Optimisation of Calcium removal from Zonooz KaolineDetermination of famtors affecting the leaching process Using factorial design of experiments and Yate s analysis

Category Mineral processing
Group GSI.IR
Location 21th symposium on geosciences
Holding Date 24 May 2008

Abstract:
      There are many common methods for removal of calcium from kaoline. In this paper we focussed on flotation technique employed in Zonooze kaoline deposit. Firstly we report on mineralogical study for determination of calcium minerals. This is followed by an outline of factors affecting the flotation of calcite based on Yate?s analysis using of foctorial design experiments. In this study, it will be shown that of the most important 4 factors affecting the process is indeed the amount of collector. Moreover, it has been established that it is possible to remove calcium significantly using about 2000 grams of collector per ton of kaoline. It has also concluded that the high amount of needed collector could be possibly due to the high surface of particle producd during the conditioning time.

General:
     There are many common methods for remove of calcium from kaoline. In this paper we focussed on classification and acid leaching techniques employed in Zonooze kaoline deposit. Firstly we report on mineralogical study for determination of calcium minerals. This is followed by an outline of factors affecting the acid leaching of kaoline based on Yate s analysis and using of factorial design experiments. In the latter studies, it will be shown that of the most important 4 factors affecting the process is indeed the pH. Moreover, it has been established that it is possible to remove calcium significantly utilizing strichoumetic amount of acid in the leaching stage.

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