Method For Manufacturing High Purity Tin, Electrowinning Apparatus For High Purity Tin And High Purity Tin
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United States of America Patent
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Apr 7, 2016
app pub date -
Oct 1, 2015
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Oct 2, 2014
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Provided is a method for manufacturing high purity tin including: depositing electrodeposited tin on the surface of a cathode 11 by electrowinning in an electrolytic bath in which a diaphragm 14 is placed between an anode 12 and the cathode 11, by using a raw material for tin as the anode 12 and a leachate obtained by electrolytically leaching the raw material for tin in a sulfuric acid solution as an electrolytic solution, the electrolytic solution containing a smoothing agent for improving a surface property of the electrodeposited tin; discharging the electrolytic solution from the electrolytic bath such that lead in the discharged electrolytic solution is removed; and putting the electrolytic solution from which lead is removed back into the electrolytic bath.
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