| 摘要 |
Carbon iron composite is produced by feeding a formed product of a carbon-containing substance and an iron-containing substance into a carbonization furnace, carbonizing the formed product in a carbonization zone, blowing a coolant gas into the furnace through a coolant-gas-blowing tuyere disposed in a cooling zone to cool carbon iron composite, exhausting a furnace gas through an outlet in a top portion, and discharging the carbon iron composite through a lower portion of the cooling zone. The carbonization involves supplying the coolant gas after the coolant gas has undergone heat exchange with the carbon iron composite in the cooling zone to the carbonization zone, blowing a high-temperature gas into the furnace through a high-temperature-gas-blowing tuyere disposed in a lower portion of the carbonization zone, and blowing a low-temperature gas into the furnace through a low-temperature-gas-blowing tuyere disposed in an intermediate portion of the carbonization zone. |
