硅酸盐通报2013，Vol.32Issue(1)：19-24,6.
流化床法除去微硅粉游离碳工艺研究
Research on Remove Free Carbon in Silica Fume by Fluidized Bed
摘要
Abstract
TIn this paper, the fluidized bed was used as the reaction equipment, we could change the flow velocity of gas in it to enable the silica fume to reach its best fluidized state, by comparing the carbon removal in silica fume both in air atmosphere and oxygen atmosphere, it adjusted the reaction temperature and reaction time to seek its optimal values. The result show; under oxygen atmosphere, 700 ℃ of reaction temperature, 3.0 h of reaction time, the content of free carbon in silica fume dropped from 1.25% to 0.05% , the content of loss on ignition dropped from 1.25% to 0.92% , the content of silicon oxide increased from 81.62% to 85. 92%. under air atmosphere, 700 ℃ of reaction temperature, 3. 0 h of reaction time, the content of free carbon in silica fume dropped from 1.25% to 0.027% , the content of loss on ignition dropped from 1. 25% to 0. 99% , the content of silicon oxide increased from 81. 62% to 86.97%. This technology could effectively remove the free carbon impurity in silica fume, improve the purity of silica fume, increase the added value of products.关键词
微硅粉/游离碳/流化床/流态化Key words
silica fume/free carbon/fluidized bed/fluidization分类
化学化工引用本文复制引用
姜子炎,铁生年,汪长安..流化床法除去微硅粉游离碳工艺研究[J].硅酸盐通报,2013,32(1):19-24,6.基金项目
青海省科技项目(2011-G-204) （2011-G-204）
