Reaction Heat of High Alkali Aluminosilicate Glass Batches in Melting Process

Abstract:

High alkali aluminosilicate glass batches were prepared by five different raw materials, reaction heat of which in melting process was studied by means of DSC thermal analysis method. The results show that reaction heat of batches in the heating process of 25-1600°C exists a significant difference, and which is among 4396.38 J/g-5311.14 J/g, moreover the least is the batches using petalite, while the most is spodumene. In the whole heating process, 380-800°C is carbonate decomposition stage, which accounts for 42-46% of the total absorbed heat; and 800-1200°C is silicate reaction stage, 40-50%; and 1200-1600°C is glass clarify and homogenization phase , 6%-16%. Therefore, carbonate decomposition and silicate reaction is the main part of batches heat consumption, the optimization scheme for materials has a significant effect on energy saving and emission reduction.

• Periodical: Advanced Materials Research (Volume 852)
• Pages: 71-75
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.852.71
• Online since: January 2014
• Authors: Ying Liang Tian, Jin Shu Cheng, Jing Zhang, Yan Li Shao, Xiao Li
• Keywords: Batch, High Alkali Aluminosilicate Glass, Melting Process, Raw Material, Reaction Heat

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