion and other characteristics, can also be used in the lining of the blast furnace filler.

The above is our introduction to lightweight heat insulation castable, our factory specializes in the production of non-stick aluminum castable, low cement castable, high aluminum castable, steel fiber castable, lightweight castable, refractory castable, wear-resistant castable and so on. Rongsheng refractory material has developed aluminum silicate series, siliceous series, basic series, light insulation brick series and other finalizing products and castable materials for coking, building materials, steel, nonferrous metal, electric power industries.

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Lightweight Castable Refractory Manufacturer

With the continuous development of industrial demand and technical research, the variety of lightweight refractory castable has been expanded and its application range has been greatly expanded. In terms of species division; Generally, it is classified according to the variety, production method, binder type and performance grade of the lightweight aggregate. It is commonly used to classify the lightweight castable refractory according to the variety of the lightweight aggregate into lightweight brick sand, porous clinker, hollow ball, ceramsite and expanded perlite.

In terms of the range of use, it has been developed from the original material which can only be used as the masonry material for the thermal insulation layer of high temperature furnaces to the lightweight castable which can be used as the working lining of flame furnaces below 1800 ℃. For example, a volume density of 1.5? 1.6g /cm3 lightweight refractory castable is used for pouring working lining, which has a service life of more than 2 years and has achieved good energy saving effect. However, the quality of common lightweight refractory castables needs to be further improved.

The construction of lightweight refractory castable was carried out on the inner wall of badly damaged flue pipe of gas generator. In the specific construction process, the damaged lining was cleaned up first, and then rivet was arranged on the inner wall of the metal flue according to the original design requirements. The construction process of the flue lining was completed by applying smacking and ramming. It can be seen from the construction process that the lightweight refractory castable developed by us has excellent construction performance. After construction, the lining surface is flat and smooth. During the natural curing process, the lining solidified smoothly and no cracks appeared on the surface. 

After the construction and maintenance, it was put into practical application in production. After on-site observation and testing, the flue ran normally. The surface temperature is uniform, indicating the thickness of the lining is uniform. Under the condition of high temperature flue gas scour, no local structural peeling of the lining occurs. After one year's practical application, the lining of the flue was in good condition. Achieved the expected application effect. At present, the flue has been used for two years, but no obvious lining peeling and erosion phenomenon has been found. The metal structure deformation of the flue was not found and the service life of the flue was greatly extended.

Our factory is committed to producing high quality refractory castable with reliable quality and reasonable price. I plant refractory products sold all over the world countries and regions, customers have been unanimous praise, welcome to contact us.

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Refractory Castable For Sale

Key Points About Construction Of Refractory Castable

1. Construction in winter refers to the construction when the ambient temperature is -5~5℃. Only when the temperature is lower than -5℃ can the construction be carried out after taking reliable cold protection measures.

2. Winter construction technology must be adopted in winter construction. Close, wind, heat and keep warm the working environment, and keep the temperature of the lining above 5℃ after pouring.

3. During the construction of refractory castable in winter, the dry material should be stored in the heating room first and stirred with hot water. The temperature of mixing material should be kept above 10℃. Chemical coagulant or antifreeze should not be added.

4. During the construction in the furnace in winter, the heat insulation layer should be built up first to improve the frost resistance of the refractory layer. After construction, the masonry shall be covered with plastic sheeting and then covered with hay. For a newly built kiln, the insulation time shall not be less than 10 days. Exposure to the cold atmosphere is strictly prohibited.

5. The construction should be carried out indoors in rainy days. All refractory materials, conveyances, work areas and masonry should be rainproof. The unfinished project shall cover the roof, plug holes and plug leaks; the air holes on the upper part of the completed furnace shall be closed; the finished ground prefabricated parts shall be raised and capped; it is strictly prohibited to soak in water.

6. When the ambient temperature is ≥30℃, it can be regarded as construction in hot weather. In summer days, the water temperature and material temperature should be controlled below 30℃. The materials under the hot sun should be cooled before use.

7. The construction of refractory castables in hot weather should be arranged in the morning or evening as far as possible. Cover with curtain in time after pouring, should frequently bask in water to cool down.

Refractory Castable Application Range

1. Front kiln mouth and coal injection pipe;

2. Preheater, cone part of decomposing furnace, feeding tube, rising flue, etc.;

3. The elbow of the third air pipe and the position of the air valve;

4. Refractory castable for the lower part of kiln head cover and the top of the front end of grate cooler;

5. Pure low-temperature waste heat power generation system.

We are a high quality refractory material supplier, committed to the production of high quality refractory materials, products exported to the world, has been recognized by everyone, welcome to come to consult and purchase.

