电弧炉兑铁水冶炼工艺的试验研究  

Laboratory Test on Charging Molten Iron into Electric Arc Furnace

作　　者：姜周华[1] 芮树森 刘喜海 肖玉光 张颖[1] 张妙法[2] 钟志敏[2] 汪钺强[2] 杨仕明[2] 王涛[2] 

机构地区：[1]东北大学 [2]宝山钢铁(集团)公司

出　　处：《宝钢技术》1997年第5期41-46,共6页Baosteel Technology

摘　　要：在１８０ｋＶＡ实验型直流电弧炉上进行了兑入０～５０％铁水冶炼工艺的试验研究。结果表明，每加入１０％的铁水可使冶炼时间缩短约７％，电耗降低６％。吨钢氧气消耗量应随铁水比例的增加而增加，当铁水比例为３％时适宜值为２５ｍ３／ｔ。在高碳范围内熔池脱碳反应速度与供氧强度和氧气利用率成正比，而提高吹氧压力可以提高氧气利用率。在本试验条件下高碳范围内脱碳速度大于０．１％／ｍｉｎ，明显高于传统电炉。另外，兑铁水方法不同冶炼指标也有差异，根据厂家的实际情况合理选择兑铁水方法也十分重要。Tests with varying hot metal ratios from 0 to 50% total amount of charge material were carried out in a laboratory scale electric arc furnace(EAF) with 180kVA transformer.The results showed that the power on time would be shortened by 7% and the electric energy consumption reduced by 6% with each 10% addition of hot metal into EAF.The oxygen input would be increased with the rising of hot metal ratio, and the reasonable value of oxygen consumption would be 25m 3/t when hot iron amounted to 3%. The decarburization rate in bath was proportional to the intensity of oxygen supply and the utilization ratio of oxygen was enhanced with the oxygen pressure rising.The decarburization rate in the test was higher than 0.1%/min in the range of high carbon content in bath,much higher than that in conventional EAF.In addition,the mode of hot metal charging should be carefully chosed by considering the practical conditions in a given steel plant because it can strongly influence the main production indexes.

关 键 词：电弧炉炼钢 铁水 电耗 原料 脱碳 

分 类 号：TF741.5[冶金工程—钢铁冶金]