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http://dx.doi.org/10.4191/KCERS.2004.41.12.933

Study on the Synthesis of Tricalcium Aluminate Clinker from Waste Shell and Spent Oil-Refining Catalyst  

Lee, Keon-Ho (Division of Advanced Materials Engineering, Kyungnam University)
Song, Tae-Woong (Division of Advanced Materials Engineering, Kyungnam University)
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Abstract
The clinkerbility and the behaviour of formation of $3CaO{\cdot}Al_{2}O_3$ were studied using the mixture of waste oyster shell and spent oil-refining catalyst mainly by the mineral and microstructural observation. By virtue of the formation of $12CaO{\cdot}7Al_{2}O_3$ at relatively low temperature and its successive reaction with CaO, the $3CaO{\cdot}Al_{2}O_3$ clinkers were formed easily without affection of minor constituents contained in oyster shell. Thus clinkers were formed at $1400^{\circ}C$ directly but began to melt incongruently at higher temperature above that. Aluminium hydroxide, however, was not desirable as an aluminous raw materials of the clinker because rapid melting occurs before $3CaO{\cdot}Al_{2}O_3$ forms main clinker mineral.
Keywords
Triclacium aluminate clinker; Oyster shell; Spent oil-refining catalyst;
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