Lightweight heat-resistant castable is one of the amorphous refractory materials. In the preparation of heat and insulation castable, the main selection of refractory light aggregate and powder, and select the corresponding binders and additives to prepare castable. The properties of light castable and heavy castable are basically the same, but the loading softening temperature test is 0.1MPa.

In the current energy shortage, saving energy is something that Z needs to pay attention to. Light weight heat resistant castable has the characteristics of energy saving and heat resistance. Light insulation castable has good insulation performance because of low bulk weight and low thermal conductivity. And there are many kinds of lightweight heat-resistant castables, but the construction of industrial kiln generally uses lightweight heat-resistant castables as insulation layer. The reason is that the refractoriness of light heat insulation castable is low, and the general use temperature is 600 to 900, which is more suitable for boiler construction below 1000.

The lightweight heat-resistant castable has the characteristics of heat preservation, heat resistance and energy saving. The main reason is the low thermal conductivity of lightweight heat-resistant castable. Furnaces and thermal equipment in metallurgical, chemical, electric power, building materials and other industries generally use lightweight heat-resistant and heat-insulating castables, but only for thermal insulation construction. However, some of them can be used as working layers or load-bearing members, all of which achieve good results. In addition, only insulating plates were used on the part of the tundish that came into contact with commodity metal or slag, and good results were determined.

Moreover, compared with other castables, the price of light heat insulation castables is relatively cheap, and the market price of light insulation castables is between 1000 and 2000 yuan. It is a relatively low-cost amorphous refractory in the refractory, and the boiler is built with lightweight insulation castable. According to the performance of the castable, it can not only save the use of materials, but also reduce the wear degree and temperature loss of the boiler during operation.