Differential ph process for the recovery of metal values...
Dioxime kinetic enhancer for solvent extraction of gallium...
Direct acid elution of anionic exchange resins for recovery...
Direct ironmaking or steelmaking apparatus using...
Direct niobium and tantalum extraction contained in the...
Direct pressure leaching of copper-iron sulphides
Direct process for smelting of lead sulphide concentrates to...
Direct processing of metallic ore concentrates into ferroalloys
Direct production of metal carbides and metals from ores
Direct recovery of precious metals by solvent extraction and...
Direct reduction apparatus and method
Direct reduction process for making titanium
Direct reduction process for making titanium
Direct reduction process for production of aluminium
Direct reduction process using a single fluidised bed
Direct selective solvent leaching of nickel sulfide concentrate
Direct smelting of zinc bearing compounds to produce...
Direct smelting of zinc concentrates and residues
Direct smelting process
Direct smelting process for sulfide ores