熔鉱炉による硫酸製造を伴う銅精鉱の直接製錬について

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タイトル別名
  • Smelting of Copper Concentrates by Blast Furnace, accompanied with Sulphuric Acid Production
  • ヨウコウロ ニ ヨル リュウサン セイゾウ オ トモナウ ドウセイコウ ノ チョクセツ セイレン ニ ツイテ

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With the recent progress in the ore-dressing techniques, grade of copper in concentrates has been remarkably improved.<BR>As a device to operate blast-furnace for treatment of such high grade copper concentrates, Shisakajima Smelter of Sumitomo Metal Mining Co., Ltd. adopted a newly-developed smelting process in Dec. 1954, what we call “Direct Smelting” using “Sideflue” type blast furnace equipped with a specially designed feeding hopper.<BR>In this process, concentrates, after blended to a uniform viscosity, is charged directly into blast furnace to make effective use of combustion heat of sulphur and iron contained in concentrates and at the same time all of the Cu-smelting exhaust gas is led directly to sulphuric acid plant for H2SO4 production.<BR>The major technical and economical merits of this smelting process are summarized as follows:<BR>(1) Fine concentrates can be directly treated without going through complicated preparatory treatments.<BR>(2) Copper can be extracted more economically.<BR>(3) Sulphur contained in concentrates can not only be efficiently utilized but be recovered in the form of H2SO4 at a high yield.<BR>(4) Fuel consumption can be cut down by means of pyritic smelting of concentrates.<BR>(5) Operation process can be simplified so that the amount of labor and power be saved.<BR>(6) SO2 can be recovered from Cu-Smelting exhaust gas economically and with out any waste.

収録刊行物

  • 日本鑛業會誌

    日本鑛業會誌 75 (852), 362-374, 1959

    一般社団法人 資源・素材学会

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