High-silica bauxites leaching process efficiency improvement
Pavlodar Alumina Plant, a part of Aluminium of Kazakhstan JSC (ERG), specializes on alumina production. Capacity of the existing production is ~ 1.5 million tons per year, production technology employed - Bayer sintering, silica modul (A-S) of the processed bauxites - ~ 3.7. Current recovery level on the Bayer side is ~ 73%, therefore we are looking for an efficient (both from a technical and economic perspectives) way to increase the recovery of the Bayer (incl. elimination of the sintering branch) and reduce the cost of production.
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