Flocculation and flotation behavior of a low-grade alunite ore

被引：0
|
作者：
J. E. Gebhardt
L. Piga
G. Schena
机构：
[1] Process Engineering Resources Inc.,Mineral Processing Institute
[2] CNR,Division of Georesources and Environment
[3] University of Trieste,undefined
[4] D.I.N.M.A,undefined
来源：
Mining, Metallurgy & Exploration | 1998年 / 15卷
关键词：
Selective flocculation; Flotation; Alunite; Aluminum;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The possibility of beneficiating a low-grade alunite ore from the Tuscany region of Italy was examined. Flocculation and flotation techniques were investigated to separate alunite and kaolinite from the ore, which also contained feldspar and quartz. Flotation was performed at pH 6.5 with oleic acid as collector and sodium silicate as dispersant. A concentrate containing 12% alunite with a recovery of about 65% and a concentrate containing 28% alunite with a recovery of 84% were achieved from the −38-μm feed samples containing 5.0% and 12.9% alunite, respectively. Poor recovery of alunite was achieved by flocculation methods.
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页码：48 / 52
页数：4
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