ロックビット用超硬合金の塩化による回収

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タイトル別名
  • Chlorination as a Method of Recovering Hard Metal Tips for Rook Drill
  • ロックビットヨウ チョウコウゴウキン ノ エンカ ニ ヨル カイシュウ

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Some fundamental researches and their industrial applications were done on the chlorination process to recover W and Co from WC-Cosintered hard metals.<BR>Carbon in WC-Co alloys (Co10%) exists about 5.6% wt. and can be used as an available heat source by the addition of O2 gas. This fact brought the economical chlorination furnace without external heating to success.<BR>Chlorination of WC-Co alloys should be done under the temperature of 850-1, 000°C, under the gasflows of Cl2 and O2 necessary to convert WC-Co to WO2Cl2, CO2 and CoCl2. Reaction velocity was about 3g/cm2. hr at our 40mmφ testing furnace.<BR>Industrial tests were done at temperature of 850-1, 000°C, Cl2 and O2 gas flow of each 50l/mininour 300mmφ400mm ht (charging space) testing furnace. About 1 ton alloys were charged, 642kg alloys (corresponding 963kg as chlorides) were reacted for 60hrs and 923kg chlorides were caught. Meanchlorination velocity of WC-Co alloys at our pilot plant was 11.7kg/hr, while our expecting value was 15kg/hr.

収録刊行物

  • 日本鑛業會誌

    日本鑛業會誌 79 (905), 950-954, 1963

    一般社団法人 資源・素材学会

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