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Effect and mechanism of siderite on reverse anionic flotation of quartz from hematite

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Abstract

Reverse flotation technology is one of the most efficient ways to improve the quality and reduce impurity of iron concentrate. Mineral processors dealing with hematite face a challenge that the flotation results of reverse flotation of hematite are poor in presence of siderite using fatty acid as collector, starch as depressant of iron minerals and calcium ion as activator of quartz at strong alkaline pH. In this work, the effect of siderite on reverse anionic flotation of quartz from hematite was investigated. The effect mechanism of siderite on reverse flotation of hematite was studied by solution chemistry, ultraviolet spectrophotometry (UV) and Fourier transform infrared spectroscopy (FTIR). It was observed that siderite had strong depressive effect on quartz in flotation using sodium oleate as collector, corn starch as depressant of iron minerals and calcium chloride as activator of quartz at strong alkaline pH. The starch was adsorbed onto calcium carbonate by chemical reaction which was formed by CO3 2- from siderite dissolution and Ca2+ from calcium chloride as activator of quartz and precipitated on the surface of quartz, which resulted in improving the hydrophilic ability of quartz.

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Authors and Affiliations

  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

    Xi-mei Luo  (罗溪梅) & Jian Liu  (刘建)

  2. College of Zijin Mining, Fuzhou University, Fuzhou, 350116, China

    Wan-zhong Yin  (印万忠) & Ying-qiang Ma  (马英强)

  3. Faculty of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China

    Yun-fan Wang  (王云帆)

  4. Beijing General Research Institute of Mining & Metallurgy, Beijing, 100044, China

    Chuan-yao Sun  (孙传尧)

Authors
  1. Xi-mei Luo  (罗溪梅)
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  2. Wan-zhong Yin  (印万忠)
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  3. Yun-fan Wang  (王云帆)
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  4. Chuan-yao Sun  (孙传尧)
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  5. Ying-qiang Ma  (马英强)
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  6. Jian Liu  (刘建)
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Corresponding author

Correspondence to Wan-zhong Yin  (印万忠).

Additional information

Foundation item: Project (51374079) supported by the National Natural Science Foundation of China

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Luo, Xm., Yin, Wz., Wang, Yf. et al. Effect and mechanism of siderite on reverse anionic flotation of quartz from hematite. J. Cent. South Univ. 23, 52–58 (2016). https://doi.org/10.1007/s11771-016-3048-6

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  • DOI: https://doi.org/10.1007/s11771-016-3048-6

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