不同级数烧结电场除尘灰的理化特性分析  

Analysis on physicochemical properties of sintered electric field fly ash with different stages

作　　者：段毅 包向军 徐俊超 黄静如 DUAN Yi;BAO Xiangjun;XU Junchao;HUANG Jingru(School of Energy and Environment,Anhui University of Technology,Ma'anshan 243002,Anhui,China)

机构地区：[1]安徽工业大学能源与环境学院,安徽马鞍山243002

出　　处：《烧结球团》2022年第2期96-100,109,共6页Sintering and Pelletizing

基　　金：安徽省重点研究与开发计划资助项目(812233552051);安徽高校自然科学研究项目(KJ2020A0267)。

摘　　要：本文以1~4级电场除尘灰作为研究对象,对水洗处理后原始灰样的粒度分布、元素组成、化学组分的晶体结构、可溶盐组分的存在形式等进行测试,并分析析晶形貌,讨论不同电场除尘灰化学成分、比电阻的变化规律。结果表明:除尘灰中的Fe主要以Fe_(2)O_(3)的形式存在、K主要以KCl形式存在,还有少量的NaCl存在;当电场级数从1级增加至4级时,除尘灰的+100μm的粒级占比从37.58%降低至2.13%,比电阻从3.84 kΩ·cm增大至101.1 kΩ·cm;水洗去除了4级电场除尘灰中4.51%的K和2.05%的Na,粉尘比电阻从101.1 kΩ·cm降低至13.41 kΩ·cm。The 1~4 grade electric field fly ash is taken as the research object in this paper,the particle size distribution,elemental composition,crystal structure of chemical components,and the presence form of soluble salt components of the original ash samples after water washing treatment are tested,and the crystallization morphology is analyzed to discuss the variation law of chemical composition and specific resistance of different electric field flash ash.The results show that the Fe in the fly ash is mainly in the form of Fe_(2)O_(3),K is mainly in the form of KCl,and a small amount of NaCl is also present;when the number of electric field stages increases from 1 to 4,the percentage of +100μm particle size in the fly ash decreases from 37.58% to 2.13%,and the specific resistance increases from 3.84 kΩ·cm to 101.1 kΩ·cm;when 4.51% K and 2.05% Na are removed by water washing from the 4-stage electric field fly ash,the specific resistance of dust decreases from 101.1 kΩ·cm to 13.41 kΩ·cm.

关 键 词：烧结除尘灰 理化特性 可溶盐 比电阻 

分 类 号：TF046.4[冶金工程—冶金物理化学] TF09