| 摘要 |
PROBLEM TO BE SOLVED: To provide an ore charging device, in which the trouble in the equipment is little and the charge of pre-reduced ore containing dropped ore generated in a pre-reduction furnace into a smelting reduction furnace can suitably be executed and the consumption of carrier gas for charging the raw material into the furnace can be reduced in comparison with the conventional device. SOLUTION: This ore charging device is provided based on the knowledge and the experience, in which scattered quantity of the ore into the generating gas in the furnace can be reduced by charging the fine powdery ore into the smelting reduction furnace 1 in the state of mixing with coarse grain ore and the carrier gas quantity can be reduced in comparison with the conventional device, and the device is provided with an ore take-off system for taking off the coarse grain ore from a fluidized bed in the pre-reduction furnace 2, an ore take-off system for taking off the fine powdery ore recovered from the exhaust gas in the pre-reduction furnace 2, a dropped ore take-off system for taking off the dropped ore downward of a dispersed plate of the pre-reduction furnace 2, one set of storing hopper 9 for supplying each ore through each take-off system in these three systems and an ore charging system for charging the ore into the smelting reduction furnace 1 from the storage hopper 9.
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