The Effect of Temperature on the Leaching of Malachite in Phosphoric Acid Solution

Cui Cui Ji; Dan Dan Wu; Shu Ming Wen; Jiu Shuai Deng

doi:10.4028/www.scientific.net/AMR.962-965.818

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The Effect of Temperature on the Leaching of Malachite in Phosphoric Acid Solution

Abstract:

In this study, the effect of leaching of malachite was investigated using phosphoric acid solution as leaching agent. The effect of temperature on the leaching of malachite was investigated. The leaching rate increased with increasing solution temperature, and a kinetic model was developed to represent this relationship. The leaching was controlled by the shrinking core model for surface chemical reaction. The activation energy of the leaching process was determined to be 30.65kJ/mol.