Kinetics of leaching of the aluminum hydroxide in bauxites by alkaline solutions at atmospheric pressure

The kinetics of leaching of the aluminum hydroxide from the gibbsite bauxites of Guinea (Kindia deposit) is studied under atmospheric conditions. The activation energy of the process is found to be 34. 75 kJ/mol, which indicates that the process proceeds in a kinetic mode. The leaching of the aluminum hydroxide from bauxite in an alkaline solution is simulated using acid-base equilibria (ion exchange) and the electrochemical theory of the structure of a double electrical layer (Gram-Parsons theory). © 2011 Pleiades Publishing, Ltd.

Authors
Burtsev A.V.1 , Lainer Y.A.1 , Gorichev I.G. 2 , Kipriyanov N.A. 3 , Izotov A.D.4
Publisher
Maik Nauka-Interperiodica Publishing
Number of issue
11
Language
English
Pages
1035-1039
Status
Published
Volume
2011
Year
2011
Organizations
  • 1 Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Leninskii pr. 49, Moscow 119991, Russian Federation
  • 2 Moscow State Pedagogical University, Moscow, Russian Federation
  • 3 Peoples' Friendship University of Russia, Moscow, Russian Federation
  • 4 Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow 117907, Russian Federation
Keywords
Acid-base equilibria; Alkaline solutions; Atmospheric conditions; Double electrical layer; Electrochemical theory; Gibbsites; Kinetic modes; Activation energy; Atmospheric pressure; Kinetics; Leaching
Date of creation
19.10.2018
Date of change
19.10.2018
Short link
https://repository.rudn.ru/en/records/article/record/2479/