烧结-溶出法从废催化剂中回收铂  

Recovery of Platinum from Spent Catalysts by Sintering-leaching

作　　者：王明[1] 戴曦[1] 邬建辉[1] 张保钢 吴永谦[1] 陈田庄[1] 

机构地区：[1]中南大学冶金科学与工程学院,长沙410083 [2]上海派特贵金属有限公司,上海200023

出　　处：《贵金属》2011年第4期6-10,15,共6页Precious Metals

摘　　要：采用烧结-溶出法溶解废催化剂中氧化铝基体,使铂富集,进而从不溶渣中回收铂。研究结果表明:废催化剂于600℃焙烧1 h,炭残余量为0.54%,脱炭率达到92.66%;烧渣按配料分子比1.2配料,800℃烧结反应2 h,熟料于95℃热水溶出10 min,一次烧结-溶出,渣率为5.04%,氧化铝溶出率为98.10%,氧化钠溶出率为99.25%,铂富集了17.87倍。The sintering- leaching method was used in order to dissolve the alumina in spent catalysts. Platinum was then recovered from the residues after enriching process. The results showed ： 1 ） the residual carbon was 0.54% with a high decoking rate of 92.66% , after roasting the spent catalysts at 600℃ for 1 h ; 2） the residue rate was 5.04% , the dissolution rate of alumina and sodium oxide were 98.10% and 99.25%, respectively, and the platinum was enriched 17.87 times with the one -step sintering -leaching process ： the cinder was added sodium hydroxide with a molecular proportion of 1.2, then sintered at 800℃ for 2 h, the clinker was leached at 95℃ for 10 min.

关 键 词：冶金技术 烧结-溶出法 回收 废催化剂 铂 

分 类 号：TF833[冶金工程—有色金属冶金]