酸浸法从钨渣中回收铌、钽、钨  

Recovery of Nb,Ta,W from Tungsten Residue by Acid Leaching

作　　者：戴艳阳[1] 钟晖[1] 钟海云[1] 

机构地区：[1]中南大学冶金科学与工程学院,长沙410083

出　　处：《桂林工学院学报》2008年第2期193-195,共3页Journal of Guilin University of Technology

摘　　要：研究了钨渣的酸浸法优化处理工艺,在40℃条件下,分别用HCl和H2SO4处理50 g钨渣10m in：15%HCl溶液中Ta2O5、Nb2O5与WO3的回收率分别为86.1%、75.3%和73.9%,Ta、Nb、W分别富集了8～10倍;而在30%H2SO4中的回收率分别为95.2%、68.5%和79.8%,Ta、Nb、W仅富集了4倍左右。这是由于Ta、Nb盐类在HCl、H2SO4中的溶解度有差异,导致了Ta、Nb不同的回收率。The investigation of optimizied technique for acid leaching of tungsten residue reveals that when 50 g tungsten residue is leached at 40 ℃ for about 10 min,the recovery rates of Ta2O5,Nb2O5 and WO3 are 86.1%,75.3% and 73.9% respectively in 15% HCl leaching agent,but 95.2%,68.5% and 79.8% respectively in 30% H2SO4 leaching agent.Ta,Nb,W are enriched 8～10 times in the former condition and only 4 times in the latter condition.Owing to the difference between the solubility of niobate and tantalate in H2SO4 and HCl solution,recovery rates of Ta,Nb are different.

关 键 词：钨渣 综合回收 钽 铌 酸浸法 

分 类 号：TF841.6[冶金工程—有色金属冶金]