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在装料量为8吨的小型电炉上进行了冶炼各种碳钢的缩短还原期的研究。还原期缩短到70分钟(低碳钢冶炼中还增加矽铁粉加入量和提早加入时间)的结果是:脱氧、脱硫符合要求,钢中非金属夹杂物和氮的含量显著减少,并提高炉子生产率约7%。从而指出了以电炉冶炼碳钢时还原期的时间和脱氧制度应按钢中碳含量的不同而有所区别。并指出中、高碳钢冶炼中还原期缩短到50分钟左右的可能性。此外还观察到还原期末[S]/[O]=1.2—2.2的关系。
In a charge of 8 tons of small electric furnace smelting all kinds of carbon steel reduction reduction period of research. Reduction period shortened to 70 minutes (low-carbon steel smelting also increase the amount of silicon and iron added early) is the result: deoxidation, desulfurization meet the requirements of steel non-metallic inclusions and nitrogen content decreased significantly, and improve the furnace Productivity of about 7%. It points out that the time of reduction period and the deoxidation system should be different according to the carbon content in steel when smelting carbon steel with electric furnace. And pointed out that the reduction of medium and high carbon steel smelting reduction period to 50 minutes or so the possibility. In addition, the relationship between [S] / [O] = 1.2-2.2 at the end of the reduction period was also observed.