Preparation method of aluminum oxide microbeads

作者: Wang Jinhuai , Wang Qi , Ma Xiaobing , Liu Feifei , Wang Ruisheng

DOI:

关键词: Particle sizeAbrasion (mechanical)Composite materialRotary kilnSinteringGrindingPelletizingOxideBall millMaterials science

摘要: The invention discloses a preparation method of aluminum oxide microbeads. comprises the following steps: by adopting powder with lower alpha phase conversion rate (80-90%) as main raw material, adding composite sintering additive, ball-milling through an intermittent ball mill and vertical sand mill, then performing centrifugal type spray pelletization, rolling to forming, drying, in rotary kiln, continuous grinding polishing, obtain According method, relatively low is adopted, activity remaining gamma-aluminum promotes oxide, addition amount additive decreased, meanwhile problem that microbeads during kiln are caked collided be deformed due excessive glass can solved. Rotary equipment introduced, under moving status evenly heated sintering, thus being uniform structure performances. prepared have characteristics abrasion, high strength density, particle size, free from breakage beads, like.

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