Production process of aluminium-containing steel
A production process and technology for aluminum steel, applied in the field of refining and continuous casting processes, can solve problems such as blockage of tundish nozzles, reduction of molten steel yield, and fluctuation of liquid level in molds, saving consumption and production costs, and improving internal quality. , the effect of accelerated production rhythm
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Embodiment 1
[0025] Embodiment 1 adopts 100 tons of ultra-high power AC electric arc furnaces to produce CM690 steel grades, and its production process is as follows:
[0026] About 100 tons of steelmaking raw materials such as molten iron and scrap steel were poured into the electric furnace in three batches to start smelting. During the smelting process of the electric furnace, the oxygen supply system adopted is that four furnace wall oxygen lances are used to supply oxygen at the same time during the melting period of the electric furnace smelting, that is, two Module oxygen lances, one EBT eccentric area oxygen lance, and one 4# small oxygen lance Gun, the oxygen flow rate is 40m respectively 3 / min, 40m 3 / min, 10m 3 / min, 15m 3 / min; in the melting to melting stage of smelting, first turn off the oxygen lance in the EBT eccentric area, then turn off one of the Module oxygen lances, and turn on the EBT lance 3-5 minutes before tapping, and the three oxygen lances supply oxygen at ...
Embodiment 2
[0027] Embodiment 2 adopts 100 tons of ultra-high power AC electric arc furnaces to produce 20CrMnTi steel grades, and its production process is as follows:
[0028] About 100 tons of steelmaking raw materials such as molten iron and scrap steel were poured into the electric furnace in three batches to start smelting. During the smelting process of the electric furnace, the oxygen supply system adopted is that four furnace wall oxygen lances are used to supply oxygen at the same time during the melting period of the electric furnace smelting, that is, two Module oxygen lances, one EBT eccentric area oxygen lance, and one 4# small oxygen lance Gun, the oxygen flow rate is 40m respectively 3 / min, 40m 3 / min, 10m 3 / min, 15m 3 / min; in the melting to melting stage of smelting, first turn off the oxygen lance in the EBT eccentric area, then turn off one of the Module oxygen lances, and turn on the EBT lance 3-5 minutes before tapping, and the three oxygen lances supply oxygen at...
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