- 专利标题： A METHOD OF PROCESSING AN ETCHING WASTE MEDIUM FROM CIRCUIT BOARD AND/OR SUBSTRATE MANUFACTURE
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申请号： EP21160272.7申请日： 2021-03-02
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公开(公告)号： EP3875643A2公开(公告)日： 2021-09-08
- 发明人: Kern, Konstantin , Zanker, Andreas , Moitzi, Heinz , Redl, Alois , Gross, Friedrich , Klocek, Jolanta , Schrei, Martin , Ebinger, Christoph
- 申请人： AT & S Austria Technologie & Systemtechnik Aktiengesellschaft
- 申请人地址： AT 8700 Leoben-Hinterberg Fabriksgasse 13
- 代理机构： Dilg, Haeusler, Schindelmann Patentanwaltsgesellschaft mbH
- 优先权： EP20172928 20200505
- 主分类号： C25D21/18
- IPC分类号： C25D21/18 ; C25D21/22 ; C25C3/00 ; C25D21/14 ; C25D21/20 ; C23F1/46 ; C25D3/38
摘要：
It is described a method of processing an etching waste medium from circuit board and/or substrate manufacture, the method comprising:
i) providing a medium to be processed (11), being the etching waste medium, in particular from an etching process (150), wherein the medium to be processed (11) comprises a metal salt to be processed and an acid (15);
ii) processing the medium to be processed (11) in an ion exchange process (145), so that the metal salt to be processed is exchanged by a metal salt, and a metal salt containing medium (10) is obtained from the medium to be processed (11); hereby
a) streaming a first process cycle (170) through the ion exchange process (145), wherein the first process cycle (170) is a first closed loop that yields substantially only elementary metal (50); and
b) streaming a second process cycle (180) through the ion exchange process (140), wherein the second process cycle (180) is a second closed loop that yields substantially only purified water (188) and/or a metal-depleted salt concentrate (186b).
i) providing a medium to be processed (11), being the etching waste medium, in particular from an etching process (150), wherein the medium to be processed (11) comprises a metal salt to be processed and an acid (15);
ii) processing the medium to be processed (11) in an ion exchange process (145), so that the metal salt to be processed is exchanged by a metal salt, and a metal salt containing medium (10) is obtained from the medium to be processed (11); hereby
a) streaming a first process cycle (170) through the ion exchange process (145), wherein the first process cycle (170) is a first closed loop that yields substantially only elementary metal (50); and
b) streaming a second process cycle (180) through the ion exchange process (140), wherein the second process cycle (180) is a second closed loop that yields substantially only purified water (188) and/or a metal-depleted salt concentrate (186b).
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