发明名称 |
VERFAHREN ZUR RÜCKGEWINNUNG VON ZINN, ZINNLEGIERUNGEN ODER BLEILEGIERUNGEN AUS LEITERPLATTEN |
摘要 |
A method for selective dissolution of tin and/or lead- or tin-containing alloys from printed circuit boards is provided comprising contacting a printed circuit board with a solution comprising Ti(IV) and an acid which forms stable and soluble salt of Ti(III), Ti(IV), Sn(II) and Pb(II), under conditions to effect dissolution of substantially all of the Sn and/or Pb- or Sn-containing alloy therefrom, as Sn(II) and/or Pb(II) and recovering from the solution by electrolytic reduction substantially all of the Sn(II) and/or PB(II) species as Sn and/or Pb. After the electrolytic reduction step, the oxidant metal species is regenerated by oxidation and recycled to the first stage of the process. |
申请公布号 |
DE60002838(T2) |
申请公布日期 |
2004.02.19 |
申请号 |
DE2000602838T |
申请日期 |
2000.01.18 |
申请人 |
ALPHA FRY LTD., LONDON;CAPENHURST. TECH LTD., CAPENHURST;CAMBRIDGE UNIVERSITY TECHNICAL SERVICES LTD., CAMBRIDGE |
发明人 |
GOODMAN, PAUL DAVID;HOLT, LYN;DALRYMPLE, IAN MCCRADY;FRAY, DEREK JOHN;GIBSON, ROBERT WILLIAM |
分类号 |
C25C1/14;C22B25/06;C23F1/44;C23F1/46;C25C1/12;C25C1/18;C25C1/24;H05K3/06;H05K3/22 |
主分类号 |
C25C1/14 |
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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