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石油焦脱硫灰渣制备高贝利特硫铝酸盐水泥及性能评价
Preparation of High Belite Sulphoaluminate Cement from Petroleum Coke Desulfurization Slag and its Performance Evalution
投稿时间:2019-11-21  修订日期:2020-01-20
DOI:103969/j.issn.1007 9629202102002
中文关键词:  固体废弃物  石油焦脱硫灰渣  高贝利特硫铝酸盐水泥  性能评价
英文关键词:solid waste  petroleum coke desulfurization slag  high belite sulphoaluminate cement  performance evaluation
基金项目:国家自然科学基金资助项目(51878366,51978353,51808310);山东省自然科学基金资助项目(ZR2019PEE007,ZR2020ME036)
           
作者单位
苏敦磊
SU Dunlei
青岛理工大学土木工程学院,山东青岛266033
School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China
郭远新
GUO Yuanxin
青岛农业大学建筑工程学院,山东青岛266109
School of Architectural Engineering, Qingdao Agricultural University, Qingdao 266109, China
岳公冰
YUE Gongbing
青岛农业大学建筑工程学院,山东青岛266109
School of Architectural Engineering, Qingdao Agricultural University, Qingdao 266109, China
李秋义
LI Qiuyi
青岛农业大学建筑工程学院,山东青岛266109
School of Architectural Engineering, Qingdao Agricultural University, Qingdao 266109, China
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中文摘要:
      利用石油焦脱硫灰渣、粉煤灰、电石渣和低品位铝矾土制备含CaSO4的固废基高贝利特硫铝酸盐水泥(GFHBSAC),采用宏观测试与微观结构分析(X射线荧光光谱仪、X射线衍射仪、扫描电子显微镜)相结合的方法,研究了水泥的矿物组成与性能,验证了生料配比和水泥制备方法的合理性,对比分析了GFHBSAC与市售425级普通硅酸盐水泥、快硬硫铝酸盐水泥以及高贝利特硫铝酸盐水泥的物理性能、力学性能、水化性能和耐久性能,并进一步评估了GFHBSAC的经济效益和环境效益.结果表明:在烧结温度1300℃、保温30min和风冷条件下一次烧成含CaSO4的GFHBSAC完全可行;GFHBSAC熟料无需外掺石膏即可制备出力学性能、水化热、干缩性能和抗硫酸盐侵蚀性能优良的425级水泥;固体废弃物利用率接近85%,可以有效节约石灰石和石膏等天然资源,减少CO2排放,并促进石油焦脱硫灰渣等固体废弃物的减量化消纳.
英文摘要:
      Solid waste based high belite sulphoaluminate cement(GF HBSAC) containing CaSO4 was prepared with petroleum coke desulfurization slag, fly ash, carbide slag and low grade bauxite. Through observing the microstructure and properties of GF HBSAC by adopting research methods such as X ray fluorescence spectrometer, X ray diffusion and scanning electron microscopy, the rationality of the raw material ratio and preparation method of the cement were verified, the physical properties, mechanical properties, hydration properties and durability of the cement clinker were compared with those of commercial Grade 425 ordinary Portland cement, fast hardening sulphoaluminate cement and high belite sulphoaluminate cement, and the economic and environmental benefits of this cement clinker were further evaluated. The results show that it is feasible to prepare GF HBSAC clinker containing CaSO4 under the conditions of 1300℃, 30minutes and air cooling, and the cement clinker can be made into Grade 425 cement with excellent mechanical properties, hydration heat, shrinkage and sulfate corrosion resistance without adding gypsum, and the utilization rate of solid wastes is close to 85%, which can effectively save natural resources, such as limestone and gypsum, and reduce CO2 emissions, and facilitate the reduction and absorption of solid wastes such as petroleum coke desulfurization slag.
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