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Title: High-Intensity Plasma Glass Melter Final Technical Report

Abstract

The purpose of this project was to demonstrate the energy efficiency and reduced emissions that can be obtained with a dual torch DC plasma transferred arc-melting system. Plasmelt Glass Technologies, LLC was formed to solicit and execute the project, which utilize a full-scale test melter system. The system is similar to the one that was originally constructed by Johns Manville, but Plasmelt has added significant improvements to the torch design and melter system that has extended the original JM short torch lives. The original JM design has been shown to achieve melt rates 5 to 10 times faster than conventional gas or electric melting, with improved energy efficiency and reduced emissions. This project began on 7/28/2003 and ended 7/27/06. A laboratory scale melter was designed, constructed, and operated to conduct multiple experimental melting trials on various glass compositions. Glass quality was assessed. Although the melter design is generic and equally applicable to all sectors within the glass industry, the development of this melter has focused primarily on fiberglass with additional exploratory melting trials of frits, specialty, and minerals-melting applications. Throughput, energy efficiency, and glass quality have been shown to be heavily dependent on the selected glass composition. During this project,more » Plasmelt completed the proof-of-concept work in our Boulder, CO Lab to show the technical feasibility of this transferred-arc plasma melter. Late in the project, the work was focused on developing the processes and evaluating the economic viability of plasma melting aimed at the specific glasses of interest to specific client companies. Post project work is on going with client companies to address broader non-glass materials such as refractories and industrial minerals. Exploratory melting trials have been conducted on several glasses of commercial interest including: C-glass, E-glass, S-Glass, AR-Glass, B-glass, Lighting Glass, NE-Glass, and various frits. Exploratory melts of non-glassy materials, such as wollastonite, zirconium silicate, and alumino-silicate melts were successfully done indicating that plasma melting has potential application beyond glass. Experimental results were generated that show the high quality of plasma-melted fiberglass compositions, such as E-glass, can result in good fiberizing performance. Fiberizing performance and tensile strength data were achieved during the project to support this conclusion. High seed counts are a feature of the current lab scale melter and must be dealt with via other means, since fining work was outside the scope of this project.« less

Authors:
;
Publication Date:
Research Org.:
Plasmelt Glass Technologies, LLC, 2845 29th Street, Boulder, CO 80301
Sponsoring Org.:
USDOE Office of Industrial Technologies (OIT) - (EE-20)
OSTI Identifier:
894643
Report Number(s):
DOE-GO13093
TRN: US200719%%893
DOE Contract Number:  
FC36-03GO13093
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING; CERAMIC MELTERS; DESIGN; ECONOMICS; ENERGY EFFICIENCY; FIBERGLASS; GLASS; GLASS INDUSTRY; MELTING; PERFORMANCE; PLASMA; REFRACTORIES; SEEDS; TENSILE PROPERTIES; VIABILITY; ZIRCONIUM SILICATES; glass melting; plasma; plasma glass melting; plasma torches; plasma electrodes; glass quality; glass chemistry; glass volatilization; energy balance; pilot melter; Plasmelt; JM; AGY; BTU/ton; pounds per hour; modeling; torch life; torch stability; glass fiberizing; glass fibers; E-glass; AR-glass, S-glass, C-glass; frit; glass nuggets; glass patties; energy efficiency; kilowatts per pound

Citation Formats

Gonterman, J Ronald, and Weinstein, Michael A. High-Intensity Plasma Glass Melter Final Technical Report. United States: N. p., 2006. Web. doi:10.2172/894643.
Gonterman, J Ronald, & Weinstein, Michael A. High-Intensity Plasma Glass Melter Final Technical Report. United States. https://doi.org/10.2172/894643
Gonterman, J Ronald, and Weinstein, Michael A. 2006. "High-Intensity Plasma Glass Melter Final Technical Report". United States. https://doi.org/10.2172/894643. https://www.osti.gov/servlets/purl/894643.
@article{osti_894643,
title = {High-Intensity Plasma Glass Melter Final Technical Report},
author = {Gonterman, J Ronald and Weinstein, Michael A},
abstractNote = {The purpose of this project was to demonstrate the energy efficiency and reduced emissions that can be obtained with a dual torch DC plasma transferred arc-melting system. Plasmelt Glass Technologies, LLC was formed to solicit and execute the project, which utilize a full-scale test melter system. The system is similar to the one that was originally constructed by Johns Manville, but Plasmelt has added significant improvements to the torch design and melter system that has extended the original JM short torch lives. The original JM design has been shown to achieve melt rates 5 to 10 times faster than conventional gas or electric melting, with improved energy efficiency and reduced emissions. This project began on 7/28/2003 and ended 7/27/06. A laboratory scale melter was designed, constructed, and operated to conduct multiple experimental melting trials on various glass compositions. Glass quality was assessed. Although the melter design is generic and equally applicable to all sectors within the glass industry, the development of this melter has focused primarily on fiberglass with additional exploratory melting trials of frits, specialty, and minerals-melting applications. Throughput, energy efficiency, and glass quality have been shown to be heavily dependent on the selected glass composition. During this project, Plasmelt completed the proof-of-concept work in our Boulder, CO Lab to show the technical feasibility of this transferred-arc plasma melter. Late in the project, the work was focused on developing the processes and evaluating the economic viability of plasma melting aimed at the specific glasses of interest to specific client companies. Post project work is on going with client companies to address broader non-glass materials such as refractories and industrial minerals. Exploratory melting trials have been conducted on several glasses of commercial interest including: C-glass, E-glass, S-Glass, AR-Glass, B-glass, Lighting Glass, NE-Glass, and various frits. Exploratory melts of non-glassy materials, such as wollastonite, zirconium silicate, and alumino-silicate melts were successfully done indicating that plasma melting has potential application beyond glass. Experimental results were generated that show the high quality of plasma-melted fiberglass compositions, such as E-glass, can result in good fiberizing performance. Fiberizing performance and tensile strength data were achieved during the project to support this conclusion. High seed counts are a feature of the current lab scale melter and must be dealt with via other means, since fining work was outside the scope of this project.},
doi = {10.2172/894643},
url = {https://www.osti.gov/biblio/894643}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Oct 27 00:00:00 EDT 2006},
month = {Fri Oct 27 00:00:00 EDT 2006}
}