Molten iron dephosphorization agent manufactured by using converter dry-method dust-removal ash as raw material
A technology of converter dry dust removal and water dephosphorization agent is applied in the direction of improving process efficiency, which can solve the problems of low lime slag formation rate, difficulty in lime slag formation, and low processing temperature, and achieve high CaO activity and slag basicity. And the effect of stable dephosphorization effect and fast slag formation
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[0028] According to the composition scope of the dephosphorization agent of the present invention, the production and practical application tests of the dephosphorization agent were carried out. Dephosphorization agent raw material converter ash accounted for 45% of the total mass, active lime powder accounted for 45%, fluorite powder accounted for 10%. A comparative test of conventional slagging agents was carried out.
[0029] Table 1 Dephosphorization agent composition / %
[0030] CaO
Fe 2 o 3
FeO
CaF 2
SiO 2
al 2 o 3
MgO
50.88
21.36
14.09
8.50
4.28
1.21
3.72
[0031] Put 200kg of pig iron into a 500kg intermediate frequency induction furnace. The induction furnace has the function of simulating top-blowing and bottom-blowing compound blowing. After the start of the test, the gun was lowered to blow oxygen, and steel scrap and pre-mixed slag were added...
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