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过去,人们曾研究并运用以燃料为主的废钢预热炉来进行废钢预热。60年代这种装置炉在欧州的许多钢厂得到了推广。它的主要作用在于预热后的废钢对于稳定电弧,提高电力输入效率和促使单位电耗下降有着积极的效果,并缩短了每个炉次的冶炼时间。特别当预热温度接近800℃时,冶炼时便不会再有任何废钢粘结等问题发生。然而,从七十年代开始,由于越来越多的超高功率电弧炉投入运行和各种炉外精炼炉和富氧技术的运用,而当时石油价格飞涨,使得人们不得
In the past, scrap-steel preheating was studied and applied to fuel-based scrap preheating furnaces. In the 1960s this furnace was popularized in many mills in Europe. Its main role is that the preheated scrap has a positive effect on stabilizing the arc, improving the power input efficiency and contributing to the reduction of unit power consumption, and shortening the smelting time per furnace. Especially when the preheating temperature is close to 800 ℃, there will not be any problems such as scrap bonding during smelting. However, since the 1970s, as more and more ultra-high power electric arc furnaces were put into operation and a variety of furnaces and oxygen enrichment technologies were used, soaring oil prices made it impossible for people