烧结机头除尘灰理化性能及磁性特征分析  

Physicochemical properties and magnetic characteristics of electrical precipitator dust on the head of sintering machine

作　　者：付本全[1,2] 黄建阳[2] 吴英[3] 汤静芳[3] 

机构地区：[1]武汉钢铁(集团)公司研究院资源与环境研究所,湖北武汉430080 [2]武汉钢铁(集团)公司(北京)新材料研究中心,北京100012 [3]武汉钢铁(集团)公司股份公司烧结厂,湖北武汉430080

出　　处：《武汉科技大学学报》2014年第4期254-257,共4页Journal of Wuhan University of Science and Technology

基　　金：国家高技术研究发展计划(863)资助项目(2012BAC02B00)

摘　　要：以某烧结厂烧结机头除尘灰为研究对象,采用SEM、XRD和化学分析等对其进行理化性能分析,并通过磁选实验对其磁性特征进行了研究。结果表明,烧结机头除尘灰的理化性能随其所在电场不同而产生变化,除尘灰中Pb、Zn、Cu重金属与K、Na碱金属含量明显高于成品烧结矿,除尘灰中Fe主要以Fe2O3形态存在,Pb主要以PbCl2和Pb2O2Cl形态存在,K和Ca分别以KCl和CaCl2形态存在,干法磁选实现了除尘灰中部分铁元素回收。The physical and chemical properties of the electrical precipitator dust on the head of the sintering machine in a certain sinter plant were analyzed by SEM ,XRD and chemical analysis ,and the dust’s magnetic characteristics were investigated by magnetic separation experiments .The results show that the physical and chemical properties of the dust vary with the electrical field in which it is and the contents of Pb ,Zn ,Cu ,K and Na in the dust are higher than those in the finished sinter .It is also found that in the dust ,Fe exists in the form of Fe2O3 ,Pb in the form of PbCl2 and Pb2 O2 Cl , and K and Ca in the form of KCl and CaCl2 .And dry magnetic separation can recover a certain amount of Fe in the dust .

关 键 词：烧结 除尘灰 理化分析 磁性特征 

分 类 号：X757[环境科学与工程—环境工程]