Rongsheng Corundum-Mullite Castable Manufacturer

Corundum-mullite castable is a novel type of refractory material formulated using dense corundum and mullite as the aggregate base, combined with high-quality raw materials such as white corundum powder, α-Al₂O₃ micropowder, and fine mullite powder. Through precise proportioning and optimized processing, this material effectively integrates the advantageous properties of both corundum and mullite, delivering exceptional … Read more

How Should High-Alumina Bricks be Selected for Different Kilns?

Kilns are the “heart” of industrial production, and high-alumina bricks are the “armor” protecting this heart. Choosing the wrong bricks can lead to frequent kiln shutdowns and soaring costs, or even kiln lining collapse and safety accidents. However, faced with the wide variety of high-alumina bricks on the market, many people don’t know where to … Read more

Comparison of Alkali Erosion Resistance of Aluminosilicate Refractory Bricks Used in Cement Kilns

In recent years, with rapid economic development and accelerated urbanization, the amount of industrial and domestic waste generated has continued to increase, becoming a social problem that hinders urban development and affects the quality of life for residents. Cement kiln co-processing technology has achieved the “reduction, harmlessness, and resource utilization” of waste, yielding significant social, … Read more

How Should the Magnesia-Chrome Bricks be Laid on the Top of a Copper Self-Heating Smelting Furnace?

Taking a company’s self-heating copper smelting furnace as an example, it is mainly used to process nickel-containing copper concentrate. This copper concentrate has high nickel content, low iron content, low sulfur content, and no gangue. Based on the furnace conditions and the following principles for selecting refractory materials, we use high-quality magnesia-chrome bricks as the … Read more

Alkali Erosion Resistance of Silica-Mullite Bricks in Cement Kilns

Two silicon-carbide mullite bricks, commonly used in the low-temperature zone of cement rotary kilns, were randomly selected. One was silicon-carbide mullite brick 1680, and the other was silicon-silicon brick 1550. Alkali erosion resistance tests were conducted using the static crucible method. Samples measuring 80 mm × 80 mm × 80 mm were cut from each … Read more

Energy-Saving Refractory Materials

Energy-saving refractory materials, also known as energy-efficient refractory materials or lightweight insulating refractory materials, refer to refractory materials that significantly reduce heat loss in industrial kilns, lighten equipment weight, and lower production energy consumption while maintaining excellent high-temperature resistance through methods such as reducing material bulk density, lowering thermal conductivity, and optimizing structure. These materials … Read more

Silicon Nitride-bonded Silicon Carbide Bricks Used in Vertical Zinc Smelting Furnaces

Vertical ladle zinc smelting is an important zinc smelting process. The outer side of the vertical ladle furnace is in direct contact with a high-temperature flame of 1300-1340°C, while the inner side is in direct contact with zinc vapor and slag reaching up to 1200°C. It is subjected to high temperatures, oxidation, thermal shock, erosion, … Read more

New-Type Refractory Bricks for Gasifier Arches

The gasifier serves as the primary component of a pressurized coal-water slurry gasification unit, and the quality of the refractory bricks used in its construction is the principal factor determining the gasifier’s operational cycle. Gasifier operation entails conditions of extreme temperature and high pressure. Oxygen and coal slurry are injected into the gasifier through opposing … Read more

Mix Design, Properties, and Installation Procedures for Phosphate-Bonded Refractory Castables

Phosphoric acid reacts negligibly with acidic oxides at room temperature and does not undergo hardening; consequently, it is unsuitable for use as a binder in acidic refractory materials. In contrast, phosphoric acid reacts with amphoteric oxides (such as Al₂O₃) at room temperature to form a hard solid, and the reaction rate between them can be … Read more

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