Molten steel thermal insulating agent and thermal insulating agent layer thereof
A thermal insulation agent and molten steel technology, applied in the field of thermal insulation agent, can solve the problems of thermal insulation effect to be improved, high fixed carbon content, poor spreading effect, etc., and achieve excellent spreading performance, low production cost, and good thermal insulation effect
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Embodiment 1
[0020] The invention provides a molten steel heat preservation agent, comprising the following components in parts by mass: carbonized rice husk ash: 70 parts; carbon source (coke powder): 10 parts; silicon source (dusted perlite): 1 part; The carbonized rice husk ash includes elements in the following mass percentages: C: 2%; Si: 60%; balance 38%: H, O, S, Ca, Fe, P; the moisture content of the carbonized rice husk ash is 0.7% of the total mass of the insulating agent; the bulk density of the S1 layer is 0.35g / cm 3 .
[0021] The average particle size of the carbon source is not more than 100nm, and 90% of the particle size ranges from 90 to 100nm; the mass percentage of the carbon source carbon is 87.15%. The average particle size of the carbon source is not more than 100nm, and 85% of the particle size ranges from 90 to 100nm; the mass percentage of silicon in the silicon source is 92.05%. Both the carbon source and the nitrogen source are nano-scale powders, and most of ...
Embodiment 2
[0024] The invention provides a molten steel thermal insulation agent, comprising the following components in parts by mass: carbonized rice husk ash: 85 parts; carbon source (coke powder, graphite powder): 5 parts; silicon source (dusted perlite, pulverized coal ash): 15 parts; the carbonized rice husk ash includes the following elements in mass percentage: C: 10%; Si: 50%; balance 40%: H, O, S, Ca, Fe, P; the carbonized rice The moisture content of the shell ash is 1.7% of the total mass of the thermal insulation agent; the bulk density of the S1 layer is 0.20g / cm 3 .
[0025] The average particle size of the carbon source is not more than 100nm, and 90% of the particle size ranges from 90 to 100nm; the mass percentage of the carbon source carbon is 87.15%. The average particle size of the carbon source is not more than 100nm, and 85% of the particle size ranges from 90 to 100nm; the mass percentage of the silicon source silicon is 92%.
[0026] The spreading thickness of ...
Embodiment 3
[0028] The invention provides a molten steel heat preservation agent, comprising the following components in parts by mass: carbonized rice husk ash: 100 parts; carbon source (graphite powder): 1 part; silicon source (dusted perlite, fly ash, silicon algae): 30 parts; the carbonized rice husk ash includes the following elements in mass percent: C: 17%; Si: 40%; balance 43%: H, O, S, Ca, Fe, P; the carbonized The water content of the rice husk ash is 3% of the total mass of the thermal insulation agent; the bulk density of the S1 layer is 0.18g / cm 3 .
[0029] The average particle size of the carbon source is not more than 100nm, and 95% of the particle size ranges from 90 to 100nm; the mass percentage of the carbon source carbon is 85%. The average particle size of the carbon source is not more than 100nm, and 85% of the particle size ranges from 90 to 100nm; the mass percentage of the silicon source silicon is 96%.
[0030] The spreading thickness of the S1 layer is 5 cm. ...
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