"distillation" . "stratification jig" . "pyrometallurgy" . "electrolysis" . "flotation" . "manual sorting" . "incineration" . "Bayer process" . "sorting" . "bioleaching" . "roasting" . "comminution" . "physical treatment" . "coagulation" . "automatic sorting" . "carbon-in-leach" . "adsorption" . "chemical treatment" . "flocculation" . "burning" . "eddy current separator" . "crystallization" . "precipitation" . "cementation" . "liquid-solid separation" . "gravity separation table" . "centrifugal gravity separation" . "magnetic separation" . "sluice concentration" . "electrostatic separation" . "physico-chemical treatment" . "agglomeration" . "particle sizing" . "evaporation" . "hydrometallurgy" . "heavy medium separation" . "gravimetric sorting" . "smelting" . "leaching" . "calcining" . "carbon-in-pulp" . "solvent extraction" .