Molybdenite is naturally floatable and can be separated from copper sulfide mineral using froth flotation. Properties of molybdenite such as mineralogy, microstructure, surface wettability, zeta potential, etc. can have a great effect on its floatability.Web
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Flotation of molybdenite was however strongly depressed in sea water at pH higher than 9.5. Frothers were characterized by measuring froth thickness in a modified laboratory flotation cell as a function of pH, salinity, frother type, and solids content (%). It was found that for all tested frothers, foamability in two-phase systems was better ...Web
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Molybdenite is naturally floatable and can be separated from copper sulfide mineral using froth flotation. Properties of molybdenite such as mineralogy, microstructure, surface wettability, zeta...Web
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In the present study, the natural floatability of pure molybdenite was analyzed by using microflotation assays, and hydrophobicity was measured by performing …Web
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The flotation of molybdenite at 106 and 53 µm without and with the addition of MBS was carried out in DI water first. The MBS concentration varied from 0 to 2 mmol/L in line with the previous study to depress pyrite in copper and molybdenum flotation (Mu and Peng, 2019).Fig. 1 (a) shows the flotation recoveries of 106 µm molybdenite. Without the …Web
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Cations like Ca2+ and Mg 2+ are reported to have negative effects on the flotation of molybdenite in alkaline solution, and dispersants and oil collectors need to …Web
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In each flotation test, the test mixture was prepared by adding 2.0 g of sample to 40 mL of deionized water. For single mineral flotation tests, 2.0 g of either talc or molybdenite was used. For the multi-mineral flotation tests, 1.0 g of molybdenite and 1.0 g of talc were combined and. Flotation test resultsWeb
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Flotation—a process of separating "oleophilic" (oil-loving) copper- and molybdenum-sulfides from "hydrophilic" (water-loving) gangue minerals using reagents that modify mineral wettabilities and their affinity to attach to bubbles—is the conventional mineral processing approach for porphyry deposits (Table 5; Laskowski et al., 2013).Web
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Molybdenum, as a rare and strategic metal, is widely used in the metallurgical industry owing to its strength and high-temperature stability (Zhang et al., 2021, Yi et al., 2021). ... Flotation is a water-intensive process, and the flotation efficiency highly depends on the quality of process water (Qiu et al., 2016, Peng et al., 2020). In ...Web
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Depression of molybdenite in seawater and saline waters is mainly induced by the precipitation of colloidal magnesium hydroxide when pH is raised to …Web
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In Fig. 4, the number of size fractions has been reduced to assist in the presentation of these data.For both the molybdenum and copper the recovery is highest in the 20–150 μm range.In the case of molybdenum, the fine −20 μm fraction recovers 10% lower than the optimum size range while for copper, this offset is closer to 5% reflecting …Web
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In this paper relationships between Cu and Mo recovery and pulp frothability in rougher flotation both in fresh water and sea water are considered. Mineral flotation …Web
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Seawater is used in copper-molybdenum flotation plants when fresh water resources are limited. To minimize the negative effect of process seawater on …Web
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Using flotation to extract molybdenum, the molybdenum concentrate grade was increased from 0.036% in the head ore to 0.112%, and the recovery was 81.3%. ... In the flotation process, water glass was used as a dispersant; terpineol was used as a foaming agent; kerosene, butyl xanthate, butylammonium dithiophosphate, and 3030C …Web
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FLOTICOR™ DP sulfide depressants are also generally effective at a lower dosage than NaSH. Eliminates the risk of H2S exposure at all process conditions. Odorless and water soluble. Can be used over a wide pH range. Enables complete replacement of NaSH, unlike competing alternatives. Easy to implement using existing plant equipment and ...Web
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Sodium metabisulfite (MBS) has been widely applied to depress pyrite in copper-molybdenum flotation plants in particular when seawater is used as the main water resource. However, whether MBS ...Web
