Investigation of TiO2 influence on quality of the blends of clays from Semirom and Gheshlagh Mines for using in refractory industry
Subject Areas :
1 - عضو هیات علمی دانشگاه آزاد اسلامی واحد شهر مجلسی
2 - استادیار، گروه زمین شناسی، واحد بندرعباس، دانشگاه آزاد اسلامی
Keywords: Rutile, chemical analysis, Fire Clay, Kaoline, Phase Changes,
Abstract :
In this project, the blends of two row materials which were made up of clays from Simirom- and Gheshlagh-mines were examined to determine their thermal behavior for production of fire-bricks. The reason of blending these two materials was the high content of TiO2 (5.08 %) in clay from Gheshlagh and low percentage of titanium-dioxide (1.52 %) in clay from Simirom. Some samples of mixed substances were burned at temperatures of 1340 and 1600 °C for 5 hours. The chemical and mineralogical compositions of the raw and burned materials were determined by using XRF, XRD and SEM. The constituent minerals of the raw material are kaollinite, dickite, geothite and quartz in the clay from Simirom and kaollinite, boehmite, rutile, diaspor(?), dickite, and goethite in the substance from Gheshlagh. The burned mixed materials consisted of mullite, silica and rutile. According to the data resulting of examinations, the suitable mixture of two materials with different contents of TiO2 can make it possible to have an appropriate mixed material for using in refractory industry.
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