METHOD FOR REFINING CONCENTRATE CONTAINING PRECIOUS METALS

The invention relates to a method for refining precious metal concentrate, and according to said method, at least the precious metal concentrate (9), reaction gas (10), flux (11) and flue dust (12) to be treated are fed together into the reacton shaft (3) of a suspension smelting furnace (1); in the suspension smelting furnace, there are created separate phases, matte (8) and slag (7); and the slag created in the suspension smelting furnace is conducted into an electric furnace (2), so that there is created metallicized matte (14) and waste slag (13). Thereafter the matte (8) from the suspension smelting furnace is conducted to hydrometallurgical treatment (15), and the slag conducted into the electric furnace is treated together with a reducing agent and possibly with a material lowering the melting point or improving fluidity, and the obtained metallicized matte (14) is conducted either to hydrometallurgical treatment (16) or back into the suspension smelting furnace in (1). Pronalazak se odnosi na postupak rafinacije koncentrata plemenitih metala, i prema tom postupku, najmanje koncentrat (9) plemenitog metala, reakcioni gas (10), topitelj (11) i leteća prašina (12) koji se obradjuju uvode se zajedno u reakcioni trup (3) peci (1) za topljenje suspenzije; u pec (1) za topljenje suspenzije formiraju se odvojene faze kamenca (8) i troske (7); i troska formirana u peci za topljenje suspenzije prevodi se u električnu peć (2) tako da se stvaraju metalizovani kamenac (14) i otpadna troska (13). Zatim se kamenac (8) iz peći za topljenje suspenzije prevodi u hidrometaluršku obradu (15), a troska prevedena u električnu peć obradjuje se zajedno da redukcionim sredstvom i, po potrebi, sa sredstvom za snižavanje tačke topljenja ili poboljšanje fluidnosti, a stvoreni metalizovani kamenac (14) prevodi se ili na hidrometaluršku obradu (16) ilise vraća u peć (1) za topljenje suspenzije.