Alumina ceramic grinding ball is a non-metallic grinding medium widely used in industrial grinding. It has many physical and chemical advantages that are different from metal grinding balls. Today, I will introduce its characteristics and applications.
A brief introduction to the application of alumina ceramic grinding balls
Alumina ceramic grinding balls are made of high-purity alumina powder through static pressing, etc., and sintered at high temperature. The density of 92 alumina ball is about 3.6, the Mohs hardness is 9, the water absorption rate is close to 0, and the self-abrasion is 0.01%.
It is precisely because of the above characteristics that alumina ceramic grinding balls are widely used in fine grinding in various industries. The following is a list of:
1. Glass grinding, first of all, the hardness of glass is very high, and the processing ability of ordinary grinding media is limited. The mixing of too many impurities will greatly reduce the quality of the glass, resulting in the poor quality of the finished glass, and it is impossible to make high-quality products. The alumina grinding ball can solve this problem very well.
2. Quartz grinding, the hardness of the same quartz is also very high, especially high white quartz has high requirements for whiteness, and the color of alumina happens to be white, which solves the grinding problem of high white quartz from many aspects.
3. Cement grinding is a very popular industry in recent years. Alumina ceramic grinding balls have extremely low wear, thermal conductivity and low density characteristics. The effect of improving product quality is obvious, but it has its disadvantage that the texture is brittle and hard and easy to break, so the transformation of this industry requires a professional technical team.
4. Lithium battery grinding is an emerging sunrise industry. Alumina ceramic grinding balls rely on their own materials to show their magical powers. We know that lithium battery materials are very sensitive to iron, so metal grinding cannot be used in them. Instead of metal grinding media, alumina is the most efficient for grinding ceramic balls, so it becomes the grinding material that is not allowed to be used.
Unique advantages of alumina ceramic grinding balls
1. The ingredients are mainly high-quality alumina, with high whiteness, which does not affect the quality of grinding materials. And the hardness is high. Its Rockwell hardness is HRA80-90, second only to diamond, and surpasses wear-resistant steel.
2. The use of isostatic pressing and rolling molding has a large specific gravity, which greatly improves the grinding efficiency, reduces the grinding time, and effectively increases the effective volume of the ball mill, thereby increasing the amount of grinding materials added.
3. Good wear resistance, its wear resistance is 266 times that of manganese steel, and the wear is low. Compared with steel grinding media, it can greatly extend the service life of the grinding body by more than 10 times.
4. It can withstand more than 1,000 degrees of high temperature, and has the characteristics of acid resistance, alkali resistance and corrosion resistance.
5. Grinding medium has the advantages of large volume density, regular shape, easy classification, high grinding efficiency and favorable price.
