An efficient method for recycling spent residue cat-cracking catalysts (SRC) to prepare broadly-applicable mullite-based wear-resistant ceramics
作者： Azadeh Mohammadi , Ehsan Salehi , Hadiseh Aghazadeh , Abbas Ramezani , Babak Eidi
DOI: 10.1016/J.CLAY.2020.105488
关键词:
摘要: Abstract Spent residue catalysts (SRC) of fluid cat-cracking were used as raw materials for the preparation wear-resistant ceramics. The starting material was wet-milled and then dried to obtain semi-dried powders. resultant powder pressed into various shapes sintered at temperatures (1300 1450 °C). bulk density linear shrinkage samples increased rose, while apparent porosity water absorption behaved in a reverse manner. Based on results, specimens 1450 °C appeared be best alternatives results also revealed that pre-calcination has no significant effect final properties ceramic products. XRD approved mullite is only crystallized phase 1450 °C. Moreover, absence vanadium nickel-based phases pattern indicated these elements had been stabilized glassy phase. SEM images displayed presence needle-like grains, agreement with results. Additionally, illustrated fractures, after wear test, inter-granular may have resulted from well-controlled sintering conditions. Generally, this study suggest cleaner method converting SRCs mullite-based ceramics wide range industrial applications.
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