B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
149/14, 403/2, 5
B01J 39/20 (2006.01) B01J 45/00 (2006.01) C01G 3/00 (2006.01) C22C 3/00 (2006.01) C23F 1/46 (2006.01)
Patent
CA 1269491
RECOVERY OF AMMONIACAL COPPER WITH NOVEL ORGANOGELS ABSTRACT There is disclosed novel copper ion-exchange media and processes for the recovery of cupric ion from ammoniacal copper solutions and for the recovery of spent printed circuit board etchant. The novel ion- exchange media comprise hydrophobic nonporous polymer plasticized and swollen with a monomeric organic liquid copper ion-exchange agent such as beta-diketones or hydroxyoximes. A novel copper ion-complexing agent, 1-n-octylphenyl-p-1,3-butanedione, is also disclosed. The processes essentially comprise contacting the ammoniacal cupric ion-containing solution or spent etchant with the novel copper ion-exchange media to extract copper in cupric ion form. Copper can be recovered therefrom by conventional methods such as acid stripping and electrowinning.
471530
Babcock Walter C.
Baker Richard W.
Brooke James W.
Tuttle Mark E.
Babcock Walter C.
Baker Richard W.
Bend Research Inc.
Brooke James W.
Oyen Wiggs Green & Mutala Llp
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