Arc control in plasma arc reactors
Arc furnace steelmaking
Arc furnace steelmaking
Arc furnace steelmaking involving oxygen blowing
Arc heater reduction of zinc roast
Arc steelmaking
Argon in the basic oxygen process to control slopping
Arsenic and sulfur elimination from cobaltiferous ores
Arsenic removal from nickel matte
Atomization into a chamber held at reduced pressure
Autogenous process for conversion of metal sulfide concentrates
Autogenous smelting of lead in a top blown rotary converter