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| Optimization of Power Supply System and Electric Characteristic for LF |
| WANG Yi-fang,HU Zhi-gang,ZHAO Ying-li,LI Jie |
| General Headquarters， Hebei Iron and Steel Group, Shijiazhuang 050000, Hebei, China |
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Abstract The electric characteristic curves for Hebei Steel 150t LF were analyzed by using electric characteristic optimizing model. The reasonable electric supply systems were proposed according to work point technical parameters of first four levels; the optimization efficiently reduced refining time and improved heating efficiency. The results show that the speed of heating-up of 150t ladle furnace is from 2.46 to 4.25℃/min for the first four levels. Through optimizing power supply system, the heating-up speed can be improved 0.93℃/min and power factor at heating stage is increased from 0.5 to 0.72, heat efficiency is increased from 0.68 to 0.82, and the cost of product is reduced four yuan/t.
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Received: 13 September 2012
Published: 18 April 2013
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2013, Vol. 48 