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High Alumina Brick Performance and Types

High alumina brick is a kind of firebrick, high aluminum brick is one of the high level refractory materials, and thermal conductivity, thermal shock resistance and slag resistance are better. The kind of high aluminium brick is very much, commonly used have common high aluminium brick, high load soft high aluminium brick, low creep high aluminium brick, phosphate high aluminium brick and so on, the following details for you to introduce.

The refractory of high alumina brick is higher than that of clay brick and semisilicate brick. The refractory material are mainly influenced by the content of Al2O3 and the type and quantity of Al2O3. The refractories increase with the content of Al2O3. Because Al2O3 in high aluminum products is high, less miscellaneous mass, forming less fusible vitreous body, so the softening temperature under load is higher than that of clay bricks, but because mullite crystals do not form reticular structure, so the softening temperature under load is still not as high as that of silicon bricks. High aluminum brick has better thermal conductivity than clay brick. The reason is that the glass with low thermal conductivity in the high aluminum products is less, while the mullite and jadeite crystals with good thermal conductivity are increased, which improves the thermal conductivity of the products.

Its thermal shock resistance is between that of clay and siliceous products. The water cooling cycle at 850℃ was only 35 times. This is mainly due to the higher thermal expansion of corundum than mullite and the absence of crystal transformation. At present, the thermal shock resistance and stability of the products can be improved by improving the particle structure, reducing the content of fine powder and increasing the critical particle size and particle size distribution of clinker. High aluminum brick Al2O3 more, close to neutral refractory material, can resist acid slag and alkaline slag erosion, because it contains SiO2, so the ability of alkali slag than acid slag capacity is weak. In addition, the slag resistance of high aluminum products is related to the stability of the products in slag. Generally speaking, after high pressure molding and high temperature sintering, products with lower porosity have higher slag resistance.

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Common Refractory Castable Introduction

Refractory castable is one of the most widely used and produced amorphous refractory materials, which are commonly used as high strength and abrasion resistant castable, clay castable, light castable and heavy castable. Refractory castable is the main type of unshaped refractory, in the construction project to check whether the mold is good, pouring the good castable mix into the mold, the specific mold removal time is determined by the site, the following is a detailed introduction of the relevant content.

According to the characteristics of the points: high strength wear resistant castable, high temperature resistant castable, low cement castable, steel fiber castable, acid resistant heat resistant castable and other castable characteristics. According to the refractory raw materials to be divided: clay castable, high aluminum castable, silicon castable, mullite castable, corundum castable, silicon carbide castable, etc. According to the applicable environment of industrial kiln: aluminum silicon carbide castable for ladle casting, aluminum magnesium spinel castable for ladle casting, etc. According to the density: light castable and heavy castable. According to the composition of the binder: organic combined castable and inorganic combined castable, such as resin combined castable, cement combined castable.

Refractory Castable Construction Works

1. Check: check whether the mold is well supported, there are no gaps or deviations, and clean up the debris in the mold, whether the anchorage parts (heat-resistant stainless steel palladium nails) are soldered firmly, and whether the anchorage parts are coated with paint or wrapped in plastic bags to buffer the expansion force after heating.

2. Pouring: pour the mixed castable into the mold, insert the vibrator to vibrate, move the vibrator at a uniform speed, and pull out slowly.

3. If the casting area is too large, it can be layered and divided into different parts for pouring and cross-operation. Wall layer pouring, each pouring 900mm or so, the furnace top split pouring, finally lifting.

4. Maintenance and mold removal: the ambient temperature is >20℃, and the mold can be removed after 4H; <20℃, and the mold can be removed after 6-7h. If the local edges and corners are damaged, the mold can be repaired.

Zhengzhou Rongsheng Kiln Refractory Co.,Ltd. is professional refractory material manufacturer, we are committed to the production of high quality refractory materials, quality is stable and reliable, welcome to come to consult and purchase.

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High Alumina Refractory Castable Manufacturers

High alumina refractory castable is one of the most widely used refractory castable in high temperature furnace lining. Below, we will introduce the characteristics of high aluminum castable for use to facilitate your purchase requirements.

