Alumina grinding balls refer to materials such as bauxite, roller powder, industrial alumina powder, and high-temperature calcined Alpha alumina powder as raw materials, after batching, grinding, powdering (pulping, mud making), forming, and drying , Sintering and other processes, mainly used as a grinding medium and widely used ball stone. According to different alumina content, it can be divided into medium aluminum ball, medium high aluminum ball and high aluminum ball.
Generally, we classify 60%-65% alumina content as medium aluminum balls, 75%-80% alumina content as medium-high aluminum balls, and over 90% alumina content as high-aluminum balls. Among them, the high-alumina balls are subdivided into 90 aluminum ball, 92 aluminum ball, 95 aluminum ball and 99 aluminum ball. Due to its extremely high production cost, few large-scale manufacturers manufacture 99 aluminum balls in large quantities. At present, it is mainly made by hand by some special ceramic factories.
Medium aluminum balls and medium-high aluminum balls are accepted by most ceramic factories due to their lower prices, and are mainly used for grinding ceramic blanks. High-alumina balls are widely used in different types of ceramics, enamels, glass, and chemicals due to their excellent characteristics such as high strength, high hardness, high wear resistance, large specific volume, small size, high temperature resistance, corrosion resistance, and pollution-free. For the finishing and deep processing of thick and hard materials in factories, among them, high-aluminum balls with 92 content are most commonly used.
92 aluminum balls has the following advantages
①The high alumina grinding ball has low wear and can greatly extend the service life of the grinding body. The hardness of the corundum grinding media is large, and the Mohs hardness level is above 8. ② Alumina balls have high strength and impact resistance. Its compressive strength is more than 1500MPa, which can be widely used in vibration grinding equipment with high impact force and low wear. ③High alumina grinding ball can withstand high temperature of more than one thousand degrees, acid, alkali and corrosion resistance. It can be used in petroleum and chemical industries. ④The high alumina grinding ball adopts rolling and isostatic pressing forming, which has a large specificity, which can greatly improve the grinding efficiency, reduce the grinding time, and effectively increase the effective volume of the ball mill, thereby increasing the amount of grinding material added.
92 aluminum balls’ use:
Alumina grinding ceramic balls are widely used in different types of ceramics, architectural and sanitary ceramics, industrial ceramics, electronic ceramics, enamel, glass, etc. due to their high alumina content, high density, high hardness and high wear resistance. Refractory materials, special cement, deep processing of non-metallic minerals, mechanical polishing, major oil refineries, fertilizer plants, petrochemical plants, urea plants, nitrogen fertilizer plants, dye plants, pharmaceuticals, coatings and other industries are used as grinding media.
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