Liang Yu^1,2,3, Yuan Liu^1,2,3, Xiuling Cao^4,*, Yulong Yan^1,2,3, Chen Zhang^1,2,3, Yanli Jiang^1,2,3,*

Journal of Renewable Materials, Vol.11, No.7, pp. 3057-3072, 2023, DOI:10.32604/jrm.2023.025732 - 05 June 2023

Abstract 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 Al₂O₃, MgAl₂O₄, NaAl₁₁O₁₇, and SiO₂ without the addition of kaolin. The diffraction peaks of MgAl₂O₄, NaAl₁₁O₁₇, and SiO₂ kept decreasing while those of Al₂O₃ 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… More > Graphic Abstract

Hang Xu, Huiling Du^*, Le Kang, Qiudi Cheng, Danni Feng, Siyu Xia

Journal of Renewable Materials, Vol.9, No.12, pp. 2129-2141, 2021, DOI:10.32604/jrm.2021.016090 - 22 June 2021

Abstract The large-scale accumulation and pollution of solid mining waste is an urgent issue. Coal gangue is a prominent type of solid waste, and shows promise for use in high value-added products due to its content of many important compounds, including SiO₂ and Al₂O₃. This study proposed the preparation of highly porous ceramics from coal gangue, coal slime, and coconut palm fibers. The ceramics were produced at a sintering temperature of 950°C with a fiber content of 6 wt%, which led to the formation of porous ceramics with a porosity of 66.93%, volume density of 1.0329 g/cm3… More > Graphic Abstract