Study of Melting Ability of Granulated Glass Batch

Kanit Tapasa; Ekarat Meechoowas; Suwannee Thepbutdee; Amorntep Montreeuppathumb

doi:10.4028/www.scientific.net/KEM.690.272

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 690Study of Melting Ability of Granulated Glass Batch

Study of Melting Ability of Granulated Glass Batch

Abstract:

In the conventional soda-lime glass production, loose raw materials are normally mixed into a glass batch for melting. Dusting and segregation of the loose glass batch are always occurred during the melting process inside the glass furnace. Also, the loose glass batch has low thermal conductivity which limits the glass melting ability and pulling rate of the glass furnace. Granulation and preheating of glass raw materials have been proposed to solve the problems. In this study, the granulated soda-lime glass batch (SiO₂ 50% Na₂CO₃ 22.5% CaCO₃ 12% NaAlSi₃O₈ 9.5% BaCO₃ 2.5% ZnO 1.75% Sb₂O₃ 1% and K₂CO₃ 0.75% by weight) was prepared to study the melting ability in an electric furnace. The granulated batch was also preheated at 500-600°C before melting. The preheating temperature was matched to the temperature of flue gas at the bottom of the stack in the glass furnace. The purpose behind this was aiming to recover the waste heat from the furnace. The experiment exhibited the increased melting ability for the granulated-preheated glass batch

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Periodical:

Key Engineering Materials (Volume 690)

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272-275

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.690.272

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Online since:

May 2016

Authors:

Kanit Tapasa*, Ekarat Meechoowas, Suwannee Thepbutdee, Amorntep Montreeuppathumb

Keywords:

Glass Melting, Granulated Glass Batch, Melting Ability

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