Dry cleaning and screening method and equipment system for bauxite

Abstract

The invention provides a dry cleaning and screening method and equipment system for bauxite, belonging to the technical field of a mining and mineral separation process. The method comprises the following steps: drying the bauxite into dry ore, breaking and separating the dry ore into ore and muddy silt, screening and separating the ore and the muddy silt to remove the muddy silt, and thus obtaining net bauxite. The structure of the dry cleaning and screening equipment system for the bauxite is as follows: an ore hopper is connected with a bauxite feeding opening of a drying roller through a conveying belt, and a discharging opening of the drying roller is connected with a feeding opening of an ore-mud separator; a coarse ore discharging opening of the ore-mud separator is connected with a crusher, and a discharging opening of the crusher is connected to the feeding opening of the ore-mud separator through a conveying belt. The method can realize the separation of ore and mud without water washing, so that the water resource is not wasted, sewage is not generated, and facilities for sewage treatment and tailings maintenance and preservation are not needed. The mud after ore washing can be completely recycled.

Description

【Technical field】 [0001] The invention relates to the technical field of mining mineral processing technology, in particular to a method and equipment system for dry cleaning and screening of bauxite. 【Background technique】 [0002] Accumulative bauxite is the main source of aluminum production in South China. Its typical feature is high mud content, accounting for about 60% of the original ore. During production and processing, about 60% of the clay in the raw ore must be removed by means of ore washing to obtain clean aluminum concentrate. At present, the process of water washing and crushing is generally used for the treatment of accumulation type bauxite, which consumes a lot of water resources in the production process, and the tailings produced need to be stored in special storage, which not only causes necessary water and soil erosion, but also has major risks. Security risks. The produced pure aluminum ore often affects subsequent processing and smelting due to exc...

AI Technical Summary

Problems solved by technology

The invention can greatly reduce the cost of ore washing, has comprehensive advantages such as low cost and no pollution to the environment, and can change the thorny problems of the current aluminum ore screening and washing methods such as high cost, serious waste of water resources, and difficult to deal with tailings polluted environment. Transformative Impact on Aluminum Ore Screening and Washing Industry

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