Results 281 to 290 of about 3,096 (300)

Phase composition of bauxite-based refractory castables

Ceramics International, 2011
Abstract The bauxite-based refractory castables are composed of 90 wt.% well-graded (coarse, medium, and fine) bauxite aggregate, 10 wt.% binding matrix and adequate amount of distilled water. The binder mixture was calcium aluminate cement (CAC) containing 80% alumina and magnesium-aluminate spinel (MA-spinel) or mullite either preformed or obtained
Morsy M. Abou-Sekkina, Salah A. Abo-El-Enein, Nagy M. Khalil, Osama A. Shalma   +3 more
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Refractory castables based on barium aluminate cements

British Ceramic Transactions, 2003
Three aluminous cement compositions containing different proportions of barium aluminate were prepared from mixtures of calcined alumina, Egyptian barite, and limestone, by sintering briquettes at ...
S. A. S. El-Hemaly, N. M. Khalil, L. G. Girgis   +2 more
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Damage evaluation of two alumina refractory castables

Journal of the European Ceramic Society, 2009
Abstract The accumulation of damage by thermal treatment and its development under uniaxial loading–unloading cycles performed at room temperature has been evaluated for two alumina based refractory castables; an ultra low cement content bauxite material (Bau-ULCC) and a low cement content andalusite material (And-LCC).
Kakroudi, M.G., Huger, Marc, Gault, Christian, Chotard, Thierry   +3 more
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Permeability of Refractory Castables at High Temperatures

Journal of the American Ceramic Society, 2001
Temperature is an important factor affectng the permeation of fluids in refractory castables. Because of experimental difficulties, however, permeability parameters are usually obtained at room temperature and then extrapolated to the temperature of interest, with no concern regarding porous structure modification (thermal expansion, etc.).
Murilo D. M. Innocentini, Maurícioi G. Silva, Bruno A. Menegazzo, Victor C. Pandolfelli   +3 more
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Nanotechnology in Refractory Castables — An Overview

Interceram - International Ceramic Review, 2018
In recent times, nanotechnology has gained significant attention in the field of refractory research. As the unshaped refractory, especially the castable, is becoming of prime importance in refractory research, a good amount of work is going on globally to study the effect of nanotechnology on castables.
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Paper 14: Developments in Refractory Castables

Proceedings of the Institution of Mechanical Engineers, Conference Proceedings, 1965
A short account, not intended for specialists, is presented of the constitution and general properties of refractory castable mixes. The basic factors affecting the performance of castable refractories are discussed and modern trends in the compounding of the mixes, and in the manufacture of the cement bond, are outlined. Attention is drawn to certain
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Magnesia sinter hydration–dehydration behavior in refractory castables

Ceramics International, 2008
Abstract Magnesia (MgO) easily reacts with water when exposed to humidity or during the mixing of refractory castables, resulting a Mg(OH) 2 coating layer on a particles’ surface. When castables dewater (above 350 °C), this coating begins to decompose, generating porosity and a highly reactive magnesia.
Rafael Salomão, Victor C. Pandolfelli
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Self-flowing high-alumina phosphate-bonded refractory castables

Ceramics International, 2017
Abstract Phosphate refractories have a great potential to be applied in petrochemical industries as they present suitable properties at the temperature range used in fluid catalytic cracking units. This study addresses the development of high-alumina self-flowing castables bonded with H3PO4 solution (48 wt% concentration) or a mixture of phosphoric ...
S.J.S. Lopes, A.P. Luz, D.T. Gomes, V.C. Pandolfelli   +3 more
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Thermal Shock and Size Effects in Castable Refractories

Journal of the American Ceramic Society, 1995
To study accurately the effects of thermal shock on castable refractories, it is necessary to model the fracture process zone. The fictitious crack model, which is often used for the analysis of cementitious materials, is a suitable way to include the fracture process zone in thermal shock analysis.
Cotterell, Brian, Ong, Sze Woo, Qin, Caidong   +2 more
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Drying behavior of hydratable alumina-bonded refractory castables

Journal of the European Ceramic Society, 2004
Abstract The drying behavior of a hydratable alumina-bonded (HAB) refractory castable was evaluated by thermogravimetric tests and compared with an ultra-low cement composition (CAC). The key properties of monolithic refractory dry-out performance, such as fluid permeability and mechanical strength, were also determined.
Fábio A. Cardoso, Murilo D.M. Innocentini, Marcela F.S. Miranda, Fernando A.O. Valenzuela, Victor C. Pandolfelli   +4 more
openaire   +1 more source