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Factors that should be paid attention to in the process of alumina grinding ball roasting

Factors that should be paid attention to in the process of alumina grinding ball roasting

(Summary description)During the roasting process of alumina ball, if the control is not good enough, the alumina grinding ball may be deformed, cracked, broken, etc.

Factors that should be paid attention to in the process of alumina grinding ball roasting

(Summary description)During the roasting process of alumina ball, if the control is not good enough, the alumina grinding ball may be deformed, cracked, broken, etc.

Information

  During the roasting process of alumina ball, if the control is not good enough, the alumina grinding ball may be deformed, cracked, broken, etc. The specific reasons for the formation will be analyzed according to the actual situation.

  The deformation of the alumina grinding ball during the roasting process may be caused by the too wide particle size distribution and the too large particle size. It may also be caused by the unreasonable choice of additives and the amount of additives in the alumina powder.

  The main reason for the cracking of the ball is the internal defect of the roasted alumina grinding ball, which is also related to the shrinkage of the ball. The reason for the inconsistency with the shrinkage of the ball is the analysis of the reason for the calcination deformation shown. When the shrinkage is not uniform, if there is a defect, the defect becomes the source of fracture, and the crack propagation causes the sphere to crack.

  When the grain grows abnormally, a large number of pores in the super-large particles are difficult to remove the grain boundary, which makes it difficult for ceramic materials to achieve a higher density and deteriorate many characteristics of the material, especially the mechanical properties (fracture toughness, bending strength, etc.).

  The ball density of alumina grinding ball molding is uneven (powder agglomeration, semi-finished product pressure gradient, additive unevenness), and there is uneven density during calcination

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