含砷锑复杂铜镍合金真空蒸馏法综合回收Cu、Ni、Ag的研究

来源 :中国真空学会2014年年会 | 被引量 : 0次 | 上传用户:billhe123
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  以含砷锑复杂铜镍合金为原料,从理论上分析了采用真空蒸馏法综合回收该类物料中有价金属Cu,Ni 和Ag 的可行性,并通过实验探讨了蒸馏温度、保温时间、元素As,Sb 对Cu,Ni,Ag 分离和富集效果的影响.实验结果表明:在蒸馏温度1473K,保温时间120min,系统残压10~30Pa 条件下,残余物中Cu 含量升至8.83%,直收率为88%左右;残余物中Ni 含量升至25.61%,直收率为91%;残余物中Ag 的含量降至1.93%左右,而Ag 在挥发物中的含量为4.4%左右,表明Cu,Ni,Ag 的分离和富集效果显著.X 射线衍射分析表明残留物中形成化合物Cu3As,Ag3Sb,导致As,Sb 不能彻底挥发.挥发物中的Ag 可以继续采用真空蒸馏法富集Ag,而富含Cu,Ni 的残留物可以通过湿法浸出工艺进行收集.
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