Tabular corundum mullite bricks are made primarily of tabular corundum with mullite as an auxiliary material. They are formed by adding appropriate amounts of high-purity alumina, ultrafine silica powder, and additives, and then subjected to high-pressure pressing using a 300t friction press. The bricks are then fired at high temperatures in an oxidizing atmosphere. Tabular … Read more
In the energy-saving and consumption-reducing design of industrial kilns, lightweight insulating bricks are a key insulation material. Their material selection and volumetric density configuration directly affect the kiln’s thermal efficiency, structural stability, and operational economy. Rongsheng Refractory Materials Manufacturer recommends the most suitable Lightweight Thermal Insulation Bricks products for the production needs of high-temperature industrial … Read more
Silicon carbide (SiC), also known as corundum, is rarely found naturally; industrially used silicon carbide is all synthetically produced. Pure silicon carbide is a colorless, transparent crystal. However, industrially produced silicon carbide, due to impurities such as free carbon, iron, and silicon, exhibits various colors, including yellow, black, dark green, and light green, with transparency … Read more
For ladle refining operations, magnesia-chrome refractories remain the most erosion-resistant refractories. The problem with these refractories is that it’s difficult to reconcile erosion resistance and thermal shock resistance. Specifically, traditional direct-bonded magnesia chrome bricks with high erosion resistance often have low thermal shock resistance; conversely, high thermal shock resistance often results in lower erosion resistance. … Read more
Refractory bricks made from natural silica-containing rocks, primarily quartz, are called silica refractory bricks. Rongsheng Silica bricks contain at least 93% SiO2 and no more than 1.5% Al2O3, as even a small amount of alumina significantly reduces refractoriness. A key aspect of silica brick manufacturing is the rate of conversion between different silica variants. Get … Read more
Phosphorus impregnation of high-alumina bricks refers to placing fired high-alumina bricks in a container and impregnating them with phosphoric acid for more than two hours. After low-temperature treatment, their physical properties are significantly improved, making them suitable for use in harsh industrial furnace linings. Indicators of High-Alumina Bricks After Phosphating According to actual tests, after … Read more
The selection of furnace wall materials for waste heat boilers is of great significance in furnace wall design. Based on the materials constituting the furnace wall, furnace wall materials include refractory materials, insulation materials, sealing materials, and filling materials. Refractory materials for waste heat boiler furnace walls refer to non-metallic materials with a refractoriness of … Read more
The properties of silicon nitride-bonded silicon carbide bricks: They not only possess high density, high strength, good thermal shock resistance, high softening point under load, good thermal conductivity, and high resistivity, but also exhibit excellent resistance to melting and erosion by cryolite, aluminum fluoride, sodium fluoride, and calcium fluoride, as well as oxidation resistance. They … Read more
High-alumina bricks can be compared with anti-spalling high-alumina bricks in terms of raw materials and processes, performance characteristics, application fields, and costs. Raw Materials and Process Proportions Both high-alumina bricks and anti-stripping high-alumina bricks primarily use high-alumina bauxite as their raw material. However, anti-spassing high-alumina bricks incorporate zircon during the production process. This addition significantly … Read more
The refractory material for ferroalloy electric furnaces comprises three parts: furnace roof refractory material, furnace wall refractory material, and molten pool refractory material (furnace slope and furnace bottom). During ferroalloy smelting, the refractory materials in these different parts are under different working conditions. To ensure the normal operation of the electric furnace, refractory materials with … Read more
