Comparison of the Effect of NaClO3 and H2O2 on the Molybdenum Leaching from Molybdenite Concentrate

Arbat, Amir Ganbari; Fesaghandis, Erfan Asghari; Tabrizi, Arvin Taghizadeh; Aghajani, Hossein

doi:10.1007/s12666-020-02036-1

Cited by 19 publications

(1 citation statement)

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“…However, when HCl concentration increased from 2.0 to 6.0 M, the leaching percentage of the metals decreased. Namely, the leaching percentage of molybdenum, iron, calcium, and silicon decreased to 31.8%, 73.7%, 13.1%, and 9.5%, when the concentration of HCl was 6.0 M. In molybdenite, iron, calcium, and silicon exist as oxides 19) and their reactions in acidic solution are described by the following equations:…”

Section: Effect Of Hcl Concentrationmentioning

confidence: 99%

Leaching of Molybdenite by Hydrochloric Acid Solution Containing Sodium Chlorate

Nguyen

Lee³

2022

Resour. Recycl.

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Molybdenum is widely used in many materials; thus, its recovery from ores and secondary resources has attracted considerable attention. In this study, the leaching of molybdenite ore using hydrochloric acid containing sodium chlorate as an oxidizing agent was studied. The effects of several variables, such as the concentrations of HCl and NaClO 3 , reaction temperature and time, and pulp density, on the leaching of the ore were investigated. Under strong acidic and oxidizing conditions, the sulfide in the ore was dissolved as a sulfate ion, which formed gypsum with Ca(II), leading to a decrease in the leaching percentage of Mo(VI) from the ore. The leaching percentage of molybdenum was greater than 90%, while those of iron, calcium, and silicon were 38, 29, and 67%, respectively, under the optimum conditions: 2.0 M HCl, 0.5 M NaClO 3 , pulp density of 5 g/L, temperature of 90 °C, and treatment time of 60 min.

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Section: Effect Of Hcl Concentrationmentioning

confidence: 99%