1) Metallurgical process 
Liquation is a metallurgical method for separating metals from an ore or alloy. The material must be heated until one of the metals starts to melt and drain away from the other and can be collected. This method was largely used to remove lead containing silver from copper, but it can also be used to remove antimony minerals from ore, and refine ti...[metallurgy] The Deadweights` album cover for First Wave Complete Destruction http://rateyourmusic.com/release/album/the_deadweights/first_wave_complete_destruction/ ...
• (n.) The act or operation of making or becoming liquid; also, the capacity of becoming liquid. • (n.) The process of separating, by heat, an easily fusible metal from one less fusible; eliquation.
(from the article `tin processing`) Another fire-refining method is liquation. Used to treat both impure tin and dross from smelting, it removes those impurities that have a higher ...
Li·qua'tion (li*kwā'shŭn) noun [ Latin liquatio : confer French liquation .] 1. The act or operation of making or becoming liquid; also, the capacity of becoming liquid. 2. (Metal.) The process of separating, by heat, an easily fusible metal from one ...
Partial melting of an alloy.
Partial melting of an alloy.