Refractory sprayable castables consist of refractory aggregates and powders, combined with binders, mineral additives, plasticizers, and sintering aids. Water is added during installation to achieve the required spraying consistency.
Common base materials for sprayable refractories include silica–alumina, magnesia, corundum, and phosphate-bonded systems.
Refractory sprayable castable is a refractory material designed for spray application. Using specialized spraying equipment and compressed air, it is sprayed at high velocity onto the substrate, rapidly forming and firmly bonding to create a dense, continuous refractory lining.
It is commonly used as a protective layer on the inner surfaces of blast furnace and hot blast stove shells, as well as a working lining for blast furnace tops, gas outlet pipes, and dust collectors.
|
Indicators Project |
HX-CYA |
HX-CYB |
Acid-resistant Sprayable Castable |
|
Al2O3 % ≥ |
45 |
40 |
35 |
|
Fire Resistance ℃ ≥ |
1610 |
1530 |
1540 |
|
Bulk Density g/cm3 ≥ |
1.95 |
1.65 |
--- |
|
Flexural Strength (MPa after drying at 110℃) ≥ |
4.4 |
4.0 |
1.5 |
|
Linear Change Rate After Burning % |
1400℃×3h ±1.0 |
1300℃×3h ±1.0 |
1300℃×3h ±1.0 |
|
Thermal Conductivity [W/(m.k)] ≦ |
--- |
0.75 |
--- |
|
Safe Operating Temperature ℃ |
1200~1400 |
1200~1300 |
1300 |
Mechanized spray application is 6–15 times faster than traditional bricklaying. It eliminates the need for formwork and stripping, significantly reducing labor intensity, installation time, and formwork costs. It is particularly suitable for high-altitude, irregularly shaped, and confined-space construction.
Fast installation with excellent adaptability and repair flexibility. The material can be sprayed vertically or overhead, effectively covering complex geometries such as furnace crowns, hot air ducts, burner openings, and flue channels-areas where traditional lining materials are difficult to install.
Reduced maintenance cycles and minimized downtime. Faster installation and repair significantly lower shutdown losses and improve overall equipment utilization.
●Metallurgy: Linings and fire protection for blast furnaces, converters, EAFs, and reheating furnaces.
●Power Generation: Fireproofing solutions for boilers, ducts, and stacks.
●Petrochemical: High-temperature protection for reactors, pipelines, and storage facilities.
●Building Materials: Reliable fire protection for cement and glass production systems.
●Mechanical Engineering: Thermal protection for forging and heat treatment equipment.
Packaging:
Available in 50 kg bags, 1-ton jumbo bags, palletized packaging, and sealed packaging. Custom packaging options are available upon request.
Storage:
Store in a dry and well-ventilated environment. Product performance remains stable when stored under recommended conditions.
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