Treatment of pyrite and arsenophrite containing material with fe
Treatment of refractory carbonaceous sulfide ores for gold recov
Two stage leaching of limonitic ore and sea nodules
Two stage sulfuric acid leaching of sea nodules
Two-stage bioleaching of sulphidic material containing arsenic
Two-stage fluid bed reduction of manganese nodules
Use of gaseous mixture containing an inert gas and an oxygen...
Use of raw manganese nodules for oxidation leaching of reductive
Use of surfactants in the production of metal
Utilization of oxygen in leaching and/or recovery procedures emp
Utilization of oxygen in leaching and/or recovery procedures emp
Water-insoluble chelate exchange resins from aminopyridines and