SiO_(2)含量对镁质熔剂性球团回转窑结圈的影响  

Effect of SiO_(2) content on ring formation in magnesia flux pellet rotary kiln

作　　者：黄绍翔 田铁磊 王子昂 张玉柱 龙跃 郭宗恒 刘连继 Huang Shaoxiang;Tian Tielei;Wang Ziang;Zhang Yuzhu;Long Yue;Guo Zhongheng;Liu Lianji(North China University of Science and Technology;Hebei Key Laboratory of Modern Metallurgical Technology;HBIS Group Tangsteel Company)

机构地区：[1]华北理工大学冶金与能源学院 [2]河北省现代冶金技术重点实验室 [3]河钢集团唐钢公司

出　　处：《冶金能源》2025年第2期14-19,共6页Energy For Metallurgical Industry

基　　金：国家自然科学基金区域创新发展联合基金资助项目(U20A20271);河北省中央引导地方科技发展资金项(246Z4002G)。

摘　　要：围绕镁质熔剂性球团矿回转窑结圈问题,以唐钢提供的矿粉为原料进行了焙烧实验,研究了SiO_(2)含量对球团粉末压块的抗压强度和软熔特性的影响,分析了不同SiO_(2)含量的球团粉末压块的微观矿相结构及元素组成,解析了SiO_(2)对球团回转窑结圈物的形成的影响。结果表明:随着压块中SiO_(2)含量不断增加,压块的抗压强度逐渐提高,压块的DT、ST均降低;同时赤铁矿粉末和熔剂产生的液相增多,促进赤铁矿在回转窑中扩散和连晶,从而加固了回转窑的结圈。Focusing on the problem of ring formation in rotary kiln of magnesia fluxes pellets,roasting experiments were carried out with the ore powder provided by Tangshan Steel as the raw material,and the effects of SiO_(2) content on the compressive strength and soft fusible characteristics of pellet powder briquettes were investigated,the micro-mineral structure and elemental composition of pellet powder briquettes with different contents of SiO_(2) were analysed,and the effect of SiO_(2) on the formation of circling objects in the pellet rotary kiln was resolved.The results show that:with the increasing content of SiO_(2) in the briquettes,the compressive strength of the briquettes gradually increased,and the DT and ST of the briquettes decreased;At the same time,the liquid phase produced by the hematite powder and the melt increased,which promotes the diffusion of hematite and the continuous crystallisation of the hematite in the rotary kiln,and thus strengthens the circling of the rotary kiln.

关 键 词：SiO_(2)含量 镁质熔剂性球团 回转窑结圈 抗压强度 

分 类 号：TF046.6[冶金工程—冶金物理化学]