application of a method for extraction of chromium in the form of a chrome / iron alloy from the chromium oxide containing dust of metallurgical processes as a starting material for the production of the chrome / iron alloy from the refining of molten steel from dust

摘要

A method of recovering non-volatile metals from materials in dust form containing metal oxides, comprising the steps of blowing the material into the lower portion of a reactor, said reactor containing a solid reducing agent, passing said starting material into a reduction zone within said lower portion, said reduction zone being maintained by the use of a plasma generator adjacent thereto, substantially instantaneously reducing and melting said starting material in sad reduction zone, and removing the melted and reduced metal product from the bottom of the reactor.