Development of Refractory Synthesized from Waste Ceramic Fiber and Chamotte

Authors

  • Do Quang Minh Associate Professor, Faculty of Materials Technology, Ho Chi Minh City University of Technology (HCMUT) – Vietnam National University (VNU), Ho Chi Minh City, Viet Nam
  • Nguyen Vu Uyen Nhi Research Scholar and Lecturer, Faculty of Materials Technology, Ho Chi Minh City University of Technology (HCMUT) – Vietnam National University (VNU), Ho Chi Minh City, Viet Nam
  • Nguyen Hoc Thang Professor, Faculty of Chemical Technology, Ho Chi Minh City University of Food Industry, Ho Chi Minh City, Viet Nam

DOI:

https://doi.org/10.37591/jopc.v8i2.4293

Keywords:

Ceramic fiber, Chamotte, Refractory, Thermal expansion, Thermal shock resistance

Abstract

Research on refractory materials is always essential in thermal engineering to ensure both heat savings and environmental protection. Raw materials used initially have a great influence on the production process and product properties. In addition, the refractory products are tested under conditions of high temperature and varying intensity, such as tests of thermal shock resistance. In this study, new refractory composites were prepared by mixing waste ceramic fibers with chamotte materials and heated at 1220OC for 1 hour. The refractory composites have low values of volumetric weight from 0.87 to 1.32 g/cm3 which are belong to group of lighweight materials. More important, the strength values of the products are high with testing of bending and compressive strength. Experimental results also showed that the thermal shock resistance of these synthesised materials have high quality in comparison with others referential chamotte refractory materials. Moreover, the coefficient of thermal expansion of the composite is lower than the same types of materials. Analysis of scanning electron microscope image (SEM) shows that the ceramic fiber distribution in the material has the effect of preventing the development of cracks. The material has been applied as resistors, hot gas pipe connectors, industrial furnace repair mortar.

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Published

2020-08-29

Issue

Vol. 8 No. 2 (2020)

Section

Articles

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