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.
出处
《宝钢技术》
CAS
1997年第5期41-46,共6页
Baosteel Technology
关键词
电弧炉炼钢
铁水
电耗
原料
脱碳
Electric arc furnace(EAF) Molten iron Decarburization rate Oxygen consumption Electric energy consumption
