ISSN:
1573-9139
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Conclusions Studies of high-alumina refractories (62% Al2O3) after service in an experimental converter for converting natural gas showed that the refractory checkers under the action of alternating oxidizing-reducing atmospheres are subjected to considerable physicochemical and mineralogical changes. The porosity of the checker in the lower part of the converter diminishes as a result of the high loads, and in the upper part increases because of partial reduction of SiO2 at high temperatures (1300–1400°C). The synthesis of mullite and its partial decomposition occur most intensely in the upper part of the converter. The basic factors of destruction In high-alumina refractories are the reducing atmosphere, the high temperatures, and the loads over long periods. In the search for refractories suitable for prolonged operation in converters for obtaining hot reducing gas it is necessary to test mullite and corundum products.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01290531
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