Bauxite grinding technology and apparatus thereof

Abstract

The bauxite grinding process includes the following steps: feeding bauxite ore, lime and evaporation mother liquor into two-bin overflow grinding mill, breaking, coarse grinding, fine grinding, overflow discharging the ground ore slurry and feeding the ore slurry into intermediate slurry groove, then pumping the ore slurry into cyclone separator, sorting, discharging coarse granules slurry out from bottom outlet of cyclone separator and back returning the coarse granules slurry into two-bin overflow grinding mill and further grinding, screening fine granules slurry and feeding the fine granules slurry into finished product groove to make storage.

Description

Technical field: [0001] The invention relates to a process and equipment for grinding bauxite in alumina production. Background technique: [0002] In the process of alumina production, whether Bayer method or sintering method is adopted, the preparation of bauxite slurry is an indispensable process. Among them, the task of the raw material mill in the production of alumina batching process by the Bayer method is to enter the high A / S ore, lime and evaporated mother liquor into the raw material mill according to the specified ratio, and grind it into raw ore pulp with a certain solid content and fineness, which is supplied to Dissolution system. For a long time, for the preparation of Bayer raw ore pulp, the closed-circuit production process of grid mill and spiral classifier is mostly used. With the continuous improvement of alumina production technology, especially the pipeline dissolution technology is more and more used in alumina production, the index requirements for...

AI Technical Summary

Problems solved by technology

The disadvantages of this system are long process, low production capacity and high consumption

Combining the above two processes, there is a common disadvantage: complex process and high consumption

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