Effect and mechanism of siderite on reverse flotation of hematite
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- 作者：Wan-zhong Yin ; Dong Li ; Xi-mei Luo ; Jin Yao…
- 关键词：hematite ; siderite ; reverse flotation ; solution chemistry
- 刊名：International Journal of Minerals, Metallurgy, and Materials
- 出版年：2016
- 出版时间：April 2016
- 年：2016
- 卷：23
- 期：4
- 页码：373-379
- 全文大小：665 KB
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Dong Li (1)
Xi-mei Luo (3)
Jin Yao (1)
Qian-yu Sun (1)
1. College of Resources and Civil Engineering, Northeastern University, Shenyang, 110819, China
2. College of Zijin Mining, Fuzhou University, Fuzhou, 350116, China
3. Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, 650093, China - 刊物类别：Chemistry and Materials Science
- 刊物主题：Materials Science
Metallic Materials
Mineral Resources - 出版者：Journal Publishing Center of University of Science and Technology Beijing, in co-publication with Sp
- ISSN：1869-103X
文摘
The effects of siderite on reverse flotation of hematite were investigated using micro flotation, adsorption tests, and Fourier transform infrared spectroscopy. The flotation results show that interactions between siderite and quartz are the main reasons that siderite significantly influences the floatability. The interactions are attributed to dissolved siderite species and fine siderite particles. The interaction due to the dissolved species is, however, dominant. Derjaguin-Landau-Verwey-Overbeek (DLVO) theoretical calculations reveal that adhesion on quartz increases when the siderite particle size decreases and that fine particles partly influence quartz floatability. Chemical solution calculations indicate that the dissolved species of siderite might convert the surface of active quartz to CaCO3 precipitates that can be depressed by starch. The theoretical calculations are in good agreement with the results of adsorption tests and FTIR spectroscopy and explain the reasons why siderite significantly influences reverse flotation of hematite.