Energy-saving and environment-friendly protecting material for slab continuous casting mold
A technology of continuous casting mold and protective material, applied in the field of metallurgical auxiliary materials, can solve the problems of difficult to achieve the melting state and use effect of pre-melting material protective material
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Embodiment 1
[0012] Energy-saving and environment-friendly slab continuous casting crystallizer protection materials, its raw materials include C black, recarburizer, fluorite, sodium fluoride, cryolite, manganese carbonate, barium carbonate, white alkali, water slag, calcite, wollastonite, Yellow dextrin, its weight percent content is respectively 2.5%, 1%, 15%, 2%, 1%, 4%, 2%, 10%, 14%, 3%, 43%, 2.5%. In the continuous casting crystallizer protective material, the weight percentage of BaO is 2-4%, the weight percentage of MnO is 1.0-3.5%, and the binary alkalinity (CaO / SiO 2 ) is 1.15 ~ 1.30, the balance includes SiO 2 , CaO, Al 2 o 3 、Na 2 O, F — , and their weight percentages are SiO 2 25~30.0%, CaO 31~36%, Al 2 o 3 1.5~6.5%, Na 2 O 7.0~11.0%, F — 5~8.5%.
[0013] Note: It is recommended that this scheme be applied to most slab sections in domestic steel mills: 150 / 160 / 180 / 190 / 200 / 220 / 230 / 250 / 300×600~1000~1500~2500 (mm); steel type: High-quality carbon structural steel an...
Embodiment 2
[0015] Energy-saving and environment-friendly slab continuous casting crystallizer protection materials, its raw materials include C black, recarburizer, fluorite, sodium fluoride, cryolite, manganese carbonate, barium carbonate, white alkali, water slag, calcite, wollastonite, Yellow dextrin, its weight percent content is respectively 5%, 1%, 11%, 4%, 3%, 2%, 5%, 12%, 8%, 6%, 41%, 2%.
[0016] In the continuous casting crystallizer protective material, the weight percentage of BaO is 2-4%, the weight percentage of MnO is 1.0-3.5%, and the binary alkalinity (CaO / SiO 2 ) is 1.15 ~ 1.30, the balance includes SiO 2 , CaO, Al 2 o 3 、Na 2 O, F— , and their weight percentages are SiO 2 25~30.0%, CaO 31~36%, Al 2 o 3 1.5~6.5%, Na 2 O 7.0~11.0%, F — 5~8.5%.
Embodiment 3
[0018] Energy-saving and environment-friendly slab continuous casting crystallizer protection materials, its raw materials include C black, recarburizer, fluorite, sodium fluoride, cryolite, manganese carbonate, barium carbonate, white alkali, water slag, calcite, wollastonite, Yellow dextrin, its weight percent content is respectively 2%, 2%, 13%, 3%, 2%, 3%, 3%, 11%, 11%, 5%, 55.5%, 1.5%. In the continuous casting crystallizer protective material, the weight percentage of BaO is 2-4%, the weight percentage of MnO is 1.0-3.5%, and the binary alkalinity (CaO / SiO 2 ) is 1.15 ~ 1.30, the balance includes SiO 2 , CaO, Al 2 o 3 、Na 2 O, F — , and their weight percentages are SiO 2 25~30.0%, CaO 31~36%, Al 2 o 3 1.5~6.5%, Na 2 O 7.0~11.0%, F — 5~8.5%.
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