| Title | Study of thermal, thermo-mechanical and mineralogical changes of used silica bricks after more than 40 years of life in Coke Oven Battery-3 of Tata Steel |
| Thematic area | Steelmaking: Blast Furnaces and Coke Ovens |
| Presenter | Mr. ASISKUMAR SARKAR |
| Authors | Mr. ASISKUMAR SARKAR, TATA STEEL , JAMSHEDPUR , JHARKHAND, JAMSHEDPUR - INDIA Mr. AVIJIT MUKHERJEE, TATA STEEL , JAMSHEDPUR , JHARKHAND, JAMSHEDPUR - INDIA Mr. PRAKHAR MISHRA, TATA STEEL , JAMSHEDPUR , JHARKHAND, JAMSHEDPUR - INDIA Dr. BK PANDA, OCL , RAJGANGPUR , ORISSA, ORISSA - INDIA Mr. SC SWAIN, OCL , RAJGANGPUR , ORISSA, ORISSA - INDIA Mr. B PRASAD, OCL , RAJGANGPUR , ORISSA, ORISSA - INDIA |
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Abstract
After completion of campaign life more than 40 years, the coke oven battery no-3 of Tata Steel was dismantled and silica bricks were collected for full investigation. It has been found that, though the outer appearance remain same as it was before use, there is a substantial change inside the brick making it denser especially in the area exposed to flue side. These bricks were tested for chemical, physical (AP, BD, TSG), thermal (RTE), thermo-mechanical (Creep-in-compression, RUL) and mineralogical (XRD, Microscopy) studies. It has been found that these used bricks have low amount of cristoballite phase and more amount of tridymite and glassy phase. These changes are found more predominant in the area which are towards flue gas side. The present paper not only deals with the study on the mineralogical changes that happened in these bricks after use for 40 years but also tries to establish a correlation between its laboratory test results after use with the original brick composition |
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