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Abstract. Read online. Copper oxide minerals are important copper resources, which include malachite, azurite, chrysocolla, cuprite, etc. Flotation is the most widely used method for the enrichment of copper oxide minerals in the mineral processing industry.
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The copper ion is a common metal ion in the pulp in the beneficiation industry, and it affects the recovery of the target minerals. In this study, we investigated the interaction mechanism of copper ions with the surface of sulfidized malachite and its effect on flotation.The flotation behavior and surface hydrophobicity were studied by …
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Copper oxide minerals are important copper resources, which include malachite, azurite, chrysocolla, cuprite, etc. Flotation is the most widely used method for the enrichment of …
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To promote the flotation separation and recovery of copper oxide minerals from copper sulfide-oxide ores was an attracting and challenging work for the mining industries (Li et al., 2019a;Liu et ...
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Developing specific flotation collectors to improve the separation and enrichment of copper oxide minerals from their ores is still a challenging job. In this …
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@article{Zheng2024InterfaceAM, title={Interface adsorption mechanism of 5-nonyl salicylaldehyde oxime on malachite surface and its flotation separation performance with calcite and quartz}, author={Jie Zheng and Anruo Luo and Yan Jin and Baicheng Feng and Jianhua Chen and Xingrong Zhang}, journal={Separation and Purification Technology}, …
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Copper oxide ore has a complex composition, and a low recovery rate is often achieved via the traditional sorting method. A new combined process of …
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For high-grade mixed oxide copper mines with complex ore properties, the direct leaching method can also achieve good economic benefits (Yin et al., 2021b). ... Due to the high selectivity adsorption of pentyl xanthate, flotation separation of malachite and calcite has been achieved without the action of regulators, providing a new direction ...
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Benzyl hydroxamic acid and octyl hydroxamic acid can effectively collect copper oxide minerals (Marion et al., 2017), Fan conducted a study on the flotation of malachite, calcite and quartz with three phosphate surfactants (Fan et al., 2019) and Li conducted a Study on the flotation performance and adsorption mechanism of tert ...
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Copper oxide ore has a complex composition, and a low recovery rate is often achieved via the traditional sorting method. A new combined process of flotation–high-gradient magnetic separation–leaching is proposed here to recover copper minerals. The test results showed that the flotation process was successful when using …
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Copper oxide minerals are important copper resources, which include malachite, azurite, chrysocolla, cuprite, etc. Flotation is the most widely used method for the enrichment of copper oxide minerals in the mineral processing industry. In this paper, the surface properties of copper oxide minerals and their effects on the mineral flotation behavior …
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Semantic Scholar extracted view of "A novel decyl-salicyl hydroxamic acid flotation collector: Its synthesis and flotation separation of malachite against quartz" by Fangxu Li et al. ... One of the main challenges in the copper oxide processing industry is the application of flotation to reduce operating costs.
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DOI: 10.1016/J.MINENG.2018.11.036 Corpus ID: 106384532; Novel chelating surfactant 5-heptyl-1,2,4-triazole-3-thione: Its synthesis and flotation separation of malachite against quartz and calcite
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1. Introduction. With the over-exploitation of copper sulfide ore, it is of necessity to utilize and develop the copper oxide ore with low grade [1].As one of the typical copper-rich oxide minerals, the development and utilization of malachite have attracted more attention [2].Quartz is a main gangue mineral, which co-exists with …
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DOI: 10.1016/j.seppur.2024.128447 Corpus ID: 270609221; Synthesis and utilization of a novel amidoxime collector for the flotation separation of cuprite from calcite @article{Li2024SynthesisAU, title={Synthesis and utilization of a novel amidoxime collector for the flotation separation of cuprite from calcite}, author={Qiao Li and Lingyun Huang …
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The fresh copper oxide mineral surfaces exposed during crushing and grinding have a significant effect on subsequent flotation [23], [24], [25], [26].Many dangling bonds exist on fresh mineral surfaces because of destruction of the original lattice …
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Abstract. Copper oxide minerals are important copper resources, which include malachite, azurite, chrysocolla, cuprite, etc. Flotation is the most widely used method for the enrichment of copper ...
