Articles
  • Preparation of anhydrous from red gypsum and effect of high strength gypsum on its properties

  • Changrong Liua, Lu Wanga, Hongbin Tana,b,*, Faqin Dongc, Xiaoling Maa and Feihua Yangd

  • aState Key Laboratory of Environment-friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang Sichuan 621010, China
    bShaanxi Engineering Center of Metallurgical Sediment Resource, Shaanxi University of Technology, Hanzhong Shaanxi 723000, China
    cKey Laboratory of Solid Waste Treatment and Resource Recycle, Ministry Education, Southwest University of Science and Technology, Mianyang Sichuan 621010, China
    dState Key Laboratory of Solid Waste Reuse for Building Materials, Beijing Building Materirals Academy of Science Research, Beijing 100041, 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

Red gypsum waste comes from titanium dioxide production by sulphuric acid method. Anhydrite was prepared from the waste. The effects of calcined temperature on the properties of anhydrite were studied. The normal consistency of anhydrite decreased with the increase of calcined temperature, while the compressive strength firstly increase and then decrease. The effect of high strength gypsum on the properties of anhydrite was also studied. The normal consistency of sample decreased with the increase of high strength gypsum content, while the setting time firstly decrease and then increase, strength and density increased


Keywords: Red gypsum, Anhydrite, High strength gypsum, Properties

This Article

  • 2022; 23(6): 778-782

    Published on Dec 31, 2022

  • 10.36410/jcpr.2022.23.6.778
  • Received on Nov 5, 2021
  • Revised on Mar 9, 2022
  • Accepted on Mar 22, 2022

Correspondence to

  • Hongbin Tan

  • aState Key Laboratory of Environment-friendly Energy Materials, School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang Sichuan 621010, China
    bShaanxi Engineering Center of Metallurgical Sediment Resource, Shaanxi University of Technology, Hanzhong Shaanxi 723000, China
    Tel/Fax: +86 816 2419022

  • E-mail: hb-t@163.com