Yue Liua, Yun Xianga, Jieguang Songb,*, Dongliang Zhanga, Hongbin Wena and Yuzhen Wanga
aKey Laboratory for Industrial Ceramics of Jiangxi Province, Pingxiang University, Pingxiang 337055, China
bKey Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education, Guilin University of Technology, Guilin 541004, China
This article is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
The generated electric porcelain waste increases with the rapid development of the electric porcelain industry. Unreasonable utilization results in the waste of resources and environmental pollution. However, at present, many coal gangues and fly ashes are wasted and underutilized in my country. In this paper, electric porcelain waste is used as the main raw material, and its sintering temperature, holding time, and heating rate are discussed to study the performance of the permeable brick prepared from electric porcelain waste. Results show that with the increase in sintering temperature, the porosity and water permeability coefficient of permeable bricks decrease, and their volume shrinkage rate and compressive strength show an increasing trend. Furthermore, porosity decreases with the increase in holding time. The volume shrinkage rate and compressive strength increase, and the water permeability coefficient decreases. The volume shrinkage rate of the permeable brick decreases, and its porosity, water permeability coefficient, and compressive strength increase with the heating rate. Combined with the comprehensive consideration of the porosity, volume shrinkage rate, water permeability coefficient, and compressive strength of permeable bricks, the best sintering process for preparing permeable bricks from electrical porcelain waste is presented with a sintering temperature of 1225 °C, holding time of 1 h, and heating rate of 6 °C/min. The porosity of the prepared permeable brick is 79.5%, the volume shrinkage rate is 25.79%, the water permeability coefficient is 2.82×10-2 cm/s, and the compressive strength is 5.79 MPa
Keywords: Electric porcelain waste, Sintering technology, Permeable brick, Compressive strength, Permeability coefficient
2022; 23(6): 839-844
Published on Dec 31, 2022
Key Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education, Guilin University of Technology, Guilin 541004, China
Tel : +86 799 6338787 Fax: +86 799 6682171