Aluminum Hydroxide Production in Ultrasound Cavitation-Assisted Acid Leaching of Kaolin Concentrate
T. Yu. Eranskaya
Institute of Geology and Nature Management, Far East Branch, Russian Academy of Sciences, Blagoveshchensk, 675000 Russia
Keywords: Ultrasound cavitation, leaching, kaolin concentrate, kaolinite, aluminum hydroxide, alumina, nitric acid
Abstract
A new method of acid leaching of kaolin concentrate is assisted with ultrasound cavitation used as a catalyzing factor. This method allows processing of alumina-bearing concentrate without heating of pulp and vacuum degassing of equipment. The lab-scale tests produced aluminum hydroxide at the yield of more than 90% of theoretical value. The process flow diagram is close-loop regarding all consumables.
|
