摘要
研究了硫酸加压溶解法从氧化铝基含铂废催化剂中回收铂。在高压釜中,反应温度130℃,压力4.5 kg/cm2,时间4 h,氧化铝载体的溶解效率较好;添加Ti Cl3溶液可将分散到溶液中的铂浓度降低至0.0005 g/L以下;富集物经溶解-精炼得到纯度大于99.98%的海绵铂,铂直收率为98.71%。
A method of sulfuric acid pressure dissolution to recover platinum from the waste alumina-based catalysts was studied. The selective dissolution was carried out in the autoclave for 4 h at a temperature of 130℃and under pressure of 4.5 kg/cm2, producing a desired result. Platinum dissolved in the solution could be reduced to a concentration of less than 0.0005 g/L by adding TiCl3 as a reductant. Sponge platinum with a purity of 99.98%was obtained from insoluble substance after the melting-refining process, and the direct recovery of platinum was up to 98.71%.
出处
《贵金属》
CAS
CSCD
北大核心
2016年第2期37-40,45,共5页
Precious Metals
基金
云南省省院省校科技合作项目(2013IB020)
关键词
有色金属冶金
废催化剂
加压
硫酸
铂
回收
nonferrous metallurgy
spent catalyst
pressure
sulfuric acid
platinum
recovery
