Abstract
The effect of sericite property on clay flotation of Amakusa pottery stones with Coco amine hydrochloride (COAC) as a collector was examined for the samples collected from different quarries. The clay minerals of Amakusa pottery stones are mainly sericite and a little amount of kaolinite. Results obtained are summarized as follows.1) When sericite in Amakusa pottery stones was treated with dodecylamine hydrochloride (DAC) which is the main component of the collector, dodecylamine-sericite complex was formed in the interlayers of sericite. The formation ratio of dodecylamine-sericite complex increased with the increase of the ratio of swelling layers (montmorillonite) in sericite.2) The flotation recovery of clay minerals was low, since the amount of COAC adsorption on the external surface of clay minerals was little due to the large amount of COAC adsorption in the interlayers of sericite with the swelling layers.3) With increasing the ratio of the swelling layers in sericite, the amount of DAC adsorption increased and the flotation recovery of clay minerals decreased.
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