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.
出处
《贵金属》
CAS
CSCD
北大核心
2011年第4期6-10,15,共6页
Precious Metals
关键词
冶金技术
烧结-溶出法
回收
废催化剂
铂
metallurgy
sintering - leaching
recovery
spent catalyst
platinum
