Lightweight thermal insulation bricks are lightweight bricks with thermal insulation functions, mainly used for insulation, energy conservation, and reducing heat waste. Lightweight high alumina bricks, also known as high alumina insulation bricks, are a lightweight insulation material with an alumina content of over 48%, mainly composed of mullite and glass or corundum. Lightweight insulation bricks are widely used in high-temperature kilns in industries such as metallurgy, chemical engineering, electronics, and glass, with characteristics such as small specific weight, high strength, low thermal conductivity, good insulation effect, and high service temperature. Used for the construction of industrial kilns in industries such as security, chemical, metallurgical, mechanical, building materials, electronics, coking, shipbuilding, pharmaceuticals, rubber, etc., with good thermal insulation performance. Reduce kiln weight, reduce kiln walls, change kiln structure, increase heating speed, reduce energy consumption, improve labor conditions, and improve work efficiency. Lightweight insulation bricks are widely used in high-temperature kilns in industries such as metallurgy, chemical engineering, electronics, glass, etc., due to their high temperature resistance, density, strength, wear resistance, and resistance to acid and alkali corrosion.