Abstract
Preparation conditions of tungsten powder by the decomposition of the scheelite concentrate in the medium of NaCl–Na 2 CO 3 , NaCl– Na 2 CO 3 –NaF, and NaCl–Na 2 CO 3 –Na 3 AlF 6 salt melts and reduction of formed sodium tungstate with aluminum at 1123–1273 K are investigated. It is established that the powder yield is ~93 wt.%, the of tungsten is 97 %. Granulometric characteristics of powders are determined. It is shown that the specific surface of powders reaches 14,6·10 5 m –1 .
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Schedule a callMore From: Izvestiya Vuzov. Tsvetnaya Metallurgiya (Proceedings of Higher Schools. Nonferrous Metallurgy)
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