Bauxite, one of the important raw materials for the production of brown corundum, has been labeled as a non-renewable resource, and its value is destined to only rise and not fall. Furthermore, the frequent launch of domestic alumina projects has seriously cut off the source of raw materials for the production of brown corundum. The battle for the bauxite mining rights that has been launched is imminent, which makes brown corundum production enterprises very worried. In addition, in the competition for raw materials, there is also the steel industry. Since iron filings are very important to the brown corundum production industry, corundum production enterprises even bite their teeth and swallow them.

Second: Since the reform and opening up, with the advantages of national resources such as bauxite, electricity, and human resources and strong market demand, China's brown corundum production has grown by leaps and bounds. In just 20 years, the annual production capacity has soared from less than 100,000 tons to more than 2,000,000 tons, and China has become the world's largest producer of brown corundum.

The crystal form of brown corundum is a reflection of the crystal structure. It has vitreous luster, has the opposite element of L33L23PC, has a specific gravity of 3.98, and is barrel-shaped, hexagonal columnar, and hexagonal bipyramid. Color rings (color bands) parallel to the cylindrical and conical surfaces often appear. ). Produced in relatively silicon-poor igneous and metamorphic rocks, and commonly found in alluvial placers. North Carolina and Georgia in the United States, the Ural Mountains in Russia, and Transvaal in South Africa are the main producing areas.

It is gray-white or light khaki, with high hardness and toughness. It is produced by a special process, and each particle size is produced by natural crystallization, not the result of mechanical crushing. It is a heat-resistant high-grade abrasive material with very good toughness. It is used to make advanced cutting and grinding tools. It is suitable for high-vanadium high-speed steel, austenitic It is suitable for grinding of high hardness and high toughness materials such as stainless steel and titanium alloy, especially for dry grinding and grinding of workpieces that are easily deformed and easily burned.