Smelting method capable of reducing steel and iron material consumption of electric furnace steelmaking
An electric furnace steelmaking and smelting method technology, applied in the field of iron and steel metallurgy, can solve the problems of high iron content in slag, achieve the effects of reducing the consumption of iron and steel materials, reducing the influence of molten pool temperature, and slowing down the speed of blending
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Embodiment 1
[0022] The technical solution of the invention is used for smelting in a FUCHS electric arc furnace with a nominal capacity of 100t.
[0023] After tapping in the previous smelting cycle, 10-20t of steel and 3-5t of slag are left in the electric furnace, and the furnace body is shaken after tapping.
[0024] Then, 25t of scrap steel is added to the furnace at one time by driving and transporting. Add 500kg of lime from the high-level silo after the scrap steel has been blended. After that, the primary molten iron is blended into the furnace from the molten iron chute through the hydraulic device. The weight of the primary molten iron is 65t, and the blending time is 3 minutes. After 10 minutes of smelting, add secondary molten iron, the weight of secondary molten iron is 20t, and the time for adding is 6 minutes.
[0025] Turn on the four furnace wall oxygen lances after all the molten iron has been blended, and set the oxygen blowing pressure of the furnace wall oxygen lanc...
Embodiment 2
[0030] The technical solution of the invention is used for smelting in a FUCHS electric arc furnace with a nominal capacity of 100t.
[0031] After tapping in the previous smelting cycle, 10-20t of steel and 3-5t of slag are left in the electric furnace, and the furnace body is shaken after tapping.
[0032] Then, 20t of scrap steel is added to the furnace at one time through driving transfer. Add 600kg of lime from the high-level silo after the scrap steel has been blended. After that, the primary molten iron is blended into the furnace from the molten iron chute through the hydraulic device. The weight of the primary molten iron is 75t, and the blending time is 3.5 minutes. After 12 minutes of smelting, add secondary molten iron, the weight of secondary molten iron is 15t, and the time for adding is 5 minutes.
[0033] Turn on the four furnace wall oxygen lances after all the molten iron has been blended, and set the oxygen blowing pressure of the furnace wall oxygen lance...
Embodiment 3
[0038] The technical solution of the invention is used for smelting in a FUCHS electric arc furnace with a nominal capacity of 100t.
[0039] After tapping in the previous smelting cycle, 10-20t of steel and 3-5t of slag are left in the electric furnace, and the furnace body is shaken after tapping.
[0040] Then, 30t of scrap steel is added to the furnace at one time by driving and transporting. Add 600kg of lime from the high-level silo after the scrap steel has been blended. After that, the primary molten iron is blended into the furnace from the molten iron chute through the hydraulic device. The weight of the primary molten iron is 82t, and the blending time is 3 minutes; the secondary molten iron operation is not performed.
[0041] Open the four furnace wall oxygen lances after all the molten iron has been blended, and set the oxygen blowing pressure of the furnace wall oxygen lance to 0.6MPa; open the furnace door oxygen lance after blowing for 3 minutes, and set the ...
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