铁矿烧结低热值点火富氧预热技术试验研究  

Experimental Research on Oxygen Enriched Preheating Technology for Low Heat Value Ignition of Iron Ore Sintering

作　　者：周浩宇 王赛辉[2] 甘敏 李谦[1,2] 王业峰 刘前 陈思墨 ZHOU Haoyu;WANG Saihui;GAN Min;LI Qian;WANG Yefeng;LIU Qian;CHEN Simo(National Engineering Research Center of Sintering and Pelletizing Equipment System,Changsha 410205,China;Zhongye Changtian International Engineering Co.,Ltd,Changsha 410205,China;School of Minerals Processing&Bioengineering,Central South University,Changsha 410083,China)

机构地区：[1]国家烧结球团装备系统工程技术研究中心,湖南长沙410205 [2]中冶长天国际工程有限责任公司,湖南长沙410205 [3]中南大学资源加工与生物工程学院,湖南长沙410083

出　　处：《工业炉》2021年第2期1-5,共5页Industrial Furnace

基　　金：国家自然科学基金面上项目(51974371);湖南省自然科学基金项目(2020JJ5994)。

摘　　要：本文对低热值燃料点火工况下的富氧预热烧结杯进行试验,研究空气过剩系数、富氧浓度、空气预热温度等因素对烧结点火关键参数的影响。结果表明:随着空气过剩系数的增加,烧结质量参数等先增加后减小;随着空气预热温度的升高,点火最高温度、废气温度逐渐升高,烧结质量参数先升高后降低;随着富氧浓度的升高,点火最高温度、废气温度逐渐升高,烧结质量参数先升高后降低。低热值燃气点火过程最优工艺参数为空气过剩系数1.4,富氧浓度50%,空气预热温度400℃。The experiment of oxygen enriched preheating sintering cup with low calorific value fuel was carried out,and the effects of excess air coefficient,oxygen enriched concentration,air preheating temperature and other factors on the key parameters of sintering ignition were studied.The results show that with the increase of air excess coefficient,sintering quality parameters increase firstly and then decrease;with the increase of air preheating temperature,the highest ignition temperature and exhaust gas temperature gradually increase,while the sintering quality parameters first increase and then decrease;with the increase of oxygen concentration,the highest ignition temperature and exhaust gas temperature gradually increase,while the vertical sintering speed,sintering yield,sintering drum strength and sintering utilization coefficient first increase and then decrease.The optimal process parameters in the ignition process of low heat value gas are air excess coefficient 1.4,oxygen concentration 50%,air preheating temperature 400℃.

关 键 词：富氧烧结 铁矿石 烧结杯试验 正交试验 

分 类 号：TF046.4[冶金工程—冶金物理化学]