发明名称 |
METHOD FOR ELECTROLYTIC PRODUCTION OF ULTRA-PURE ZINC OR ZINC COMPOUNDS FROM ZINC PRIMARY AND SECONDARY RAW MATERIALS |
摘要 |
The process comprises the following stages: a) leaching; b) solid-liquid separation; c) neutralization of the aqueous solution; d) solid-liquid separation of the zinc-rich solution; e) zinc extraction; f) purification of the organic solvent from the extraction stage; g) stripping the ionic zinc loaded in the organic solvent; h) recovering the zinc contained in the aqueous acid solution from the stripping. The following barriers to impurities have been established: gentle leaching; alkaline pulp treatment; treatment of a small stream of aqueous solution, collected before and/or after the zinc extraction at step e); high selectivity of the dissolved zinc extraction; treatment of the zinc loaded in the organic solvent; cleaning treatment of the zinc-laden organic solvent, with an ultra-pure acid solution; partial bleeding and treatment of the stripped organic solvent; bleed of small stream of the final product producing loop, which will be recycled to the organic loop. |
申请公布号 |
PL202742(B1) |
申请公布日期 |
2009.07.31 |
申请号 |
PL20010363610 |
申请日期 |
2001.02.16 |
申请人 |
TECNICAS REUNIDAS, S.A. |
发明人 |
MARTIN SAN LORENZO DANIEL;DIAZ NOGUEIRA GUSTAVO;GARCIA LEON MIGUEL ANGEL |
分类号 |
C25C1/16;C22B3/38;C22B19/20 |
主分类号 |
C25C1/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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