Stacking method for red mud

Abstract

The present invention relates to alumina producing technology, and is especially red mud stacking method. During alumina production in coastland, alkali in red mud is neutralized with sea water, neutralized mud slurry is solid-liquid separated, the separated red mud is discharged to storage yard in sea bank to make land, the land is treated for use as dock and harbor freight yard, etc, and the separated liquid is drained to sea. The said method has no environmental pollution, and can save land and provide land making material.

Description

Technical field [0001] The invention relates to a red mud stockpiling method, which belongs to the technical field of alumina production. Background technique [0002] The red mud (residue) produced in the alumina production process is currently stockpiled by finding non-agricultural and forestry land or poor-quality farmland, and building a primary dam with stone or clay to form a reservoir area, and then After laying anti-seepage membrane in the reservoir area, the red mud reservoir will be formed, and then the red mud will be used to continue building the dam on the basis of the primary dam and the red mud will be permanently stockpiled in the reservoir. Due to the large amount of red mud produced in the alumina production process, about one ton of red mud will be produced per ton of product. Therefore, a large amount of red mud stockpile land is required when this storage method is adopted, and a high cost is required. The construction cost of red mud yard. Contents o...

AI Technical Summary

Problems solved by technology

Due to the large amount of red mud produced in the alumina production process, about one ton of red mud will be produced per ton of product. Therefore, a large amount of red mud stockpile land is required when this storage method is adopted, and a high cost is required. Red mud yard construction cost