超高功率废钢预热型直流电弧炉物料优化计算模型  

MATERIAL OPTIMIZATION CALCULATION MODEL OF ULTRA-HIGH POWER SCRAP PREHEATING DC ELECTRIC ARC FURNACE

作　　者：朱立光 李港湾 郑亚旭 杨琰丽[3] 郭志红[1] 霍彦朋 丁志军 王波[1] Zhu Liguang;Li Gangwan;Zheng Yaxu;Yang Yanli;Guo Zhihong;Huo Yanpeng;Ding Zhijun;Wang Bo(College of Materials Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,Hebei;Hebei Provincial Key Laboratory of Material Near Net Forming Technology,Shijiazhuang 050018,Hebei;School of Information Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,Hebei;不详)

机构地区：[1]河北科技大学材料科学与工程学院,河北石家庄050018 [2]河北省材料近净成形技术重点实验室,河北石家庄050018 [3]河北科技大学信息科学与工程学院,河北石家庄050018 [4]河钢集团石钢公司,河北石家庄050031

出　　处：《河北冶金》2022年第6期7-13,共7页Hebei Metallurgy

基　　金：国家自然科学基金(51974102);河北省重点研发项目(19211009D,20311003D,21311002D);河北省教育厅科学研究计划项目(QN2019029);河北省自然科学基金(E2021208006,E2021208017,E2019208308)。

摘　　要：为实现废钢预热型超高功率电弧炉各种钢铁料的合理配比,以配料成本最低为目标,建立了配料和合金化优化模型。同时,为了优化冶炼参数和各项消耗指标,对物料平衡和热平衡进行了计算。物料平衡计算结果显示,金属收得率为96.4%,等效石灰消耗量为34.1 kg/t钢,与实际生产指标相符;根据实际冶炼平均总电耗为360 kW·h/t钢进行的热量平衡计算结果显示,熔化期的热量损失占全部热量损失的80%以上,主要原因是电弧辐射散热太多。通过提前造泡沫渣埋弧加热减少辐射散热,以及调整竖井内废钢的布料方式使高温烟气与废钢充分换热,提高废钢预热温度,可将电耗控制在340 kW·h/t钢以下。In order to achieve reasonable mixing of various steel materials in scrap preheating ultra-high-power electric arc furnace and to minimize the cost of mixing,an optimization model of mixing and alloying is established.At the same time,the material balance and heat balance are calculated in order to optimize smelting parameters and consumption indexes.The material balance results show metallic yield is 96.4%and equivalent lime consumption 34.1 kg per ton,which are consistent with the actual production indicators.The results of the heat balance calculations performed according to the actual smelting average total power consumption of 360 kW·h per ton,the heat loss during melting period accounts for more than 80%of the total heat loss.The main reason is that arc radiation radiates too much heat.Through submerging arc heating of foam slag in advance to reduce radiative heat dissipation,adjusting the distribution of scrap steel in the shaft to fully exchange high temperature flue gas and scrap steel,improving the scrap preheating temperature to control the power consumption of 360 kW·h per ton.

关 键 词：超高功率 废钢 预热 直流电弧炉 配料优化模型 物料平衡 热平衡 

分 类 号：TG142.1[一般工业技术—材料科学与工程]