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中南大学学报(英文版)

Journal of Central South University

Vol. 23    No. 3    March 2016

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Effect and mechanism of dolomite with different size fractions onhematite flotation using sodium oleate as collector
LUO Xi-mei(罗溪梅)1, YIN Wan-zhong(印万忠)2, WANG Yun-fan(王云帆)3, SUN Chuan-yao(孙传尧)4, MA Ying-qiang(马英强)2, LIU Jian(刘建)1

1. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization (Faculty of Land and
Rescource Engineering, Kunming University of Science and Technology), Kunming 650093, China;
2. College of Zijin Mining, Fuzhou University, Fuzhou 350116, China;
3. Faculty of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China;
4. Beijing General Research Institute of Mining & Metallurgy, Beijing 100044, China

Abstract:The effect of dolomite with different particle size fractions on hematite flotation was studied using sodium oleate as collector at pH of about 9. The effect mechanism of dolomite on hematite flotation was investigated by means of solution chemistry, ultraviolet spectrophotometry (UV), inductively coupled plasma atomic emission spectrometry (ICP-AES) and X-ray photoelectron spectroscopy (XPS). It is observed that dolomite with different size fractions has depressing effect on hematite flotation using sodium oleate as collector, and dolomite could be the “mineral depressant” of hematite using sodium oleate as collector. The reasons for that are concerned with sodium oleate consumption and the adsorption onto hematite of dissolved species of dolomite.

 

Key words: dolomite; hematite; sodium oleate; mineral dissolution; depressing effect

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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