Direct-blowing taphole castable

Straight-blow pipe castables are unshaped refractory materials used as linings for blast furnace straight-blow pipes—critical components connecting hot stoves to the tuyeres of the blast furnace. These materials are applied via a casting process to form a dense protective layer, designed to withstand the intense thermal shock and abrasive wear caused by high-temperature hot air (1200–1450°C), as well as coal powder jet erosion and thermal cycling. They exhibit exceptional wear resistance, thermal shock resistance, and corrosion resistance. Selecting the right straight-blow pipe castable requires careful consideration of factors such as blast furnace wind temperature, coal powder injection rate, and air supply parameters. By optimizing both the material formulation and construction techniques, it’s possible to strike an ideal balance between lining durability and overall blast furnace operational efficiency.

Iron-Molten Steel Ladle (Can) Refractory Material

Iron ladle castables are unshaped refractory materials used as linings inside iron ladles—critical vessels designed for holding and transporting molten iron. These materials are applied via a casting process to form a dense working layer, which primarily withstands the abrasive action of molten iron at temperatures ranging from 1450°C to 1600°C, along with slag erosion and repeated thermal shock conditions. They exhibit excellent resistance to slag penetration, outstanding abrasion resistance, and superior thermal stability. Selecting the right type of iron ladle castable requires careful consideration of factors such as the composition of the molten iron (e.g., levels of Si, S, and Ti), the ladle’s volume, and its turnover frequency. By optimizing the raw material mix and construction techniques, it’s possible to strike a balance between refractory longevity and metallurgical efficiency.

Castable for sintering machines

The castable material used in sintering machines is an unshaped refractory designed for equipment involved in the sintering process. It’s formulated by proportionally mixing refractory aggregates, powders, binders, and additives, then shaped through casting before use. Its core design addresses the extreme conditions of high temperatures and abrasion typical in sintering processes. Moreover, the composition of the sintering machine castable can be tailored based on the specific characteristics of the sintered materials—such as alkalinity and temperature—to achieve an optimal balance among high-temperature resistance, wear resistance, and chemical erosion protection. As a result, this material plays a critical role in extending the service life of sintering equipment.

Briquetting plant castables

The ramming material for pelletizing is an unshaped refractory designed specifically for the pelletizing production process. It is used in high-temperature, wear-resistant areas such as pelletizing kilns and conveying equipment. This material is produced by mixing refractory aggregates, powders, binders, and additives, then casting and shaping it into the desired form. By adjusting its formulation, the ramming material can be tailored to suit various pelletizing processes—such as acidic or basic pelletizing—and serves as a critical component in extending the service life of equipment on the pelletizing production line.

Burning Rotary Kiln Castable Material

The castable for rotary kiln firing is an unshaped refractory material specifically designed for lining the high-temperature section of rotary kilns. It is formed by mixing refractory aggregates, powders, binders, and other components into a pourable consistency. Tailored to withstand the unique challenges of rotary kiln operation—such as high temperatures, abrasion, and chemical erosion—the formulation of this castable is carefully adjusted based on factors like the kiln's internal material characteristics (e.g., alkali content, viscosity), temperature distribution, and rotational speed. As a result, this material plays a critical role in extending the service life of the kiln lining and reducing maintenance frequency.

Refractory castables for ferroalloy furnaces

Refractory castables for ferroalloy furnaces are specially designed, unshaped refractory materials tailored for the high-temperature, highly corrosive, and severely eroded areas of these furnaces. They are produced by mixing refractory aggregates, powders, binders, and additives, then casting them into shape. The formulation of these castables must be customized based on the specific alloy being smelted (e.g., silicon-based, manganese-based, or chromium-based), the composition of the furnace slag, and the operational process—making them a critical refractory material that ensures the long-term, reliable operation of ferroalloy furnaces.

Castable for ferroalloy ladles (tanks)

The castable material used for ferroalloy ladles (tanks) serves as the lining material inside containers designed for holding and transporting molten ferroalloys. It must withstand high-temperature molten iron erosion, slag attack, and thermal shock. Composed of a blend of refractory aggregates, fine powders, and binders, the formulation of the ferroalloy ladle castable needs to be tailored specifically according to the melting temperature of the ferroalloy type (e.g., silicon-based, manganese-based, or chromium-based) and the characteristics of the associated slag. This material is critical for ensuring safe transportation of ferroalloys and significantly extending the service life of the ladle itself.

