Ion exchange and regeneration process for separation and removal

Details Ion exchange and regeneration process for separation and removal Ion exchange and regeneration process for separation and removal

1998-02-06

1999-09-07

Nessler, Cynthia L.

Liquid purification or separation

Processes

Ion exchange or selective sorption

210688, 210670, 423531, 204DIG13, C02F 142

Patent

active

059482648

ABSTRACT:
An ion exchange separation, recovery and regeneration process for the control of iron is disclosed that can replace the conventional bleed stream process used in copper electrowinning. The disclosed process minimizes the loss of cobalt from the electrowinning circuit and can effect a lowering of the total iron concentration in the electrolyte circuit with an associated increase in current efficiency. The process captures the iron as iron(III) on an ion exchange medium containing a plurality of --CH(PO.sub.3 R.sub.2).sub.2 or --C(PO.sub.3 R.sub.2).sub.2 -- groups through which the divalvent metal ions pass. The iron(III) is then reduced with copper(I) to form iron(II) that is freed from the exchange medium, thereby permitting regeneration of the medium.

REFERENCES:
patent: 3224873 (1965-12-01), Swanson
patent: 3440036 (1969-04-01), Spinney
patent: 3761249 (1973-09-01), Ritcey et al.
patent: 4083758 (1978-04-01), Hamby et al.
patent: 4100043 (1978-07-01), Chou et al.
patent: 4167481 (1979-09-01), Cremers et al.
patent: 4272492 (1981-06-01), Jensen
patent: 4329210 (1982-05-01), Merchant et al.
patent: 4350667 (1982-09-01), Andersson et al.
patent: 4559216 (1985-12-01), Nagai et al.
patent: 4900522 (1990-02-01), Chou et al.
patent: 5108615 (1992-04-01), Hosea et al.
patent: 5112392 (1992-05-01), Anderson et al.
patent: 5192418 (1993-03-01), Hughes et al.
patent: 5281631 (1994-01-01), Horwitz et al.
patent: 5449462 (1995-09-01), Horwitz et al.
patent: 5451323 (1995-09-01), Akao et al.
patent: 5500126 (1996-03-01), Fries
patent: 5520814 (1996-05-01), Celi
patent: 5582737 (1996-12-01), Gula et al.
patent: 5618851 (1997-04-01), Trochimcznk et al.

Affiliated with

Also associated with

Rating

Ion exchange and regeneration process for separation and removal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ion exchange and regeneration process for separation and removal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ion exchange and regeneration process for separation and removal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1801286