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中南大学学报(英文版)

Journal of Central South University

Vol. 25    No. 9    September 2018

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Benzohydroxamic acid to improve iron removal from potash feldspar ores
CAO Zhan-fang(曹占芳)1, 2, QIU Pei(邱培)1, 2, WANG Shuai(王帅)1, 2, ZHONG Hong(钟宏)1, 2

1. Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources,Central South University, Changsha 410083, China;
2. College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China

Abstract:The technological mineralogy of the potash feldspar was investigated and a new collector named Yb105 was adopted to remove iron from potash feldspar ores. The technological mineralogy results indicate that the main components of the ore were feldspar, sericite, quartz and kaolinite, and iron mainly existed in limonite and hematite, most of which can be removed by beneficiation. The results show the benzohydroxamic acid can not only increase the recovery of iron and reduce the consumption of oleic acid collector, but also enhance the collecting performance of oleic acid at low temperature, which can realize the flotation of the ores at a low temperature and play an important role in saving energy to some extent. Compared with oleic oil, the benzohydroxamic acid had a great advantage in removing iron from potash feldspar, a potash feldspar concentrate with Fe grade of 0.23%, K2O grade of 12.59% and Na2O grade of 0.26% was obtained by flotation with Yb105 as collector, and the yield of the concentrate was 82.55%.

 

Key words: potash feldspar; iron removal; reverse flotation; benzohydroxamic acid

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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