作者机构：
[Ou, Jinchen; Hei, Fuqian; Liu, Qing; Xu, Fei] Univ South China, Sch Civil Engn, Hengyang 421001, Peoples R China.;[Ou, Jinchen; Hei, Fuqian; Liu, Qing; Xu, Fei] Hunan Prov Key Lab High Performance Special Concre, Hengyang 421001, Peoples R China.;[Zhao, Guodong] Univ South China, Sch Resourse Environm & Safety Engn, Hengyang 421000, Peoples R China.
通讯机构：
[Qing Liu] S;School of Civil Engineering, University of South China, Hengyang 421001, China<&wdkj&>Hunan Provincial Key Laboratory of High Performance Special Concrete, Hengyang 421001, China<&wdkj&>Author to whom correspondence should be addressed.
摘要：
Polyaluminum chloride slag produced in the production of water treatment agents pollutes the environment and wastes land resources in the process of landfill and waste. In order to solve the resource waste of researching polyaluminum chloride slag, it was used to prepare sintered bricks. In this study, sintered bricks were prepared from polyaluminum chloride slag and glass powder. Taking compressive strength, water absorption, linear shrinkage and bulk density as measurement indexes, the effects of the glass powder content (0-10 wt%), molding moisture (10-20%), molding pressure (15-27.5 MPa), heating method (heat preservation at 400 degrees C and 1000 degrees C for 2 h, heat preservation at 500 degrees C and 1000 degrees C for 2 h, and heat preservation at 1000 degrees C for 2 h), heating rate (2-10 degrees C/min) and sintering temperature (900-1100 degrees C) on the performance of sintered brick and the conditions for meeting Chinese standards were studied. Then, the sintered bricks prepared at different temperatures were characterized by X-ray diffraction and scanning electron microscopy. The results show that the compressive strength (bulk density) increases and the water absorption decreases with the increase of the glass powder content, molding pressure, molding moisture and sintering temperature. Moreover, the linear shrinkage increases with the increase of the molding pressure, molding moisture and sintering temperature, but decreases with the increase of the glass powder content. When the glass powder content of the sintered brick is 10 wt%, with molding moisture of 20 wt%, molding pressure of 25 MPa, heating mode to directly raise the temperature to the target temperature, heating speed of 10 degrees C/min and sintering temperature of 1100 degrees C, the properties, pH value and leaching toxicity of sintered bricks meet the requirements of Chinese standard brick MU15. XRD and SEM analyses showed that with the increase of the sintering temperature, new albite and amphibole phases were formed in the structure, and quartz and other silicate minerals melted to form a liquid phase, making the structure more compact and the performance better. The research results provide a reference for the comprehensive utilization of polyaluminum chloride slag.
期刊：
Chemical Engineering Journal,2023年453:139924 ISSN：1385-8947
通讯作者：
Yang, Jianping(jianpingyang@dhu.edu.cn)
作者机构：
[Hua, Yilong; Li, Mi; Zou, Jinglan; Yang, Jianping; Zhang, Xiaowen; Wu, Xiaoyan; Li, Donghan] Univ South China, Sch Resource Environm & Safety Engn, Hengyang 421001, Hunan, Peoples R China.;[Hua, Yilong; Yang, Jianping] Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China.;[Hua, Yilong; Li, Mi; Zou, Jinglan; Wang, Wei; Zhang, Xiaowen; Wu, Xiaoyan; Li, Donghan] Univ South China, United Lab Heavy Met Pollut Control & Resource Reu, Hengyang 421001, Hunan, Peoples R China.;[Zhao, Guodong; Liu, Qing] Univ South China, Hunan Key Lab Pollut Control & Resource Reuse, Hengyang 421001, Hunan, Peoples R China.;[Zhang, Wei-xian] Tongji Univ, Coll Environm Sci & Engn, State Key Lab Pollut Control, Shanghai 200092, Peoples R China.
通讯机构：
[Jianping Yang] S;School of Resource Environment and Safety Engineering, University of South China, Hengyang, Hunan 421001, China<&wdkj&>State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
关键词：
Continuous flow stirred tank reactor;Eh control strategy;Nanoscale zero-valent iron;Uranium stability;Uranium wastewater
作者机构：
[刘清; 许艺文; 李伟凡] College of Civil Engineering, University of South China, Hengyang;421001, China;[招国栋; 滑熠龙] College of Resource Environment and Safety Engineering, University of South China, Hengyang;[刘清; 许艺文; 招国栋; 滑熠龙; 李伟凡] 421001, China
通讯机构：
[Liu, Q.] C;College of Civil Engineering, China
通讯机构：
[Lu, Y.; Tang, L.] C;College of Environmental Science and Engineering, Hunan University, Changsha, 410082, Hunan, China<&wdkj&>Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha, 410082, Hunan, China
作者机构：
[刘清; 邓真宁] Hunan Province Key Laboratory of Pollution Control and Resources Reuse Technology, University of South China, Hengyang;Hunan;421001, China;[滑熠龙] Key Discipline Laboratory for National Defence for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang;[招国栋] School of Resource & Environment and Safety Engineering, University of South China, Hengyang
摘要：
Abstract: In recent years, domestic and foreign researchers have used lead and zinc tailings to prepare green building materials for analysis. The preparation of geopolymers and foamed ceramics from lead-zinc tailings is discussed; and the reduction of heavy metal solidification and radiation pro-tection of lead-zinc tailings-based building materials is introduced. Research indicates that the lead-zinc tailings-based green building materials have high strength, heavy metal curing and radi-ation protection. Finally, the application and prospect of lead-zinc tailings in the field of building materials are analyzed, which provides a theoretical basis for the researchers in the field.#@#@#摘要: 对近几年国内外科研人员利用铅锌尾矿制备绿色建筑材料进行分析。从利用铅锌尾矿制备地聚物、发泡陶瓷进行主要论述；并简单介绍了铅锌尾矿基建筑材料的重金属固化及防辐射能力；研究结果表明：铅锌尾矿基绿色建筑材料具有高强、重金属固化以及防辐射等性能。最后对铅锌尾矿在建筑材料领域的应用进行了分析与前景展望，为后期在该领域探索的科研工作者提供理论依据。
