| 发明名称 |
METHOD AND APPARATUS FOR RECOVERING COPPER AS PRECIPITATE FROM ETCHING WASTE LIQUID CONTAINING COPPER CHLORIDE |
| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for efficiently treating an etching waste liquid containing copper chloride to recover sludge with a low occurring amount of sludge. SOLUTION: In this method for treating the etching waste liquid containing copper chloride as a liquid to be treated for recovering copper as a precipitate, the liquid to be treated is mixed with an alkaline liquid having >=9 pH to form a mixed liquid having pH 6 to 11, and an oxidizing agent is added to precipitate the dissolved copper ions as copper to be recovered. |
| 申请公布号 |
JP2002255550(A) |
申请公布日期 |
2002.09.11 |
| 申请号 |
JP20010055770 |
申请日期 |
2001.02.28 |
| 申请人 |
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL & TECHNOLOGY;TATSUMI KENJI;WADA SHINJI;MITSUBISHI CORP |
发明人 |
TATSUMI KENJI;WADA SHINJI;YUGAWA YASUHIRO |
| 分类号 |
C02F1/52;C01G3/00;C02F1/72;C02F11/12;C23F1/00;C23F1/08;C23F1/34;H05K3/06;(IPC1-7):C01G3/00 |
主分类号 |
C02F1/52 |
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