Hydrometallurgy
[hahy-druh-met-l-ur-jee] /ˌhaɪ drəˈmɛt lˌɜr dʒi/
noun
1.
the technique or process of extracting metals at ordinary temperatures by leaching ore with liquid solvents.
/ˌhaɪdrəʊˈmɛtəˌlɜːdʒɪ; -mɛˈtælədʒɪ/
noun
1.
a technique for the recovery of a metal from an aqueous medium in which the metal or the gangue is preferentially dissolved
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