EFFECTS OF LIGHTWEIGHT MULLITE-SILICA RICH GLASS COMPOSITE AGGREGATES ON PROPERTIES OF CASTABLES
Mullite-silica rich glass (MSRG) composite is a material which is more efficient than chamotte for refractory utilization of clay. The effects of lightweight MSRG composite aggregate on the properties of refractory castables were studied by XRD, SEM and EDS, etc. Comparing with a common lightweight...
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Online Access: | http://www.ceramics-silikaty.cz/2013/pdf/2013_03_190.pdf |
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doaj-29ead119e57644b79a3ae727250c2c722020-11-24T22:51:53ZengUniversity of Chemistry and Technology, PragueCeramics-Silikáty0862-54681804-58472013-09-01573190195EFFECTS OF LIGHTWEIGHT MULLITE-SILICA RICH GLASS COMPOSITE AGGREGATES ON PROPERTIES OF CASTABLESLi Y.0Li N.1Yan W.2The Key State Laboratory Breeding Base of Refractories and Ceramics, Wuhan University of Science and Technology, Wuhan 430081, ChinaThe Key State Laboratory Breeding Base of Refractories and Ceramics, Wuhan University of Science and Technology, Wuhan 430081, ChinaThe Key State Laboratory Breeding Base of Refractories and Ceramics, Wuhan University of Science and Technology, Wuhan 430081, ChinaMullite-silica rich glass (MSRG) composite is a material which is more efficient than chamotte for refractory utilization of clay. The effects of lightweight MSRG composite aggregate on the properties of refractory castables were studied by XRD, SEM and EDS, etc. Comparing with a common lightweight chamotte aggregate, it was found that the hot modulus of rupture, refractoriness under load and thermal shock resistance of the castable with lightweight MSRG aggregate were higher than those of the castable with a common lightweight chamotte aggregate because MSRG did not contain silica crystalline phases and contained a liquid phase with very high viscosity at high temperature. The castables with lightweight chamotte aggregate have higher thermal expansion because of existence of cristobalite and quartz, and have lower thermal conductivity because of higher porosity.http://www.ceramics-silikaty.cz/2013/pdf/2013_03_190.pdfLightweight castableMullite-silica rich glass compositeChamotteProperties |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Li Y. Li N. Yan W. |
spellingShingle |
Li Y. Li N. Yan W. EFFECTS OF LIGHTWEIGHT MULLITE-SILICA RICH GLASS COMPOSITE AGGREGATES ON PROPERTIES OF CASTABLES Ceramics-Silikáty Lightweight castable Mullite-silica rich glass composite Chamotte Properties |
author_facet |
Li Y. Li N. Yan W. |
author_sort |
Li Y. |
title |
EFFECTS OF LIGHTWEIGHT MULLITE-SILICA RICH GLASS COMPOSITE AGGREGATES ON PROPERTIES OF CASTABLES |
title_short |
EFFECTS OF LIGHTWEIGHT MULLITE-SILICA RICH GLASS COMPOSITE AGGREGATES ON PROPERTIES OF CASTABLES |
title_full |
EFFECTS OF LIGHTWEIGHT MULLITE-SILICA RICH GLASS COMPOSITE AGGREGATES ON PROPERTIES OF CASTABLES |
title_fullStr |
EFFECTS OF LIGHTWEIGHT MULLITE-SILICA RICH GLASS COMPOSITE AGGREGATES ON PROPERTIES OF CASTABLES |
title_full_unstemmed |
EFFECTS OF LIGHTWEIGHT MULLITE-SILICA RICH GLASS COMPOSITE AGGREGATES ON PROPERTIES OF CASTABLES |
title_sort |
effects of lightweight mullite-silica rich glass composite aggregates on properties of castables |
publisher |
University of Chemistry and Technology, Prague |
series |
Ceramics-Silikáty |
issn |
0862-5468 1804-5847 |
publishDate |
2013-09-01 |
description |
Mullite-silica rich glass (MSRG) composite is a material which is more efficient than chamotte for refractory utilization of clay. The effects of lightweight MSRG composite aggregate on the properties of refractory castables were studied by XRD, SEM and EDS, etc. Comparing with a common lightweight chamotte aggregate, it was found that the hot modulus of rupture, refractoriness under load and thermal shock resistance of the castable with lightweight MSRG aggregate were higher than those of the castable with a common lightweight chamotte aggregate because MSRG did not contain silica crystalline phases and contained a liquid phase with very high viscosity at high temperature. The castables with lightweight chamotte aggregate have higher thermal expansion because of existence of cristobalite and quartz, and have lower thermal conductivity because of higher porosity. |
topic |
Lightweight castable Mullite-silica rich glass composite Chamotte Properties |
url |
http://www.ceramics-silikaty.cz/2013/pdf/2013_03_190.pdf |
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