It is mainly high bauxite clinker as aggregate and powder, adding binder, dispersant configuration from the refractory castable. Can directly pour the whole lining material can also be poured into the refractory prefabricated pieces used for splicing. High alumina refractory castables are generally packed in 25kg/ bag or 50kg/ bag woven bag according to customer requirements, then packed in ton bag, and then shipped to the customer's designated location.

High Alumina Refractory Castable Advantage

1. High temperature resistance;

2. Dense volume density, low porosity, strong resistance to slag or solution permeability;

3. Good resistance to rapid cooling and rapid heating, thermal impact resistance or thermal shock resistance;

4. High aluminum castable has high compressive strength and good wear resistance.

High alumina refractory castables is suitable for lining of heating furnace, soaking furnace, heat treatment furnace, rotary kiln and all kinds of high-temperature burner, pipe wrapping lining of heating furnace, refining unit parts outside molten steel furnace and high temperature wear resistant lining of petrochemical catalytic cracking reactor. It can also be used for lining such as iron hook in blast furnace, iron trough in cupola and integral powder gun for molten iron pretreatment. High alumina refractory castable can also be used to make large prefabricated blocks and furnace lining.

Zhengzhou Rongsheng Kiln Refractory Co.,Ltd. is professional refractory manufacturer, welcome to contact us.

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High Quality Refractory Castable For Sale

Refractory castable factory production technology advanced, high degree of automation equipment, in the raw materials, some raw materials do not need to break and crush, can be used directly. For example, alumina hollow ball, ceramsite, expanded perlite and industrial alumina. In addition, the preparation of refractory aggregate, powder, soft clay and other raw materials, and fired into firebrick is basically the same, the difference is refractory aggregate critical particle size, classification, so the need for screening, lifting and other equipment, storage bin is also more.



Refractory castable factory shall conduct chemical analysis and physical property test of refractory raw materials, cement binder and additive materials before the production of ingredients. In addition, the refractory aggregate after breaking and pulverized and the refractory powder after fine grinding, chemical analysis, screening and fineness inspection should be carried out to ensure the quality of finished products.







Refractory clay castable is made of clay clinker and fine powder as raw materials, mixed with micro powder additive, and made of cement as binder. The bulk material is used to fill the gap between steel brick and shell of furnace throat and the secondary casting layer of bottom water cooling tube. Clay refractory castable for sale is used for leveling layer of bottom water cooling pipe or internal clearance of steel brick of furnace throat and clearance of steel brick and furnace shell, and also for hot air furnace system.



We are an excellent refractory products manufacturers, numerous advantages, product variety, clay refractory castable for sale, stable and reliable quality, welcome the majority of users to consult.



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High Quality Refractory Bricks Manufacturer

Refractory brick is mainly used in the smelting furnace, construction furnace and buildings material of the thermal equipment in the high temperature.



Refractory bricks can resist various physical and chemical changes and mechanical interaction in the high thermal equipments. 



Refractory bricks properties are reflected in the thermal performance, physical properties, chemical characteristics, mechanical properties, and high temperature characteristics.







Refractory bricks are commonly used in smelting furnace, resisting the high temperature of 1580-1770℃. Refractory bricks can be used as high temperature building materials and structural materials for building furnaces and various thermal equipment and can withstand physical and chemical changes as well as mechanical actions at high temperatures.



In general industrial furnaces, fire brick masonry, hot blast stove and electric stove are used in brick masonry, often using straight refractory bricks, wedge-shaped refractory bricks, arch foot refractory bricks and ball top refractory bricks. The specifications and sizes of these firebricks should not be selected at will.



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Low Cement High Alumina Castable For Sale

Low cement high alumina castable is a kind of powder powder powder, is based on the traditional ratio, adjusted the particle size, added different additives, reduce the amount of cement, improve the performance, improve the strength of medium temperature and softening temperature under load, reduce the thermal conductivity, good thermal stability.

Low cement high alumina refractory castables have the advantages of high temperature performance and high strength. Its use temperature range is wide, after high temperature does not shrink basically, overcame the former refractory concrete shrinkage characteristics.

This series of refractory products are easy to store, transport and use. It has the advantages of anti-permeability, anti-erosion, anti-impact, anti-wear and good performance, the furnace structure integrity is strong, the air tightness is better than the brick furnace, which is helpful to extend the furnace life, save the furnace repair cost, significant economic benefits and so on.

