Investigation of the Important Parameters of Manganese Transfer to Sarcheshmeh Copper Electrolyte

مهندسی متالورژی و مواد

Article 10, Volume 31, Issue 1 - Serial Number 21, March 2020, Pages 111-119   

Document Type: Original Articles

DOI: 10.22067/ma.v31i1.65860

Authors

Elyas karimi; mahmood eskandari nasab^*

Shahid Bahonar University of Kerman

Abstract

Manganese problems in the Solvent extraction-Electrowinning Circuit occur when manganese from the solvent extraction stage into the electrowinning stage can be found. In the electrowinning stage, due to the availability of oxidation conditions, oxidation of manganese is oxidized to 7 valences positive capacity. By increasing the soluble Eh, in addition to causing corrosion conditions in the electrowinning cell, contact with the organic phase leads to the destruction of the organic phase, which results in the formation of a crud in the settlers. The ways in which this impurity moves to the electrowinning stage involves chemical transfer by forming a complex or physical transfer through aqueous entrainment. In this study, the manganese transfer rate was studied by these two methods. As a result of these studies, it was found that the amount of manganese transfer through the chemical is very small and is 0.065 mg /l, and compared with the transfer of manganese through aqueous entrainment, it is about 4 times higher and 0.28 mg/l. In addition to the two routes of manganese transmission, it was found that crud also played a role in the transfer of manganese. The amount of manganese transfer through crud was 20 mg/l. According to these results, crud contribution to the manganese transfer has been greater, which reduces the crud in the system, preventing the effects of manganese in the circuit.

Keywords

Entrainment; Crud; Manganese; Solvent extraction; Chemical Transfer

Supplementary Files

10- karimi - Revised (1) .pdf

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