Recovering iron, nickel, or cobalt from sulfate solution

Recovering magnetite and ammonium sulphate from ammonium jarosit

Recovery of chlorine values

Recovery of cobalt

Recovery of cobalt and manganese from ash of residue from manufa

Recovery of cobalt component from 3-pentenoic ester synthesis

Recovery of cobalt from ammoniacal solutions containing cobalt a

Recovery of cobalt values by absorption from ammoniacal solution

Recovery of iron oxide from coal fly ash

Recovery of nickel and cobalt carbonates from ammoniacal leach s

Recovery of nickel and cobalt from leach slurries

Recovery of nickel chloride and sulfur from waste products

Recovery of non-ferrous metals from smelter flue dusts and sludg

Recovery of zinc from zinc-containing sulphidic material

Reductive ammoniacal leaching of nickel and cobalt bearing...

Reductive leaching of limonitic ores with hydrogen sulfide

Regeneration of organic extractants containing .alpha.-hydroxyox

Removing zinc from a nickel solution by extraction

Resin-in-pulp method for recovery of nickel and cobalt

Roast-neutralization-leach technique for the treatment of lateri