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Citation: ZHANG Jian-Feng, HU Yue-Hua, QIU Guan-Zhou, WANG Dian-Zuo. 1,2,3-Benzenetrioxylacetic Acid as a Depressant in Flotation Process[J]. Chinese Journal of Applied Chemistry, ;2002, 19(1): 82-84. shu

1,2,3-Benzenetrioxylacetic Acid as a Depressant in Flotation Process

1.
a Department of Mineral Engineering, Central South University, Changsha 410083;
2.
b College of Chemistry and Chemical Engineering, Central South University, Changsha 410083

Corresponding author: ZHANG Jian-Feng,
Received Date: 23 April 2001
Available Online: 1 November 2001
Fund Project: 国家重点基础研究发展规划项目(G1999064901-1) (G1999064901-1)

The flotation process for calcite, diaspore and pyrite using 1,2,3-benzenetrioxylacetic acid(BTAA) as a depressant has been studied. The results showed that, when sodium oleate, dodecylamine and butyl xanthate are used as the collectors, BTAA exhibits a good depressing ability to the three minerals in the order:calcite > diaspore > pyrite. The depressing ability of BTAA was improved by increasing pH value of the medium and BTAA concentration. When the collector concentration was 0.1 mmol/L and the concentration of BTAA was up to 0.7 mmol/L, the recovery of calcite, diaspore and pyrite was 3%, 12% and 21%, respectively. The results were discussed in ferms of the electronegativity of BTAA, specific exponent of flotation agent and HLB value of BTAA molecule.
- benzenetrioxylacetic acid,
- flotation,
- depressant
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