The device and method for producing a molten iron by high-temperature
smelting of a pre-reduced
iron ore. The device for producing the molten iron by high-temperature
smelting of the pre-reduced ironore comprises a furnace body, an
electrode and a
coal-fired spray gun, and a
raw material conveying pipeline is inserted into the furnace body; an upper-layer space is provided with a high-temperatureflue gas outlet, an
electrode and a
coal-fired spray gun, the bottom end of the
electrode is located in a
slag layer area, a
slag discharging port is located in the
slag layer space, and a molten iron outlet is in communication with a molten iron layer area; the method for producing the molten iron by high-temperature
smelting of the pre-reduced
iron ore comprises the following steps that (1) thepre-reduced
iron ore and a fusing agent is mixed into a device, (2) a power supply is started, the
coal powder is injected, the iron ore is pre-reduced and the fusing agent is molten to form a melt;(3) the
iron oxide reacts with the coal
powder to generate molten iron and furnace slag, and the
electric arc generated through the molten iron to further heat the molten iron; and (4) the temperaturein the
smelting process is 1350-1550 DEG C, the slag discharging opening is started to
discharge the slag, and then the molten iron outlet is started to
discharge the molten iron. According to the device and method for producing the molten iron by high-temperature smelting of the pre-reduced iron ore, the
energy consumption is cooperatively utilized, the
energy consumption loss is greatly reduced, and the energy utilization efficiency is improved.