Special continuous casting crystallizer casting powder for carbon steel in ESP
A continuous casting mold and mold slag technology, applied in the field of steelmaking, can solve the problems of poor thermal insulation, slag addition, subcutaneous bubbles, etc.
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Embodiment 1
[0021] A special continuous casting mold powder for medium carbon steel in ESP, which includes the following components, fluorite, wollastonite, lithium limestone, lithium carbonate, manganese carbonate, sodium fluorosilicate, white alkali, bauxite, refractory Powder, clinker, carbon black, earthy graphite, binder, water reducer, the weight percentages are 13.6%, 41.5%, 2.0%, 1.0%, 2.0%, 3.0%, 12.0%, 7.3%, 2.0%, 3.0%, 2.0%, 1.0%, 1.5%, 1.0%.
[0022] The chemical composition percentage in the mold flux is 31.15% CaO, SiO 2 26.17%, MgO 7.37%, Al 2 o 3 4.54%, Na 2 O 7.88%, F - 7.72%, MnO 2 1.48%, Li 2 O 0.51%, C 2.78%. The physical index binary alkalinity (CaO / SiO2 ) 1.19. The melting temperature is 1025°C, and the viscosity at 1300°C is 0.12Pa·s.
Embodiment 2
[0024] A special continuous casting mold powder for medium carbon steel in ESP, which includes the following components, fluorite, wollastonite, lithium limestone, lithium carbonate, manganese carbonate, sodium fluorosilicate, white alkali, bauxite, refractory Powder, clinker, carbon black, earthy graphite, binder, water reducer, the weight percentages are 14.4%, 34.2%, 3.8%, 1.0%, 4.0%, 3.0%, 11.5%, 4.6%, 2.0%, 3.50%, 2.0%, 2.0%, 2.0%, 0.5%.
[0025] The chemical composition percentage in the mold flux is CaO 29.46%, SiO 2 23.97%, MgO 6.95%, Al 2 o 3 5.53%, Na 2 O 7.6%, F - 8.07%, MnO 2 2.97%, Li 2 O 0.64%, C 2.98%. The physical index binary alkalinity (CaO / SiO 2 ) 1.23. The melting temperature is 1066°C, and the viscosity at 1300°C is 0.103Pa•s.
Embodiment 3
[0027] A special continuous casting mold powder for medium carbon steel in ESP, which includes the following components, fluorite, wollastonite, lithium limestone, lithium carbonate, manganese carbonate, sodium fluorosilicate, white alkali, bauxite, refractory Powder, clinker, carbon black, earthy graphite, binder, water reducer, the weight percentages are 14.4%, 34.2%, 3.8%, 1.0%, 4.0%, 3.0%, 11.5%, 4.6%, 2.0%, 3.50%, 2.0%, 2.0%, 2.0%, 0.5%.
[0028] The chemical composition percentage in the mold flux is 32.1% CaO, SiO 2 25.63%, MgO 6.63%, Al 2 o 3 3.85%, Na 2 O 6.35%, F - 9.4%, MnO 2 2.6%, Li 2 O 0.67%, C 3.2%. The physical index binary alkalinity (CaO / SiO 2 ) 1.25. The melting temperature is 1076°C, and the viscosity at 1300°C is 0.089Pa·s.
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