硬锌真空蒸馏富集锗、铟的研究

A Study on Riching Ge,In by Vacuum Distillating Hard-Zinc

锗、铟常赋存于铅，锌矿中。硬锌是火法冶炼铅锌过程中的副产物，其主要成分是铅、锌，常含锗、铟等。为综合回收其中的有价金属，用真空炉蒸馏出锌和锌铅合金，使锗、铟富集蒸馏残渣中，即得到锗（铟）精矿。硬锌真空蒸馏，在真空度６６～１０６Ｐａ，温度１０００℃，恒温蒸馏４０～１００ｍｉｎ，锗在残渣中的富集比为１０．６３～１５２０倍，直收率９７２６％～９４．０９％，铟的富集比大于９．５倍，直收率大于９０％；电能消耗为１４９０～２０００ｋＷｈ／ｔ硬锌。

Ge,Inalways associates with lead-Zinc ore. Hard-zinc is the by-products in thepyromentallurgy process of lesd-zinc.Its other elememts.Ge and In richs in residue by vacuum furnancedistillating to separate zinc and zinc-lend alloy. so as to obtain Ge and In concentrated ore.The rich ration of Ge in the distillated residue is 10.63-15.26 times、direct recovery ration is97.26 94.09%,at the condition of lead-zinc distillating:vacuum degree 66-106Pa,temperature 1000℃,constant temperature time is 40 106Pa. The rich raatio of In is more than 9.5 times,direct recovery ratio ismore than 90%power consumption is 1500 2000 kwh/thrd zine.