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Water quality within flotation has been identified as an important parameter affecting the bubble-particle efficiency and has ... showed that the bubble-particle attachment increased with increases in the concentration of inorganic electrolytes in plant water. Both chalcopyrite and galena showed an increase in zeta potential as the ...
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Abstract This paper presents a part of the results from flotation concentration examination of pure chalcopyrite mineral from the deposit of the mine Rudnik in the frothless cell. The examinations were performed in seven series. In the first three series, the conditions under which the recovery of chalcopyrite from the Rudnik mine has the …
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@article{Cai2023AdsorptionMO, title={Adsorption mechanism of a biodegradable plant polyphenol depressant for selective separation of chalcopyrite from talc}, author={Jiaozhong Cai and Shimei Li and Jiushuai Deng and Bozeng Wu and Hongxiang Xu and Le Yang and Mingzhen Wu and Hong-liang Qiu and Naikai Chen and …
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The type and dosage of flocculants used in the middle thickener of the copper-molybdenum plant, in addition to adjusting the quality of recycled process water, is very effective on the floatability of molybdenite. In this study, the effect of starch-based flocculant (wheat starch) was investigated on the efficiency of middle thickener and …
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The simultaneous occurrence of chalcopyrite and molybdenite frequently requires their combined extraction during the rough flotation stage within beneficiation plants [2], [3]. Collectors such as xanthates and small kerosene are frequently utilized to facilitate the complete recovery of these valuable resources [4], [5] .
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Microflotation experiments of single mineral showed that an amazing flotation selectivity against pyrite combined with powerful collecting ability towards …
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Lazic, P., Niksic, D., Tomanec, R. et al. Chalcopyrite Floatability in Flotation Plant of the Rudnik Mine. J Min Sci 56, 119–125 (2020). …
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Inevitably, a large amount of incompletely hardened filling is introduced into the dressing plant during the mining process, which can significantly affect the flotation of the target minerals after grinding, thus reducing the recovery of useful minerals and causing resource loss. ... Ca 2+ has a low effect on chalcopyrite flotation recovery ...
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It was found that calcium lignosulfonate effectively depressed chalcopyrite flotation, but had little depression effect on molybdenite because the adsorption density of calcium lignosulfonate on chalcopyrite was significantly higher than that on molybdenite. ... At the Yuanjing processing plant, the WO 3 enrichment ratio improved from 17.4 to ...
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This paper investigated the effects of using or not using potassium butyl xanthate (PBX) as a collector on the flotation kinetics of talc and chalcopyrite. By means of atomic force microscopy (AFM), Fourier-transform infrared spectroscopy (FTIR), a contact angle measuring instrument and particle size analyzer, the underlying causes behind the …
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Chalcopyrite (CuFeS 2) is an important and abundant cupriferous mineral, accounting for 70% of copper resources on Earth (Córdoba et al., 2008, Li et al., 2013).The commonly used technology for copper-bearing ore separation is froth flotation (Liu et al., 2019a, Liu et al., 2019b, Liu et al., 2017).As flotation is a water-intensive process, many …
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GG also showed a reasonable pyrite depression efficiency during chalcopyrite flotation using seawater at pH 8 in copper ore beneficiation plants (Fig. 11). The pyrite depression by GG coincided with the forming of massive aggregates, which were generated due to the flocculation phenomenon.
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ZJ 201 (modified starch) is a non-toxic, odorless, and biodegradable polymeric depressant, which selectively depressed galena in batch flotation tests while chalcopyrite was not significantly affected. In a plant trial, copper-lead separation was successful for the first time without using dichromate. Moreover, the plant process could …
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Flotation of chalcopyrite in seawater, pure water, and water with 0.05 M MgCl 2. Particle size 38–75 µm. pH 10 fixed with NaOH. XFGⅡ5-35 microflotation cell. In …
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In industrial beneficiation plants, the key to separating chalcopyrite–pyrite is a highly alkaline pulp slurry. Large amounts of lime used as a depressant are consumed to obtain a pH of 12.0. ... For the chalcopyrite flotation, the recovery decreased slightly from 94.0 to 86.6% with increasing SH concentration from 50 to 600 mg/L, suggesting ...
