摘要
采用蒸汽喷射磨在蒸汽温度>260℃、压力0.5~0.8 MPa的条件下对循环硫化床锅炉(CFB)粉煤灰进行超细化研究。通过对样品粒径、组分、烧失量等指标以及XRD和电镜谱图的分析,考察了对CFB灰超细化的影响,确定了最佳工艺条件。研究表明,超细化可以大幅减少包覆的CaO颗粒,明显降低CFB灰中CaO的含量,为提高CFB灰在建材中的直接应用提供了可行方案。
A steam jet mill is used to study the superfineness of circulating fluidized bed boiler(CFB)fly ash when the steam temperature is greater than 260℃and the pressure is between 0.5~0.8 MPa.Through the sample size,composition,ignition loss,XRD and SEM are analyzed,the influence on the ultrafine CFB ash is investigated,and determined the best process conditions are determined.The research shows that ultra-fineness can greatly reduce the coated CaO particles,significantly reduce the total amount of CaO in CFB ash.A feasible solution for improving the direct application of CFB ash in building materials is provided.
作者
董建勋
洪雪莲
王琛
DONG Jianxun;HONG Xuelian;WANG Chen(Henan Pingmei Shenma Environmental Protection and Energy Saving Co.Ltd , Pingdingshan 467000 , China;Nylon Chemical Industry Research Institute , Shenma Industry Co.Ltd , Pingdingshan 467000 ,China;State Key Laboratory of Coking Coal Exploitation and Comprehensive Utilization,Pingdingshan 467000 , China;Chinese People′s Liberation Army Information Engineering University , Zhengzhou 450002 , China)
出处
《河南化工》
CAS
2021年第4期17-20,共4页
Henan Chemical Industry
基金
平顶山市重大科技专项(创新示范专项)(2020ZD07)。
关键词
循环硫化床锅炉粉煤
资源化利用
超细化
蒸汽喷射磨
fly ash of circulating fluidized bedboiler
resource utilization
superfine
steam jet mill
