Conventionally, separation of copper and molybdenum (Cu-Mo) ores has been achieved with sulfide ore bulk flotation followed by selective molybdenum flotation with the addition of a copper sulfide ...

Our range of flotation solutions include frother and collector programs for coal, copper, molybdenum, phosphate, potash, and more. All of our solutions address your process holistically, helping you optimize your flotation circuit to achieve greater selectivity, recovery, grade, and ultimately, cost performance.

Therefore, flotation and leaching, both of which are the first stage of each scenario, of finely-ground ores are of crucial importance to assure the continued supply of metals. This Special Issue will be devoted to collecting papers on recent advances in selective flotation and leaching processes for …

Porphyry Cu-Mo deposits, which are the most important sources of copper and molybdenum, are typically processed by flotation. In order to separate Cu and Mo minerals (mostly chalcopyrite and molybdenite), the strategy of depressing chalcopyrite while floating molybdenite has been widely adopted by using chalcopyrite depressants, such as NaHS, Na2S, and Nokes reagent.

Flotation is the most effective separation method of the mixed copper-molybdenum concentrates.The thesis takes the complicated and mixed copper-molybdenum concentrates of Tibet as the research object.To devise flotation process,the mineral occurrence of mixed concentrates can be identified by the research of process mineralogy and the suitable ...

Additionally, since the pH optimum of float is 7-8 molybdenum optimum selectivity while copper is typically in a pH range of 9-11, the use of a flotation collector bulk molybdenum can improve buoyancy .

A hydroxylated xanthate salt (HXS) was synthesized from ethanol, carbon disulfide, and NaOH. The flotation responses of chalcopyrite and molybdenite when HXS was used as a novel depressant were investigated using bench-scale flotation tests. The bench-scale flotation results indicate that HXS strongly influenced the flotation of chalcopyrite and had little effect on the flotation …

Further, because optimum moly flotation pH is at 7-8 while optimum copper selectivity is typically in the 9-11 pH range, use of a moly collector in bulk flotation can improve floatability. Some mines find that the moly collectors can have a negative impact on copper flotation so testing and evaluation must be conducted to find the optimum moly ...

Conventionally, separation of copper and molybdenum (Cu-Mo) ores has been achieved with sulfide ore bulk flotation followed by selective molybdenum flotation with the addition of a copper sulfide depressant (i.e., sodium hydrosulfide (NaHS)) (Ansari and Pawlik, 2007a, Bulatovic, 2007, Moreno et …

The nickel-molybdenum ore resources were found mainly in specific regions of China, such as Guizhou, Hunan, Zhejiang, and the Eastern Yunnan Province, usually associated with other metals, such as, Se, Re, Au, Ag, Pt, Pd, etc.) [1,2,3,4].The molybdenum minerals in the Ni-Mo ore are mainly jordisite, but the mine also contains various other materials composed of molybdenum and sulfur in ...

Subsequently, to separate molybdenite a selective flotation from the Cu-Mo bulk concentrates is performed by using depressant reagents for copper and iron sulfides. Molybdenite exhibits intrinsic hydrophobicity due to its crystalline structure characterized by layers of trigonal prismatic coordination polyhedra, where each molybdenum atom is ...

This molybdenum flotation circuit, based on 250-500 tons per 24 hours is designed for low-grade molybdenum ore having high-grade streaks and with pyrite-quartz gangue.It is also basically sound for many other friable sulphide ores, such as antimony, silver and even some lead ores. The basic ideas stressed in this moly flotation …

proposed that an appropriate pulp potential in selective flotation of Mo from Cu-MO concentrate should be lower than -400mV [8, 11, 16]. Therefore, Na 2 S addition was made in a stepwise procedure during the flotation experiments, including the addition in the flotation …

[2K] Development of selective flotation from arsenic and molybdenum containing copper concentrates Hajime Miki 1, Gde Pandhe Wisnu Suyantara 1, Tsuyoshi Hirajima 2, Yuji Aoki 2, Shigeto Kuroiwa 2, Keiko Sasaki 1 (1.

The depressive efficiency of sodium silicate, sodium hexametaphosphate, and tartaric acid on the flotation separation of molybdenum oxide from fluorapatite were examined using cetylpyridinium chloride (CPC) as the collector. The corresponding depression mechanisms of all three depressants were studied with the use of laboratory measurements.

