Industry News

Solutions to Hardening Time of Self-Flowing Castables in Low-Temperature Environments

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With the development of monolithic refractory castables, the proportion of castables used in heating furnace linings is increasing. Among them, low-cement self-flowing castables are becoming more widely used and account for a larger proportion. By rationally selecting raw materials and particle size distribution, and introducing ultrafine powders and high-efficiency dispersants, a self-flowing castable for heating … Read more

Application of Micro-expansion Refractory Castables in Steel Rolling Heating Furnaces

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Micro-expansion refractory castables are a new type of refractory castable developed using clay-bonded and low-cement castable technologies. They are primarily used in various thermal equipment, such as steel rolling mills, achieving satisfactory economic benefits. Steel rolling mills are numerous and numerous, operating temperatures generally below 1400°C, and they operate intermittently, requiring shutdowns and cooling every … Read more

Construction of Refractory Plastic Material for Heating Furnace Roof

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Refractory plastic is a material composed of refractory aggregates of a defined particle size distribution, powders, binders, and admixtures, which are then mixed, kneaded, and extruded into blocks or lumps. This amorphous refractory material retains excellent plasticity after a period of packaging and storage, allowing it to be applied by ramming. Refractory plastic offers advantages … Read more

Key Points of Monolithic Refractory Materials for Cement Kilns

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Monolithic refractories are primarily used in irregularly shaped or deformed areas of new dry-process cement kilns, such as the preheating system, kiln tail, kiln head, coal injection nozzles, tertiary air ducts, coolers, and waste heat power generation. Monolithic refractories come in a wide variety of types, with significantly varying performance. Construction and maintenance significantly impact … Read more

Composition Optimization of Lightweight High-Strength Mullite Castables – Performance Enhancement

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With the implementation of the dual carbon strategy, high-temperature industries are facing increasingly stringent requirements for energy conservation and environmental protection, leading to an increase in the research and use of lightweight refractory materials. Mullite castables offer excellent properties such as a high refractoriness under load, good thermal shock resistance, and strong erosion resistance. They … Read more

Phosphoric Acid bonded Zircon Ramming Mass

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Zircon has high refractoriness, a low coefficient of thermal expansion, excellent thermal shock resistance, and excellent resistance to corrosion from molten steel and alkaline slag. Therefore, zircon has long been used as a high-grade refractory material. With the widespread application of oxy-fuel combustion technology, the increase in melting temperatures in glass furnaces, and the advancement … Read more

Are the Refractory Plastics Used for Boiler Lining the Same as Those Used for Ladle Lining?

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The refractory plastics used for boiler linings and ladles are different. This is because the refractory plastic used for boiler linings is bonded with phosphoric acid, while the refractory plastic used for ladles is bonded with resin. Refractory Plastics for Boiler Linings and Ladles Refractory plastics used for boiler and heating furnace roofs are made … Read more

Application of Lightweight High-Strength Castables in Ladle

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The purpose of ladle cover: Controlling the temperature drop of molten steel during transportation, refining and pouring has become a key factor in the innovation of the steelmaking industry in recent stages. The change of ladle thermal state is also one of the important factors for the converter to formulate the temperature compensation system of … Read more

Composition Optimization and Performance Enhancement of Lightweight High-Strength Mullite Castables

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Lightweight and high-strength refractory materials, using microporous mullite, mullite fine powder, alumina powder, alumina hollow balls and silica powder as raw materials, and cement as binder, were prepared to prepare lightweight mullite castables. The effect of the amount of alumina hollow balls added (addition mass fraction was 0, 3%, 6% and 9% respectively) on the … Read more

Sintering Aid for High Alumina Refractory Castables

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Sintering aids (SA) have great potential in enhancing the thermodynamic properties of refractory materials at medium temperatures (6001 200°C). Boron-based compounds are suitable because the phase transformations (i.e., decomposition, oxidation, etc.) they undergo at relatively low temperatures can lead to the generation of a boron-rich liquid phase and transient liquid phase sintering. 5 Sintering Aids The … Read more

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