关键词: LF精炼, 电耗, 钢水温降, 生产实践, 节能降耗

Abstract: Aiming at the problem of high power consumption in LF refining of a certain plant，the influencing factors of refining power consumption were analyzed．The optimization improvement measures such as composite reflection heat insulation board were adopted to improve the thermal insulation performance of ladle，optimizing the empty ladle time of on-line ladle and upgrading ladle baking system of oxy-fuel to increase temperature drop of ladle lining，increasing slag return in hot state of continuous casting and reducing the exposed area of molten steel in refining process were adopted．The production practice of reducing refining power consumption was also carried out．The temperature of molten steel in the production process was reduced by 28.17 ℃．The refining power consumption has been reduced from 45.14 kWh/t before improvement to 35.58 kWh/t at present，with an average reduction of 9.56 kWh/t，saving about 4.78 yuan per ton of steel refining cost. 

Key words: LF refining, power consumption, molten steel temperature drop, production practice, energy conservation