Recovery of nitric acid soluble transition metals from sulfur an

Recovery of precious metals by oxidation in the aqueous phase of

Recovery of silver-containing scales from aqueous media

Recovery of vanadium and copper catalyst metals using ketones

Recovery of zinc from sulphidic concentrates

Recuperation of cyanides from rinsing solutions of cyanidric pro

Reduction leaching of raw sea nodules with sulfides

Reduction of lime consumption when treating refractor gold...

Reduction of lime consumption when treating refractory gold...

Reduction roasting of metal ores

Refining of manganese oxide ores

Regeneration of cupric etchants and recovery of copper sulfate

Removal of base metals and cyanide from gold-barren CIP solution

Removal of dissolved cadmium and copper from sulphate solution w

Removal of iron from aqueous acid solutions containing iron and

Removal of metals from waste materials that contain bimetallic s

Removal of selenium (IV) and (VI) from acidic copper sulphate so

Removal of selenium from acidic copper/nickel solutions

Removing anions from alkaline silicate solutions

Reoximation of metal extraction circuit organics