Surface Treatment of AZS Refractories Using High-Density Infrared Heating

Tiegs, T.N.; Montgomery, Fred C.; Harper, D. C.; Blue, Craig A.; Vélez, Mariano; Karakus, Musa; Moore, Robert E.

doi:10.1002/9780470294857.ch1

Cited by 2 publications

(7 citation statements)

References 6 publications

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“…In the process of exploring new techniques for enhancing the existing materials, ORNL developed a unique method called HDI treatment for surface modification of ceramic refractory materials. However, this method was mainly applied to the surface treatment of metals before exploring its application to ceramics to reduce surface porosity and reduce molten glass penetration 9,10 .…”

Section: Enhanced Refractories For Glass Melting Furnacementioning

confidence: 99%

“…In the glass industry, alumina-zirconia-silica (AZS) refractories have been used for many years for glass contact applications. Previous work at the ORNL in association with University of Missouri Rolla (UMR) has shown that corrosion resistance is better with increasing zirconia content and also has demonstrated that zirconia-rich coatings can be formed on the surfaces of AZS refractories using HDI thermal treatment 10 . Typical uses of AZS refractory materials for sidewall and bottom blocks are shown in the…”

Section: Enhanced Refractories For Glass Melting Furnacementioning

confidence: 99%

“…As a method to improve the performance of refractory materials, ORNL is utilizing High Density Infrared (HDI) technology, which is relatively new to the materials processing, and is gradually being used in coatings and surface modifications of refractory materials 10 . To date, HDI treatment has mainly been applied to the treatment of metals.…”

Section: Introductionmentioning

confidence: 99%

“…To date, HDI treatment has mainly been applied to the treatment of metals. However, recently it has been applied to the surface treatment of ceramic materials 9,10 . With this in mind and carefully reviewing Journal publications 2, 3, 4, 5, 9, 10 , this thesis is focused on the study of creep resistance effectiveness of HDI treatment of refractory material.…”

Section: Introductionmentioning

confidence: 99%

“…Surface treatment of materials by High Density Infrared (HDI) technology is relatively new to materials processing. The HDI technique has been applied to the surface treatment of both metals and ceramic materials 9,10 . The HDI material processing facility at Oak Ridge National Laboratory (ORNL) utilizes a plasma arc lamp to produce extremely high-power densities of up to 3.5 KW/cm 2 .…”

Section: Introductionmentioning

confidence: 99%

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Finite element simulation of creep behavior in enhanced refractory material for glass furnace

Kuntamalla¹

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An important focus in the glass melting industry, which is an energy intensive industry, is towards greater output and increased energy efficiency in the glass melting process. Conversion to the oxy-fuel-fired furnace from the traditional air-fuel-fired furnace is one means to achieve greater output and energy efficiency, since the capital cost per ton of glass pulled is approximately 58% less for the oxy-fuel-fired furnace compared to the air-fuel-fired furnace. The main disadvantages of the oxy-fuel-fired furnace are its higher operating temperature, possibly to more than 2200 °F, and its alkali partial pressure that hasten the corrosion of refractory materials, particularly in silica refractories. Thus, the refractories used in the oxy-fuel-fired furnace are subjected to high temperatures and stresses during its service life. Considerable creep could occur in the furnace, if the refractory material is not creep resistant. In order to improve the performance of refractory materials, Oak Ridge National Laboratory (ORNL) is utilizing High Density Infrared (HDI) technology. This technology, which is relatively new to materials processing, is increasingly being researched in the development of coatings and surface modifications for refractory materials. This thesis studies the creep resistance effectiveness of the HDI surface treatment for refractory materials. In particular, the dependencies of creep strain on operating temperature and applied stress are studied to determine whether the HDI treated refractory materials can be utilized for glass furnace with oxy-fuel environment. ACKNOWLEGEMENTS First of all, I would like to thank my parents and sisters for their inspiration and support during the completion of this project. I am also greatly indebted for their love and affection. I would like to express my sincere gratitude to Dr. John Ed Sneckenberger for his invaluable support, guidance and knowledge. This project would not have been possible without his encouragement, valuable suggestions and motivation. Much appreciation is extended to Mr.

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Section: Enhanced Refractories For Glass Melting Furnacementioning

confidence: 99%

Section: Enhanced Refractories For Glass Melting Furnacementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations