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Asadi et al. [25] beneficiated a sequential sulfidization-flotation technique for copper oxide flotation taken from the Chahmora mine situated in Semnan province, Iran. They employed response ...
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 …
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 …
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 …
minerals Article Reexamining the Role of Ammonium Ions in the Sulfidization, Xanthate-Flotation of Malachite Ruizeng Liu 1, Zhicheng Liu 2, Jianmin Li 3, Shunfu Ao 2, Bin Pei 1, Dianwen Liu 1,* and Jialei Li 1,* 1 Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China; liuruizeng@126 …
Malachite is one of the most important copper-bearing oxide minerals; however, it shows poor floatability prior to sulfidization under the thiol collector system. …
With the gradual depletion of copper sulfide resources, efficient flotation technologies for the recovery of copper oxide minerals, such as malachite, have received significant attention. Although sulfidization plays a critical role in malachite flotation, the fundamental theory of sulfidization flotation remains uncertain in the context of ...
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 ...
Developing specific flotation collectors to improve the separation and enrichment of copper oxide minerals from their ores is still a challenging job. In this …
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 …
In this study, the flotation separation performances of malachite from calcite were investigated using a new chelating collector S-carboxymethyl-O, O'-dibutyl dithiophosphate (CMDTP) by micro-flotation tests, which showed that CMDTP exhibited a stronger collecting power and a better selectivity on malachite than octyl hydroxamic …
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 …
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 ...
The chemical structure of DSHA was characterized through FTIR and ESI-MS. To elaborate on the flotation of DSHA with malachite, micro- and batch-flotation tests, and zeta potential, and XPS measurements, were carried out. Our focus is on the design of a powerful collector to improve the recovery of a refractory copper oxide ore.
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 …
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 ...
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).
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 ...
As indicated in Table 3, the application of ST-activated flotation to a mixed copper oxide ore, inclusive of malachite, resulted in the production of copper concentrate with a copper grade of 24.95 % and a copper recovery rate of 91.20 %. This outcome demonstrates a substantial separation effect and a favorable concentrate index, …
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 ...
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 …
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.
A combined process of flotation and high-gradient magnetic separation was proposed to utilize Yulong complex copper oxide ore. The effects of particle size, activators, Na2S dosage, LA (a mixture ...
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.
Malachite, as an important copper oxide mineral, is mainly separated and recovered from ores using sulfidization xanthate flotation method. In this paper, copper ions and ammonium salts were used as activators to modify the malachite surface, which improved its reactivity and improved the sulfidization and hydrophobicity of the mineral …
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 …
The global market has announced copper as a modern energy metal and finds its extensive utilization in the construction industry, electrical wiring, power transmission lines, alloying, anticorrosive coating, heat exchangers, refrigeration tubing, etc. Copper ore is primarily beneficiated from sulphide mineral deposits. Due to high-grade …
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
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.
As with most copper oxide minerals, malachite does not respond well to traditional copper sulphide collectors, such as xanthates, and alternative flotation schemes are required [2]. The traditional method of copper oxide flotation involves sulphidising the mineral surface prior to the addition of a copper sulphide collector [2].
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 …
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 …
@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}, …
AbstractA combined process of flotation and high-gradient magnetic separation was proposed to utilize Yulong complex copper oxide ore. The effects of particle size, activators, Na2S dosage, LA (a mixture of ammonium sulfate and ethylenediamine) dosage, activating time, collectors, COC (a combination collector of …
📖 Talc's hydrophobic nature makes it easy to float along with metallic sulfide minerals. This characteristic makes talc a challenging gangue mineral to…
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.
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 …
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.
Malachite is one of the most important copper-bearing oxide minerals; however, it shows poor floatability prior to sulfidization under the thiol collector system.
Further, the reagent was directly applied to the flotation of malachite to evaluate its performance in mineral separation. Under non-sulfidic conditions, BEHA …