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The effects of graphite and resin contents on the properties of doloma- graphite refractories

Naghibi, S ; Sharif University of Technology | 2006

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  1. Type of Document: Article
  2. Publisher: 2006
  3. Abstract:
  4. In this research, the properties of Dolomite Graphite refractories with different additives were evaluated. The samples were prepared with various amounts of Graphite and resin content. After preparation of the samples, the physical, mechanical properties, slag corrosion and thermal shock resistance were evaluated. The properties of the samples were evaluated up to 11% total Carbon (10% Graphite and 1% residual Carbon from resin) in the system. The reduction in MOR of the specimens, before and after heat treatment was measured, as a measure for the thermal shock resistance evaluation. The slag corrosion test was conducted based on the crucible test, at 1600°C for 5 hr. Then, the depth of penetration was measured. The resultant phases and microstructures were studied along with the effects of tempering temperatures. The obtained results showed that due to the gradual changes in thermal behavior of the resin and its weight reduction the low temperature properties of the system were affected. The results showed that when Graphite was added to the system, CCS of the samples was increased at the beginning and then decreased. The results showed that thermal shock and slag corrosion resistance were also improved. The result indicated that the optimum tempering temperature was determined to be about 220°C
  5. Keywords:
  6. Additives ; Corrosion resistance ; Graphite ; Reduction ; Resins ; Thermal effects ; Crucible tests ; Slag corrosion tests ; Tempering temperatures ; Weight reduction ; Refractory materials
  7. Source: UNITECR '05 - Unified International Technical Conference on Refractories: 9th Biennial Worldwide Congress on Refractories, Orlando, FL, 8 November 2005 through 11 November 2005 ; 2006 , Pages 288-293 ; 1574982656 (ISBN)