The liquation process is used for the purification of

Liquation used for refining metal having low melting point and have associated with high melting impurities. e.g., Pb, Sn, Sb, Bi and Hg. 2 2 2 HgS O HgO SO HgO HgS Hg SO → → 2 2 2 2 2 2 2 Cu S O Cu O SO Cu S Cu O Cu SO → → 2 2 2 PbS O PbO SO PbO PbS Pb SO → → METALLURGY 33