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The flotation results of malachite direct flotation and sodium sulfide or TMT activated flotation were indicated in Fig. 3 (a). The results revealed that direct flotation of malachite yielded a recovery rate below 20 %. After activation with 90 mg/L sodium sulfide, the flotation recovery reached 37.87 % at pH 9.0.
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Sulfidization flotation using xanthate collectors has become the preferred method in separation and recovery of copper oxide minerals from both oxide and sulfide-oxide copper ores (Corin et al., 2017, Lee et al., 2009, Marion et …
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Materials. The XRD of malachite, quartz, and calcite were shown in Figure 1.The element analysis of malachite, quartz, and calcite were listed in Table 1. −75 + 38 μm fractions of single minerals were utilized in micro-flotation experiments, and −5 μm fractions were prepared for XPS measurement.Copper oxide ore from Jiangxi province …
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OHA with over 98.5% purity was prepared in our group [43], and other chemicals were purchased from commercial companies.Malachite, originated from Congo, was purchased from Hubei Daye Xinyang Mineral Company of China [4].Quartz and calcite were obtained from Guangxi Guilin of China [4].After being dry-ground and wet-sieved, …
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With the depletion of good processing copper sulfide ores, the processing of oxidized copper sulfide ores or copper oxide ores using flotation is of crucial importance for copper industry (Marion et al., 2017, Li et al., 2018, Liu et al., 2018, Han et al., 2021).
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However, as described in 3.3 Selective separation of malachite and silica by depletion interaction, 3.4 Effects of PEG molecular weight on flotation of malachite and silica, regardless of the addition of higher amounts of electrolyte to induce a stronger solution IS, silica-bubble interaction was still unfavorable due to the inherent huge E B ...
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Malachite is a common copper oxide mineral that is often enriched using the sulfidization–xanthate flotation method. Currently, the direct sulfidization method cannot …
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Fig. 2. SEM images with some EDS patterns (a–c) and optical micrograph (d) of Yulong copper oxide ore. (A malachite, B limonite, C azurite, D chrysocolla, E copper manganese aluminum silicon oxides, F pyrite, G clay, H chalcocite). Copper Recovery from Yulong Complex Copper Oxide Ore by Flotation and Magnetic Separation 1565
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The effect of seven hydroxamate collectors on malachite flotation was investigated. • Separation of malachite from quartz in a synthetic ore was obtained. • All seven collectors investigated selectively adsorb onto the surface of malachite. • Benzo- and two C 8 alkyl hydroxamates resulted in the best flotation response.
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To explore the effect of lead ion on the flotation behavior of sulfidized malachite, flotation tests of the sulfidized malachite flotation recovery as a function of the xanthate concentration in the absence and presence of Pb(II) were conducted, as shown in Fig. 1.The concentrations of Na 2 S and Pb(NO 3) 2 were 1 × 10 −3 M. According to the …
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Sulfidization followed by xanthate flotation is an effective technique to recover copper oxide minerals.However, the sulfidization mechanism of malachite has not been determined. In this work, the sulfidization mechanism was investigated by microflotation, field emission scanning electron microscopy (FESEM), energy dispersive …
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DSHA was firstly introduced in malachite flotation. • DSHA adsorbed on malachite surfaces through co-adsorption mode. • DSHA showed powerful collecting ability to malachite and satisfied selectivity against quartz. • Mixed collectors of DSHA and sodium isobutyl xanthate achieved higher selective separation of copper oxide ore.
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Section snippets Materials and reagents. The malachite sample used in all the experiments was obtained from the Yunnan Province in China. For micro-flotation experiments and adsorption measurements, the malachite sample was crushed and dry-ground in an agate torsion mortar; the ground products were then sieved using a …
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