Composite type high strength wear resistant ceramic ball and preparation method thereof

Abstract

The invention relates to a composite type high strength wear resistant ceramic ball and a preparation method thereof. The composite type high strength wear resistant ceramic ball comprises natural mineral raw materials and industrial chemical raw materials of, by weight, 88-92% of bauxite and 8-12% of Al2O3 micro powders, the preparation method includes subjecting the bauxite and the micro powders to material washing, ball-milling, aging, spray drying, forming, preheating and sintering to obtain the ceramic ball, Al2O3 contents of the ceramic ball are 75-85%, specific gravity of the ceramic ball is 3.2g / cm<3>, abrasion of the ceramic ball is smaller than or equal to 0.07g / kg.h, and Moh's hardness of the ceramic ball is 8-9 grades. The prepared ceramic ball is small in abrasion, high in strength, low in price, stable in quality, high in the specific gravity, high in whiteness and wide in application prospects in industries of architectural ceramics, specially manufactured ceramics, fire resistant materials, chemical engineering, non-metallic mines and the like.

Description

technical field [0001] The invention belongs to the technical field of grinding media, and in particular relates to a composite high-strength wear-resistant ceramic ball and a preparation method thereof. Background technique [0002] Because of its high strength, high hardness, wear resistance and corrosion resistance, ceramic balls are widely used as grinding media in ceramics, electronics, building materials, new materials and other fields. Ceramic balls in the prior art are usually made by isostatic pressing, for example: "Materials Herald" in October 2000, the 14th volume album, Jia Guangyao, Zhang Weiru, etc. "Development of Low-Cost Zirconia Grinding Balls" discloses a The preparation method of grinding media is to prepare ultra-fine powder by wet ball milling and spray granulation, and then adopt cold isostatic pressing under the pressure of 0.1-0.16GPa to form, and finally prepare zirconia grinding balls through high-temperature firing, which has the following disadv...

AI Technical Summary

Problems solved by technology

Ceramic balls in the prior art are usually made by isostatic pressing, for example: "Materials Herald" in October 2000, the 14th volume album, Jia Guangyao, Zhang Weiru, etc. "Development of Low-Cost Zirconia Grinding Balls" discloses a The preparation method of grinding media is to prepare ultra-fine powder by wet ball milling and spray granulation, and then adopt cold isostatic pressing under the pressure of 0.1-0.16GPa to form, and finally prepare zirconia grinding balls through high-temperature firing, which has the following disadvantages : 1) The equipment required by this method has a large one-time investment; 2) When this method prepares ceramic balls of different sizes, different molds need to be replaced, and the preparation process is complicated