分层供热均热低碳烧结方法及基础试验研究  

Method of low-carbon sintering with uniform heat and basic experimental research based on layered heating

作　　者：叶恒棣[1] 周浩宇[1] 朱蓉甲 魏进超[1] 王兆才[1] 甘敏[2] YE Hengdi;ZHOU Haoyu;ZHU Rongjia;Wei Jinchao;WANG Zhaocai;GAN Min(Zhongye Changtian International Engineering Co.,Ltd.,Changsha 410205,Hunan,China;School of Minerals Processing Bioengineering,Central South University,Changsha 410083,Hunan,China)

机构地区：[1]中冶长天国际工程有限责任公司,湖南长沙410205 [2]中南大学资源加工与生物工程学院,湖南长沙410083

出　　处：《烧结球团》2023年第5期43-50,58,共9页Sintering and Pelletizing

基　　金：湖南省自然科学基金资助项目(2022JJ40884)。

摘　　要：文章通过研究烧结料层热量产生、消耗、传递、蓄积的规律及影响因素,揭示了能源相态、温度区间及变化梯度、微观气氛与烧结成矿(产、质量)的关系,建立了烧结料层均热数学模型及求解分层补热的数学算法,开发了基于基准配碳加分层补热实现均热低碳富氢烧结的方法,并以中天钢铁原料条件为对象开展了小试试验。试验结果表明:应用分层供热烧结方法后,烧结速度、烧结成品率、转鼓强度、利用系数等指标较基准工况均略微上升,总配碳量从4.00%降至3.25%。By studying the laws and influencing factors of heat generation,consumption,transfer and accumulation in the sinter bed,the relations among energy phase,temperature range,change gradient,microscopic atmosphere and sintering mineralization(production and quality)are revealed,a mathematical model of sinter bed with uniform heat and a mathematical algorithm for solving layered heat supplementation are established,a method to achieve low-carbon hydrogen-rich sintering with uniform heat based on benchmark carbon distribution plus layered heat supplementation is developed,and a small-scale test experiment based on the raw material conditions of Zhongtian Iron and Steel is carried out.The results show that after applying the layered heating sintering method,such indicators as sintering speed,sintering yield,tumbler strength,and utilization coefficient increase slightly compared with the benchmark working conditions,and the total carbon formulation decreases from 4.00%to 3.25%.

关 键 词：烧结 厚料层 分层供热 均热低碳烧结 富氢烧结 

分 类 号：TF046.4[冶金工程—冶金物理化学]