Articles
  • Sintering technology and properties of sponge city permeable bricks prepared from electrical porcelain waste
  • 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.

Abstract

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

This Article

  • 2022; 23(6): 839-844

    Published on Dec 31, 2022

  • 10.36410/jcpr.2022.23.6.839
  • Received on May 3, 2022
  • Revised on Jul 3, 2022
  • Accepted on Aug 12, 2022

Correspondence to

  • Jieguang Song
  • 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

  • E-mail: 45102808@qq.com