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前言武钢高炉炉渣中的Al_2O_3含量较高,其MgO含量在烧结矿不加白云石时一般小于3％,炉渣流动性差,有时甚至渣铁不分,给生铁产量和质量带来很不利的影响。解决以上问题的关键,在于提高炉渣中的MgO含量以改善炉渣性能。通过对1972年9月下旬烧结矿加白云石的高炉冶炼结果(炉渣中MgO含量从5~6％提高到9~10％左右)和试验室测定数据的分析可以肯定,高氧化镁渣(10~12％)对改善生铁质量,提高炉渣流动性,减少风渣口破损有显著作用。
Preface Wuhan Iron and Steel blast furnace slag in the high content of Al 2 O 3, the MgO content in the sinter is generally less than 3% without dolomite, slag flow is poor, and sometimes even regardless of slag iron, pig iron production and quality have a very adverse impact. The key to solve the above problems is to improve the MgO content in the slag to improve the slag performance. Through the analysis of blast furnace smelting results of sinter plus dolomite in late September 1972 (the MgO content in slag increased from 5 ~ 6% to 9 ~ 10%) and laboratory measurement data, it is certain that high magnesia slag (10 ~ 12%) have a significant effect on improving the quality of pig iron, improving the slag fluidity and reducing the damage of the slag mouth.