化工学报2019，Vol.70Issue(8)：3177-3187,11.DOI:10.11949/0438-1157.20190001
铁矿石烧结中混合料特性对火焰烽面与烧结性能的影响机理研究
Effect of sinter mix properties on the flame front properties and iron ore sintering performance
摘要
Abstract
In this paper, the pilot-scale sintering cup test and the comprehensive sintering model were combined to analyze the effects of mixture characteristics (sintering alkalinity, coke and moisture addition) on flame kneading properties and sintering properties. Previously developed and validated sintering sub-models have been integrated in this work. Simulations were carried out based on 125 cases simulating a wide range of sintering conditions. Thermochemical modelling using FactSage provided useful information to improve the melting and solidification sub-model and provide greater insights into the state of the material in the flame front. Modelling studies showed that the maximum or minimum values of flame front speed, yield, coke rate and productivity appear when the basicity and coke addition change continuously. Under the sintering conditions of present work, the condition for maximum productivity is basicity 2.0, moisture level 7.7%, coke level 6.4%. The condition for minimum coke rate is basicity 2.0, moisture level 6.5%, coke level 6.4%. Obviously, the optimum productivity and coke rate conditions are different. The actual operating conditions will depend on the objective of a sinter plant.关键词
焦炭燃烧/火焰烽面/填充床/传热/数值模拟Key words
coke combustion/ flame front/ packed bed/ heat transfer/ numerical simulation分类
矿业与冶金引用本文复制引用
赵加佩,Chin Eng Loo,周昊,周明煕,王甫,袁金良..铁矿石烧结中混合料特性对火焰烽面与烧结性能的影响机理研究[J].化工学报,2019,70(8):3177-3187,11.基金项目
国家自然科学基金青年科学基金项目(51706113, 51706112) （51706113, 51706112）
浙江省基础公益研究计划项目(LGG19E060003) （LGG19E060003）
宁波市自然科学基金项目(2018A610178) （2018A610178）
