硅酸盐通报2018，Vol.37Issue(5)：1563-1567,5.
流化床法除碳对微硅粉性能影响
Effect of Removing Carbon by Fluidized Bed Method on Properties of Silica Fume
摘要
Abstract
Fluidied bed method was used to removing carbon from silica fume .The optimal process condition was the reaction temperature of 800 ℃ and reaction time of 3 h through single factor experiments.In this condition, the content of silicon dioxide in silica fume increased from 75.64％ to 83.16％, the content of free carbon in silica fume drops from 4.14％ to 0.15％, removal rate can reach 96.38％.The silica fume before and after fluidization were analyzed by X -ray powder diffraction, scanning electronic microscopy, brunauer-emmett-teller and other tests.The results show that the silica fume after fluidization is still non-crystalline structure and the particles are smooth and have a regular spherical shape.After being fluidized,the particle size of silica fume is increased , the specific surface area is slightly reduced because of fine particles are taken out in the process of fluidization .The fluidity of silica fume after fluidization is better than that before fluidization , it is more conducive to industrial production.关键词
流化/微硅粉/除碳/性能Key words
fluidization/silicon fume/carbon removal/property分类
通用工业技术引用本文复制引用
侯思懿,铁生年,刘延杰,彭毛卓玛..流化床法除碳对微硅粉性能影响[J].硅酸盐通报,2018,37(5):1563-1567,5.基金项目
青海省重点实验室发展专项资金(2015-Z-Y02,2016) （2015-Z-Y02,2016）
材料复合新技术国家重点实验室(武汉理工大学)开放基金(2017-KF-4) （武汉理工大学）
