Hardmetals intended to perform in harsh operating conditions are developed with the use of metallic powders, in particular, tungsten powders. The growing consumption of tungsten in industry necessitates the improvement of techniques employed to produce it from industrial waste. The objective of this research effort was to reduce metallic tungsten (as a powder) from chloride and chloride–fluoride melts and determine the factors influencing its particle size. The starting material was tungsten oxide (WO 3 ) produced electrochemically from processed raw material (VK-6 tungsten carbide pseudoalloy). The melts were KCl–NaCl–CsBr and NaCl–KCl–CsBr–Na 3 WO 3 F 3 eutectic mixtures. When the melt with a high WO 2 F 4 2− content was subjected to electrolysis, tungsten precipitated as a superfine powder. The precipitate morphology showed that the tungsten particle size was dependent on electrolysis conditions. A relatively inexpensive and effective method of producing tungsten powders was developed upon the research.

中文翻译：

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钨硬质合金废料电化学生产钨粉

旨在在恶劣操作条件下运行的硬质合金是通过使用金属粉末，特别是钨粉末而开发的。工业中钨的消耗量不断增加，因此需要改进从工业废物中生产钨的技术。这项研究工作的目的是从氯化物和氯化物 - 氟化物熔体中减少金属钨（作为粉末），并确定影响其粒度的因素。起始材料是由加工过的原材料（VK-6 碳化钨假合金）电化学生产的氧化钨（WO 3 ）。熔体为 KCl-NaCl-CsBr 和 NaCl-KCl-CsBr-Na 3 WO 3 F 3 共晶混合物。当具有高WO 2 F 4 2- 含量的熔体进行电解时，钨以超细粉末的形式沉淀。沉淀物形态表明钨粒度取决于电解条件。在研究的基础上开发了一种相对便宜且有效的生产钨粉的方法。