Calcining of calcium hydroxide - as moist granules or briquettes using a covering layer of limestone chips
In the calcination of mouldings used as reacting mixture components in electro-thermal carbide furnaces and obtained by granulating or briquetting of moist calcium hydroxide, by (a) transporting the mouldings through a heating zone on a belt, high temps. being produced by burning gases above the bel...
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Main Authors | , , , , , |
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Format | Patent |
Language | English German |
Published |
01.07.1976
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Edition | 2 |
Subjects | |
Online Access | Get full text |
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Summary: | In the calcination of mouldings used as reacting mixture components in electro-thermal carbide furnaces and obtained by granulating or briquetting of moist calcium hydroxide, by (a) transporting the mouldings through a heating zone on a belt, high temps. being produced by burning gases above the belt and waste gases being drawn away below the belt, (b) covering the calcium hydroxide mouldings present on the belt with a covering layer and transporting them directly through the heating zone without pre-drying, generally as disclosed in DT 2407506, the improvement whereby the covering material is applied to the calcium hydroxide mouldings in such a way that the surface of the covering layer has a corrugated profile. Solves the problem of non-uniform metering of the covering material particularly limestone chips, which can lead to the suction belt being damaged by exposure to excessively high temperatures. A calcined product of improved quality is obtained with an increase in throughput. |
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Bibliography: | Application Number: DE19742461573 |