A kind of rapid white slag production material and technology for 120tlf refining furnace
A refining furnace and white slag technology, which is applied in the field of steel smelting, can solve the problems of white slag instability, long slagging time, and slow slagging speed, so as to promote the stable maintenance of white slag, fast slagging speed, and deep deoxidation degree Effect
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Embodiment 1
[0025] A 120tLF refining furnace rapid white slag production material, by weight percentage, including the following components: aluminum powder 8%, ferrosilicon powder 60%, carbon powder 25% and calcium fluoride 7%.
[0026] In this embodiment, the particle size of aluminum powder is 1 mm, the particle size of ferrosilicon powder is 1 mm, the particle size of carbon powder is 1 mm, and the particle size of calcium fluoride is 1 mm.
[0027] In this embodiment, the ferrosilicon powder is grade 72 ferrosilicon powder, the carbon powder is grade 90 carbon powder, and the calcium fluoride is grade 85 calcium fluoride.
[0028] A kind of 120tLF refining furnace is used for the technology of making white slag fast, comprises the following steps:
[0029] (1) The carbon content at the end of tapping of the 120t converter is ≥0.1%, adding 0.5kg / t of aluminum ingots for deoxidation, and the Al content of molten steel entering the station is 0.004-0.006%;
[0030] (2) Pour 1 / 2 of the ...
Embodiment 2
[0036] A 120tLF refining furnace rapid white slag making material, by weight percentage, includes the following components: 9% aluminum powder, 55% ferrosilicon powder, 30% carbon powder and 6% calcium fluoride.
[0037] In this embodiment, the particle size of aluminum powder is 2 mm, the particle size of ferrosilicon powder is 2 mm, the particle size of carbon powder is 2 mm, and the particle size of calcium fluoride is 2 mm.
[0038] In this embodiment, the ferrosilicon powder is grade 72 ferrosilicon powder, the carbon powder is grade 90 carbon powder, and the calcium fluoride is grade 85 calcium fluoride.
[0039] A kind of 120tLF refining furnace is used for the technology of making white slag fast, comprises the following steps:
[0040] (1) The carbon content at the end of tapping of the 120t converter is ≥0.1%, adding 0.6kg / t of aluminum ingots for deoxidation, and the Al content of molten steel entering the station is 0.004-0.006%;
[0041] (2) Pour 1 / 2 of the resid...
Embodiment 3
[0047] A 120tLF refining furnace rapid white slag production material, by weight percentage, including the following components: aluminum powder 10%, ferrosilicon powder 57%, carbon powder 28% and calcium fluoride 5%.
[0048] In this embodiment, the particle size of aluminum powder is 3 mm, the particle size of ferrosilicon powder is 3 mm, the particle size of carbon powder is 3 mm, and the particle size of calcium fluoride is 3 mm.
[0049] In this embodiment, the ferrosilicon powder is grade 72 ferrosilicon powder, the carbon powder is grade 90 carbon powder, and the calcium fluoride is grade 85 calcium fluoride.
[0050] A kind of 120tLF refining furnace is used for the technology of making white slag fast, comprises the following steps:
[0051] (1) The carbon content at the end of tapping of the 120t converter is ≥0.1%, adding 0.7kg / t of aluminum ingots for deoxidation, and the Al content of molten steel entering the station is 0.004-0.006%;
[0052] (2) Pour 1 / 2 of the...
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