Alumina balls are also called high-alumina balls, filled ball lights. 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, high specific gravity, small size, high temperature resistance, corrosion resistance, and non-polluting. And so on the thick and hard material finishing and deep processing of the factory.
Take the high aluminum ball with 92% content as an example, its specific gravity (density) should be more than 3.60, alumina content should be more than 91.5%, and low iron content. The same raw material, the same formula, and the same firing temperature, the smaller the fineness of the powder after the raw material is ground, the higher the specific gravity and the better the wear resistance. The specific gravity of high-alumina balls is mainly affected by powder and firing. Burning raw (not cooked), over-coarse powder, adding miscellaneous materials and other factors will lead to insufficient proportion of ball. Balls with a low specific gravity are not wear-resistant and easy to crack, but a high specific gravity does not mean that the ball must be wear-resistant, because over-sintered balls can also reach a higher specific gravity.
The most important quality manifestation of ball stone is wear resistance. Some testing institutions can also do abrasion test. These test reports can show the quality of ball stone, but the data is for reference only, because the environmental conditions of laboratory testing and production The environment is very different. The first test is water milling, while many manufacturers use dry grinding. Secondly, the test is often done without adding other materials, just the friction between the balls and the balls, and the actual production process It is necessary to add various raw materials.
In the actual use process, if you want to detect the wear of the balls, you must make more records. After the initial proportioning, by recording the number of balls added, combined with the output, calculate the wear of the balls in the production, and compare the high aluminum The cost comparison of the ball and other grinding balls can also compare the quality of the balls between various manufacturers. In addition to the hardness and fineness of the material, the grinding method (such as dry grinding and wet grinding is different), the speed of the ball mill, whether the ratio of the ball is reasonable, the viscosity of the material, etc., affect the wear of the ball factor.
