Recovering hydrogen from gas stream using metal hydride
Recovering iron, nickel, or cobalt from sulfate solution
Recovering magnetite and ammonium sulphate from ammonium jarosit
Recovering metal values from marine manganese nodules
Recovering metals from spent hydroprocessing catalysts
Recovering metals from sulfidic materials
Recovering method of catalytic component and carrier from waste
Recovering mineral values from ores
Recovering mineral values from ores
Recovering nitrogen bases from a hydrosulfide/sulfur dioxide rem
Recovering sulfur from ammonia acid gas stream
Recovering sulfur from gas streams containing hydrogen sulfide
Recovering TiO.sub.2 concentrates from TiO.sub.2 -containing sub
Recovering uranium from wet process phosphoric acid with alkylph
Recovering vanadium oxides from petroleum coke by melting
Recovering vanadium values from ammonium bicarbonate solution
Recovering vanadium values from ammonium bicarbonate solution us
Recovery and purification of iridium
Recovery and purification of silica
Recovery and recycle of molybdenum values from coal liquefaction