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AssigneeMetallo Belgium
InventorsBert Coletti, Jan Dirk A. Goris, Yves De Visscher, Charles Geenen, Walter Guns, Niko Mollen, Steven Smets, Andy Breugelmans
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A process for the production of a crude solder composition includes the provision of a first solder refining slag that includes tin and/or lead. The process further includes the steps of partially reducing the first solder refining slag, thereby forming a crude solder metal composition and a second solder refining slag, followed by separating the second solder refining slag from the crude solder metal composition, and partially reducing the second solder refining slag, thereby forming a second lead-tin based metal composition and a second spent slag followed by separating the second spent slag from the second lead-tin based metal composition A copper containing fresh feed is added to step (ii), preferably before reducing the second solder refining slag.
A process for producing a crude solder composition, comprising the provision of a first solder refining slag which slag comprises at least 12% wt together of tin and lead and at most 10.0% wt together of copper and nickel, the process further comprising the steps of:
Dependencies are inferred from the claim text.