全废渣制水泥中氧化锶对熟料性能的影响

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (11): 3685-3692.

全废渣制水泥中氧化锶对熟料性能的影响

宋晓玲¹, 汤建建², 徐盼盼², 杨忠¹, 黄东¹, 胡敬平^2,3, 张坤², 罗光前³, 侯慧杰², 刘冰川²

1.新疆天业(集团)有限公司,石河子 832000;
2.华中科技大学环境科学与工程学院,武汉 430074;
3.华中科技大学煤燃烧国家重点实验室,武汉 430074

收稿日期:2021-04-29 修回日期:2021-06-07 出版日期:2021-11-15 发布日期:2021-12-08
通讯作者: 胡敬平,博士,教授。E-mail:hujp@hust.edu.cn
作者简介:宋晓玲(1970—),女,博士,正高级工程师。主要从事煤化工、固废资源化研究和企业经营管理。E-mail:xjty39@163.com;汤建建(1996—),男,硕士研究生。主要从事固体废物资源化和污水处理高级氧化技术研究。E-mail:tangjianjian@hust.edu.cn，宋晓玲和汤建建对本文具有同等贡献。
基金资助:
国家重点研发计划“固废资源化”重点专项(2018YFC1900105)

Influence of SrO on Properties of Clinker in Cement Production with Solely Waste Slags

SONG Xiaoling¹, TANG Jianjian², XU Panpan², YANG Zhong¹, HUANG Dong¹, HU Jingping^2,3, ZHANG Kun², LUO Guangqian³, HOU Huijie², LIU Bingchuan²

1. Xinjiang Tianye (Group) Co., Ltd, Shihezi 832000, China;
2. School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;
3. State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China

Received:2021-04-29 Revised:2021-06-07 Online:2021-11-15 Published:2021-12-08

摘要/Abstract

摘要： 新疆天业(集团)有限公司开发的采用电石渣、石灰渣和除尘灰等十余种废渣烧制水泥的新工艺,实现了大宗工业固废的资源化利用,然而这些废渣中均含有微量的SrO,对熟料性能有一定的影响。通过使用化学成分分析、X射线衍射分析、Rietveld全谱拟合等对生料和烧制成的熟料进行分析,并测定熟料的机械强度。进一步通过热力学模拟,改变入窑生料中SrO掺入量,计算熟料中各主要矿物相和液相的变化情况。结果表明,生料中掺入少量的SrO可以促进C₃S、C₄AF等有效矿物相的形成,并对熟料早期强度提升较大,而对后期强度作用却不明显。随着掺入SrO的增多,熟料中C₃S的含量也在增加,有利于铁相矿物形成,然而游离氧化钙却在随之增加。因此需控制SrO的掺量,其掺入的含量在0.2%~1.0%(质量分数)之间时对提高熟料烧成质量有显著促进作用。

关键词: 废渣, 水泥, 氧化锶, 熟料, 强度, 热力学模拟

Abstract: The technology of dry cement production with solely waste slags developed by Xinjiang Tianye (Group) Co., Ltd uses 100% calcium carbide slag from PVC industry, lime residue, dedusting ash and more than ten types of other waste slags to manufacture cement, implementing the full resource utilization of industrial solid waste. It is found that the raw materials contain a small amount of SrO, which may affect the properties of clinker. By using chemical composition analysis, X-ray diffraction and Rietveld full spectrum fitting, the raw meal and clinker were analyzed, and the mechanical strength of clinker was tested. With varied content of SrO in raw meal, the changes of mineral phases and liquid phase were simulated with a thermodynamic simulation software. The results show that the additional of a small amount of SrO into raw meal can promote the formation of C₃S, C₄AF and other mineral phases, and greatly improve the early mechanical strength of clinker. However, the effect on the later strength is not so obvious.With the increase of SrO content, the content of C₃S in clinker increases, which is beneficial for the formation of iron minerals, but the content of free calcium oxide increases. Therefore, it is necessary to control the addition of SrO and the mass fraction of SrO between 0.2% and 1.0%, which is beneficial for the clinker quality.

Key words: waste slag, cement, SrO, clinker, strength, thermodynamic simulation

中图分类号:

TQ172

宋晓玲, 汤建建, 徐盼盼, 杨忠, 黄东, 胡敬平, 张坤, 罗光前, 侯慧杰, 刘冰川. 全废渣制水泥中氧化锶对熟料性能的影响[J]. 硅酸盐通报, 2021, 40(11): 3685-3692.

SONG Xiaoling, TANG Jianjian, XU Panpan, YANG Zhong, HUANG Dong, HU Jingping, ZHANG Kun, LUO Guangqian, HOU Huijie, LIU Bingchuan. Influence of SrO on Properties of Clinker in Cement Production with Solely Waste Slags[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(11): 3685-3692.

