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Process and apparatus for the direct reduction of iron ores and melting the reduced ores into a melter gasifier
Process and apparatus for the direct reduction of iron ores and melting the reduced ores into a melter gasifier
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机译：用于直接还原铁矿石并将还原的矿石熔融到熔融气化炉中的方法和设备
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摘要
The iron oxide particles are reduced in a shaft furnace (1) and the iron sponge particles obtained are fed to a melter gasifier (2), a coal fluidized bed being formed in the latter with the addition of coal and oxygen-containing gas, in which the heat necessary for melting the iron sponge particles and that in the Shaft furnace to be introduced reducing gas are generated, and wherein the blast furnace gas remaining after the reduction is withdrawn from the upper part of the shaft furnace and the dust-like solid particles mainly consisting of coal discharged with the reducing gas and / or with the blast furnace gas are washed out. In order to achieve optimal conversion of the raw materials used while increasing the hydrogen content in the reducing gas, to enable almost complete utilization of the coal particles discharged by the gases and to increase the temperature of the reducing gas, without the need for binders for the dusts and without the risk of Malfunctions and dust explosions are accepted, the suspension of the washed-out solid particles is thickened, separated into a clear overflow and a concentrated coal sludge, the coal sludge is returned to the melter gasifier, pressurized with oxygen and arranged in the upper part of the melter gasifier and directed against the coal fluidized bed Burners burned.
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