Corundum mullite brick means that the main crystalline phase is α- Al2O3 corundum is a fireproof, thermal insulation material. Because it has the characteristics of high temperature resistance, high compressive strength, high tensile strength, corrosion resistance, insulating layer and good tightness, with the development trend of modern science and technology, its application scope is becoming wider and wider. About 5% of the produced and processed aluminum oxide is used for fire prevention, thermal insulation materials, 5% for metal composites, electronic components, petroleum, chemical enterprises, pottery, paper industry and other industries, and more than 90% of the power supply and distribution system is used in smelters. Because many aluminum oxide plants attach great importance to the production and processing of aluminum oxide, such as alumina powder and low sodium aluminum oxide γ- Al2O3. Ultra fine α- Al2O3 silicon powder and high purity Al (OH) 3, etc. At present, there is no aluminum oxide manufacturer specialized in technology for the production and processing of fireproof, thermal insulation materials. Due to the variety of raw materials used in corundum mullite brick and convenient and fast supply, in terms of production, processing and manufacturing technology, we can not only use the traditional production process of corundum mullite brick to produce and process steel jade fireproof, thermal insulation materials, but also use the method derived from traditional pottery to produce and process fireproof, thermal insulation materials, Therefore, after half a century of research, production and processing, the manufacturing process is becoming more and more perfect, and the type is continuously improved, which has become a fire-proof, thermal insulation material with a wide range of applications,

Its scope of application is as follows:

(1) Due to the characteristics of high temperature resistance, corrosion resistance and high wear resistance, it is used as a steel sliding nozzle, rare and precious metals in concentrator, aluminum alloy profiles, high-purity metal composites, stainless steel wire drawing of tempered glass, tongs and utensils for making tempered glass of laser generator; All kinds of high-temperature industrial kilns, such as fireproof, thermal insulation materials, pottery, lining (wall and pipe) of ironmaking blast furnace; Physics ware - spark plugs - heat resistant. Low silicon calcined corundum brick with SiO2 less than 0.5% is the recycling waste of carbon black, boron chemical enterprises, organic fertilizer, synthetic ammonia reactor and biomass fuel biomass gasifier.

(2) Due to the characteristics of high compressive strength, good wear resistance and high tensile strength, it is used as a prefabricated component of various vessels, pipelines and anti-corrosion pumps in the chemical enterprise system; Do mechanical parts. All kinds of die shells, such as wire drawing die, extrusion pencil lead die mouth, etc; Do CNC cutting tools, die shell metal composites, exo raw materials, human joints, closed grinding rings, etc.

(3) Due to its high-temperature insulation performance, it is used as the threading tube and maintenance tube of thermocouple, the cable sheath porcelain used in atomic reactor, and various other prefabricated components of high-temperature cable sheath, such as platinum rhodium thermocouple, even if the air permeability is guaranteed at 1720 ℃, the actual effect is poor.

(4) Al2O3 is an inorganic crystal with stable structure. When used under high frequency, high voltage and high temperature, its insulation performance is still excellent. In addition, the loss is not too large, and the relative dielectric constant is not too large. It is widely used in the electronic industry, such as solid integrated circuit chip integrated IC based thick steel tube base, shell, porcelain frame, microwave oven heating prompt frame, ballistic missile radar detection external antenna protective cover, etc.

(5) Steel jade commodity has good tightness and poor air permeability even at high temperature. Therefore, it is widely used in electromechanical pumps, such as making all kinds of large, medium and small pressure stabilizing tube shells with steel jade, and self-aligning roller bearing in-line packaging shells in solid microcircuits.

(6) Steel jade thermal insulation raw materials, such as corundum mullite brick, steel jade hollow ball and non-woven fabric, are widely used in the furnaces and rotary kilns of various high-temperature kilns, which are both high-temperature resistant and thermal insulation.

(7) Transparent steel jade products can be used to make LED tubes. Microwave oven heating fairing. In addition, Na- β- Al2O3 commodity is the chemical raw material for the production and processing of sodium sulfur battery. Corundum mullite brick fire safety products, especially in fire safety products, that is, high-temperature pottery, in addition to the production and processing of fire insulation materials, building materials decoration, electronic components, chemical enterprises and industrial equipment. Steel jade fireproof and thermal insulation material is a high-quality product.