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含MgO的硅酸盐水泥熟料的形成动力学
作者:王春芳1 周宗辉1 刘彩霞2 程新1 
单位:1. 教育部先进建筑材料工程中心 山东省建筑材料制备与测试技术重点实验室 济南大学 济南 250022 2. 山东民族技师学院 山东 潍坊 262500 
关键词:动力学 水泥熟料 氧化镁 
分类号:TQ172
出版年,卷(期):页码:2011,39(4):162-165
DOI:
摘要:

应用Gentling方程和Arrhenius公式得出熟料的形成速率、反应速率常数及反应活化能等,研究MgO对硅酸盐水泥熟料形成动力学影响;结合X射线衍射和扫描电子显微镜分析其对熟料矿物组成和形貌的影响。结果表明:适量的MgO可以促进硅酸盐矿物的形成和熟料煅烧温度的降低;当MgO含量(质量分数)从0增加到2%时,熟料形成反应速度常数从0.745 0 × 10-5 s-1增加到4.543 6 × 10-5 s-1,反应活化能从386 kJ/mol降低到184 kJ/mol;当MgO含量超过2%时,熟料形成反应速度常数降低,且反应活化能增大。

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The effects of magnesium oxide (MgO) on the formation kinetics of Portland cement clinker were investigated by analyzing the clinker formation rate, the reaction-rate constant (k) and the activation energy (Ea). The k and Ea were calculated according to the Gentling equation and Arrhenius equation. The mineral compositions and morphology of the resultant clinker were analyzed by X-ray diffraction and scanning electron microscope. The results show the formation of silicate minerals is promoted and the calcination temperature of clinker is decreased at a suitable content of MgO added into the raw meal. The k value increased from 0.745 0 × 10-5 to 4.543 6 × 10-5 s-1 and the Ea value decreased from 386 to 184 kJ/mol when the MgO content increased from 0 to 2% in mass. However, the reversed results were obtained at the MgO content of >2%.

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基金项目:
国家“973”计划(2009CB623102)资助项目。
作者简介:
硕士研究生
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参考文献:

[1] HASSAAN M Y, EL-DESOKY M M, ABOU ZEID Y M. Estimation of the solubility limit of iron in tricalcium aluminate using different techniques [J]. Mater Sci Eng A, 2000, 276(1): 147-151. [2] KAMTUDDIN M, DASH S. Nanocrystalline and metastable phase formation in vacuum thermal decompo- sition of calcium carbonate [J]. Thermochim Acta, 2000, 63(3): 129. [3] WANG Haibin. The influences of slag on the formation kinetics of portland cement clinker [J]. J Southeast Inst Technol (in Chinese), 1996, 11(1): 36-39. [4] HUSEM Metin. The effects of bond strengths between lightweight and ordinary aggregate-mortar, aggregate- cement paste on the mechanical properties of concrete [J]. Mater Sci Eng A, 2003, 363(1): 152-158. [5] MA Suhua, SHEN Xiaodong, GONG Xueping. Influence of additives on the sintering of portland cement containing calcium sulphoaluminate mineral [J]. Bull Chin Ceram Soc, 2006, 25(1): 13. [6] MA Suhua, SHEN Xiaodong, GONG Xueping. Influence of CuO on mineral formation and solid solution of high cementing clinker [J]. J Southeast Univ (in Chinese), 2005, 35(1): 155-167. [7] DEMIR F, D?NMEZ B, OKUR H, et al. Calcination kinetic of magnesite from thermogravimetric data [J]. Chem Eng Res Des, 2003, 81(6): 618-622. [8] YE Qing, CHEN Huxing, WANG Yuqing. Effect of MgO and gypsum content on long-term expansion of low heat Portland slag cement with slight expansion [J]. Cem Concr Compos, 2004, 26(4): 331-337. [9] STAN K T, SULOVSKY P. The influence of the alite polymorphism on the strength of the Portland cement [J]. Cem Concr Res, 2002, 32(7): 1169-1175. [10] MAO Sen, LANG Er. New-type Cement and Concrete [M](in Chinese). Beijing: China Build Mater Ind Publish House, 1982: 28. [11] AKIN ALTUN I. Effect of CaF2 and MgO on sintering of cement clinker [J]. Cem Concr Res, 1999, 29: 1847-1850.

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