Research of Microstructure,Phase,and Mechanical Properties of Aluminum-Dross-Based Porous Ceramics  

作　　者：Liang Yu Yuan Liu Xiuling Cao Yulong Yan Chen Zhang Yanli Jiang 

机构地区：[1]Key Laboratory of New Processing Technology for Nonferrous Metals&Materials,Guilin University of Technology,Guilin,541004,China [2]Guangxi Scientific Experiment Center of Mining,Metallurgy and Environment,Guilin University of Technology,Guilin,541004,China [3]Collaborative Innovation Center for Exploration of Nonferrous Metal Deposits and Efficient Utilization of Resources,Guilin University of Technology,Guilin,541004,China [4]Hebei Technology Innovation Center for Intelligent Development and Control of Underground Built Environment,School of Exploration Technology and Engineering,Hebei GEO University,Shijiazhuang,050031,China

出　　处：《Journal of Renewable Materials》2023年第7期3057-3072,共16页可再生材料杂志（英文）

基　　金：Funding Statement:The work was supported by the National Natural Science Foundation of China(51465014);Guangxi Innovation Driven Development Project(Grant No.AA17204021);the Foundation of Guangxi Key Laboratory of Optical and Electronic Materials and Devices(No.20KF-4);Foundation of Introduction of Senior Talents in Hebei Province(H192003015).

摘　　要：In this study,the effect of sintering temperature and the addition of kaolin,a sintering agent,on the microscopic,phase,and mechanical properties of ceramics were investigated using secondary aluminum dross(SAD)as the main component in the manufacturing of ceramics.The basic phases of the ceramics were Al_(2)O_(3),MgAl_(2)O_(4),NaAl_(11)O_(17),and SiO_(2)without the addition of kaolin.The diffraction peaks of MgAl_(2)O_(4),NaAl_(11)O_(17),and SiO_(2)kept decreasing while those of Al_(2)O_(3)kept increasing with an increase in temperature.In addition,the increase in temperature promoted the growth of the grains.The grains were uniform in size and regular in distribution,with a shrinkage of 2.2%,porosity of 72.5%,bulk density of 1.076 g/cm^(3),and compressive strength of 1.12 MPa.When the sintering temperature was 1450°C,the basic phases of the ceramic after the addition of kaolin were Al_(2)O_(3),MgAl_(2)O_(4),NaAl_(11)O_(17),and SiO_(2).With the increase of kaolin,the diffraction peaks of NaAl_(11)O_(17)and SiO_(2)decreased until they disappeared,while the diffraction peaks of Al_(2)O_(3)increased significantly.When kaolin was added at 30 wt.%,the ceramics obtained had shrinkage of 18%,a porosity of 47.26%,a bulk density of 1.965 g/cm^(3),and compressive strength of 31.9 MPa.Cracks existed inside the ceramics without the addition of kaolin,while the addition of kaolin significantly changed this defect.It is shown that SAD can obtain porous ceramics with good properties at a sintering temperature of 1450°C and a kaolin addition of 30 wt.%.

关 键 词：Secondary aluminum dross porous ceramics microstrure PHASE mechanical properties 

分 类 号：TQ174.1[化学工程—陶瓷工业]