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Structure–activity relationship and mechanisms of reagents used in scheelite flotation

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Abstract

Effects of carboxylic acid collector, benzohydroxamic acid (BHA), sodium hexametaphosphate (SHAP), sodium silicate, and oxalic acid on scheelite flotation were studied through flotation tests, quantum chemical calculation, and flotation solution computational chemistry. In terms of the calculation results, the relationship between chemical reactions occurring on the scheelite surface and molecular structures of the reagents were analyzed. The results show that BHA and carboxylic acid collectors interact with scheelite in different forms and the recovery of scheelite using sodium oleate as collector declines successively from SHAP, sodium silicate, to oxalic acid. Moreover, it is found that the performance of depressant in scheelite flotation is directly related to the group electronegativity, indicating that the latter is a dominant factor that determines the former. These findings will be helpful to the academic research communities of scheelite flotation.

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Acknowledgments

This study was financially supported by the National Natural Science Foundation of China (No. 51074037).

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Authors and Affiliations

  1. School of Resource and Civil Engineering, Northeastern University, Shenyang, 110819, China

    Wan-Zhong Yin & Ji-Zhen Wang

  2. Design & Research Institute of Zijin, Longyan, 364000, China

    Zhong-Mei Sun

Authors
  1. Wan-Zhong Yin
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  2. Ji-Zhen Wang
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  3. Zhong-Mei Sun
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Correspondence to Ji-Zhen Wang.

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Yin, WZ., Wang, JZ. & Sun, ZM. Structure–activity relationship and mechanisms of reagents used in scheelite flotation. Rare Met. 34, 882–887 (2015). https://doi.org/10.1007/s12598-014-0381-5

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  • DOI: https://doi.org/10.1007/s12598-014-0381-5

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