Optimization of a Copper/Molybdenum Flotation Circuit by Depressing Pyrite from the Rougher Flotation Stage Using Different Scheme of Reagents A thesis submitted in partial fulfillment of the requirements for the degree of Master Of Science in Metallurgical Engineering by Wander A. Valderrama Dr. Carl C. Nesbitt/Thesis Advisor May 2020

copper sulfide minerals and the selective flotation of molybdenite from copper/molybdenum concentrates. The results of this research program were quite successful, and the University of Utah is now seeking patent protection for this flotation technology (Miller, Ye, and Jang, 1990). The utilization of ozone in the flotation of sulfide minerals

In molybdenum flotation process, it can not only depress lead, zinc, iron, copper and other metal impurity, but also has good effect to decrease silicon, sulphur and other non-metal material. This agent needs only a small dosis, and the usage is easy and convenient, so it can save cost and improve the economic profit.

selectivity for molybdenite, providing a higher molybdenum recovery under low reagent dosage. Moreover, compared with bulk flotation approach, the iso-flotability flotation approach using transformer oil as a collector can obtain superior Mo recovery

On the below Chart, selective flotation (separation) is obtained from the green line (1% mass) to the red line (4.5% mass). After >4.5% mass, you get mass pull, just mass. No selectivity, no concentration. You could float all day and yes get more mass. You could float off the whole tailings if you have enough time.

2,3-disulfanylbutanedioic acid (DMSA) was found to be a selective depressant in the flotation separation of copper- molybdenum sulfides. The flotation results suggest that a low dosage of DMSA has ...

A method and an apparatus for the separation of the mineral components of a pyrite containing copper- molybdenum ore by flotation. The method comprises grinding the ore in the presence of soda ash in an open circuit to produce an aqueous ore slurry; subjecting the slurry to a collective flash flotation step (10) in the presence of soda ash and sodium sulphide to recover a first part of metal ...

Molybdenum minerals are usually associated with copper minerals. The separation of copper-molybdenum sulfide ore depends on the depressant type. Various organic and inorganic depressants have been used for selective depression of the targeted mineral during copper-molybdenum flotation separation (Bulatovic, 2007, Chen et al., 2013, Li et al ...

Edmonton, Alberta, T6G 1H9, Canada. 2. Abstract. Humic acids (HA), a major component of humus or soil, was explored as a selective. depressant for molybdenite during the flotation separation of ...

Danafloat™ – High performance flotation reagents. PRODUCTS. A wide range of flotation dithiophosphate reagents are produced in acid and aqueous solution froms. MINING. Flotation has become a very selective and highly cost efficient process and has become a universally used means for concentrating all types of ores. 1.

US2608298A US19424A US1942448A US2608298A US 2608298 A US2608298 A US 2608298A US 19424 A US19424 A US 19424A US 1942448 A US1942448 A US 1942448A US 2608298 A US2608298 A US 2608298A Authority US United States Prior art keywords flotation concentrate molybdenite sulfides metals Prior art date Legal status (The legal status is an assumption and is not a legal …

subjects the bulk copper-molybdenum sulphide concentrate to a selective flotation technique to separate molybdenite from copper sulphide. Reagents Reagent programs applied for the treatment of porphyry copper and copper-molybdenite ores are relatively simple, and usually include lime as a …

An effective flotation approach is proposed for improving the recovery of molybdenite fines from a finely-disseminated molybdenum ore. To maximize the flotation recovery of molybdenum, process mineralogy of raw ore, contrast tests, optimization of operation conditions and particle size analysis were systematically investigated. Process mineralogy suggests that in the raw ore, 61.63% of ...

Selective flotation of molybdenite from chalcopyrite, which is the most important copper sulfide mineral, was investigated and various surface analyses were done to confirm phenomena and mechanisms of oxidation process for selective flotation. 2. Materials and methods2.1. Materials

Selective flotation of chalcopyrite and molybdenite with plasma pre-treatment. Minerals Engineering, 2014. Mohsen Farahat. Osamu Ichikawa. Masanori Mori. K. Sasaki. Tsuyoshi Hirajima. Mohsen Farahat. Osamu Ichikawa. ... Sulfide Mineral Flotation. By Morgan Zhao. Download pdf.

With the steady increase of molybdenum demand worldwide and the favorable molybdenum market, many technological innovations on both process and equipment have been developed and applied in many modern molybdenum plants around the world. This paper introduces the most commonly used molybdenum flotation flowsheet, together with the introduction of the flotation chemistry.

Solvay provides collectors and extractants that improve floatability and selectivity for molybdenum. Flotation. Molybdenite is the most common molybdenum mineral. Solvay's AERO® brand collectors/promoters enhance and improve the natural floatability of molybdenite.

Selective depression effect in flotation separation of copper-molybdenum sulfides using 2,3-disulfanylbutanedioic acid Trans. Nonferrous Met. Soc. China, 25 ( 2015 ), pp. 3126 - 3132 Article Download PDF View Record in Scopus Google Scholar

Our range of flotation solutions include frother and collector programs for coal, copper, molybdenum, phosphate, potash, and more. All of our solutions address your process holistically, helping you optimize your flotation circuit to achieve greater selectivity, recovery, grade, and ultimately, cost performance.