Fluorin-free composite quick slag-forming constituents for convertor steelmaking and method of producing the same
A converter steel-making and slag-forming agent technology, which is applied in the manufacture of converters and other directions, can solve the problems of fluoride pollution, slow slagging, erosion of furnace lining, etc., and achieves a simple preparation method, reduces splashing, and improves slag-forming speed. Effect
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Embodiment 1
[0025] A fluorine-free composite rapid slagging agent for converter steelmaking, which contains the following components in weight percentage: 40% of MnO, 16% of CaO, 25% of TFe, 13.5% of MgO, H 2 O 0.5%, Al 2 o 3 3%, polyvinyl alcohol 2%.
[0026] The preparation method is as follows:
[0027] (1) MnO, CaO, TFe, MgO and Al 2 o 3 Send it to the jaw crusher for mixing and coarse crushing;
[0028] (2) Carry out fine crushing again until the particle size of the material is less than or equal to 3mm;
[0029] (3) In the pulverized material, add the polyvinyl alcohol of formula quantity, add the water that weight is 1.5 times of polyvinyl alcohol weight again, mix evenly;
[0030] (4) Send it into the ball pressing machine again and press it into an ellipsoid;
[0031] (5) Send the pressed balls into a drying room for curing or drying in fine weather until the moisture content of the product reaches 0.5%.
Embodiment 2
[0033] A fluorine-free composite rapid slagging agent for converter steelmaking, which comprises the following components in weight percentage: 35% of MnO, 18% of CaO, 30% of TFe, 8.3% of MgO, H 2 O 0.7%, Al 2 o 3 5%, polyvinyl alcohol 3%.
[0034] The preparation method is as follows:
[0035] (1) MnO, CaO, TFe, MgO and Al 2 o 3 Send it to the jaw crusher for mixing and coarse crushing;
[0036] (2) Carry out fine crushing again until the particle size of the material is less than or equal to 3mm;
[0037] (3) In the pulverized material, add the polyvinyl alcohol of formula quantity, add the water that weight is 1.5 times of polyvinyl alcohol weight again, mix evenly;
[0038] (4) Send it into the ball pressing machine again and press it into an ellipsoid;
[0039] (5) Send the pressed balls into a drying room for curing or drying in fine weather until the moisture content of the product reaches 0.7%.
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