Low Cement High Alumina Castable Main Point

1. Performance features: heat resistant steel fiber is added according to user's requirements for better integrity;

2. Construction method: add water in proportion and stir into slurry, then vibrate and pour into shape;

3. Storage requirements: sealed and packed in a dry environment;

4. Application: suitable for lining of various high-temperature kilns.

We are a professional refractory materials manufacturer, committed to the production and development of a variety of high-quality refractory products over the years. Our production automation degree is high, the refractory product quality is stable and reliable, exports to many countries and regions in the world, welcome you to come to consult and purchase, we will serve you wholeheartedly.

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Refractory Castable In Construction Industry

In recent years, the development of the construction industry is getting better and better. Refractory castable is an essential refractory for the construction industry. There's a huge demand for it. Recently, due to the continuous development of the construction industry, promoting the development of refractory castable has a better prospect.

With the development of economy and society, the refractory castables with environmental protection performance has become the focus. In many of the top construction production lines, have been added to the environmental protection of the green production line. And, at present a lot of construction production enterprises, have begun to update.

Refractory castable has the characteristic that other building material cannot replace, non-toxic, tasteless, beautiful, low price, green, environmental protection. Many buildings and other high requirements for refractory materials, refractory castable is the only choice.

In the current great development situation, a lot of industries are also exhausted. There are a lot of enterprises in the refractory castable to make up research and development work, through the introduction of advanced equipment to improve the product grade, expand market share. Not only the production speed is faster, but also the grade of refractory castable is improved obviously.

In the construction industry, castable is an essential refractory from the initial common building to the present diversified, green and environmentally-friendly construction. The market production of castable refractory manufacturers have a lot of, the competitiveness is very big, but we all in the selection of products, but also to pay attention to the quality of the product, not only care about the price of the product.

We are RS group, have been specializing in the production and sale of various types of refractory castables for many years. In the refractory market has a good reputation, if you have a demand for refractory products, welcome to contact us for more details.

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High Strength Wear Resistant Castable Performance

High strength wear resistant castable is mainly composed of powder mineral additives and high strength aggregate. Through constant research and design, it has many advantages in performance. For example, the integrity is strong, the construction is simple, the wear-resisting loss is small, the intensity is high. Because of the addition of components with high polymer, so, the base concrete bond is more solid. In terms of price is also relatively preferential, can be said to be a cost-effective refractory products.

The series wear resistant castable is a cement - based composite single - component dry mortar. It is mainly made up of high-strength cement, mineral admixture, high-strength aggregate and anti-crack wear-resisting agent through industrial production.

High Strength Wear Resistant Castable Performance 

1. High strength, high anti-wear, anti-impact, anti-erosion, anti-oil permeability;
2. Good flame retardant, low water absorption, high and low temperature resistance;
3. Good durability and long service life;
4. Simple construction, quick operation and easy to grasp;
5. Good integrity, easy to repair, not easy to fall off;
6. Non-toxic, tasteless, green, no physical damage to operators.

High strength wear resistant castable field water gently use, good construction workability, through artificial rendering in a bunker or trough anti-wear layer of surface to form certain thickness after normal maintenance can meet the technical requirements, with high wear resistance, with the base concrete high bonding strength, strong impact resistance, high compressive strength, good durability and long service life, etc.

This series of refractory castable is specially used for the anti-wear layer lining of slag gullies, ore chutes, coal discharge chutes, hopper and silos in metallurgy, coal, thermal power, chemical, cement and other industries, as well as the anti-wear layer of sluice gates and discharge hoppers in projects such as water conservancy, hydropower, port and wharf, etc., so as to protect the foundation concrete (or steel silos).

About the performance of high strength wear resistant castable must be after my introduction above, you have a general understanding. If you need to purchase refractories, please contact us. RS group specializes in the production and sale of refractory materials, a complete range of refractory products, quality assurance, welcome to consult.

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Corundum Wear Resistant Castable For CFB Boiler

CFB boiler is a thermal equipment used in metallurgy, electric power, building materials and other industries, which can improve the power and thermal energy. CFB boiler needs to burn different materials to maintain the supply of energy, burning materials in the CFB boiler to carry out high-speed collision, the flow of the boiler scour and material scour boiler liner. For example. CFB boiler does not use good refractory as the lining, then in a short period of time will cause the fluidized bed boiler cannot carry on the normal operation. Through continuous research, RS group produces corundum wear resistant castable for CFB boiler, which has the characteristics of thermal shock resistance and high wear resistant. Can better solve the CFB boiler lining.

