在本文中,我们报告了11M~3高炉冶炼包头铁矿时炉料样品包括矿石、初渣、终渣的岩相分析及初渣的化学分析结果,并结合温度测定数据,画出了高炉中等温线及各区域的分市情况,以及各区域炉料中的矿物组成。根据以上实验结果,讨论了冶炼包头铁矿时的初渣形成机理,并指出初渣的性质与一般酸性铁矿不同,此点对高炉的顺行有利。
The results of investigation of the behaviour of fluorine in blast-furnace smelting have beenreported in a series of previous papers. The purpose of the present research is to investigatethe slag-forming processes in a 11 M~3 blast-furnace smelting Pao-Tou iron ore. Petrographical examinations supplemented by White test studies show that the chief mineralconstituents present in the primary slag are calcium oxide, fluorite and wustite. From a comparison of the slag-forming processes in a 11 M~3 blast-furnace smelting Pao-Touiron ore with that smelting an ordinary acid ore, a new mechanism for the formation of theprimary slag in smelting the former ore has been proposed. In addition, it has been found thatthe plastic region in smelting Pao-Tou iron ore is smaller than that in the usual case, thereby,considerably facilitating the driving of the blast-furnace by improving the penetrability of thecharge column.
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