Metallurgy, Vol. 60 No. 3-4, 2021.
Preliminary communication
Research of kinetics of zinc leaching with sulfuric acid from smithsonite
R. A. Ramazanova
orcid.org/0000-0001-6930-991X
; D. Serikbayev East Kazakhstan Technical University, Ust-Kamenogorsk, Kazakhstan
S. V. Mamyachenkov
; Ural Federal University named after the First President of Russia B. N. Yeltsin, Ekaterinburg, Russia
N. V. Seraya
; D. Serikbayev East Kazakhstan Technical University, Ust-Kamenogorsk, Kazakhstan
G. K. Daumova
; D. Serikbayev East Kazakhstan Technical University, Ust-Kamenogorsk, Kazakhstan
R. A. Aubakirova
; S. Amanzholov East Kazakhstan University, Ust- Kamenogorsk, Kazakhstan
Zh. T. Bagasharova
; Al-Farabi Kazakh National University, Almaty, Kazakhstan
Abstract
The study investigates the kinetics of zinc leaching from smithsonite with sulfuric acid in order to expand the zinc production feedstocks. The recovery rate of zinc from smithsonite into water-soluble zinc sulfate was found at different leaching time and temperature. Sulfuric acid concentration, its consumption and smithsonite particles size selected in this work for leaching of zinc from this mineral using the indicated solution allowed to determine the magnitude of “apparent” activation energy of the smithsonite reaction with the indicated acid, equal to 2,633 kJ / mol. The calculated value of E, shows that the process investigated is accompanied by diffusion phenomena.
Keywords
zinc sulfate; smithsonite; sulfuric acid; leaching; activation energy
Hrčak ID:
256122
URI
Publication date:
1.7.2021.
Visits: 869 *