Improvement of the Precious Metals Process at Takehara Refinery

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Other Title
  • 非鉄金属製錬プロセスと操業　　竹原製煉所における貴金属製錬
  • 竹原製煉所における貴金属製錬
  • タケハラ セイレンショ ニ オケル キキンゾク セイレン

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Description

In the precious metals processing line, raw slimes including metals and silver are first decopperized and deselenized, and then converted to noble lead in the melting and settling furnace. Thereafter, it is turned into a crude silver anode by cupellation with the residual lead from the lead refining process. This crude silver is refined by electrolysis to produce electrolytic silver. Electrolytic gold is produced from the crude gold obtained from the sediments of silver electrolysis and part of it is used to produce high purity gold for electronic industry. Aside from these metals, selenium, tellurium, platinum and palladium are recovered.<BR>Recently, We have some improvement in these processes.

Journal

  • Journal of MMIJ

    Journal of MMIJ 123 (12), 672-674, 2007

    The Mining and Materials Processing Institute of Japan

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