Production of Tungsten by Pulse Current Reduction of CaWO4

被引：0

作者：

Ozdemir, Furkan ^{[1
]}

Erdogan, Metehan ^{[2
]}

Elmadagli, Mustafa ^{[3
]}

Karakaya, Ishak ^{[1
]}

机构：

[1] Middle East Tech Univ, Dept Met & Mat Engn, Univ Mah Dumlupinar Blv 1, TR-06800 Ankara, Turkey

[2] Yildirim Beyazit Univ, Dept Mat Engn, Cankiri Caddesi Cicek Sokak 3, TR-06050 Ulus Altindag Ankara, Turkey

[3] Roketsan, Kemalpsa Mahallesi Sehit Yuzbasu Adem Kutlu Sokak, TR-06780 Ankara, Turkey

来源：

RARE METAL TECHNOLOGY 2016 | 2016年

关键词：

Electrodeoxidation; Tungsten; Scheelite; CaWO4; Pulse Current;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Tungsten is mainly produced by H-2 reduction of WO3 which makes its production difficult and costly. A promising method was recently reported for direct electrochemical production of tungsten from CaWO4 (scheelite) which is estimated as the seventy percent of the all tungsten reserves of the world. This paper investigates the application of pulse current in the electrochemical reduction of CaWO4 pellets attached to a current collector. The electrolyte was composed of calcium chloride and sodium chloride salts at eutectic composition (48 pct mol NaCl at 873 K). The reduced samples were cleaned with dilute hydrochloric acid solutions and characterized by X-ray diffraction and scanning electron microscopy. Examination of the results revealed that metallic tungsten was obtained by pulse current reduction.

引用

页码：151 / 158

页数：8

共 13 条

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