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近十多年来国内外的生产实践证明,高炉精料的重大成就之一,是自熔性烧结矿的使用。随着高炉冶炼的强化,对烧结矿的要求,不仅只限于自熔性,其机械强度、冶金性能等方面也有着愈来愈高的要求。但从国内外烧结生产实践来看,要获得机械强度高、冶金性能良好的自熔性烧结矿,仍然是个探索途径的问题。例如:要从高炉配料中全部去掉石灰石,烧结矿的碱度必须维持较高(一般在1.2以上),这种烧结矿其强度、含硫量(特别是配用高硫矿时)等都与碱度要求存在有一定的矛盾的。在石钢的生产条件下,为了适应高炉冶炼不同铁种的要求,早已正
Nearly a decade of production practice at home and abroad have proved that one of the major achievements of blast furnace concentrate is the use of self-fluxing sinter. With the strengthening of blast furnace smelting, the requirement for sinter is not only confined to self-fluxing, but also has higher and higher requirements on its mechanical strength and metallurgical properties. However, sintering practice at home and abroad point of view, to obtain high mechanical strength, good self-fluxing sinter metallurgical properties, is still a way to explore. For example, to remove all limestone from blast furnace ingredients, the alkalinity of the sinter must be maintained at a high level (generally above 1.2). The strength and sulfur content of this sinter (especially with high-sulfur ore) Alkalinity requirements there is a certain degree of contradiction. In the stone production conditions, in order to adapt to blast furnace smelting different iron species requirements, has long been positive