Sorting and settling device for preparing alumina powder

The utility model discloses a sorting and settling device for preparing alumina powder. The sorting and settling device comprises a feeding pipe, a grading chamber, a settling chamber, a circulating fan and a circulating pipeline, an unloader is arranged in the feeding pipe; a dispersing mechanism is further arranged above the unloader; and the dispersing mechanism is used for vibrating and dispersing the aluminum oxide powder. The utility model has the beneficial effect that the problem that the separation continuity is influenced due to the fact that aluminum oxide powder is easy to agglomerate and is easy to agglomerate and block when entering the grading chamber through the feeding pipe is solved. 本实用新型公开了一种氧化铝粉体制备用分选沉降装置，包括有进料管、分级室、沉降室、循环风机和循环管道；所述进料管内设置有卸料器；所述卸料器上方还设置有分散机构；所述分散机构用于振动分散氧化铝粉体。本实用新型的有益效果是：解决由于氧化铝粉体容易团聚，在通过进料管进入分级室内时容易发生团聚堵塞导致影响分选的连续性问题。