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Extramural Research

Emissions Reduction of Commercial Glassmaking Using Selective Batching

EPA Grant Number: X832541C012
Subproject: this is subproject number 012 , established and managed by the Center Director under grant X832541
(EPA does not fund or establish subprojects; EPA awards and manages the overall grant for this center).

Center: Center for Environmental and Energy Research (CEER)
Center Director: Earl, David A.
Title: Emissions Reduction of Commercial Glassmaking Using Selective Batching
Investigators: Carty, William
Institution: Alfred University
EPA Project Officer: Lasat, Mitch
Project Period: September 1, 2006 through May 28, 2008
RFA: Targeted Research Center (2006)
Research Category: Targeted Research



Selective batching involves separating a glass batch into two or more, chemically unique mixtures. When the two mixtures are added together, they yield the final batch chemistry. Selective batching technologies offer a substantial opportunity to close the gap between theoretical and practical glass melting energy consumption.

Selective batching controls reaction paths to avoid a eutectic liquid forming between sodium carbonate and calcium carbonate. In conventionally batched melts, this leads to high temperature melt segregation. Batch free time reductions (up to 80%) have been achieved using selective batching. Batch free time is defined as the amount of time a glass batch takes to complete the dissolution of all batch ingredients.

While increased efficiency has been observed, the fining behavior of selectively batched melts has yet to be investigated. Fining refers to the removal of bubbles present in the glass as undissolved gas, and implies a homogenous glass. It is proposed that selective batching can improve on fining in two ways (1) by yielding a developing melt whose viscosity is more consistent and higher during the melting process, and (2) by tailoring the size of the voids between granules in a selective batch to achieve fast fining by enhanced Stokes’ fining.

Publications and Presentations:

Publications have been submitted on this subproject: View all 1 publications for this subprojectView all 10 publications for this center

Supplemental Keywords:

selective batching, batch segregation, batch free time, hot stage microscope, HSM, Vogel-Fulcher-Tammann equation, VFT model, high temperature melt segregation, fining, green house gas emissions, CO2,

Progress and Final Reports:
Final Report

Main Center Abstract and Reports:
X832541    Center for Environmental and Energy Research (CEER)

Subprojects under this Center: (EPA does not fund or establish subprojects; EPA awards and manages the overall grant for this center).
X832541C001 Microarray System for Contaminated Water Analysis
X832541C003 The Fining Behavior of Selectively Batched Commercial Glasses
X832541C004 The Use of Fly Ash in the Production of SiAlON based Structural Ceramics
X832541C005 Separation and Purification of Hydrogen From Mixed Gas Streams Using Hollow Glass Microspheres
X832541C006 Magnesium Rich Coatings for Corrosion Control of Reactive Metal Alloys
X832541C008 Tunneled Titanate Photocatalysts for Environmental Remediation and Hydrogen Generation
X832541C009 Material and Environmental Sustainability in Ceramic Processing
X832541C010 Robust, Spectrally Selective Ceramic Coatings for Recycled Solar Power Tubes
X832541C011 Recycling of Silicon-Wafers Production Wastes to SiAlON Based Ceramics with Improved Mechanical Properties
X832541C012 Emissions Reduction of Commercial Glassmaking Using Selective Batching

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The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.

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