経済性評価モデルを用いたコバルト・リッチ・クラストの分離成績評価

DOI Web Site 参考文献27件
  • 朴 洗憲
    東京大学大学院　工学系研究科　地球システム工学専攻
  • 山崎 哲生
    産業技術総合研究所　海洋資源環境研究部門　海底系資源 · 環境研究グループ
  • 島田 荘平
    東京大学大学院　新領域創成科学研究科　環境学専攻

書誌事項

タイトル別名
  • An Evaluation of Mineral Processing on Cobalt-Rich Manganese Crusts by Applying an Economic Examination Model
  • ケイザイセイ ヒョウカ モデル オ モチイタ コバルト リッチ クラスト ノ ブンリ セイセキ ヒョウカ

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抄録

In cobalt-rich manganese crusts, valuable metals such as cobalt, nickel and copper are mainly contained as amorphous phases in the manganese oxides or iron oxyhydroxides without forming definite mineral phases. The mined ores, however, are expected to be likely accompanied with the substrate rock, e.g. basalt and limestone, because usually the cobalt-rich manganese crusts are found as pavement-like thin layers on seamounts. Thereby, mineral processing can be thought to be effective for separation of the metal-bearing crusts from the accompanied substrates.<BR>On the basis of mineral processing experimental data acquired by the Deep Ocean Minerals Association (DOMA), the data qualification and re-evaluation by applying an economic evaluation model are presented in this paper. Using the data from gravity concentration, magnetic separation and froth flotation, their separation performances are estimated by Newton efficiency and technical efficiency methods. The relationships between the separation efficiencies and the internal rate of return calculated from the economic evaluation model are compared with the variation of some parameters.<BR>As the results, it is shown that technical efficiency can be used effectively for the evaluation of mineral processing in some cases. Evaluating by Newton efficiency turns out to be an effective criterion in case of more than 66% substrate ratio in the mined ore, and the technical efficiency less than 52% substrate ratio. The applicability of the two efficiencies in 52 to 66% substrate ratio is case by case.

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  • 資源と素材

    資源と素材 120 (4/5), 202-208, 2004

    一般社団法人 資源・素材学会

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