The Mechanism of the Effect of Pre-Magnetized Butyl Xanthate on Chalcopyrite Flotation

Tingsheng Qiu,Hongliang Zhang,Huashan Yan,Lifeng Cui,Liu Yang,Xiaohe Liu

doi:10.3390/min12020209

Abstract

In this work, we applied the technology of magnetic treatment to the flotation of chalcopyrite. The mechanism of the effect of pre-magnetized butyl xanthate on chalcopyrite flotation was studied using monomineral flotation tests, adsorption tests, conductivity tests, Fourier transform infrared spectroscopy (FTIR), etc. The monomineral flotation test results showed that, after the magnetization pretreatment of butyl xanthate solution, the chalcopyrite flotation recovery was increased by nearly two percentage points, and the dosage was reduced by 4–10 mg/L at the same recovery. The adsorption, FTIR, dissolved oxygen, and conductivity test results all showed that the magnetization pretreatment increased the dissolved oxygen content and promoted the oxidation of butyl xanthate to double xanthate with better selectivity to chalcopyrite. An electrochemical analysis showed that the magnetization pretreatment of butyl xanthate reduced the corrosion potential and corrosion current density of chalcopyrite surface and inhibited the self-corrosion process of chalcopyrite surface. The flotation test results of actual copper sulfide ore showed that pre-magnetized butyl xanthate could increase the copper recovery of copper concentrate by 3.06 percentage points and the sulfur recovery of sulfur concentrate by nearly 3 percentage points, and effectively reduce the mutual content of copper and sulfur concentrates.

Highlights

Magnetic treatment is a technology that uses a magnetic field to act on non-ferromagnetic fluids to produce certain desired changes in the properties of the material being acted upon, thereby, improving the production effect and use efficiency
When the magnetization intensity was greater than 200 mT, the recovery of chalcopyrite remained balanced after a small decrease, but it was still higher than without magnetization
When the magnetization intensity increased to 200 mT, the recovery of chalcopyrite reached a peak of 90.44%, which was an increase of 3.3 percentage points as compared with the unmagnetized treatment, a0s show5n0 in Fig10u0re 4. 1S5u0 bseq2u00ently,25w0 hen t3h00e magnetization intensity was greater than 200 mT, the recoveMraygnoetfizcathioanlinctoenpsiytyr(imteT)remained balanced after a small decrease, but it was still higher than without magnetization

Summary

Introduction

Magnetic treatment is a technology that uses a magnetic field to act on non-ferromagnetic fluids to produce certain desired changes in the properties of the material being acted upon, thereby, improving the production effect and use efficiency. Zhen Wang et al [6] found that magnetized water increased the absolute value of zeta potential and the contact angle of molybdenite, and helped to inhibit the edge oxidation of molybdenite in water Wan He et al [7] used magnetic treatment technology to improve the collection performance of kerosene for molybdenite, and the results showed that the dosage of magnetized kerosene was reduced by nearly 11% as compared with unmagnetized kerosene. Manouchehri [9] found that magnetic treatment technology could agglomerate the fine particles in the flotation process He designed the Proflote magnetic conditioning device and applied it to the Garpenberg concentrator. The wide application of magnetic treatment technology in improving the flotation index of molybdenum, iron, and other minerals and its considerable application prospects have been demonstrated

Methods

Results

Conclusion