Solution Chemistry Study of Salt-type Mineral Flotation Systems: Role of Inorganic Dispersants
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- 作者：Hu Yuehua ; Ruan Chi ; and Zhenghe Xu
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2003
- 出版时间：April 16, 2003
- 年：2003
- 卷：42
- 期：8
- 页码：1641 - 1647
- 全文大小：110K
- 年卷期：v.42,no.8(April 16, 2003)
- ISSN：1520-5045
文摘
Interactions of salt-type minerals with common inorganic flotation depressants were investigatedthrough solution chemistry calculations. From the constructed conditional solubility productlimits and the actual solubility product lines of calcium silicate and phosphate in fluorite, calcite,and apatite single-mineral systems, the critical precipitation pH or concentration of silicate andphosphate in the corresponding mineral suspensions was determined. These values provided afundamental basis for interpreting the results of flotation tests and were in line with the resultsof 
-potential and dispersant adsorption measurements. The surface precipitation of calciumsilicate or phosphate on fluorite and calcite was identified as a major depression mechanism.Selective depressing conditions for different salt-type minerals using Na2SiO3 and Na3PO4 asdepressants were determined on the basis of solution chemistry calculations of the systems.
-potential and dispersant adsorption measurements. The surface precipitation of calciumsilicate or phosphate on fluorite and calcite was identified as a major depression mechanism.Selective depressing conditions for different salt-type minerals using Na2SiO3 and Na3PO4 asdepressants were determined on the basis of solution chemistry calculations of the systems.