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Pyrophyllite Stone
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Pyrophyllite lumps are harder in form. Pyrophyllite never fluxes when fired. Therefore, it is used in high-grade ceramic products, electric insulators and refractories. Pyrophyllite also imparts thermal shock resistance to ceramic bodies and also used as filler and dusting powder in various industries. Pyrophyllite is used instead of feldspar as a source of aluminum in glass industry. It is soft and used extensively in handicraft industries in making of articles. advantages : low thermal expansion and shrinkage faster firing cycles in the manufacture of white ware in production of stoneware and chinaware more mechanical strength improved whiteness lower firing temperature consumed in refractory used in wall tiles in sanitary ware electrical porcelain other ceramic vitreous china products
