中文摘要：

钨作为不可再生的国家战略性重要资源,在国民经济各部门及国防工业中使用范围及消耗量正逐年增加。综合分析现行制备金属钨粉的方法和技术工艺的改进及存在的问题,在开发短流程,提高资源利用率,降低生产成本已成为冶金技术发展的趋势大背景下,提出采用合适的电解质体系,由钨酸盐为活性物一步直接由熔盐电解法制备金属钨粉的方法以达到大幅缩减现有的工艺流程、降低钨冶金成本的目的。主要从理论分析和国内外现有的实践探索的结果出发,从熔盐体系的选择,电极及电解外部工艺条件等主要技术环节入手分析采用熔盐电解法的优势及面临的主要问题,并对其发展前景做了展望,认为选择合适的熔盐体系制备金属钨粉在理论和实践上是可行的,通过系统的实验对温度、电解电压、电极参数及电解时间等主要工艺参数加以优化,通过合理的电化学研究方法对电解体系基本性质及电极过程的深入研究,克服主要技术难点,将有望研究出一种环境相对友好和钨资源利用率较高的生产金属钨粉的方法。

英文摘要：

Tungsten was an important and non-renewable strategic resource.Currently,tungsten was employed in many fields and the consumption was increasing year by year,because of its good physical and chemical properties.The existing metallurgical processes were complex,expensive,energy intensive,and probably pollutional.With this background,the methods was proposed for the direct preparation of tungsten powder via electrochemical reduction of solid tungstate from an adapted melts in order to develop a simple,low-cost process.The advantages and problems of molten salt electrolysis were analyzed from melts system,electrolysis cell and techniques.Based on Theoretical analysis and existing research results,molten salt electrolysis was considered a desired low-cost and environmentally sound process to prepare tungsten powders,but the technical difficulties included electrolysis temperature,cell-voltage,electrode,and electrolysis time and electrode process.