Blast Furnace Clay for Ferroalloy Plants

Ferroalloys are crucial additives in steelmaking, used to adjust the chemical composition of steel and enhance its performance. Ferroalloy furnaces are specialized industrial melting devices designed specifically for producing ferroalloys. These smelting equipment types include submerged arc furnaces, blast furnaces, electric arc furnaces, and induction furnaces. As ferroalloy furnaces evolve toward larger-scale operations, increased automation, energy efficiency, and environmental sustainability, the demands on their furnace sealing materials are steadily rising. Operators have already recognized the critical importance of these materials, and simply copying or transferring existing solutions no longer meets modern production requirements. Zhengzhou Kexin Furnace Materials Co., Ltd. can develop tailored operational strategies and produce customized products based on key parameters such as equipment operating principles, smelting environments, product characteristics, and specific handling methods—ensuring that customer needs are met more effectively than ever before.

Baking-Free Ramming Material for Ferroalloy Furnaces

Iron alloy furnace non-baked ramming material is an unshaped refractory designed for lining construction or repair in iron alloy furnaces. Its key feature is that it can be used directly without the need for baking, simplifying the construction process and significantly reducing the lining installation timeline. Commonly applied to areas such as furnace bottoms and walls—both during new construction and repairs—it’s especially well-suited for smelting environments where high construction efficiency is critical.

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.

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.

Charging Machine Tamping Material

The ramming material for iron casting machines is an unshaped refractory material used in areas where molten iron is received and cast into shape. It is applied via a tamping process, requiring excellent resistance to high-temperature molten iron erosion, outstanding wear resistance, and superior thermal shock resistance. By optimizing the hardness of its aggregate and enhancing the performance of the binder, this ramming material not only ensures efficient iron casting but also helps extend equipment lifespan while reducing maintenance costs.

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.

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.

Lining castable for the furnace hearth

It is an advanced refractory material designed for the integral casting of blast furnace hearths. Thanks to its exceptional self-leveling properties, it enables the seamless filling of intricate structures without the need for vibration, ensuring rapid, efficient, and high-quality construction of the hearth lining. By optimizing both material performance and construction techniques, this solution effectively addresses specific challenges in the furnace’s working environment—such as molten iron erosion, alkali metal attack, and thermal shock—ultimately achieving the dual goals of safe furnace operation and extended equipment lifespan.

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.

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.

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.

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.

Coke Oven Spray Coating

Coke oven spray coating is an unshaped refractory material used for repairing coke oven structures (such as furnace walls, furnace roofs, and regenerative chambers). Applied via a spraying process, it forms a protective layer over damaged areas, effectively addressing high-temperature gas erosion, mechanical wear, and thermal shock damage. This coating boasts excellent adhesion, superior thermal shock resistance, and strong anti-slagging performance. It’s ideal for repairing worn-out coke oven walls, protecting the surfaces of regenerative chamber checker bricks, and providing insulating coatings on furnace roof sealing walls—ultimately extending the service life of the coke oven while minimizing heat loss and preventing gas leakage.

Magnesia-based gunning material

Zhengzhou Kexin Refractory Materials Co., Ltd. uses high-purity, premium-quality MgO, alumina, corundum, magnesia-alumina spinel, and magnesia-based plasticizers as primary raw materials, combined with environmentally friendly carbon binders and resins through a mixing and kneading process. This product boasts excellent thermoplasticity and an ideal drying-curing time, ensuring that the magnesia-based gunning mix exhibits outstanding creep behavior at high temperatures in slag-iron tapping openings. As a result, it easily forms a stable, dense mud layer that effectively protects the refractory materials in the slag-iron tap area. Moreover, the magnesia-based gunning mix reacts with MgO, FeO, and SiO₂ present in the molten slag and iron to form high-melting-point compounds, significantly enhancing the material's resistance to erosion and scouring by the molten slag and iron.