A special continuous casting mold mold powder for IF steel
A continuous casting mold and mold flux technology, which is applied in the field of continuous casting mold flux for IF steel, can solve the problems of low alkalinity, poor heat transfer performance, and high melting point of mold flux, so as to reduce the number of nucleation and reduce casting Billet temperature difference, the effect of improving heat transfer performance
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Embodiment 1
[0030] A mold powder for continuous casting mold for IF steel, made of the following raw materials in parts by weight: 4 parts of fluorite, 5 parts of cement clinker, 6 parts of white alkali, 1 part of carbon black, 55 parts of wollastonite, bentonite 4 parts, 2 parts of carbonless soot, 2 parts of calcite, 7 parts of manganese carbonate, 10 parts of bauxite and 1 part of binder.
[0031] Wherein the binder is sodium hydroxymethyl cellulose.
[0032] The chemical composition and weight percentage of the tested product are: CaO: 38.1%, SiO 2 : 33.0%, MgO: 8.9%, Al 2 o 3 : 8.8%, Na 2 O: 3.1%, MnO2 : 3.5%, F: 2.5%, C solid: 1.2%, the balance is unavoidable impurities, basicity: 1.15, melting point: 950°C, viscosity at 1300°C: 0.45Pa.S.
Embodiment 2
[0034] A mold powder for continuous casting mold for IF steel, made of the following raw materials in parts by weight: 7 parts of fluorite, 6 parts of cement clinker, 5 parts of white alkali, 1 part of carbon black, 56 parts of wollastonite, bentonite 5 parts, 3 parts of carbonless soot, 3 parts of calcite, 6 parts of manganese carbonate, 9 parts of bauxite and 1.5 parts of binder.
[0035] Wherein the binder is sodium hydroxymethyl cellulose.
[0036] The chemical composition and weight percentage of the tested product are: CaO: 39.5%, SiO 2 : 29.6%, MgO: 8.6%, Al 2 o 3 : 8.4%, Na 2 O: 3.5%, MnO 2 : 3.2%, F: 4.8%, C solid: 1.0%, the balance is unavoidable impurities, basicity: 1.33, melting point: 970°C, viscosity at 1300°C: 0.39Pa.S.
Embodiment 3
[0038] A mold powder for continuous casting mold for IF steel, made of the following raw materials in parts by weight: 6 parts of fluorite, 7 parts of cement clinker, 4 parts of white alkali, 3 parts of carbon black, 57 parts of wollastonite, bentonite 6 parts, 4 parts of carbonless soot, 4 parts of calcite, 5 parts of manganese carbonate, 8 parts of bauxite and 2 parts of binder.
[0039] Wherein the binder is sodium lignosulfonate.
[0040] The chemical composition and weight percentage of the tested product are: CaO: 40.6%, SiO 2 : 31.8%, MgO: 7.6%, Al 2 o 3 : 5.4%, Na 2 O: 3.1%, MnO 2 : 3.4%, F: 4.6%, C solid: 1.9%, the balance is unavoidable impurities, basicity: 1.28, melting point: 1000°C, viscosity at 1300°C: 0.32Pa.S.
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