摘要
选用分析纯CaO、SiO2、Al2O3和MgO为实验原料,首先在实验室高温电阻炉炉内开展了单矿物2CaO.Al2O3.SiO2转变为Q相矿物的反应机制实验研究.对获得的熟料样品分别进行XRD、SEM和EDS图谱分析,实验结果表明单矿物2CaO.Al2O3.SiO2能与适量的CaO、MgO反应生成具有良好水化活性的Q相矿物.选取低硫兖州煤和高硫长广煤为实验煤种,在两段多相反应实验台上进行联产水泥熟料过程Q相矿物的生成实验,对所得熟料进行矿物组成X射线衍射分析,结果表明低硫兖州煤和高硫长广煤联产水泥熟料,当混合煤粉中添加适量的CaO、MgO时,联产熟料中有Q相矿物的生成,联产过程中Q相矿物的生成机制与单矿物2CaO.Al2O3.SiO2转化为Q相矿物的反应机制相一致.
Analytical pure CaO, SiO2, Al2O3 and MgO were selected as experimental materials and experiments of transform of pure mineral of 2CaO.Al2O3.SiO2 into Q phase were conducted on high- temperature box-type resistance furnace. The collected clinker samples were analyzed by XRD, SEM and EDS, respectively. The results showed that pure 2CaO.Al2O3.SiO2 with suitable content CaO and MgO could produce Q phase of better hydration performance. Low-sulphur Yanzhou coal and high-sulphur Changguang coal were selected as experimental coals, experiments of formation of Q phase in the process of cement clinker cogeneration were performed on two-stage polyphase reaction setup. The collected clinker samples were measured by XRD. The results showed when coal powder were mixed with certain content CaO and MgO, Q phase mineral appeared in cogeneration cement clinker. The formation mechanism of Q phase in the process of cement cogeneration accorded with that of transform of pure 2CaO.Al2O3.SiO2 into Q phase.
出处
《河南师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第3期103-107,共5页
Journal of Henan Normal University(Natural Science Edition)
基金
河南省科技攻关项目(0624250010)
关键词
煤粉炉
Q相
联产
水泥熟料
形成机制
pulverized coal combustion boilers
Quaternary phase
co-generation
cement clinker
formation mechanism
