Welan gum as a new depressant for the flotation separation …
It depresses talc in the flotation system, thereby improving the flotation index of chalcopyrite. The flotation test results showed that under the action of an 80 mg/L depressant, a chalcopyrite concentrate with Cu grade of 28.87 % and Cu recovery rate of 86.72 % was obtained, indicating efficient separation ability of chalcopyrite-talc.
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Selective flotation of chalcopyrite from pyrite using …
Chalcopyrite. Pyrite. 1-Hydroxyethylidene-1, 1-diphosphonic acid. Collector. Flotation. 1. Introduction. Copper is one of the most important metals in the world and …
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Enhanced flotation of chalcopyrite particles by grinding …
Flotation tests confirm that the real ore particles ground by short cylinders have higher liberation degree and exhibit a higher flotation recovery of chalcopyrite than ore ground using balls ...
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Mineral/Coal Flotation and Adsorption Mechanism
Flotation is a practical technique to extract minerals based on differences in the physical and chemical properties on the mineral surfaces. Flotation equipment, flotation techniques, and flotation reagents are used for the recovery and separation of valuable minerals from gangue minerals. The gradual depletion of high-grade mineral …
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A green flotation collector towards efficient separation of
The flotation experiments show that PBAHX has a superior recovery ratio for chalcopyrite (91.89%), but a poor flotation performance on pyrite (34.62%) at a collector concentration of 2 × 10 −4 mol/L and pH 9.0. Further, E-nose detection demonstrates that PBAHX has a lower odor intensity than SIBX, which is attributed to the chaotic ...
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Evaluation of the effect of the main parameters on …
behavior of clay minerals in chalcopyrite flotation, there are hardly any studies investigating the flotation parameters that will reduce this negative effect. In this study, it was first determined how ... The equipment using laser diffraction measures particle size distribution in very dilute solutions (~0.1% solids) sonicated for ...
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Flotation of Pyrite
Flotation of Pyrite. Table of Contents. This paper is a record of the first of a series of tests on sulfide minerals to be made by the metallurgical department of the University of California. The purpose of the tests here recorded is to determine the action of standard oils, oil mixtures, and addition agents on the flotation of pyrites.
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Froth Flotation of Chalcopyrite/Pyrite Ore: A …
This manuscript discusses the main chemical and physical mechanisms involved in the phenomena of reagent adsorption on the mineral surface, the impact of pH and type of alkalizing agent, and the...
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Analysis of kinetic models for chalcopyrite flotation: effect …
In this regard, three different kinetic flotation models such as Classical model, Klimpel model, and fully mixed reactor model were applied to evaluate the batch flotation results. The results ...
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Flotation performance of chalcopyrite in the presence of …
1. Introduction. Chalcopyrite (CuFeS 2) is one of the primary copper sulphide minerals and it accounts for 70–80% of the global copper (Cu) reserves (Baba et al., 2012, Nyembwe et al., 2019, Schlesinger et al., 2011).Froth flotation is usually applied to concentrate copper ores and separate copper minerals from the gangue. Currently, there …
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The separation of chalcopyrite and chalcocite from pyrite …
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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Minerals | Free Full-Text | A Study of Temperature Effect on …
A multi-scale investigation was conducted to study the surface properties of xanthate-absorbed chalcopyrite at elevated temperature to understand the temperature effect on the xanthate's performance during chalcopyrite flotation. Firstly, a macro-scale study was initiated to investigate the temperature effect on the hydrophobicity of mineral …
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Enhancing flotation separation of chalcopyrite and …
Separation effects of sodium polyacrylate (PAAS) and gum Arabic (GA) on flotation of chalcopyrite and magnesium silicate minerals using potassium butyl xanthate (PBX) as collector were ...
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Xanthate interaction and flotation separation of H2O2 …
It depresses talc in the flotation system, thereby improving the flotation index of chalcopyrite. The flotation test results showed that under the action of an 80 mg/L depressant, a chalcopyrite concentrate with Cu grade of 28.87 % and Cu recovery rate of 86.72 % was obtained, indicating efficient separation ability of chalcopyrite-talc.
