METHOD FOR ELECTROCHEMICALLY REMOVING NICKEL FROM ANTIMONY OF ARSENIC AND TIN CONTAINED IN LEAD CHLORIDE SOLUTION

摘要

The invention relates to a process for removing nickel from lead chloride dissolved into chloride brine to obtain lead chloride solution wherein the nickel concentration is under 50 mg/liter. The present invention comprises the following steps: (a) adjusting the content of an element selected from the group of arsenic and antimony to a value of at least 1/5 of the concentration in nickel expressed in grams per liter; (b) contacting the solution from (a) with lead powder thus precipitating nickel and the said element selected from the group of arsenic and antimony.