Articles
  • Effect of sintering technology on properties of coal gangue permeable brick

  • Yuening Qina, Jieguang Songb,c,*, Yue Liuc, Yun Xiangc, Jiangping Liaoc and Yanrong Zhaob

  • aCollege of Civil Engineering and Architecture, Guangxi Vocational Normal University, Nanning 530007, China
    bKey Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education, Guilin University of Technology, Guilin 541004, China
    cSchool of Materials and Chemical Engineering, Pingxiang University, Pingxiang 337055, 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

With the continuous mining of coal resources, a large amount of coal gangue is produced, the ecological environment is severely damaged, and the numerous resource wastage is produced. Therefore, the comprehensive utilization of coal gangue should be studied. In this paper, the effect of heating rate, the sintering temperature and the holding time on the performance of permeable bricks is explored, and the following conclusions are drawn. The coal gangue raw materials were ball milled and sieved with a particle size of 100 meshes, the best foaming effect is used to mixed powder ball mill foaming with speed 80 r/min and 3 h ball milling, the firing system is heating rate 2.5 ℃/min, the sintering temperature 1050 ℃, the holding time is 60min, the performance of permeable brick is the best. After improving the sintering process, the apparent porosity of the permeable brick can reach 55.1%, the compressive strength is 1.42 MPa, and the water permeability coefficient is 1.65×10-2 cm/s.


Keywords: Coal gangue, Permeable brick, Sintering technology, Compressive strength, Permeability coefficient.

This Article

  • 2025; 26(1): 192-196

    Published on Feb 28, 2025

  • 10.36410/jcpr.2025.26.1.192
  • Received on Jan 14, 2022
  • Revised on Mar 16, 2023
  • Accepted on Mar 27, 2023

Correspondence to

  • Jieguang Song

  • bKey Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education, Guilin University of Technology, Guilin 541004, China
    cSchool of Materials and Chemical Engineering, Pingxiang University, Pingxiang 337055, China
    Tel : +86 799 6338787 Fax: +86 799 6682222

  • E-mail: 45102808@qq.com