1 ) After the nano heat insulation board is used in the converter, the shell temperature is reduced by 48 deg c, and the tapping temperature of the converter is increased by 7 deg c on average, so that sufficient conditions are prepared for lowering the tapping temperature of the converter; Under the same smelting condition, the addition of cold materials such as ore increased from 30.11 kg / t to 32.23 kg / t, and the addition of cold materials per ton steel increased by 2.12 kg.
2 ) Compare that nano heat insulation board used in the ladle with the reflective heat insulation board, it is found that the nano heat insulation board obviously improve the heat insulation effect of the ladle and the steel water temperature energy saving and environmental protection by 9 degrees, and the exit temperature of the lf furnace of the ladle can still meet the temperature requirement of molten steel production in tundish continuous cas under the condition that the exit temperature is reduced by 5 deg C..
3 ) Compared with the nano heat shield, the temperature drop rate of molten steel is reduced by 0.10 ℃ / min in 27 min. meanwhile, the heating time of lf furnace is reduced by 8.8 % and the power consumption is reduced by 4.9 %.
4 ) The use of nano heat shield in tundish reduce the temperature of the tundish shell, improves the work environment, reduces the deformation of the shell, reduces the temperature of the shell by more than 30 deg c on average, and reaches the maximum temperature drop value of 60 deg c at the lat stage of the tundish shell during continuous casting.
5 ) The thickness of the nano heat insulation board is very thin, only 7 mm, does not occupy the space of the refractory lining of steel-making equipment, does not affect the normal service life of the refractory lining, and the ladle permanent lining castable does not have the accidents such as cracking shrinkage phenomenon and envelope.
6 ) The comprehensive utilization of nano heat insulation board in steel-making system and a series of production process measures can achieve the purpose of energy saving and consumption reduction, resulting in a comprehensive energy saving economic benefit of 14.8 million yuan / a.