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Method and plant for treating flue gas dust of electric steelmaking furnaces and steel mills using pelletization
Method and plant for treating flue gas dust of electric steelmaking furnaces and steel mills using pelletization
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机译：造粒处理电炼钢厂和炼钢厂烟气粉尘的方法和装置
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摘要
A method for the flue gas dust treatment with pig iron production is described comprising the phases of storing the dusts obtained from the filtering of the electric steel mills' flue gas together with dusts of a product rich in iron oxides and a carbonaceous compound; mixing the storaged product; pelletizing the mass thus obtained; sintering the pelletized product; and unload the pelletized product into a pig iron producing coke furnace wherein the sintering phase is carried out in at least three separate and independent sub-phases of loading the pelletized product, carrying out its triggering and reducing the oxides in controlled air and temperature conditions, being the pelletized product in static conditions during the whole phase. The plant for the carrying out of the method comprising at least three silos (2, 3, 4) for the storing, said three silos being connected to at least a mixer (5) fit to unload the obtained compound into a pelletizing device (6), said pelletizing device being equipped with means fit to unload the pelletized product into a sintering device (16), equipped with means to directly or indirectly unload the sintered product into a furnace (8) wherein said sintering device (16) comprises a set of three stations (9, 10, 11) one independent from the other, able to carry out the separate sub-phases of loading of the mass, its triggering and sintering, and wherein at least two of said stations (10, 11) subsequent to the first one (9) keep the mass still in controlled air and temperature conditions.
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