基于转底炉工艺的造球参数优化研究  

Optimization study on pelletizing parameters based on rotary hearth furnace process

作　　者：李卫国 李强[2] 林培芳 佘雪峰[2] 吴佩佩 石建红 王静松[2] LI Weiguo;LI Qiang;LIN Peifang;SHE Xuefeng;WU Peipei;SHI Jianhong;WANG Jingsong(Guangdong Huaxin Environmental Protection Technology Co.,Ltd.,Shaoguan 512123,China;State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China;Baowu Group Environmental Resources Technology Co.,Ltd.,Shanghai 201900,China)

机构地区：[1]广东华欣环保科技有限公司,韶关512123 [2]北京科技大学绿色低碳钢铁冶金全国重点实验室,北京100083 [3]宝武集团环境资源科技有限公司,上海201900

出　　处：《江西冶金》2024年第2期141-146,共6页Jiangxi Metallurgy

基　　金：广东省省级科技计划项目(GDKJ2020002)。

摘　　要：转底炉直接还原工艺是目前处理冶金粉尘的典型工艺,能充分回收利用粉尘中的铁、碳和锌等有用组分。本研究首先对粉尘的化学成分和粒径进行了分析与检测,再基于圆盘造球的方法,研究了水分对生球爆裂温度的影响,优化了转底炉的造球参数。结果表明,生球干燥后的水分应控制在4.0%以下,造球时间、黏结剂含量和碳氧质量比对成球率和球团的性能影响显著,当造球时间为12 min、膨润土含量为3.0%、碳氧质量比为0.7时,球团的性能最好,球团合格率为60.32%。The direct reduction process in rotary hearth furnaces is a common method for treating metallurgical dust.This process can fully recycle useful components such as Fe,C and Zn from the dust.The paper analyzes the chemical composition and particle size of the dust and investigates the impact of moisture on the burst temperature of green pellets produced through disc pelletizing.The study analyzed the impact of pelletizing time,binder content,and mass ratio of carbon to oxygen(C/O)on pelletizing rate,and pellet performance,and optimizes the pelletizing parameters of the rotary bottom furnace.The results show that the moisture content of green pellets after drying should not exceed 4.0%.Pelletizing time,binder content,and C/O have a significant impact to the pelletizing rate and pellet quality.Optimal pellet quality,with a qualified rate of 60.32%,is achieved when the pelletizing time is 12 min,the bentonite content is 3.0%,and the C/O is 0.7.

关 键 词：转底炉 爆裂温度 造球时间 黏结剂含量 碳氧质量比 

分 类 号：TF124[冶金工程—粉末冶金]