航空材料用高纯五氧化二钒工艺技术研究

Study on technology for preparation of high-purity vanadium pentoxide for aviation materials

针对低品位钒渣生产高纯五氧化二钒工艺的生产流程,从提高钒回收率、降低生产资源及能源消耗、提高多钒酸铵品位、提高五氧化二钒品位、降低产品杂质等多方面进行了系统性研究,使钒渣转换率达到86%以上,多钒酸铵品位达到89.5%以上,五氧化二钒品位达到99%以上,各项杂质含量和高密度金属夹杂物控制等达到高端客户美国大型跨国集团肯纳、雷丁钛合金企业的要求。

Based on the process for production of high purity vanadium pentoxide from low grade vanadium slag, a systematic research was carried out for improving the vanadium recovery rate, the grade of ammonium polyvanadate and vanadium pentoxide, and decreasing the material and energy consumption as well as the product impurities simultaneously. The conversion rate more than 86% for the vanadium slag, the grade more than 89.5% and 99% respectively for ammonium polyvanadate and vanadium pentoxide can be obtained finally. The content of impurities and high density metal inclusions in products can meet the requirements of the customers such as Kennametal and Reading titanium alloy companies.