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Nano-microbubble flotation of fine and ultrafine chalcopyrite …
1. Introduction. Froth flotation process separates solid particles based on the differences in physical and surface chemistry properties. It is the most efficient and cost effective for particles within a narrow size range, nominally from 10 to 100 μm for the minerals [1], [2].The lower and upper particle size limits are due to the low probability of …
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Minerals | Free Full-Text | The Mechanism of the …
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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Selective flotation of chalcopyrite from pyrite via seawater …
Xanthate is the most widely used collector for chalcopyrite flotation beneficiation but easily decomposed to generate toxic compounds such as carbon disulfide in acidic solution [5], [6]. ... (Shanghai Zhongchen Digital Technology Equipment Co., Ltd., Shanghai, China). This measurement was repeated at least 3 times under each …
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Selective Adsorption Mechanism of Ferric Ions on the …
Micro-flotation Tests The Influence of pH on Mineral Flotation. For sulfide ore flotation, the pH of the pulp is very important for flotation recovery. 11,29 Figure 2 demonstrates the flotation recovery of chalcopyrite and pyrite, with or without treatment by ferric ions, when the pH changes. When no iron ions are added, the recovery of …
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Dithiouracil, a highly efficient depressant for the selective
The artificially mixed minerals flotation results further proved that dithiouracil exhibited excellent selectivity for chalcopyrite in Cu-Mo flotation. Zeta potential measurements and FTIR analysis illustrated that dithiouracil was chemisorbed on chalcopyrite surface rather than molybdenite, resulting in the flotation separation for the …
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An efficient solid-liquid interface adsorption mode in chalcopyrite
1. Introduction. Copper is the first metal used and discovered by human and its plays an irreplaceable role in national economic construction. Chalcopyrite is the main mineral resource for extracting copper, and froth flotation is one of the important methods for selective enrichment and recovery of chalcopyrite [1].In the flotation process, the …
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Flotation behavior and surface adsorption mechanism of a …
Micro-flotation tests of chalcopyrite and talc. The flotation experiments were conducted using the XFG mechanical agitation flotation machine (manufactured by Jilin Prospecting Machinery Factory, China). The flotation cell had a volume of 60 ml, and the agitation speed was set at 1992 rpm.
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Water-bridged self-assembly of low-odor xanthate …
1. Introduction. Xanthates have been widely used in the rubber industry, metallurgical industry, environmental protection, and have become one of the most successful flotation collectors for its easy preparation, high cost-effectiveness, and ability to chelate with various metal ions [1], [2], [3], [4].However, the unique molecular structure of …
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Investigating the system flotation kinetics of fine chalcopyrite …
1. Introduction. Froth flotation is a kinetic process involving the collision and attachment of hydrophobic particles with air bubbles, and the subsequent transport of those particles with the air bubbles to form a froth concentrate (Fuerstenau & Wayman, 1958).The system chemistry needs to be managed and optimised by the plant metallurgist to ensure …
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Pyrite Processing | Equipment, Process Flow, Cases
The pyrite processing mostly in flotation, flowed by the gravity separation process, and gravity-flotation combination. For ore with simple ore properties, coarser grain size or uneven grain size, a single gravity separation process can be used. General gravity separation equipment, such as pyrite jig, spiral chute, hydrocyclone, shaker tables ...
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Flotation separation of molybdenite from chalcopyrite …
The flotation results indicated that L-cysteine exhibited stronger depressing ability than the conventional chalcopyrite depressants of Na 2 S, NaHS and sodium thioglycolate, suggesting it could become a promising potential depressant in the selective flotation separation of molybdenite from chalcopyrite.
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Correlation of surface oxidation with xanthate adsorption and …
The flotation separation of chalcopyrite from pyrite has attracted increasing attention due to the consumption of vast water resources and depressants. This study proposed the seawater oxidation pretreatment for non-depressant flotation separation of chalcopyrite from pyrite, as an effective and environmentally friendly strategy.
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Eco-Friendly and Biodegradable Depressants in Chalcopyrite Flotation…
Environmentally friendly, flexible and affordable flotation depressants are needed due to the depletion of easy-to-process high-grade ores as well as sustainability and environmental concerns. This paper discusses various organic depressants that have been adopted for selective depression of unwanted minerals in chalcopyrite flotation.
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Chalcopyrite (Cu) Sphalerite (Zn) Separation by Flotation
Sulphur 42.38%. Zinc 12.45%. Gold 0.01 oz/ton. Iron 32.84%. Silver 1.50 oz/ton. Insoluble 8.50%. In order to meet smelter requirements it is desired to produce at least a 20% copper concentrate with not over 8% zinc. The copper is present principally as chalcopyrite in extremely close association with both the sphalerite and pyrite.
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Optimization of Chalcopyrite Flotation Separation You …
1. Mixed flotation process. The mixed flotation process first floats chalcopyrite and other useful minerals and then uses the process of preferential copper floating and suppressing other minerals to obtain qualified copper concentrate. The process is suitable for processing ores with low raw ore grades and simple ore properties.
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The flotation separation of molybdenite from chalcopyrite …
For the flotation experiments of artificially mixed minerals, 2.0 g samples with a chalcopyrite to molybdenite mass ratio of 3:2 were used as the feed samples. All the other operation procedures were the same as the single mineral flotation experiment mentioned above. The flotation recovery of chalcopyrite or molybdenite was obtained …
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