Synthesis of A New Hydroxamic Acid Collector and Its Collection Mechanism for Malachite

SUN Xin; HUANG Lingyun; HU Bo; ZHANG Mei; LI Yaming

doi:10.13779/j.cnki.issn1001-0076.2022.01.008

2022 Vol. 42, No. 1

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Article navigation > Conservation and Utilization of Mineral Resources > 2022 > 42(1): 52-60

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SUN Xin, HUANG Lingyun, HU Bo, ZHANG Mei, LI Yaming. Synthesis of A New Hydroxamic Acid Collector and Its Collection Mechanism for Malachite[J]. Conservation and Utilization of Mineral Resources, 2022, 42(1): 52-60. doi: 10.13779/j.cnki.issn1001-0076.2022.01.008

Citation:

SUN Xin, HUANG Lingyun, HU Bo, ZHANG Mei, LI Yaming. Synthesis of A New Hydroxamic Acid Collector and Its Collection Mechanism for Malachite[J]. Conservation and Utilization of Mineral Resources, 2022, 42(1): 52-60. doi: 10.13779/j.cnki.issn1001-0076.2022.01.008

Synthesis of A New Hydroxamic Acid Collector and Its Collection Mechanism for Malachite

1.
State Key Laboratory of Clean Utilization of Complex Nonferrous Metal Resources, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
2.
School of Land and Resources Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China

More Information

Corresponding author: HUANG Lingyun, hly@kust.eud.cn

Received Date: 14 January 2022

Publish Date: 25 February 2022

Abstract

Abstract

The application of phthalic acid, a new chelating collector, in the flotation separation of malachite (Cu₂CO₃(OH)₂) and quartz (SiO₂) was studied. The flotation performance of phthalic acid on malachite and quartz was evaluated by micro-flotation test. The results show that phthalic acid has strong adsorption and selectivity for malachite and can effectively separate malachite and quartz. Using phthalic acid as collector, the separation effect of artificial mixed minerals was good at pH 9 and dosage of 80 mg/L. And the recovery of malachite and quartz was 70% and 5%, respectively. The adsorption mechanism was studied by contact angle, SEM-EDS, Zeta potential, adsorption capacity, Fourier Transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS). The results showed that the strong chemical adsorption between phthalic acid and Cu²⁺ ions on malachite surface occurred. After treatment, the hydrophobicity of malachite was greatly improved and the selectivity was good. It can effectively separate malachite and gangue minerals.
- malachite /
- quartz /
- hydroxamic acid /
- flotation /
- flotation mechanism /
- copper

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References

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