发明名称 |
Method to prevent the exhaustion of acid copper plating baths and to recover metallic copper from solutions and sludges containing copper in an ionic form. |
摘要 |
<p>Method to prevent the exhaustion of acid copper plating baths (12) and to treat sewage or sludges (20) containing copper in an ionic form so as to recover metallic copper (39), the method including the addition (11) of a compound which keeps the concentration of iron below a critical value (for instance, 60 grs/lt.), the compound causing precipitation of iron in the form of ferrous sulphate and thus preventing the co-deposition of crystals of ferrous sulphate and copper sulphate with a possible incorporation of organic impurities such as stearates (35) present in the acid cooper plating baths (12). <IMAGE></p> |
申请公布号 |
GR3025210(T3) |
申请公布日期 |
1998.02.27 |
申请号 |
GR19970402847T |
申请日期 |
1997.10.29 |
申请人 |
LABORATORI TABOGA DI TABOGA LEANDRO |
发明人 |
TABOGA, LEANDRO |
分类号 |
C25D3/38;C25D21/18;(IPC1-7):C23C18/38;C01G3/10 |
主分类号 |
C25D3/38 |
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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