What are the most commonly used refractory castables for heating furnaces?

In the metallurgical industry, heating furnaces are equipment (industrial furnaces) that heat materials or workpieces (usually metals) to the rolling temperature for forging. Heating furnaces are used in many industries such as petroleum, chemical industry, metallurgy, machinery, heat treatment, surface treatment, building materials, electronics, materials, light industry, daily chemicals, and pharmaceuticals. The following are the most commonly used refractory castables for heating furnaces.

Refractory Mullite castable

Because the mullite castable with high thermal shock resistance, erosion resistance, good erosion resistance, good volume stability, and high use temperature, mullite castables are generally used in furnace walls and roofs of heating furnaces. And key parts such as pressing beams, or used to prefabricate burner bricks.

Refractory Anti-dry slag castable

Anti-dry slag castable suitable for the bottom of the heating furnace and the place where iron oxide slag is deposited. The use temperature can reach 1600℃. Its main characteristics are: high refractoriness, good thermal shock resistance, and good resistance to the corrosion of iron oxide slag in the heating furnace.

Refractory Lightweight castable

Lightweight castable suitable for heat insulation layer of furnace wall, furnace roof, flue and other parts. High-strength lightweight castables can also be used as working linings for smoke exhaust systems and hot air ducts. It is characterized by low volume density, low reburning line change rate (good thermal stability), low thermal conductivity, and certain singularity. It combines the advantages of refractory materials and thermal insulation materials.

Refractory Bauxite cement castable

Bauxite cement castable is generally used in the low temperature zone of the heating furnace, the flue part and the heating furnace body of the heating furnace not higher than 1300℃ for you. It uses aluminate cement as the cementing agent to combine various refractory bone A castable produced by mixing powder and powder in a certain proportion, has the characteristics of fast solidification, high strength, thermal shock resistance and slag resistance. It not only satisfies the refractory performance of the heating furnace body, but also improves the construction performance of the furnace body.