| 摘要 |
The invention relates to a method for refining copper concentrate. In the method, copper concentrate (1), flux (2) and reaction gas (3) are fed together into the reaction shaft (5) of a suspension smelting furnace (4), for instance to the reaction shaft (5) of a flash smelting furnace, and in the suspension smelting furnace (4), there are created separate phases, i.e. blister copper (13) and slag (14). In the method, slag from a suspension smelting furnace (14) is conducted into an electric furnace (16), and the slag from the suspension smelting furnace(14) is treated in the electric furnace (16) with a reduction agent, so that in the electric furnace (16), there are created separate phases, i.e. bottom metal (17) and waste slag (18); the electric furnace bottom metal (17) is removed from the electric furnace (16), the electric furnace bottom metal (17) is granulated, and there is obtained granulated electric furnace bottom metal (22); and the granulated electric furnace bottom metal (22) is fed to the reaction shaft (5) of a suspension smelting furnace (4). |
