为改善球团矿的冶金性能，进行了含MgO球团矿的冶金性能试验研究，分析了不同MgO添加方式造球工艺的效果。结果表明，在合理的MgO添加方式下，对含MgO球团矿，氧化镁含量由0.6%提高到1.8%后，球团矿RDI+3.15由62.2%增加到约75%，还原度RI由34%增加到45%～53%（900℃还原1h），还原膨胀指数RSI（还原度40%）由23%降低到约20%，且软熔温度明显提高，冶金性能改善。认为提高氧化镁含量的方式应当是菱镁石或含MgO精矿粉，避免添加白云石。
In order to improve the metallurgical properties of pellet, the experiments that MgO was put into the pellet were tested. And the influences of MgO adding method on technical of ability of ball were discussed. The results show as follows: With reasonable MgO additive method, when the MgO content increases from 0.6% to 1.8%, the low temperature reducible disintegration index (RDI+3.15) increases from 62.2% to 75%, the reducibility index (RI) increases from 34% to 45%-53% (1h, 900℃), the reducible swelling index (RSI) decreases from 23% to 20%(RI=40%), and the softening and melting temperature range of pellet can also be increased. To enhance MgO content, the magnesite and iron ore concentrate should be used, but not dolomite.
参考文献
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| [2] | 周国凡,杨福.添加MgO对球团矿成球性能及强度的影响[J].钢铁研究,2009,37(2):10- |
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