| 摘要 |
1. A method for reducing ferrous metal content of a slag generated in the production of a ferrous metal in a suspension smelting furnace by feeding metallurgical coke into the furnace in addition to concentrate, oxygenous gas and flux in order to reduce the slag characterized in that the coke charged into the furnace is metallurgical coke, which has a grain size in the region of 1-25 mm. 2. A method according to claim 1, characterized in that the coke is fed via a concentrate burner. 3. A method according to claim 1, characterized in that drifting of small particles containing non-ferrous metal to the back of the furnace and out of the furnace with the slag is prevented by placing baffles into the furnace from the roof downwards. 4. A method according to claim 3, characterized in that the baffles (10) extend inside the molten slag bath (7). 5. A method according to claim 3, characterized in that the baffles (10) extend near the surface of the slag layer (7). 6. A method according to claim 3, characterized in that the baffles (10) are manufactured from water-cooled copper elements, which are protected by a fireproof material. 7. A method according to claim 1, characterized in that the ferrous metal is copper. 8. A method according to claim 1, characterized in that the ferrous metal is nickel. |
