The energy consumption figures of tungsten extractive metallurgy are discussed. The tungsten powderis produced from wolframite and / or scheelite. The energy consumption in mining, beneficiation, digestion,blue oxide ...The energy consumption figures of tungsten extractive metallurgy are discussed. The tungsten powderis produced from wolframite and / or scheelite. The energy consumption in mining, beneficiation, digestion,blue oxide production and reduction is calculated respectively. The accuracy of calculation is within a rangeof ±15%.展开更多
A special property of methylammonium tungstate, self-reductibility, was studied. Research shows that the tungstate has the characteristics of self-reductibility when it is heated to a certain temperature at which it a...A special property of methylammonium tungstate, self-reductibility, was studied. Research shows that the tungstate has the characteristics of self-reductibility when it is heated to a certain temperature at which it automatically decomposes and reduces to lower valency tungsten oxides or even metallic tungsten in N2. The higher the temperature, the stronger the self-reductibility. A higher temperature is necessary to form metallic tungsten. New processes for the production of pure oxides WO2.72, WO2 and metallic tungsten W were developed on the basis of this research.展开更多
文摘The energy consumption figures of tungsten extractive metallurgy are discussed. The tungsten powderis produced from wolframite and / or scheelite. The energy consumption in mining, beneficiation, digestion,blue oxide production and reduction is calculated respectively. The accuracy of calculation is within a rangeof ±15%.
文摘A special property of methylammonium tungstate, self-reductibility, was studied. Research shows that the tungstate has the characteristics of self-reductibility when it is heated to a certain temperature at which it automatically decomposes and reduces to lower valency tungsten oxides or even metallic tungsten in N2. The higher the temperature, the stronger the self-reductibility. A higher temperature is necessary to form metallic tungsten. New processes for the production of pure oxides WO2.72, WO2 and metallic tungsten W were developed on the basis of this research.
