不同含镁添加剂对球团矿工艺参数及质量的影响

 MgO对高铁低硅烧结中烧结矿的质量有不利影响，但其可以改善球团矿的冶金性能。因此，不在烧结矿而在球团矿中添加MgO，可在改善烧结矿质量的同时提高球团矿的冶金性能。不同的含镁熔剂对球团工艺参数和性能影响不同。通过试验研究了在高铁低硅条件下，白云石、蛇纹石、硼泥和镁质添加剂等4种含镁添加剂对球团造球，焙烧工艺及对球团矿物化性能和冶金性能的影响。试验结果显示，镁质添加剂对提高球团矿MgO含量、控制低硅球团矿还原膨胀率、改善球团矿还原度和熔滴性效果最好。

Effect of Different Magnesium Additives on Process Parameters and Pellet Quality

MgO has negative effect on the quality of sinter with high iron and low silica. However, MgO can improve metallurgical properties of pellet. Therefore, adding of MgO into pellet instead of into sinter can optimize the quality both of sinter and of pellet. Different magnesium additives have different influence on pellet process parameters and quality due to their varied physicochemical characteristic. The effect of different magnesium additives such as dolomite, serpentine, boron mud and magnesia on pelletizing, firing, physicochemical and metallurgical properties of pellet under high iron and low silica condition were investigated experimentally. The most effective additive for improving the quality of pellet is gained by comparison analysis, which lays foundation for industrial production of magnesium pellet.