大江鉱山の開発と操業の合理化

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書誌事項

タイトル別名
  • Development and Rationalization of the Production at Ohe Mine
  • タイコウ コウザン ノ カイハツ ト ソウギョウ ノ ゴウリカ

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抄録

Ohe Mine, situated in the south-western part of Hokkaido, have experienced ups and downs many times since opening.<BR>At that time when our Hokushin Mining Co.succeeded management of the mine, in October 1953, it was very dull state due to ruin of mine, waste of installation and inactive market.<BR>In order to restore and enlarge the mine production, we made untiring effort actively in general measurement and improvement of engineering-such as prospecting, mining and beneficiation.<BR>The principal improvements are given as follows.<BR>1) Precise surveying of geology and are deposits established clear theory that the are deposits were echelon-arrangement-composite vein repeating fissure forming and mineralization contained various sulfide ores and manganese ores.<BR>2) We adopted the following prospecting method to confirm the whole feature of-thn deposits.<BR>At first, prospecting gallery was drifted in the foot-wall, then cross-cut or boring holl were cut toward the hanging wall.<BR>Thus, we could discover large quantity of are reserves during short time, and could find occurence of vein containing many various are minerals.<BR>3) The concentration of stoping faces were performed, and shrinkage method was replaced with sand filllng stoping methgd, then, stoplng efficency was remarkably increased.<BR>4) In the beneficiation, the concentrates of useful minerals such as gold and silver bearing galena, sphaierite, pyrite and rhodochrosite were effectively separated by adoption of sulfide flotation with soap flotation.<BR>Then, the commercial are reserves increased remarkably, and it made able to enlarge the production scale.<BR>5) To improve the quality of manganese concentrates, investigation of roasting method of the concentrates was successfuly carried out.<BR>Since March 1958, roasting and sintering process by use of rotary kiln were operated, and grade of manganese concentrates advanced from 33% to 47% of Mn, then, economical value of the are rised evidently.<BR>As the result, we have accomplished the stabilized production of present scale, 5, 000 tons of crude ore per month.Nowadays, we are planning the production-increase up to 10, 000 tons per month.

収録刊行物

  • 日本鑛業會誌

    日本鑛業會誌 78 (888), 431-446, 1962

    一般社団法人 資源・素材学会

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