Method for preparing ultra-fine white carbon black and nano alumina by using kaolinite as raw material

Method for preparing ultra-fine white carbon black and nano alumina by using kaolinite as raw material

Disclosed is a process for preparing superfine silica and nano-alumina by utilizing kaolin as raw materials. In the method, the kaolin is calcined, lixiviated and filtered, filter liquor containing silicon dioxide and a filter cake containing aluminum trichloride are obtained, then, the filter liquo...

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Bibliographische Detailangaben
Hauptverfasser: FENG JIE, ZHOU ZHUFA, LI YONG, HE QIN, ZHANG ZHONGFEI, WU MINGMIN, CHEN LIKUN, ZHU MINGXIU
Format: Patent
Sprache:chi ; eng
Schlagworte:
CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
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Beschreibung
Zusammenfassung:Disclosed is a process for preparing superfine silica and nano-alumina by utilizing kaolin as raw materials. In the method, the kaolin is calcined, lixiviated and filtered, filter liquor containing silicon dioxide and a filter cake containing aluminum trichloride are obtained, then, the filter liquor and the filter cake are removed by impurity and post-treated, and finally the final product of the powder of the nano-alumina and the powder of the superfine silica are obtained. The process can prepare the superfine silica and the nano-alumina simultaneously, thereby achieving the comprehensive application of the kaolin, and the prepared two products are fine in product index and high in added value of products.