Lead dissolution from sulphurised cpds. - using copper chloride solns.

摘要

Sulphide cpds. contg. lead are treated with an aq. soln. contg. a chloride of Cu, Bi, As, Sb and/or Ag, the amt. of chloride being less than or equal to that which i stoichiometrically necessary to completely dissolve the Pb. Pb can be selectively leached from sulphur-contg. cpds. Conc. CuCl2 solns. e.g. those where the Cu content is >=30 g/l. can be used.