METHOD FOR RECOVERING PLATINUM GROUP ELEMENT

摘要

A method for recovering platinum group elements uses a closed electric furnace equipped with at least one electrode for passing electric current through and heating material charged into the furnace and a roof for substantially shielding material charged into the furnace from the exterior atmosphere. An oxide raw material entraining platinum group elements, copper oxide, solid carbonaceous reducing agent and flux are charged into the electric furnace and the electrode is used to pass electric current through and heat the charged material to melt and reduce the material, thereby forming a layer of molten metal under a molten slag layer; and enriching platinum group elements in this molten metal. At this time, the oxide raw material, copper oxide, solid carbonaceous reducing agent and flux are all prepared as powdery or particulate materials, these powdery or particulate materials are premixed and then charged into the electric furnace, and a standing step is provided wherein the heat-melted material in the furnace is allowed to stand at a temperature of 1200 - 1500 DEG C for at least 5 hours, whereafter the molten metal containing platinum group elements is discharged outside the furnace.