一、前言 MgO具有良好的高炉冶炼特性,现正逐渐为人们所认识,高炉渣中的MgO过去认为5～6%合适,如今已普遍地把MgO提高到8～10%以上。涞钢高炉渣中MgO高达24～26%,过去认为炉渣中MgO超过20%时,炉渣过粘,脱硫能力极低,无法正常冶炼。涞钢渣中那么高的MgO(配料计算高达29～30%MgO)被看作高炉冶炼的禁区。可是涞钢100m~3高炉多年生产的实践表明:渣中25%左右MgO不仅正常冶 First, the preface MgO has a good blast furnace smelting properties, is gradually recognized by the people, blast furnace slag MgO 5 ~ 6% in the past that is appropriate, and now the general increase of MgO to 8 to 10%. The blast furnace slag MgO as high as 24 ~ 26%, in the past that the slag MgO more than 20%, the slag sticky, very low desulfurization capacity, can not be normal smelting. As high as MgO in slags (calculated as 29-30% MgO) is considered a forbidden zone for blast furnace smelting. However, the practice of steel 100m ~ 3 blast furnace for many years shows that about 25% slag is not only normal metallurgical