Refractory Castable
Your Professional Refractory Castable Supplier
Our goal is to become your true partner in the field of refractory castable in China. Kerui refractory is the concentration of refractory industry in China. Kerui is deeply rooted in the high-temperature kiln industry, building its own R&D centre. We have a skilled engineering team dedicated to refining every stage, from product development and process improvement to production oversight, ensuring every product delivered meets rigorous quality and performance standards. The price is competitive and the product is quality-assured, which is a good choice for your long-term cooperation.
Why Choose Us
Product application: Our main products include more than 200 varieties of organic pressed refractories, unshaped refractories, bricks for carbon roasting furnaces, functional refractories, etc. The products are used in high-temperature kilns and equipment in metallurgy, chemical industry, building materials, electricity, non-ferrous metals, carbon industry and other industries.
Product market: Our refractory products have been sold to Russia, South Korea, Ukraine, Brazil, Indonesia, Iran, Thailand and other countries.
Our production capacity: Our annual production capacity of shaped refractory products is 150,000 tons, and the capacity of unshaped refractory products is 100,000 tons.
Our services: In the pre-sales stage, our team of experts will recommend the most suitable products according to the needs of customers and provide detailed technical consultation. During the sales period, we ensure timely delivery and provide installation guidance. For after-sales, we provide long-term technical support, warranty services and spare parts to help customers maximize the use of products and get reliable maintenance during use.
Saves time: The biggest industrial advantage that castable refractories offer is the time they save. Take the case of a furnace, for example. The castable refractory is made before its usage. Therefore, it significantly reduces the construction time of the furnace. Additionally, the castable refractory does not require extra baking time. That allows one to use their time efficiently.
Ease in usage: Castable refractories are pretty easy to use. But what is even better is how easily they can be cast in different shapes. Moreover, when treated and prepared, castable refractories can meet harsh conditions without noticeable changes.
Refractory Castable Specification
|
Mullite castables |
MJ55 |
MJ60 |
MJ65 |
MJ70 |
|
Al2O3 content, % ≥ |
55 |
60 |
65 |
70 |
|
Bulk density, g/cm3 ≥ |
2.2 |
2.3 |
2.4 |
2.5 |
|
Flexural strength, MPa ≥ |
7 |
7 |
8 |
9 |
|
Compressive strength, MPa ≥ |
30 |
35 |
40 |
45 |
|
Linear variation(%) ≤ |
±0.5 |
±0.5 |
±0.5 |
±0.5 |
|
Maximum use temperature, ℃ |
1450 |
1500 |
1550 |
1600 |
Composition of Refractory Castable
Designed to resist extreme thermal and mechanical stress, castable refractory is a complex mix of high-performance refractory aggregates, innovative bonding agents, and precision-engineered additives. Fundamentally, alumina, silica, magnesia, and calcium aluminate cement provide them with exceptional heat resistance, chemical inertness, and structural integrity. The addition of microsilica, stainless steel fibers, and deflocculants improves thermal shock resistance, robustness, and workability. Designed for seamless application and monolithic endurance, this material best embodies cutting-edge refractory science in industrial resilience.
Features of Refractory Castable
Mullite castables can be used at high temperatures and as working liners in direct contact with flames. Suitable for petrochemical tubular heating furnace, light diesel oil, ethane cracking furnace lining, atmospheric pressure reducing furnace, sulfur recovery device, steam boiler, turtle mesh insulation layer, double-layer bobbin insulation single layer, other industrial furnace doors, Observation fire hole, observation hole door lining, etc.
Application of Refractory Castable
Wear resistant refractory castable has a wide range of uses, if it is used in the power plant circulating fluidized bed boiler wear-resistant refractory castable, basically is to add electric fused corundum preparation, also add a certain proportion of black silicon carbide.The binder is pure calcium aluminate cement with silica powder.But the circulating fluidized bed boiler has the thermal efficiency high, the low pollution discharge, adapts the coal kind to be broad and so on the merit, most USES in the thermal power plant and the heating project
The high strength wear resisting refractory castable is widely used in power generation industry such as coal unloading ditch, coal scuttle, coal storage bin, dry coal grid, dump machine, slag dredging machine and water treatment.Chemical industry anti-corrosion ground, pump foundation, etc.Coal industry gangue bin, medium barrel, scraper, bucket lift machine, chute, sieve funnel and other wear-resistant lining board.Mixing silos, sintering silos, feeders and pelleting machines in iron and steel industry.
Production Process of Refractory Castable
Refractory castables are created from science, engineering, and material precision to provide high-performance thermal solutions. It begins with the selection of premium raw materials comprising high-purity alumina, silica, and magnesia. A necessary binder, calcium aluminate cement (CAC) ensures exceptional cohesion, durability, and setting properties.
These raw components are then thoroughly mixed under regulated circumstances, including microsilica, deflocculants, and stainless steel fibers to improve workability, flowability, and thermal resilience. Before starting a critical curing and drying phase when moisture is removed and structural integrity is strengthened, the mixture is poured, vibrated, or gunned into molds or furnace linings depending on the application.
Packing and Shipping of Refractory Castable
|
Packing |
In wooden pallets or crates |
|
Shipping |
Shipped by road, sea, rail |