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Chelating modifiers in the cationic silica flotation of magnetic taconite concentrates

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Abstract

Two aromatic-type chelating agents, 1, 10 phenanthroline (phen) and 8-quinolinol (quin), were tested as specific depressants for magnetite in the cationic silica flotation of magnetic taconite concentrates. Micro and batch flotation tests, along with zeta potential and adsorption measurements, were used. In the presence of a cationic collector, dodecylammonium chloride (DAC), the Fe/phen surface chelate electrostatically repelled DAC, and the magnetite was depressed. The negatively charged Fe(quin)2(OH)2− on the magnetite surface attracted the cationic collector and made magnetite floatable.

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Authors and Affiliations

  1. University of Minnesota, Minerals Resources Research Center, Minneapolis, MN, USA

    H. Dho (member SME)

  2. Chongju University, Department of Mineral and Mining Engineering, Naedukdong, Chongju, Korea

    H. Dho (member SME)

  3. Central Research Institute, Mitsubishi Materials Corp., Omiya, Japan

    I. Iwasaki (member SME)

Authors
  1. H. Dho
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  2. I. Iwasaki
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Additional information

SME preprint 95-28, SME Annual Meeting, March 6–9, 1995, Denver, CO. M&MP paper 95–624. Discussion of this peer-reviewed and approved paper is invited and must be submitted, in duplicate, prior to Aug. 31, 1996.

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Dho, H., Iwasaki, I. Chelating modifiers in the cationic silica flotation of magnetic taconite concentrates. Mining, Metallurgy & Exploration 13, 65–68 (1996). https://doi.org/10.1007/BF03402721

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