红外光谱分析助熔剂对煤灰熔融性的影响  

Effect of fluxes on the ash behavior of coal by FTIR

作　　者：李慧[1] 李寒旭[1] 焦发存[1] 

机构地区：[1]安徽理工大学化学工程系,安徽淮南232001

出　　处：《现代仪器》2006年第1期15-18,共4页Modern Instruments

基　　金：安徽省教委自然科学基金(编号:2004kj125);淮南市重大科技项目(编号:2003001)

摘　　要：用红外光谱对煤灰中的矿物组成分析表明:随着灰化温度的升高,矿物中水的特征峰逐渐消失,高岭石转变为莫来石;碳酸盐矿物逐渐分解。助熔剂A、B、C易与煤灰中其它矿物形成钠长石、铁尖晶石、铁橄榄石、赤铁矿、钙长石、硬石膏等助熔矿物,从而降低煤灰熔融性。The mineral composition and mineral transformation of coal ash were investagated by FTIR. It is shown that, as the ashing temperature go up, the water peak at wavenumber 3452cm^-1, 1640 cm^-1 disappears gradually, the mullite derived from kaolinite was formed at peak wavenumber 1100 cm^-1,695 cm^-1.563 cm^-1,470 cm^-1, the transimittance of carbonate decrease gradually. Fluxes of A, B and C which react with other minerals in coal ash to form plagioclase, fayalite, hereynite, gehlenite, anhydrite at high temperature can lower the ash fusion temperature effectively.

关 键 词：红外光谱 矿物 助熔剂 灰熔融温度 

分 类 号：TQ533.2[化学工程—煤化学工程] O657.33[理学—分析化学]