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BULLETIN OF THE CHINESE CERAMIC SOCIETY ›› 2023, Vol. 42 ›› Issue (12): 4482-4489.

• Ceramics • Previous Articles     Next Articles

Sintering Process of Granite Scrap Mud Building Ceramics

GENG Zhenhua, LI Kai, BI Zhiying, LIU Wenhua, LI Haijian, SUN Gaomeilin, WU Ping   

  1. China Testing & Certification International Group Zibo Co., Ltd., Zibo 255000, China
  • Received:2023-07-13 Revised:2023-09-26 Online:2023-12-15 Published:2023-12-12

Abstract: In order to promote the comprehensive utilization of bulk solid waste and reduce the environmental pollution caused by granite scrap mud, this paper explores a method of preparing ceramic bodies by high temperature sintering using granite scrap mud, high alumina clay and a small amount of additives. The effects of raw material ratio and additive content on the mechanical properties and microstructure of sintered ceramic tiles were studied. The results show that the plasticity of the granulation powder can be improved by adding polyvinyl alcohol (PVA) solution to the ball milling raw material, and the proportion of the granite scrap mud in the body greatly increases. High alumina clay can improve the sintering characteristics of granite scrap mud and the comprehensive mechanical properties of finished products. Among them, the sintering temperature of the finished product with granite scrap mud content of 80% (mass fraction) and clay content of 20% (mass fraction) is about (1 160±30) ℃, the bulk density of the finished product is 2.43 g/cm3, the water absorption rate is 1%, the bending strength is 54 MPa, and the compressive strength is 341 MPa. The comprehensive utilization rate of granite scrap mud is high, and the comprehensive cost is low, which provides an efficient and feasible scheme for the comprehensive utilization of saw mud.

Key words: granite scrap, solid waste utilization, environmental protection, sintering, strengthening mechanism

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