2001, Volume 3, Issue 12
Strategic Study of CAE >> 2001, Volume 3, Issue 12
Study on Germanium Extraction From Zinc Sulfate Leached Solution
1. INET Tsinghua University, Beijing 100084, China
2. Kunming Maetallurgy Research Institute, Kunming 650031, China
3. Huize Lead-Zinc Mine, Huize, Yunnan 654200, China
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Abstract
This process is concerned with solvent extraction of Ge from zinc sulfate solution with 7815 (hy-droxamic acid as) extractant, sulfonated kerosene as diluent, T reagent as additive and NaOH as re-extract ant. The feed liquid is the leachate of Yunnan Huize lead-zinc ore leached at high temperature by strong sulphuric acid and ferric solution. The temperature is about 70～80℃ . The concentration of sulphuric acid and ferric inos are 90 g/L and 10〜15 g/L respectively. Selection of extraction system, metal exaction balance, process parameters, process design and the overall process experiment have been investigated. The Ge extraction is higher than 96% , are re-extraction is higher than 97% , Ge conlent in the germanium concentrate, which is ohtained by nentralization is higher than 30% .
Keywords
extraction ; germanium ; 7815 ; T-reagent
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