Chemical and Biological Upgrading of Stillwater Platinum ...
In mid-1990, Stillwater Mining Company began operation of a production smelter in Columbus, MT, to treat the flotation concentrate produced at the Stillwater Mine in Nye, MT. The smelter operation, which consists of a submerged arc electric furnace followed by a top blown rotary converter, produces 1.5 ton-per-day of a high sulfide, Cu-Ni matte ...