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At present, there is a variety of collectors employed for chalcopyrite flotation. For instance, xanthates are the commonly used reagents due to their powerful collecting ability (Huang et al., 2019a, Jia et al., 2019b). ... the effect of Tannic acid (TA), a green, biodegradable plant polyphenol, as a talc depressant on the separation behavior ...
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The objective of this paper was to quantify the performance of a novel flotation cell, the REFLUX™ Flotation Cell, using low-grade ores sourced directly from …
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The four flotation concentrates were combined and reground in a rod mill with stainless steel grinding media. The total weight of grinding media was about 10.3 kg.Particle size P 80 = 20 μm was achieved by adjusting the grinding time. The size distribution was determined by Laser Diffraction with a Malvern MasterSizer (Malvern Instrument Ltd., …
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This study explored the processing of chalcopyrite ore through heap leaching followed by flotation. Crushed and agglomerated chalcopyrite ore was subjected to bacterially-assisted leaching at ambient temperature in columns that ranged in height from 1 m to 5 m. > 50% extraction was obtained after 16 months. Chalcopyrite leaching …
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The first part simulates the flotation conditions of galena mineral in industrial plant, and the second part simulates the flotation conditions of chalcopyrite mineral in industrial plant. The conditions that were in the first part of the experiment are: consumption of NaCN depressor 0.36 mg/l, consumption of KAX collector 0.25 mg/l and pH 8.20.
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Chalcopyrite or pyrite flotation was controlled by the galvanic interaction. Abstract. Recently, the copper industry is facing a challenge in dealing with low-grade copper ores and the flotation performance deteriorates when a copper ore with an …
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Introduction. Pyrrhotite is one of the most abundant iron sulfide minerals. It is found in nature to be commonly associated with pentlandite, quartz, ankerite (CaFe(CO 3) 2), pyrite, chalcopyrite, and other sulfide minerals.In many flotation plants, pyrrhotite is rejected to the flotation tailings as a waste product such as in the case of Cu–Ni ores …
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In this paper, the effect that the presence of silicates modified with Fe 2+ and Al 3+ has on flotation of molybdenite and chalcopyrite is studied. Microflotation of ores with high content of chalcopyrite and molybdenite were carried out, using kaolinite as ultra-fine particulate system, and conventional and sea water as aqueous medium.
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Chalcopyrite is the most abundant copper sulfide mineral and the primary source of copper refining. The chalcopyrite ores occurred under various geological processes show …
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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 …
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The flotation test of the cyanide tailings was performed using a suspended flotation cell (XFDIV 1.0, Jilin Explora-tion Machinery Plant Co., Ltd., China). The pulp density was 30wt%, and the flotation water was deionized water. The pH of the mineral suspension was first adjusted to the desired value by adding concentrated NaOH or H2SO4 stock ...
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The separation of chalcopyrite and pyite is not fully solved, and thus more efficient depressants are still needed in industry. This paper used potassium permanganate (KMnO 4) as a pyrite depressant to separate pyrite from chalcopyrite.Flotation and contact angle results indicated that pyrite could be depressed by KMnO 4 at pH 7, while …
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2.2.2 Flotation. Denver SubA type flotation machine with 1 L cell was used in the experiments. Experiments were carried out with artificial mixtures prepared by mixing ore samples with a certain amount of clay, and flotation conditions were given in Table 1.Flotation variables were chosen as clay type (kaolinite, illite, and montmorillonite) and …
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In the flotation separation process of a Cu-Mo-W polymetallic ore, the wastewater from the scheelite cleaning flowsheet contains large numbers of residual flocculants and metal ions, and the separation of chalcopyrite and molybdenite requires a large number of environmentally harmful depressants. Therefore, it is necessary to find …
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The addition of free cyanide depresses the flotation of chalcopyrite with high natural floatability after coating with graphitic carbon on the surface (Grano, 1990). ... However, this pre-treatment method cannot be applied considering the current water balance in many gold plants; therefore economical and feasible ways have to be …
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