Adsorption Characteristics and Mechanism of Stone Powder in Quartzite-type Iron Tailings Machine-made Sand
ZHANG Guangtian1,2,3, LIU Juanhong1, KONG Lijuan4, WU Ruidong1
1 College of Civil and Resources, University of Science and Technology Beijing, Beijing 100833, China 2 Hebei Academy of Building Research, Shijiazhuang 050021, China 3 Hebei Province Science and Technology Key Laboratory of Solid Waste for Building Materials (Preparation), Shijiazhuang 050021, China 4 College of Materials Science and Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050021, China
Abstract: The characteristics of the sandstone powder of the quartz lithological tailings were analyzed, its influence on the fluidity of the mortar and concrete was tested, and then the adsorption kinetics equation and model of stone powder were established in this work. It reveals the adsorption method of water reducing agent on the surface of stone powder, and explains the process and mechanism of stone powder adsorbing water reducing agent using the Zeta potential and infrared test methods. The test shows that chain, layered, and frame silicate minerals exist in stone powder. There are three types of adsorption methods of water reducing agent in minerals: adsorption by ionic bonding, calcium ions on the surface of stone powder play a bridging role, hydrogen bonding on the surface, and adsorption of feldspar and water reducing agent is the main adsorption mode. In low concentration water reducing agent solution, the adsorption rate satisfies the quasi-second-order reaction kinetic equation. The order of adsorption rate is: cement and distilled water> stone powder and distilled water> stone powder and cement filter liquid. The adsorption of water reducing agent by stone powder is single-molecule adsorption, which conforms to the Langmuir adsorption model. The order of the maximum and saturated adsorption amount of water reducing agent on the surface of powder particles is opposite to the adsorption rate. The adsorption of water reducing agent by stone powder is stronger than that of cement. The activity and quantity of stone powder adsorption point in alkaline solution becomes larger, which leads to an increase in the number of stone powder adsorption to water reducer and an increase in the adsorption force.
张广田, 刘娟红, 孔丽娟, 吴瑞东. 石英岩型铁尾矿机制砂中石粉的吸附特性及机理[J]. 材料导报, 2021, 35(6): 6071-6077.
ZHANG Guangtian, LIU Juanhong, KONG Lijuan, WU Ruidong. Adsorption Characteristics and Mechanism of Stone Powder in Quartzite-type Iron Tailings Machine-made Sand. Materials Reports, 2021, 35(6): 6071-6077.
1 Ministry of Industry and Information Technology, National Development and Reform Commission. Several departments' opinions on promoting the high-quality development of the mechanism sand and gravel industry.[EB/OL].http://www.miit.gov.cn/n1146295/n1652858/n1652930/n3757017/c7516057/content.html,2019-11-11. 工业和信息化部,国家发展改革委.十部门关于推进机制砂石行业高质量发展的若干意见[EB/OL].http://www.miit.gov.cn/n1146295/n1652858/n1652930/n3757017/c7516057/content.html,2019-11-11. 2 Zhao J Y. Driving technological restructuring in the Beijing-Tianjin-Hebei region with technological innovation-Interview with Professor Ni Wen from the University of Science and Technology Beijing. China Mining News, 2015-12-09(006). 赵京燕.以技术创新驱动京津冀地区产业结构调整—访北京科技大学教授倪文.中国矿业报,2015-12-09(006). 3 Wang H J. Beijing, Tianjin and Hebei: stop mountain blasting! Journal of the Chinese People's Political Consultative Conference,2015-03-12(027). 王菡娟.京津冀:停止开山炸石!人民政协报,2015-03-12(027). 4 Department of urban rural and housing construction of Hebei Province. DB13(J)/T304-1019, Technical standard for application of machine-made sand,2019(in Chinese). 河北省城乡与住房建设厅. DB13(J)/T304-1019,机制砂应用技术标准,2019. 5 Song S M, Yang J, Zhao H. Ready-mixed Concrete,2018(Z1),48(in Chinese). 宋少民,杨俊,周浩.商品混凝土,2018(Z1),48. 6 Zhang G T, Liu J H, Sui B L, et al. Materials Reports B: Research Papers,2017,31(12),56(in Chinese). 张广田,刘娟红,隋宝龙,等.材料导报:研究篇,2017,31(12),56. 7 Liu J H ,Zhou Y C,Wu A X, et al. International Journal of Minerals, Metallurgy and Materials,2019,26(10),1329. 8 Yao H, Ke K, Lyu Y. Bulletin of the Chinese Ceramic Society,2019,38(12),3773(in Chinese). 姚恒,柯凯,吕阳.硅酸盐通报,2019,38(12),3773. 9 He Y S, He R, Shi S, et al. Bulletin of the Chinese Ceramic Society,2019,38(8),2650(in Chinese). 何廷树,何蕊,史琛,等.硅酸盐通报,2019,38(8),2650. 10 Lu J Y, Wang F G, Li W, et al. China Concrete and Cement Products,2018(5),24(in Chinese). 陆加越,王方刚,李炜,等.混凝土与水泥制品,2018(5),24. 11 Lei L, Reese J, Plank J. ACI Special Publication,2012,288,1. 12 Li S R. Crystallization and mineralogy, Geological Publishing House,China,2008(in Chinese). 李胜荣.结晶与矿物学,地质出版社,2008. 13 Song S M, Yang J. New Building Materials,2018,45(7),5(in Chinese). 宋少民,杨俊.新型建筑材料,2018,45(7),5. 14 Zhang G H, Wei J, Cui H Y. Chemical Industry and Engineering Progress,2018,37(6),2364(in Chinese). 张光华,危静,崔鸿跃.化工进展,2018,37(6),2364. 15 Hui R H, Guan C X, Hou D Y. Journal of Anshan Teachers College,2001(1),95(in Chinese). 回瑞华,关崇新,侯冬岩.鞍山师范学院学报,2001(1),95. 16 Song Q S, Guo X L, Yuan S L, et al. Acta Physico-Chimica Sinica,2009,25(6),1053(in Chinese). 宋其圣,郭新利,苑世领,等.物理化学学报,2009,25(6),1053. 17 Fu H, et al. Materials science, Peking University Press, China,2018(in Chinese). 付华,等.材料科学基础,北京大学出版社,2018. 18 Moon K S, Fuerstenau D W. International Journal of Mineral Processing,2003,72,11. 19 Ye N.Study on the preparation of geopolymer from pretreated bay red mud and mechanism of the strength formation.Ph.D. Thesis, Huangzhong University of Science and Technology, China,2016(in Chinese). 叶楠.拜耳法赤泥活化预处理制备地聚物及形成强度机理研究.博士学位论文,华中科技大学,2016.
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2021, Vol. 35 
