摘要：微粉的分级是机械法微粉制备中一项关键技术，也是一个难题。本文以特陶领域中的重要原料α－Al₂O₃的超细分级为对象，借鉴碟式离心机的薄层分离原理，通过模型实验和工业性初步实验，研究了碟式离心机应用于分级微粉的特性。结果表明，碟式离心机可用来分级微颗粒。

关键词： 碟式离心机；湿法分级；微粉

Abstract:The ulftrafine classifiction is a key technique and a dif filcuit.problem to be solved. In this paper， to solve the classification of a-Al₂O₃， according to the prineiple of thin-layer separation of discseparator，through the model and industrial test， the characterstics of ultrafine  classification with this kind of equipmenut was investigated. The resultsshowed thatthis principle can be the ultrafine classification.

Keywords: Wet classification, Micro-powder.