固硫灰中游离CaO分布与消解研究
Research on Distribution and Elimination of Free Lime in CFBC Fly Ssh
陈仕国 1王群英 1刘战礼 1宋明光 1魏雅娟 1刘涛 2李勇辉 1二宫善彦3
作者信息
- 1. 华电电力科学研究院,杭州310030
- 2. 阜新金山煤矸石热电有限公司,阜新123061
- 3. 中部大学,日本487-8501
- 折叠
摘要
为了提高固硫灰在水泥和混凝土中的利用率,采用化学分析法和SEM-EDS微观分析法分析了固硫灰中游离CaO的分布规律,并对比分析了高温水浸法和常温陈化法对游离CaO的消解实验效果.实验结果显示:在研究的固硫灰中,80％的游离CaO分布在粒径小于75 μm的颗粒中;常温陈化法消解游离CaO的效果优于高温水浸法,陈化7d时游离CaO的含量降低至1.0％以下.
Abstract
With chemical analysis and micro analysis methods,the distribution of free lime in CFBC fly ash,and the ways (heat treatment and preliminary humidification) for elimination of free lime to improve the utilization of CFBC fly ash in cement and concrete were investigated.The research results showed that more than 80％ of free lime appeared below the particle size 75 μm of CFBC fly ash in this test.Besides,preliminary humidification was proved to be more beneficial for eliminating free lime in CFBC fly ash,and the content of free lime reduced to 1.0％ with the humidification time of 7 days.
关键词
循环流化床/固硫灰/游离CaO/体积稳定性Key words
circulated fluidized bed combustion/CFBC fly ash/free lime/volume stability引用本文复制引用
基金项目
杭州市科技发展计划重大科技创新专项(20132011 A05)
出版年
2016
NETL
NSTL
维普
万方数据