High-strength and lightweight castables are mainly made of mullite hollow spheres, alumina hollow spheres, ultrafine powder, etc., and cement as a binder. This series of castables have high strength, stable volume, low thermal conductivity, and good thermal insulation. It is suitable for the working lining of various industrial kilns and other high-temperature energy-saving parts due to the small change rate of the reburning line.

Our company's high-strength light-weight castables are developed for some industrial kilns and thermal equipment for light-weight thermal insulation castables that require low thermal conductivity, as well as wear resistance, pressure resistance, tensile strength and other strength requirements. It is "light weight and high strength". For example, the lightweight castable with a bulk density of 1.15g\/cm3 has a compressive strength of 2030Mpa at 110 degrees Celsius and a flexural strength of 4.5Mpa; a lightweight castable with a bulk density of 1.6g\/cm3, 110 The compressive strength in degrees Celsius is up to 4050Mpa, and the flexural strength is up to 7Mpa, which is comparable to the strength of some heavy castables. The operating temperature is 1000 degrees Celsius. The castable also has acid and alkali resistance properties.

High-strength and light-weight casting physical and chemical indicators