Leaching Behavior of Lithium-Bearing Bauxite with High-Temperature Bayer Digestion Process in K2O-Al2O3-H2O System

Author:

Han DongzhanORCID,Peng Zhihong,Song Erwei,Shen LeitingORCID

Abstract

Lithium is one of the secondary mineral elements occurring in bauxite. The behavior of lithium-bearing bauxite in the digestion process was investigated, and the effect of digestion conditions on the extraction rates of lithium was studied. The results demonstrate that the mass ratio of the added CaO to bauxite, the KOH concentration, and the digestion temperature had a significant effect on the lithium extraction efficiency. An L9(34) orthogonal experiment demonstrated that the order of each factor for lithium extraction from primary to secondary is lime dosage, caustic concentration, and reaction temperature. Under the optimal conditions (t = 60 min, T = 260 °C, ρ(K2O) = 280 g/L, and 16% lime dosage), the leaching efficiencies of lithium and alumina are 85.6% and 80.09%, respectively, with about 15% of lithium entering into red mud. The findings of this study maybe useful for controlling lithium content in alumina products and lithium recovery from the Bayer process.

Publisher

MDPI AG

Subject

General Materials Science,Metals and Alloys

Reference27 articles.

1. Enrichment mechanism of lithium in Bayer process of alumina production;Cao;Nonferrous Met. (Extr. Metall.),2017

2. The existing state of lithium in the process of alumina production;Li;Light Met.,2005

3. Discovery and preliminary study of the high tungsten and lithium contents in the Dazhuyuan bauxite deposit, Guizhou, China

4. Effect of high lithium electrolyte on aluminum electrolysis production and improvement measures;Qing-Tao;Nonferrous Met. (Extr. Metall.),2018

5. Equilibrium concentration of lithium ion in sodium aluminate solution

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