flotation gangue molybdenite

Recent progress on research of molybdenite flotation: A ...

Gangue minerals like talc and kaolinite can depress the flotation of molybdenite because Mg and Ca ions dissolved from their surfaces can precipitate on molybdenite as hydrophilic colloids. To achieve the best recovery of molybdenite, an appropriate range of particle size needs to be utilized.

Gangue Depressant in Molybdenum Flotation

Aug 06, 2017 · The recovery of molybdenite is independent of the variables investigated. The rejection of sulfide impurities from the molybdenite concentrate is dependent on the conditioning time of Nokes reagent. In the absence of depressants, the rejection of sulfide impurities, with the exception of pyrite, is independent of the pH in the flotation circuit.

Separation of talc and molybdenite: challenges and ...

Nov 01, 2019 · The Anaconda Corporation reported that the combination of lignosulfonate and lime (CaO) could selectively depress the molybdenite flotation while allowing the gangue minerals (mostly talc) to float. Hence, a locked cycle circuit, as shown in Fig. 13, was developed for the purification of molybdenite bulk concentrate. The molybdenite bulk ...

Review of the flotation of molybdenite. Part I: Surface ...

Mar 10, 2016 · Particle size is a very important factor affecting flotation properties of molybdenite. In porphyry copper–molybdenite ores the flotation conditions (grinding, reagents, bubble size, etc.) all are optimized with respect to Cu and not Mo. Fig. 2 shows that the optimum flotation particle size for molybdenite is around 20 μm, and the size fraction 6.8 μm exhibits the lowest recovery and ...

Molybdenum Ore Processing by Flotation

May 05, 2016 · 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 flowsheet are the importance of simplicity and the quick removal ...

INVESTIGATION OF EFFECTIVE PARAMETERS FOR

Interactions with gangue minerals Flotation schemes for the separation of molybdenite from ores are based on the inherent natural flotation of molybdenite. Chander and Fuerstenau (1972) undertook a detailed investigation to elucidate the factors that affect the surface properties of MoS 2 which in turn govern the natural flotation of molybdenite.

INVESTIGATION OF EFFECTIVE PARAMETERS FOR

Interactions with gangue minerals Flotation schemes for the separation of molybdenite from ores are based on the inherent natural flotation of molybdenite. Chander and Fuerstenau (1972) undertook a detailed investigation to elucidate the factors that affect the surface properties of MoS 2 which in turn govern the natural flotation of molybdenite.

Process of recovering molybdenite by froth flotation ...

In the separation of molybdenite from a mineral aggregate including other sulphides such as iron and copper sulphides, and gangue materials, by froth flotation, the improvement which comprises: subjecting such a mineral aggregate to an aging treatment to effect an oxidation of such other sulphides by heating such aggregate at a superatmospheric ...

Optimization of a Copper/Molybdenum Flotation Circuit by ...

deposits also contain other minerals such as molybdenite as a secondary mineral, and (among other minerals) pyrite and silicate as gangue minerals (9). Sulfide copper ores contain by-product molybdenite, a major by-product mineral from copper concentrators. The global molybdenum production has a use of 50% as an alloying agent in the steel

Molybdenum Processing - IMOA

The milled ore/gangue powder is mixed with a liquid and aerated in the flotation step. The less dense ore rises in the froth to be collected, while the gangue sinks to be discarded. Flotation separates the metallic minerals from the gangue this way and – in the case of copper/ molybdenum ores – separates molybdenite from copper sulphide.

US3811569A - Flotation recovery of molybdenite - Google ...

A process for separating molybdenite from copper concentrates containing copper and iron sulfides, gangue materials and an organic collector comprising (1) conditioning the concentrate in aqueous suspension at a pH below about 7 with a soluble metal salt; (2) contacting the so treated concentrate with hydrogen peroxide at pH of about 4 to about 8; (3) subjecting the concentrate from (2) to a ...

Copper Molybdenum Flotation depressant - Barium Sulphate ...

The standard flow sheet consists of bulk sulphide flotation of copper and molybdenite while depressing gangue and iron minerals in the rougher and cleaner circuits. Recovery of copper is by standard flotation reagents identified in the copper ore flotation description. Molybdenum will float naturally with the copper but can be crowded in the ...

Mose Eggleston Kelley Submitted in partial fulfillment of ...

flotation methods, or in the event that this was not found feasible, to find a reagent combination that would permit tho. ... gangue slime, or activating tho molybdenite. She qualitative results of most .of the teats, as indicated in Table 1, wore negative. General conclusions

A New Approach to Selectively Reject Naturally Hydrophobic ...

Mar 30, 2021 · Over the past several decades, many studies have been carried out to separate the hydrophobic gangue mineral talc from molybdenite by froth flotation and other techniques.

Danafloat

The standard flow sheet consists of bulk sulphide flotation of copper and molybdenite while depressing gangue and iron minerals in the rougher and cleaner circuits. Recovery of copper is by standard flotation reagents identified in the copper ore flotation description.

Studies on the Flotation of Molybdenite ...

In the rougher flotation of molybdenite ore, high concentrate grade and recovery can be obtained by selecting the proper ratio of silica to soda and suitable concentration of sodium silicate to be added. Sodium silicate having the ratio of silica to soda 2 : 1 shows the most effective depressing action on gangue minerals. The minimum content of ...

The Interaction between Ca2+ and Molybdenite Edges and Its ...

