DTA Study of the Chlorination of Bauxite
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概要
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The chlorination processes of bauxite, which consists mainly of gibbsite(Al) and hematite(Fe), were studied in the presence of active carbon by means of a gas-flow type DTA apparatus. Of the two exothermic peaks appeared at about 270 and 490°C, the former was found to correspond to the chlorination of Fe and was influenced by the formation of water due to dehydration of gibbsite in bauxite, and the latter corresponded to the chlorination of Al. In order to examine the chlorination behaviors of bauxite in more detail, the chlorination of hydrated alumina, hematite and their mixtures were carried out too.
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