Apparatus for the on-line treatment of degassing and...

Apparatus for the production of large ingots in the electric...

Apparatus for treating molten metal

Apparatus for treating zinc

Apparatus for, and method of, purifying a melt, which,...

Apparatus with improved flow-through characteristics for the...

Aquecus oxidation of non-ferrous sulfide minerals

Aqueous acid oxidation of copper bearing mineral sulphides

Aqueous ammonia oxidative leach and recovery of mineral values

Aqueous oxidation of sulfidic silver ore

Aqueous solutions containing metal cyanide for cyanide...

Arc control in plasma arc reactors

Arrangement and method for reducing build-up on a roasting...

Arsenic recovery

Arsenic removal from nickel matte

Arsenical gold ore treatment

Assaying and/or recovering precious metals

Atmosphere controlling process for vacuum plants

Atmospheric control to prevent porosity of castings

Atmospheric leach process for the recovery of nickel and...