Method for preparing medium-density, high-strength and multi-purpose zirconium silicate composite micro-bead by using surplus materials

Abstract

The invention relates to the field of preparation of micro-beads, in particular to a method for preparing a medium-density, high-strength and multi-purpose zirconium silicate composite micro-bead by using surplus materials. The formula comprises the raw materials in mass percentage: 48%-88% of zirconium silicate micro-powder surplus material having D50 of smaller than 7 microns discarded in the process of preparing zirconium silicate polishing micro-powder, 9%-49% of aluminum sesquioxide micro-powder surplus material having D50 of smaller than 7 microns discarded in the process of preparing aluminum sesquioxide polishing micro-powder and 3% of lignin. The method comprises the preparation steps of proportioning materials, drily mixing the materials, wetly mixing the materials, ageing the mixture, tightly compacting the mixture, crushing the mixture, screening the mixture, pelletizing the mixture, tightly molding the pelletized balls, selecting balls, drying the balls, screening the balls, sintering the balls, carefully selecting the sintered balls, polishing the balls, cleaning the balls and drying the balls. The prepared micro-bead has a particle size of 63-600 microns and a density of 3.8-4.0 g/cm3 and a sphericity of more than 95%. According to the method for preparing the medium-density, high-strength and multi-purpose zirconium silicate composite micro-bead by using the surplus materials, the industrial residual materials are utilized, the cost is low, the product application is wide, the process is simple, and the method is an innovation in the preparation method of the zirconium silicate composite microbead.

Description

technical field [0001] The invention relates to the field of preparation of microbeads, in particular to a method for preparing medium-density, high-strength, multipurpose zirconium silicate composite microbeads by using surplus materials. technical background [0002] The rapid development of the ultrafine powder processing industry has driven the development and production of grinding media. The development of high-quality grinding media with high quality and high grinding efficiency will make positive contributions to the powder processing industry and create huge economic benefits. Grinding beads are an important grinding medium, which can be widely used in the grinding and processing of raw materials in industries such as cement, minerals, ceramics, electronic materials, magnetic materials, coatings, paints, etc. It is a high-quality grinding medium. With the application and development of ultrafine powder in various industries, the fineness, particle shape and quality...

AI Technical Summary

Problems solved by technology

[0008] In summary, there are the following problems in the preparation of zirconium silicate ball media by sintering method in the prior art: ① The industrial waste left over from the industrial production of zirconium silicate or aluminum oxide polishing micropowder is not effectively utilized, and the production cost is high; ② The prepared zirconium silicate beads have a small application range, and most of them can only be used as grinding media, with low cost performance; ③The particle size of the product is large, and it is difficult to grind microbeads smaller than 0.5mm; ④It needs to be formed by "isostatic pressing" or "Spray granulation" process, the process is complex; ⑤The finished microbeads have low density and poor sphericity; ⑥There are pollution problems such as acid and alkali in the preparation process

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