Recycling of exhausted dust from regenerator of glass furnace in glass batch melting

Jitlada KUMPA; Pitcharat INEURE; Parinya CHAKARTNARODOM; Benya CHERDHIRUNKORN; Edward A LAITILA; Nuntaporn KONGKAJUN

doi:10.55713/jmmm.v32i2.1263

Authors

Jitlada KUMPA Department of Materials and Textile Technology, Faculty of Science and Technology, Thammasat University, Pathum Thani, 12120, Thailand
Pitcharat INEURE Glass Bridge Company Limited, Bangkok, 10230, Thailand
Parinya CHAKARTNARODOM Department of Materials Engineering, Faculty of Engineering, Kasetsart University, Bangkok, 10900, Thailand
Benya CHERDHIRUNKORN Department of Materials and Textile Technology, Faculty of Science and Technology, Thammasat University, Pathum Thani, 12120, Thailand
Edward A LAITILA Department of Materials Science and Engineering, Michigan Technological University, Houghton, MI, 49931, USA
Nuntaporn KONGKAJUN Department of Materials and Textile Technology, Faculty of Science and Technology, Thammasat University, Pathum Thani, 12120, Thailand

DOI:

https://doi.org/10.55713/jmmm.v32i2.1263

Keywords:

Exhausted dust, Regenerator, Glass batch melting, Thermal properties

Abstract

In soda-lime glass manufacturing, evaporation of volatile compounds from glass melt is the origin of the dust emission from glass tank furnace. The exhausted dust then is deposited on the regenerator and is needed to be removed. Thus, this study focuses on using the dust from melting glass in glass production. The glass batches were prepared from 0 wt% to 10 wt% of the exhausted dust from soda-lime glass production as a substitution of the total raw materials. The analysis of phase and chemical composition of the dust by x-ray powder diffraction (XRD) and x-ray fluorescence technique (XRF) indicated that it consisted mainly sodium sulphate. Thermal analysis (TG/DSC) revealed that the addition of exhausted dust reduced the temperature of the melting reaction of the glass batches. The optimum amount of the exhausted dust, which made it possible to obtain the glass with the lowest number of remaining bubbles, was 2 wt%. From CIE lab and dilatometry results revealed that up to 2 wt% replacement of total raw materials by the exhausted dust in the glass batch did not affect the glass color, thermal expansion coefficient, glass transition temperature and dilatometric softening point of glass samples.

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