The effect of sodium hydrosulfide on molybdenite flotation in …
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
اقرأ أكثرThe effect of sodium hydrosulfide on molybdenite flotation as a
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
اقرأ أكثرThe Interaction between Ca2+ and Molybdenite Edges and …
minerals Article The Interaction between Ca2+ and Molybdenite Edges and Its Effect on Molybdenum Flotation He Wan 1,2,*, Wei Yang 1,*, Weicheng Cao 2, Tingshu He 1, Yanying Liu 2, Jianbo Yang 3, Lin Guo 3 and Yongjun Peng 4 1 College of Materials and Mineral Resources, Xi'an University of Architecture and Technology, Xi'an 710055, …Web
اقرأ أكثرRecent progress on research of molybdenite flotation: A review
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
اقرأ أكثرReview of the flotation of molybdenite. Part I: Surface properties …
Depression of molybdenite in seawater and saline waters is mainly induced by the precipitation of colloidal magnesium hydroxide when pH is raised to …Web
اقرأ أكثرStudy of Molybdenite Floatability: Effect of Clays and Seawater
In the present study, the natural floatability of pure molybdenite was analyzed by using microflotation assays, and hydrophobicity was measured by performing …Web
اقرأ أكثرDetrimental effect of dissolved natural organic matter
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
اقرأ أكثرThe efficient recovery of molybdenite fines using a novel collector
In this work, a novel collector N-(N-butyl) thiophosphoric triamide (NBPT) was explored to improve the flotation of molybdenite fines.The flotation performance was evaluated through micro-flotation tests, and the interaction mechanism was investigated through Zeta potential, Fourier Transform Infrared Spectrometer (FTIR), adsorption …Web
اقرأ أكثرMineralogical Prediction on the Flotation Behavior of Copper and …
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
اقرأ أكثرProcessing of Copper-Containing Molybdenite Concentrates by
The paper discusses methods of processing copper-containing molybdenite concentrates. A process flow diagram based on roasting with sodium chloride (or carbonate) and subsequent water leaching is presented. The chemistry of sulfide interaction with salt additives is described. The effect of the roasting temperature on copper and …Web
اقرأ أكثرAn investigation of the factors affecting the recovery of molybdenite
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
اقرأ أكثر(PDF) The Effect of Water Quality on Molybdenum …
The effect of water quality on the grade and recovery of molybdenum flotation concentration from a molybdenite (MoS2) …Web
اقرأ أكثرRecovery of Molybdenum from Metallurgical Wastewater by Fe(III
Flotation experiment demonstrates that the precipitation flotation has a satisfactory effect when the addition amount of cationic surfactant is 20 mg/L, and the turbidity of the purified solution is only 1.325. ... Study on the removal of molybdenum from water by chemical precipitation. Water Supply Technol 5:26–27+31. Google Scholar …Web
اقرأ أكثرMineral Processing Solutions
Copper/Molybdenum Flotation Circuit Steps: 1. Grinding. Grinding mills liberate the ore from the gangue material (non-ores: silica, organics), and reduce it to an optimal size for flotation. Water mixes in to form slurry. This helps both in the transportation and separation of the solids. 2. Bulk (Copper-Moly) Flotation ...Web
اقرأ أكثرMolybdenum flotation with safer sulfide depressants than NaSH
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
اقرأ أكثرMolybdenum and its compounds
Most molybdenum compounds are insoluble in water or decompose on contact with water. Readily soluble in water are the molybdates such as ammonium and sodium ... 1.2 Production and use Pure molybdenum is extracted from ores by means of a flotation process. In this process the molybdenum is first obtained as the xide. Molybdenum …Web
اقرأ أكثرTreatment of process water from molybdenum …
The Boliden copper mine in Aitik, north of Sweden is aiming to produce molybdenum as a new product. Due to the use of sodium hydrogen sulphide (NaHS) as a depressant of copper concentrate during the …Web
اقرأ أكثرImproving the Copper-Molybdenum Ores Flotation …
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
اقرأ أكثرThe effect of sodium hydrosulfide on molybdenite flotation in …
Seawater is used in copper-molybdenum flotation plants when fresh water resources are limited. To minimize the negative effect of process seawater on …Web
اقرأ أكثرTreatment of process water from molybdenum flotation
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
اقرأ أكثرThe depression of molybdenite flotation by sodium metabisulphite …
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
اقرأ أكثرReview of the flotation of molybdenite. Part I: Surface properties …
The poor molybdenite flotation behavior in high-calcium water is mainly caused by the fact that Ca 2+ ions can inhibit the adsorption effect of hydrocarbon oils on …Web
اقرأ أكثرRecent progress on research of molybdenite flotation: …
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
اقرأ أكثرCopper–molybdenum ores flotation in sea water: Floatability and
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
اقرأ أكثرPolyethylene oxide assisted separation of molybdenite from …
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
اقرأ أكثرSeparation of Copper-Molybdenum Flotation Concentrate by
Separation of chalcopyrite from molybdenite is currently mainly carried out by flotation, but this process is costly because of the extensive use of inhibitors. This study briefly describes a 7.0T/100CGC low-temperature superconducting magnetic separator and discusses its separation principle as well as the effect of magnetic induction on …Web
اقرأ أكثرImproved flotation of molybdenite from talc using a selective …
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
اقرأ أكثرBubble interactions with chalcopyrite and molybdenite surfaces in
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
اقرأ أكثرReview of the flotation of molybdenite. Part I: Surface properties …
Electrical charge of solid particles suspended in water is commonly estimated from the electrokinetic measurements and the value of the zeta potential. ... A process mineralogy approach to optimize molybdenite flotation in copper – molybdenum processing plants. Minerals Engineering, Volume 157, 2020, Article 106557. Morteza …Web
اقرأ أكثرMinerals | Free Full-Text | Substantiation of New Reagent
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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