The corundum wear resistant castable for CFB boiler is a kind of high quality refractory castable which is mainly made of high quality corundum, alumina and other refractory raw materials as refractory aggregate and mixed with additives, steel fiber and binder. It is the first choice refractory material for CFB boiler lining. We are committed to the production of a variety of refractory castables, you are welcome to come to consult.

Corundum wear resistant castable for CFB boiler is mainly used in combustion chamber, furnace chamber dense phase zone, furnace outlet flue, furnace bottom, cyclone separator, cold air chamber and so on. Welcome to inquire, we will serve you wholeheartedly.

High quality wear resisting castable has good wear-resisting property and impact resistance, which can achieve good use effect for parts that are not easy to use firebrick. CFB boilers of different structures have different requirements when customers choose refractory materials. Zhengzhou Rongsheng Kiln Refractory Co.,Ltd.  can adjust the formula of wear-resisting castable according to the actual situation, and produce high quality refractory castable for CFB boiler to meet the demand of lining.

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Lightweight Insulation Castable Supplier

Lightweight insulation castable binder and moisture content is higher, the fluidity is better, according to the use of the conditions of the use of more materials and binder to choose. It can be directly poured into the lining body, and can be made into a precast block for use. This series of insulation castable is easy to construct and is an ideal product for the construction of alkali corrosion-resistant parts at high temperature.

Lightweight insulation castable supply with good workability, strong adhesion, initial setting time and construction operation time. And also has the strength of rapid growth, strong permeability, do not need to undergo acidification treatment, easy to ensure the masonry ash joint of the dense and full, can significantly improve the chimney lining wall air tightness, integrity and lining anti-corrosion ability. It is the ideal cementing material for the lining of high chimney, high temperature flue and air duct, and it can also be used in the acid-proof tank, tank and other acid-proof engineering in the industries of petroleum, chemical industry and nonferrous metallurgy.

Lightweight Insulation Castable Feature

1. High operating temperature, excellent thermal insulation performance;
2. Small volume density, small thermal conductivity, effectively reduce heat loss;
3. Good workability and strong adhesion;
4. Chemical erosion resistance, strong resistance to acid or alkaline gas;
5. The overall structure of pouring integral lining is strong, air tightness is good, and has a certain anti-corrosion ability.

Lightweight insulation castable has a wide range of applications and is widely used in the lining of kilns, thermal equipment, flue pipes and chimneys in metallurgical, mechanical, petrochemical, power and building materials sectors. This series of heat preservation castable can not be in direct contact with the flame, mainly used for heat insulation lining, can be directly used in the furnace solution or solid medium contact working lining, all kinds of heating furnace and heat treatment furnace working lining, can greatly save energy consumption.

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High Alumina Castable Refractory For Sale

High alumina castable refractory is made of high alumina clinker as aggregate, refractory clay as powder, and then aluminate cement and sodium tripolyphosphate are added. Its operating temperature is 1400~1550℃.

This series of high alumina refractory castable can be used as the lining and burner of various heat treatment furnaces, hot blast furnace, heating furnace, electric furnace steel groove, high temperature section of lime shaft kiln, rotary kiln head, power plant boiler and so on.

High Alumina Castable Refractory Characteristics

1. Good thermal shock resistance;

2. Good abrasion and erosion resistance;

3. High mechanical strength;

4. Dense volume density, low porosity, strong resistance to slag or solution permeability.

This series of refractory castables should be fully stirred dry material and then added water when making high aluminum castable mud. The water content should be strictly controlled to avoid affecting the effect after pouring. When making high aluminum mortar, it is necessary to use a mixer to mix. Manual mixing is prohibited. In addition, we need to make it according to the required amount of use. The finished refractory castable needs to be used up within 30 minutes. If there is condensation, it cannot be used again.

High aluminum castable refractory for sale, in the construction to pay attention to avoid anchorage parts, according to the design to determine the pouring thickness, can not be cast at will. After pouring and baking, pay attention to the heating speed and time, not too fast heating. After demoulding, check the pouring body, if there is a construction problem, according to the situation of rework production, to ensure the practicality of pouring body.

High alumina refractory castable can also be used as high temperature wear-resistant lining in cracking reactors. Blast furnace iron groove, cupola iron groove, molten iron pretreatment with integral powder gun lining. It can also be used to make large precast block and furnace lining. We are committed to the production of high quality refractory castable, products of high quality and reliable, reasonable price, worthy of customer trust, you are welcome to order.

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