水銀界面におけるザンセートの反応の熱力学的研究

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タイトル別名
  • Thermodynamical Study on the Reaction between Mercury and Xanthate
  • スイギン カイメン ニ オケル ザンセート ノ ハンノウ ノ ネツリキガクテキ ケンキュウ

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抄録

To investigate the mechanism of the reaction between mineral surface and xanthate in flotation, the reactions between mercury and xauthate were thermodynamically studied with measuring the potential of the following cells: Hg|Hg2X2|X-||Hg2++||Hg.(The abbreviation ‘X’ is used for xanthate.)<BR>The standard potential, the free energy, the solubility product, and the reaction heat of the mercury xanthate were determined. Xanthates used in the experiments were ethyl xanthate, iso-propyl xanthate, and amyl xanthate.<BR>The results obtained are as follows:-(1) The standard potentials of the cells, Hg|Hg2X2|X-||Hg2++|Hg, are 1.066 volt for ethyl xanthate, 1.078 volt for iso-propyl xanthate, and 1.109 volt for amyl xanthate.<BR>(2) The change of free energies for formation of mercury xanthate are -4.91×104cal for ethyl xanthate, -4.97×104cal for iso-propyl xanthate, and -5.11×104cal for amyl xanthate.<BR>(3) The solubility products of mercury xanthate are 1×10-36for ethyl xanthate, 4×10-37for iso-propyl xanthate, and 4×10-38for amyl xanthate.<BR>(4) The reaction heats of the formation of mercury xanthate are -5.46×104cal for ethyl xanthate, -5.53×104cal for iso-propyl xanthate, and -5.68×104cal for amyl xanthate.<BR>(5) The stable formation of metal was xanthate was considered on mercury surface contacting a dilute aqueous sloution of xanthate by comparing the potential of the cell, Hg|Hg2X2|X-||Hg2++|Hg, with that of the cell, Hg|X-||Hg2++|Hg.

収録刊行物

  • 日本鑛業會誌

    日本鑛業會誌 79 (895), 12-17, 1963

    一般社団法人 資源・素材学会

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