通过试验研究了提高天然块矿在高炉中使用比例的可行性.实验室研究结果表明:天然块矿与烧结矿在高炉高温区发生的交互反应能够明显改善天然块矿自身软熔性能差的缺点,且利用这一反应性可以优化块矿的搭配模式和调整块矿间的使用比例;在适宜的块矿搭配模式和块矿间使用比例下,天然块矿使用比例提高到20%以上时,综合炉料仍有较好的软化熔滴性能,能够满足高炉冶炼的要求.
The feasibility of increasing proportion of lump ores in blast furnace was investigated. The lab results show that self-softening and melting properties of the lump ores were dramatically improved by interaction between sinters and lump ores found in the experiments. Furthermore, the collocation pattern of lump ores and ratio between lump ores were optimized according to interaction. When the proportion of lump ores was up to over 20% at the ex-cellent collocation pattern and appropriate ratio, the burdens still conformed to the requirements of ironmaking.
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