参考文献

[1] ZHANG X M, ZHOU M, LI J H, et al. Analysis of driving factors on China's industrial solid waste generation: insights from critical supply chains[J]. Science of the Total Environment, 2021, 775: 145185.
[2] 赵新丽,杨忠.全废渣生产高标号水泥熟料技术的应用[J].聚氯乙烯,2014,42(12):43-45.
ZHAO X L, YANG Z. Technological application of producing high grade cement clinker wholly from waste slags[J]. Polyvinyl Chloride, 2014, 42(12): 43-45 (in Chinese).
[3] 黄洋洋,齐砚勇,邓磊.ZnO对硅酸盐水泥熟料矿物组成影响的研究[J].硅酸盐通报,2017,36(5):1567-1572.
HUANG Y Y, QI Y Y, DENG L. Effect of ZnO on the mineral composition of Portland cement clinker[J]. Bulletin of the Chinese Ceramic Society, 2017, 36(5): 1567-1572 (in Chinese).
[4] 潘一舟,周访贤.钼铁矿尾矿在水泥生产中的应用[J].金属矿山,1992(2):49-51.
PAN Y Z, ZHOU F X. Application of molybdenite tailings in cement production[J]. Metal Mine, 1992(2): 49-51 (in Chinese).
[5] 李贵强,穆秀君,尹超男,等.掺杂锶对高阿利特水泥熟料制备及性能的影响[J].水泥,2012(12):6-9.
LI G Q, MU X J, YIN C N, et al. Effect of strontium on production and performance of alite-rich cement clinker[J]. Cement, 2012(12): 6-9 (in Chinese).
[6] FAN H H, LV M, WANG X S, et al. Effect of Cr on the mineral structure and composition of cement clinker and its solidification behavior[J]. Materials, 2020, 13(7): 1529.
[7] 耿栋健.MgO对阿利特-硫铝酸钡钙水泥性能的影响[J].山东化工,2021,50(2):50+53.
GENG D J. Effect of MgO on properties of alite-barium calcium sulphoaluminate cement[J]. Shandong Chemical Industry, 2021, 50(2): 50+53 (in Chinese).
[8] 冯庆革,方灿东,杨义,等.不同重金属和氯对水泥熟料及其超早期水化特性的影响[J].硅酸盐通报,2020,39(10):3230-3236.
FENG Q G, FANG C D, YANG Y. Effects of different heavy metals and chlorine on cement clinker and its ultra-early hydration characteristics[J]. Bulletin of the Chinese Ceramic Society, 2020, 39(10): 3230-3236 (in Chinese).
[9] 中华人民共和国国家质量监督检验检疫总局,中国国家标准化管理委员会.水泥化学分析方法:GB/T 176—2017[S].北京:中国标准出版社,2017.
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration. Chemical analysis method of cement: GB/T 176—2017[S]. Beijing: China Standards Press, 2017 (in Chinese).
[10] 中国建材检验认证集团股份有限公司.水泥化验室手册[M].北京:中国建材工业出版社,2012.
China Building Materials Inspection and Certification Group Co.,Ltd. Manual of cement laboratory[M]. Beijing: China Building Materials Industry Press, 2012 (in Chinese).
[11] RIETVELD H M. The rietveld method: a historical perspective[J]. Australian Journal of Physics, 1988, 41(2): 113.
[12] 孙国良,石建敏,陈金媛.微波消解法在硅酸盐分析中应用探讨[J].浙江工业大学学报,2004,32(3):329-332
SUN G L, SHI J M, CHEN J Y. Application of mirowave digestion method in silicate analysis[J]. Journal of Zhejiang University of Technology, 2004, 32(3): 329-332 (in Chinese)
[13] 国家质量技术监督局.水泥胶砂强度检验方法(ISO法):GB/T 17671—1999[S].北京:中国标准出版社,1999.
The State Bureau of Quality and Technical Supervision. Test method for strength of cement mortar (ISO method): GB/T 17671—1999[S]. Beijing: China Standard Press, 1999 (in Chinese).
[14] 林宗寿.水泥工艺学[M].2版.武汉:武汉理工大学出版社,2017.
LIN Z S. Cement technology[M]. 2nd ed. Wuhan: Wuhan University of Technology Press, 2017 (in Chinese)
[15] TAZUDDI N, AIYER H N, CHATTERJEE A. Phase equilibria studies of CaO-SiO₂-Al₂O₃-Fe₂O₃-MgO system using CALPHAD[J]. Calphad, 2018, 60: 116-125.
[16] TAZUDDIN A, AIYER H, CHATTERJEE A. Thermodynamic simulation in evaluating the role of minor oxides and mineralizers in Portland cement clinker phase formation[J]. SN Applied Sciences, 2020, 2(10): 1-14.
[17] DAVIES R H, DINSDALE A T, GISBY J A, et al. MTDATA-thermodynamic and phase equilibrium software from the national physical laboratory[J]. Calphad, 2002, 26(2): 229-271.
[18] 张瑞.水泥熟料烧成热力学及动力学的研究[D].北京:北京工业大学,2010.
ZHANG R. The thermodynamics and kinetics of cement clinker sintering[D]. Beijing: Beijing University of Technology, 2010 (in Chinese).
[19] 王莹莹.游离氧化钙含量对水泥安定性和强度的影响[J].福建建材,2012(10):11-12.
WANG Y Y. Effect of free calcium oxide content on stability and strength of cement[J]. Fujian Building Materials, 2012(10): 11-12 (in Chinese).
[20] 谢志刚,郑仕远.水泥生产中的热力学分析[J].中国水泥,2004(5):36-37
XIE Z G, ZHENG S Y. Thermodynamic analysis in cement production[J]. China Building Material Equipment, 2004(5): 36-37 (in Chinese)