Water leaching of SrS and precipitation of SrCO3 using carbon dioxide as the precipitating agent

被引：60

作者：

Owusu, G ^{[1
]}

Litz, JE ^{[1
]}

机构：

[1] Colorado Minerals Res Inst, Golden, CO 80403 USA

来源：

HYDROMETALLURGY | 2000年 / 57卷 / 01期

关键词：

water leaching; SrS; SrCO3;

D O I：

10.1016/S0304-386X(00)00091-8

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Strontium sulphide (SrS) was water-leached at 85 degrees C, generating a saturated solution of approximately 50 g/L Sr. About 92% of the strontium contained in the SrS was leached within 60-80 min. Almost all of the water-soluble strontium were completely leached out from the sulphide material. The strontium-saturated solution was treated with carbon dioxide to precipitate strontium carbonate (SrCO3). Precipitation efficiencies in excess of 99% were attained in both batch and continuous multi-column test programs. Hydrogen sulphide gas was generated as a byproduct in the precipitation process at a slurry pH less than or equal to 8. Particle size analyses of SrCO3 precipitates indicate that a longer retention time enhances crystal growth. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：23 / 29

页数：7

共 6 条

[1]

Dean J. A., 1992, LANGES HDB CHEM, P5

[2] The leaching of SrS with water and the precipitation of SrCO3 from leach solution by different carbonating agents [J].