K和Na对白云鄂博铁精矿烧结连晶特性的影响  

Effect of K and Na on Sinter Crystal-Intensity of Baiyunebo Iron Ore Concentrates

作　　者：罗果萍[1,2] 贾晓斌[1] 吴胜利[2] 段祥光[3] 郝志忠[3] 

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古包头014010 [2]北京科技大学冶金与生态工程学院,北京100083 [3]包头钢铁集团公司炼铁厂,内蒙古包头014010

出　　处：《钢铁研究学报》2014年第3期32-34,62,共4页Journal of Iron and Steel Research

摘　　要：通过微型烧结试验,研究了氟的质量分数为0.5%时,不同K、Na含量对白云鄂博铁精矿烧结连晶特性的影响。结果表明,在氟含量较低时,烧结过程中不易生成低强度枪晶石,随着铁精矿中K、Na含量的增加,烧结矿中液相量和硅酸盐玻璃相增加,致使气孔分布不均匀,阻碍了赤铁矿连晶的发展,导致烧结矿连晶强度降低。Crystal-intensity of sinter produced by Baiyunebo iron ore concentrates with different content of K and Na when the mass percent of fluorin is 0.5% was studied by using mini-sintering test device. The result shows that the sintering process is not easy to generate a low intensity cuspidine when fluorin content is low. As K, Na con- tent increases in the iron ore concentrates which resulting in silicate glass phase and liquid phase amount increases in the sinter, thus cause the distribution of stomata uneven, hindering the development of hematite crystal and re- suiting the crystal strength of the sinter became lower.

关 键 词：铁精矿 烧结 氟含量 连晶特性 

分 类 号：TF046.4[冶金工程—冶金物理化学]