摘要
为了对废旧金刚石工具中的有价金属进行回收,通过查阅热力学数据,绘制了金刚石工具中常见的5种有价金属(镍、铁、铜、钴、锡)的电位-pH图,并对其进行分析,通过分析可知,采用盐酸和硝酸的混合酸可将这5种元素进行浸出,并通过实验进行验证。结果表明,在金刚石工具重量为21.44 g(铜:35%,铁:20%,镍:15%,钴:15%,锡:15%),总酸量(体积比盐酸∶硝酸=3∶2)为140 ml,浸出体系使用恒温水浴96℃,搅拌速度为500 r.min-1,当反应进行到80 min时,各种金属的浸出率达到了99%左右,实现高效浸出。
In order to retrieve the valuable metals in waste diamond tools,potential-pH diagrams of five common valuable metals(nickel,iron,copper,cobalt,tin) in diamond tools were drawn by means of consulting thermodynamic data and analyzed.By analysis,these five elements could be leached by adopting mixed acid composed of hydrochloric acid and nitric acid,which was verified by experiments.The results showed that the leaching rates of various metals were about 99% when the condition was the weight of the diamond tool...
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2010年第6期919-923,共5页
Chinese Journal of Rare Metals
基金
北京市新世纪百千万人才工程资助项目
