Magnetic-attraction heavy-throwing type ball mill for preparing zirconium oxide powder and lining thereof

Abstract

The invention discloses a magnetic-attraction heavy-throwing type ball mill for preparing zirconium oxide powder and a lining thereof. The magnetic-attraction heavy-throwing type ball mill comprises a plurality of groups of lining plates, and the lining plates are spliced to form a cylindrical lining body; fixing rings used for keeping the combination state of the lining plates are arranged on the periphery of the formed lining body at equal intervals in the circumferential direction; and the cross section of each lining plate is of an arch structure with the middle protruding, so that the inner wall of a lining body formed by the lining plates forms a wavy surface, the formed ball mill adopts suction force generated by a magnet to increase the falling speed of a grinding ball, and therefore the ball mill has higher acceleration, larger impact force is generated to reduce the ball milling time, and the granularity of discharged material powder is balanced; and secondly, the magnet is arranged in the lining plate, and the magnet is arranged outside the ball mill to form magnetic constraint on the magnet in the lining plate, so that the magnet is always positioned at the bottommost part of the ball mill, and the horizontal projectile motion of the grinding ball cannot be influenced.

Description

technical field [0001] The invention relates to the field of zirconia grinding equipment, and more specifically, relates to a magnetic suction heavy-drop ball mill and an inner lining thereof for preparing zirconia powder. Background technique [0002] Zirconia is mainly used in high-strength structural ceramics. Many applications are based on the characteristics of high strength, high toughness, low thermal conductivity and high melting point of the material, such as refractory bricks, ceramic turning tools, grinding-free ceramic tools, grinding balls , Ceramic valves, molds, ceramic teeth, 5G mobile phone backplanes, etc.; therefore, zirconia is the cornerstone of modern ceramic technology buildings. [0003] In the production and use of high-end zirconia ceramics, the development of rare earth stabilized zirconia nano-powder coloring technology is very important, which is related to the quality of products and the realization of product functions. [0004] In the prepara...

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Problems solved by technology

[0004] In the preparation process of zirconia ceramics, it includes ingredients, sanding (coloring also occurs in this link), granulation, high-temperature solid-phase synthesis, molding, high-temperature firing to the final product; one of the more important steps is the preparation Zirconia powder. The industrial preparation of zirconia powder is usually crushed by ball mill. Although the current ball mill technology has simple process, low manufacturing cost and good batch stability, the prepared powder has large particle size and wide particle size distribution range. Poor sintering activity; and accompanied by a wide range of powder particle size distribution, resulting in uneven dyeing of the final powder, uneven color of the final product, poor continuous color adjustability, and ultimately unqualified target products

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