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The low and highly variable flotation recovery of molybdenum may be a result of several factors, all related to the properties of the molybdenite (MoS 2) mineral.Molybdenite crystal structure consists of hexagonal layers of molybdenum atoms between two layers of sulphur atoms (Fig. 2).Strong covalent bonds act within S–Mo–S …Web
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chambers. The collective copper–molybdenum flotation cycle included basic flotation, control flotationand three concentrate purifications. The crushed ore in the form of a pulp with a density of 30%–35% solid was stirred in a flotation machine with flotation agents for a certain agitation time. otor speed was 1150 revolutions per minute. The rWeb
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The objective of this study is to provide a simple method based on mineralogical analysis to predict the flotation behavior of blended copper-molybdenum ore in seawater and to compare the effect of oxidation degree of each copper-molybdenum ore. The flotation parameter and the blending ratio of copper-molybdenum ore were …Web
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Sodium metabisulfite (MBS) was used in this study for selective flotation of chalcopyrite and molybdenite. Microflotation tests of single and mixed minerals were performed to assess the floatability of …Web
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To minimize the detrimental effect of seawater in Cu-Mo flotation plants, fresh water is often used as a diluent. However, Las Luces copper-molybdenum plant in Taltal (Chile) has successfully operated using seawater for over 20 years without the use of any fresh water (Cisternas and Gálvez, 2018, Moreno et al., 2011).Web
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Abstract. Low flotation efficiency has been suffered in beneficiation of low-grade molybdenum ores due to finer size liberation and crystal anisotropy. As reported, polyethylene oxide (PEO) was proved to improve flotation efficiency of micro-fine molybdenite particles visibly. In this study, PEO was employed to investigate the …Web
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the sump of the HPSA unit and removal of water-soluble sulfates and organics present in the tailings. Despite the initial decrease in flotation performance, the post-HPSA samples showed substantial improvements in recovery of iron and sulfur. Overall, results indicate that HPSA does improve flotation of molybdenite from Cu-Mo bulkWeb
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In bulk copper–molybdenum flotation, xanthates or their mixtures with different hydrocarbon radical ... into portions weighing 250 g and crushed to 70% of the class −0.071 mm in a laboratory ball mill at the ratio solid–water–ball 1:0.5:6. Flotation tests were performed according to the direct bulk flotation scheme obtaining the ...Web
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Seawater was prepared based on the concentrations of salts in the process seawater used in a copper-molybdenum flotation plant, and diluted with different proportions of de-ionized water.Web
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Treatment of process water from molybdenum flotation Ikumapayi Fatai Kolawole1, Jan-Eric Sundkvist2 and Nils-Johan Bolin3 1Division of Mineral Processing and Metallurgy, Luleå University of Technology, SE-971 87 Luleå, Sweden, [email protected] 2&3Division of Process Technology, Boliden Mineral AB, SE-936 81 Boliden, Sweden, jan …Web
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Separation of Copper-Molybdenum Flotation Concentrate by Superconducting High-Gradient Magnetic Separation ... Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China 2 Ganzhou Innovation Center for Water Quality Security Technology at Ganjiang River Basin, Jiangxi University of Science and …Web
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The flotation of molybdenum single mineral was conducted in an XFG hanging flotation cell. 2.0 g molybdenum mineral was mixed with 50 mL distilled water and agitated at 1780 rpm. NaOH solution was added to adjust the pH at about 6.5.Web
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1. Introduction. Molybdenite (MoS 2) is the main source of molybdenum which plays a significant role in the modern society with its principal use as a ferro-alloy in iron and steel industries (Dutta and Lodhari, 2018).Molybdenite is often associated with copper sulfides such as chalcopyrite (CuFeS 2) and chalcocite (Cu 2 S). Conventionally, …Web
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Molybdenite flotation in the bulk copper/molybdenum flotation circuit at Kennecott Utah Copper was studied by means of a combination of plant metallurgical surveys, laboratory flotation tests ...Web
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Froth flotation of molybdenite is commonly achieved using hydrocarbon oils as the collector. The insoluble hydrocarbon oils adsorb on molybdenite surfaces, …Web
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