Title:
METHOD FOR RECLAIMING LEAD
Document Type and Number:
WIPO Patent Application WO/2011/139603
Kind Code:
A3
Abstract:
A method for reducing tin in lead bullion has the steps of adding an Arrhenius base to a kettle containing lead bullion and tin, adding a byproduct of conventional detinning to the kettle, agitating contents of the kettle, and removing a layer of slag from the kettle. The disclosed method removes tin via chemical oxidation, adds lead via chemical reduction of an oxide from the byproduct of conventional detinning, and preserves most of the antimony content of the lead bullion.
Inventors:
SCHULZ JERRY D (US)
SEEBECK ROBERT E (US)
EAGAN LAWRENCE G (US)
SEEBECK ROBERT E (US)
EAGAN LAWRENCE G (US)
Application Number:
PCT/US2011/033586
Publication Date:
March 01, 2012
Filing Date:
April 22, 2011
Export Citation:
Assignee:
STANNUM GROUP LLC (US)
SCHULZ JERRY D (US)
SEEBECK ROBERT E (US)
EAGAN LAWRENCE G (US)
SCHULZ JERRY D (US)
SEEBECK ROBERT E (US)
EAGAN LAWRENCE G (US)
International Classes:
C22B13/00; C22B7/04
Foreign References:
| US6517789B1 | 2003-02-11 | |||
| US5431713A | 1995-07-11 | |||
| US5538532A | 1996-07-23 | |||
| US5912402A | 1999-06-15 |
Other References:
See also references of EP 2566993A4
Attorney, Agent or Firm:
BERGMAN, Larrin et al. (P.A.312 South Third Stree, Minneapolis Minnesota, US)
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