CPC C25D 3/38 (2013.01) [C25C 1/12 (2013.01); C25C 7/06 (2013.01)] | 10 Claims |
1. A method of suppressing acid mist liberated from an acidic electrolyte solution in a copper electrowinning process, the method comprising adding licorice extract solids in the form of a liquid licorice extract, a powdered licorice extract, a reconstituted licorice extract, or a mixture thereof, to the acidic electrolyte solution in an amount sufficient to provide acid mist suppression during the copper electrowinning process, wherein the amount sufficient comprises about 0.1 ppm to about 100,000 ppm of licorice extract solids, based on the total weight of the acidic electrolyte solution, and wherein the powdered licorice extract exhibits a pH of 4.5 to 6 when reconstituted as a 1 wt. % aqueous solution, a moisture content of about 3-7 wt. %, and a bulk density of about 0.5 g/mL.
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