Smelting device and ironmaking furnace for producing granular iron at low temperature

Abstract

The invention discloses a smelting device and an iron smelting furnace for producing granular iron at a low temperature. The smelting device comprises parallel tube heating equipment, a feeding system, an iron smelting furnace heating device, a granulating part and a cooling and discharging system, wherein the feeding system is connected with the input end of the smelting furnace heating device, the output end of the smelting furnace heating device is connected with the cooling and discharging system, and the smelting furnace heating device and the granulating part are both provided with the parallel pipe heating equipment; the smelting furnace heating device is further provided with flow guide equipment; and the parallel tube heating equipment comprises at least one pair of parallel heat storage radiation heating tubes. According to the iron smelting furnace, parallel heat storage radiation heating tubes are adopted for heating, so that radiation heat is stable, iron ores can be subjected to a perfect oxidation-reduction reaction, furnace charge is discharged from the granulating part after the reaction, carbon-containing flue gas and the like in the iron smelting furnace heating device can enter the tubes again to be combusted, and thus, energy is saved. And compared with a blast furnace, the obtained iron material is high in purity, low in equipment investment and low in pollution.

Description

Technical field [0001] The present application relates to the field of refining miners, and in particular, there is a crystallurgical apparatus and a refining furnace for low temperature production of grain iron. Background technique [0002] In the metallurgical process, the iron ore is required to perform high temperature redox reactions. Therefore, the iron making furnace device is an indispensable high temperature processing equipment. [0003] At present, the iron-making furnace is a column reaction furnace, which uses a carbon burning heating method, which is very powerful. [0004] In addition, existing refining furnaces, because of electrical energy heating, there is a need to install more electrical components, as well as power facilities, complex structure, and more cost. [0005] During the process of iron making, there are many exhaust gas, and the high temperature treatment is incomplete, the exhaust gases that are discharged are still more carbon, contaminated the e...

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Problems solved by technology

[0003] The current ironmaking furnace is a column reactor, which uses carbon combustion heating method, which consumes a lot of electric energy

[0004] In addition, because the existing ironmaking furnace is heated by electric energy, more electrical components and supporting facilities for electric facilities need to be installed, the structure is complex, and the cost is high.

[0005] In the process of ironmaking, there is a lot of exhaust gas and incomplete high-temperature treatment, and the exhaust gas still contains more carbon, which pollutes the environment and air.

[0006] In addition to the carbon-containing combustible gas, the exhaust gas in the ironmaking process also has a lot of heat, and it is a waste of heat to directly remove it.

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