Application of Mechanochemical Treatment to Disintegration of Kaolinite with Sulphuric Acid
BORIS N. DUDKIN1, INNA V. LOUKHINA1, EUGENE G. AVVAKUMOV2 and VITALIY P. ISUPOV2
1Institute of Chemistry, Ural Branch of the Russian Academy of Sciences,
Ul. Pervomaiskaya 48, Syktyvkar 167982 (Russia), E-mail: dudkin-bn@chemi.komisc.ru
2Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences, Ul. Kutateladze 18, Novosibirsk 630128 (Russia), E-mail: isupov@solid.nsk.su
Pages: 327-330
Abstract
It is demonstrated that combined mechanochemical treatment (CMCT) of a mixture of kaolinite and sulphuric acid may be used for extracting aluminum from layered aluminosilicates. X-ray phase analysis showed that aluminum sulphate crystalline hydrate is formed in the products of CMCT of kaolinite. The effect of CMCT of kaolinites on the degree of aluminum extraction into the liquid phase has been studied in apparatuses with different levels of power supply. The highest degree of aluminum extraction was achieved in an AGO-2 centrifugal planetary mill.
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