【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。更多还原

【Abstract】 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.更多还原