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

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

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

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

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

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

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 ing agent; kerosene, butyl xanthate, butylammonium dithiophosphate, and 3030C …Web

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

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

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

In the present study, the natural floatability of pure molybdenite was analyzed by using microflotation assays, and hydrophobicity was measured by performing …Web

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

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

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

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

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

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

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

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

The following equation describes the. overall reaction: S 2 O 32- + 4H2 O 2 → 2SO42- + 2H+ + 3H2O (27) Iron (II) sulphate is used as a catalyst in the Fe nton procedure in order to generate ...Web

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

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

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

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 molybdenite …Web

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

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

Seawater is used in copper-molybdenum flotation plants when fresh water resources are limited. To minimize the negative effect of process seawater on molybdenite flotation, diluting process seawater with fresh water is a common practice. This study was designed to identify whether the dilution of process seawater in copper-molybdenum …Web

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