鉄鋼スラグリサイクリングの技術発展と課題

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タイトル別名
  • Improvement and Issues of Recycling Technology of Ironmaking and Steelmaking Slag
  • テッコウ スラグリサイクリング ノ ギジュツ ハッテン ト カダイ

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Metallurgical slags are inevitably produced during the present smelting and refining processes as by-products. A lot of ironmaking and steelmaking slags are produced as a by-product of steel production because of the huge amount of its production, and thus the development of effective utilization methods has been the crucial issue in steelmaking industry. Ironmaking and steelmaking slags have been mainly used as a resource for various civil engineering works as a substitute material of natural stone or sand due to its physical and chemical properties so far. However, the growth of the potential demand of ironmaking and steelmaking slags cannot be expected in the future because of the maturation of domestic economic activities and the competition with by-products from various other industries. Therefore, further technical advancement must be conducted from the viewpoints of the decrease of slag generation by improving smelting and refining processes and utilizing the refining ability of slags more efficiently, and the development of new utilization methods. In the present paper, the current situation of ironmaking and steelmaking slags is reviewed and the recent progress of the researches related to slag is described, namely the improvement of the processes by utilizing heterogeneous slag such as solid-liquid or two liquid phases, so called “multi phase flux” as a refining agent, and the development of the utilization of steelmaking slag at coastal area as a rehabilitation material of sea desertification problem. Furthermore, effective methods of slag utilization are summarized and discussed.

収録刊行物

  • 資源と素材

    資源と素材 129 (5), 185-191, 2013

    一般社団法人 資源・素材学会

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