窒素中におけるWO<SUB>3</SUB>粉末の炭素還元について

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タイトル別名
  • On the Carbothermic Reduction of WO<SUB>3</SUB> Powder in Nitrogen Atmosphere
  • チッソチュウ ニ オケル WO3 フンマツ ノ タンソ カンゲン ニ ツイテ

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The reaction of the carbon reduction of WO3 in a nitrogen atmosphere was studied fundamentally.<BR>The results obtained are as follows:<BR>1) Sublimination of WO3 was observed at high temperatures over 1200°C and its decomposition occurred simultaneously when the atmosphere had a low oxygen potential.<BR>2) The carbon reduction of WO3 is proceeded by the thermal decomposition of WO3 as well as the reaction with carbon at the starting stage of reaction.<BR>3) It was noted in small samples that the carbon reduction was induced after WO3 had been changed to W18O49 of needle-like crystal between 800°C and 1000°C.<BR>4) On an industrial scale, the reaction is more complex due to the effect of the great quantity of product gas and heat supply. For this purpose, a new type of furnace is needed.

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