New refractory concretes and binding systems: Basic trends of development, production, and use of refractories in the 21st century. Part II. Ceramic binders and castables

New refractory concretes and binding systems: Basic trends of development, production, and use of... A brief review of recently obtained and studied ceramic binding systems and castables based on them is presented. It is shown that corundum ceramic castables (Al2O3>95%) and ceramic castables based on aluminomagnesia spinel can be produced in principle. New molding methods that employ static pressing, ramming (vibroramming), and centrifugal shaping are described. The centrifugal method was used to produce ceramic castables (d max≤5 mm) with an initial porosity of 13–14%. The method of vibroramming from molding systems with a moisture content of 3.4–4.0% was used to produce mullite-corundum ceramic castables with an elevated density and strength. The high efficiency of use of ceramic castables in metallurgy is due to the superfine porous structure of their matrix (binding) phase. The predominant pore size in various binders is 0.01–1.0 μm. In service, materials with such a structure are not impregnated by slag or metal. A principle for increasing the endurance of refractories produced from conventional raw materials using a new technology is suggested. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Refractories and Industrial Ceramics Springer Journals

New refractory concretes and binding systems: Basic trends of development, production, and use of refractories in the 21st century. Part II. Ceramic binders and castables

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Publisher
Springer US
Copyright
Copyright © 1998 by Plenum Publishing Corporation
Subject
Chemistry; Characterization and Evaluation of Materials; Materials Science; Ceramics, Glass, Composites, Natural Methods
ISSN
1083-4877
eISSN
1573-9139
D.O.I.
10.1007/BF02767985
Publisher site
See Article on Publisher Site

Abstract

A brief review of recently obtained and studied ceramic binding systems and castables based on them is presented. It is shown that corundum ceramic castables (Al2O3>95%) and ceramic castables based on aluminomagnesia spinel can be produced in principle. New molding methods that employ static pressing, ramming (vibroramming), and centrifugal shaping are described. The centrifugal method was used to produce ceramic castables (d max≤5 mm) with an initial porosity of 13–14%. The method of vibroramming from molding systems with a moisture content of 3.4–4.0% was used to produce mullite-corundum ceramic castables with an elevated density and strength. The high efficiency of use of ceramic castables in metallurgy is due to the superfine porous structure of their matrix (binding) phase. The predominant pore size in various binders is 0.01–1.0 μm. In service, materials with such a structure are not impregnated by slag or metal. A principle for increasing the endurance of refractories produced from conventional raw materials using a new technology is suggested.

Journal

Refractories and Industrial CeramicsSpringer Journals

Published: Nov 27, 2007

References

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