Prefabricated Iron Gutter Components (Blocks)

Iron trough prefabricates are customized, factory-produced refractory components designed specifically for the demanding conditions of blast furnace iron troughs—channels used to transport molten iron. These preformed elements are made from refractory materials that are shaped in advance at the factory, allowing for direct on-site installation. They serve as critical protective linings within the iron trough, effectively resisting molten iron erosion, high-temperature corrosion, and thermal shock damage. Prefabricated components boast excellent dimensional stability after undergoing high-temperature baking, making them ready for immediate use while minimizing the risk of cracking—commonly caused by improper curing of castable materials during the baking process.

Mud-on-mud

Mud sleeve material is a refractory used for constructing or repairing the mud sleeves at blast furnace iron tapping openings. It boasts excellent bonding properties and high strength. Using the ramming device of a mud gun, the material is compacted onto the tap frame to form the mud sleeve, ensuring a tight fit between the gun head and the sleeve during plugging. This prevents mud leakage during the clogging process while simultaneously protecting the refractory lining of the tap opening from high-temperature oxidation and erosion by molten slag and iron.

Mud-cast prefabricated parts

The mud sleeve prefabricates are refractory components pre-molded from mud-sleeve material, designed primarily for the rapid installation and replacement of blast furnace tap-hole mud sleeves. Produced via an industrialized manufacturing process, these prefabricates transform traditional on-site construction into "assembly-based" operations, offering an efficient solution for refractory maintenance at blast furnace tap holes—especially ideal for smelting environments that prioritize high productivity and minimal downtime. They effectively address issues such as tap-hole spatter and excessive gas flames in the tap-hole area.

Iron Tuyere Repair Material

This is a functional refractory material specifically designed for the rapid, hot-state repair of iron tapping channels in blast furnaces. It strikes an excellent balance between construction efficiency—particularly its ability to eliminate the need for removing old linings and enabling hot repairs—and the durability of the repaired area, showcasing outstanding resistance to erosion and scouring. As a result, it effectively extends the overall lifespan of the iron channel, playing a critical role in ensuring stable furnace operations and boosting production efficiency. Key raw materials include corundum, bauxite, silicon carbide, carbon-based materials, and pure calcium aluminate cement, among others.

Blast Furnace Spray Coating

Used for repairing or constructing blast furnace linings, this spray-applied, unshaped refractory material boasts high adhesion, minimal rebound, excellent dimensional stability and strength, as well as superior resistance to chemical erosion and thermal shock. It offers significant advantages in terms of construction efficiency—particularly for rapid repairs and intricate shape applications—and provides long-lasting protection for furnace linings. As a result, it plays a critical role in ensuring the extended lifespan, high efficiency, and safe operation of blast furnaces.

Spray Coating for Hot Blast Stoves

Hot Blast Stove Spray Coating: Designed for application on the arch roof, heat storage chambers, combustion zones, and other critical areas of hot blast stoves, this spray coating forms an insulating or erosion-resistant layer. It is specifically engineered to withstand the harsh conditions of high-temperature flue gas exposure (1200–1350°C) as well as thermal shock cycles, offering excellent thermal insulation, superior thermal shock resistance, and outstanding structural stability. Applications include insulating spray coatings for hot blast stove arch roofs, wear-resistant protective layers on the surface of regenerative checker bricks in heat storage chambers, and erosion-resistant repairs for combustion chamber linings—enhancing overall thermal efficiency while significantly extending the service life of the equipment.

Main Trench Non-Baked Ramming Material

The main-channel unbaked ramming material is an unshaped refractory designed for blast furnace tapholes. It can be used directly without the need for baking, making it ideal for constructing, repairing, and maintaining blast furnace tapholes. This material enables rapid restoration of the taphole’s operational functionality, significantly reducing downtime during blast furnace shutdowns.

Baking-Free Ramming Material for Tuyeres

The non-baking ramming material for the runner section of a blast furnace is an unshaped refractory material designed specifically for use in the runner area. It has the unique feature of being ready-to-use without the need for baking. Primarily used for lining and repairing the runner sections of medium- and small-sized blast furnaces, it can also be applied to rebuild worn-out runners.