CAJ | 학술논문

通过热重-差热分析(TG-DTA)和X射线衍射分析(XRD),分别对在N2、CO2、CO2/N2三种气氛下LWM煤灰和模拟煤灰的热行为进行分析.TG-DTA结果表明:LWM煤灰和模拟煤灰热行为有显著差异;与模拟煤灰相比,煤灰在更高的温度下发生矿物转化;在纯CO2气氛下时,模拟煤灰会出现吸附CO2的现象,而煤灰不会出现此种现象.XRD结果表明煤灰与模拟煤灰在高温下的晶体矿物均以莫来石为主.
통과열중-차열분석(TG-DTA)화X사선연사분석(XRD),분별대재N2、CO2、CO2/N2삼충기분하LWM매회화모의매회적열행위진행분석.TG-DTA결과표명:LWM매회화모의매회열행위유현저차이;여모의매회상비,매회재경고적온도하발생광물전화;재순CO2기분하시,모의매회회출현흡부CO2적현상,이매회불회출현차충현상.XRD결과표명매회여모의매회재고온하적정체광물균이막래석위주.
Through thermogravimetric-differential thermal analysis (TG-DTA) and X-ray diffraction analysis (XRD) carried out LWM coal ash and factitious ash thermal behavior analyses under N2, CO2 and CO2/N2 three atmospheres respectively. The results of TG-TDA have shown that the thermal behavior of LWM coal ash and factitious ash has significant difference. Comparing with factitious ash, mineral transformation of LWM coal ash should be happened under the higher temperature. Under the pure CO2 atmosphere, factitious ash will absorb CO2, while LWM coal ash not. The results of XRD have shown that crystalline minerals in LWM coal ash and factitious ash under high temperature are all mainly mullite.