METHOD AND SYSTEM FOR DEWATERING AND PREHEATING MIXTURES FOR GLASS MELTING PLANTS
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United States of America Patent
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Issued Date -
Aug 8, 2013
app pub date -
Nov 9, 2010
filing date -
Nov 24, 2009
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Abandoned
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Abstract
A method and a system for thermal dewatering and preheating aqueous mixtures for feeding glass melting plants when passing through a shaft-like container provided with heating elements disposed one above another in tiers. To avoid the feed material from becoming glued together or agglomerating in the preheaters while the feed material is heated by exhaust gases with separately guided exhaust gases and feed material, a) the uppermost tier heating elements are closed relative to the mixture and are kept above 100 C, b) the interface between the mixture and the atmosphere above the mixture is shaped and heated by the uppermost tier heating elements so that part of the thermal output is emitted to the atmosphere via the mixture, and c) as the mixture proceeds through the container it is heated by further heating elements to temperatures close to the glass melting plant feeding temperature.
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