Economic Evaluation of the Development System of Cobalt-Rich Manganese Deposit.

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  • PARK Sehun
    Department of Geosystem Engineering, Graduate School of Engineering, The University of Tokyo
  • OKAYA Katsunori
    Department of Geosystem Engineering, Graduate School of Engineering, The University of Tokyo
  • SHIMADA Sohei
    Institute of Environmental Studies, Graduate School of Frontier Sciences, The University of Tokyo

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Other Title
  • コバルトリッチマンガン鉱床開発システムの経済性評価
  • コバルト リッチ マンガン コウショウ カイハツ システム ノ ケイザイセイ ヒョウカ

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Abstract

Cobalt-rich manganese deposit (CRMD) have a significant advantage of developing projects, when they can be separated the metal-bearing crust from the accompanying rocks by introducing the mineral processing. Using the mineral processing experimental data given by the Deep Ocean Minerals Association (DOMA), the authors evaluated the cost of the total system for CRMD development.<BR>We tried to elaborate an economic improvement in considering influences upon the system combination and the apatite / basalt ratio contained in basement rocks. Comparing further the respective economic evaluation, we could obtain the profit and loss curve for a promising CRMD condition.<BR>As a result, an optimized development method was proposed as follows: it was to use robotic miner for mining, gravity concentration for mineral processing and smelting and chlorine leaching process for metallurgical process in the Co : 0.41 %, Ni : 0.35 %, Mn : 14 %, Cu : 0.07 % overgrade basaltic sites.

Journal

  • Shigen-to-Sozai

    Shigen-to-Sozai 117 (2), 95-100, 2001

    The Mining and Materials Processing Institute of Japan

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