发明名称 |
METHOD AND DEVICE FOR TREATING IODINE-CONTAINING ETCHING SOLUTION WHICH CONTAINS AU AU |
摘要 |
The purpose of the present invention is to establish a technique which enables the collection of Au from a used iodine-containing etching solution with a high collection rate and also enables the restoring of the concentration of iodine (I3 -) in the etching solution to recover the etching ability of the etching solution. A method for treating a iodine-containing etching solution that contains Au, which comprises electrolyzing the etching solution to collect Au from the etching solution and restore the concentration of iodine (I3 -), wherein the electrolysis is carried out while keeping the cathode potential at -0.7 V or more (wherein the reference potential is a potential of a reference electrode Ag/AgCl) and the anode potential at +1.0 V or less (wherein the reference potential is a potential of a reference electrode Ag/AgCl). |
申请公布号 |
HK1213303(A1) |
申请公布日期 |
2016.06.30 |
申请号 |
HK20160101230 |
申请日期 |
2016.02.03 |
申请人 |
ASAHIPRETEC CORPORATION |
发明人 |
FURUKATA, Chie;KOKUBO, Hironobu |
分类号 |
C23F;C25C |
主分类号 |
C23F |
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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