The negative impact of calcium ions in process water on the flotation of molybdenite from Cu-Mo ores has been reported in a number of studies [8,9,10].The negative impact of calcium ions has been attributed to the bridging role of calcium ions which promote the coating of fine gangue (e.g., quartz) particles on molybdenite.

OPTIMIZATION OF FLOTATION PARAMETERS FOR

Optimization of flotation parameters for beneficiation of a molybdenum ore 525 found in low-grade ores and associated with copper sulfides. In order to produce molybdenite concentration, firstly, a bulk copper-molybdenum concentrate is obtained by floating Cu-Mo together. Secondly, molybdenite is enriched selectively by

Effects of pH and pulp potential on selective separation ...

molybdenite has been achieved with sulfide bulk flotation followed by selective molybdenite flotation by Na 2 S/NaSH addition, because Na 2 S/NaSH acts as a depressant for copper sulfide in the appropriate ... quality of separation between gangue and valuable mineral. It can can

Mineral Processing Solutions

Flotation – Sulfides . Copper and moly are often found together as sulfides*†. Sulfides in solution will float or sink with the right combination of chemicals and gas bubbles (froth flotation). These sulfide ores are separated from gangue (waste) material, then from each other, by froth flotation. Copper /Molybdenum Flotation Circuit Steps:

Recent progress on research of molybdenite flotation: A ...

Over the past several decades, many studies have been carried out to separate the hydrophobic gangue mineral talc from molybdenite by froth flotation and other techniques.

US3811569A - Flotation recovery of molybdenite - Google ...

A process for separating molybdenite from copper concentrates containing copper and iron sulfides, gangue materials and an organic collector comprising (1) conditioning the concentrate in aqueous suspension at a pH below about 7 with a soluble metal salt; (2) contacting the so treated concentrate with hydrogen peroxide at pH of about 4 to about 8; (3) subjecting the concentrate from (2) to a ...

Frontiers | The Behavior of Gangue During the Flotation of ...

Mar 18, 2020 · Similar to what has been shown in this present work on the depression of gangue, an investigation into the role of Ca 2+ ions on the surface properties of molybdenite in copper porphyries by Li et al. (2015) showed that the floatability of fine molybdenite particles decreased significantly when Ca 2+ ions and silica coexisted in the flotation pulp.

Effects of pH and pulp potential on selective separation ...

molybdenite has been achieved with sulfide bulk flotation followed by selective molybdenite flotation by Na 2 S/NaSH addition, because Na 2 S/NaSH acts as a depressant for copper sulfide in the appropriate ... quality of separation between gangue and valuable mineral. It can can

1 J.W. Blossom, Molybdenum, from Minerals Yearbook

The following wastes may be generated by extraction and beneficiation operations: gangue, flotation tailings, spent flotation reagents, and wastewater. 16,17 The tailings from molybdenite concentration are not expected to exhibit any hazardous characteristics, but metal leaching and acid formation are

Face or Edge? Control of Molybdenite Surface Interactions ...

Oct 09, 2019 · Molybdenite, MoS 2, a 2-D transition metal dichalcogenide, is a potential substitute for graphene.Molybdenite mineral particles are separated from gangue minerals by flotation, a process often performed in saline waters, where the presence of

CN101927213A - Flotation separation method for molybdenite ...

The invention discloses a flotation separation method for molybdenite and galena, which comprises the following steps of: 1, rough grinding; 2, rough selection and scavenging for obtaining lead-containing molybdenum rough concentrate; 3, regrinding after a certain amount of active carbon is added into the lead-containing molybdenum rough concentrate; and 4, multiple selection: selecting the ...

ANTARES REPORTS HAQUIRA EAST SULPHIDE MINERAL

Molybdenite books exhibit inter-plate gangue that may require fine grinding for liberation. Sulphide minerals in Composite No. 2 are comprised of approximately 50% bornite, 45% chalcopyrite, 4% ... cleaner flotation stages for the molybdenite upgrading circuit is unknown at this stage of scoping study.

The Interaction between Ca2+ and Molybdenite Edges and Its ...

In this paper, the influence of Ca2+ on the flotation of a skarn type molybdenum ore and pure molybdenite mineral at pH 8 was studied using diesel as the collector. It was found that Ca2+ had little effect on molybdenum flotation at low concentrations. By further increasing Ca2+ concentration, the floatability of molybdenite—especially from the fine size fractions—was depressed even ...

Depressing effect of flocculants on molybdenite flotation

The quality of recycled process water is an important issue in the flotation of Cu–Mo ores. Processing of Cu–Mo ores includes two steps: a bulk flotation where molybdenite is recovered together with Cu sulfides, and a subsequent selective flotation

Molybdenite flotation from copper/molybdenum

Molybdenite flotation from copper/molybdenum concentrates by ozone conditioning Y. Ye, W.H. Jang, M.R. Yalamanchili, and J.D. Miller Abstract—Typically, rougher molybdenite flotation and recovery from bulk copper! molybdenum concentrates involves the use

Selective flotation of chalcopyrite and molybdenite with ...

The selective flotation of chalcopyrite (CuFeS 2) and molybdenite (MoS 2) was studied using surface oxidation treatments (i.e., ozone (O 3) and hydrogen peroxide (H 2 O 2)).The results indicated that the oxidation treatments had different effects on the wettability of chalcopyrite and molybdenite.

Tailings Mineral Industry Solution - westech-inc

These sulfide ores are separated from gangue (waste) material, then from each other, by froth flotation. Copper /Molybdenum Flotation Circuit Steps: Grinding. Grinding mills liberate the ore from the gangue material (non-ores: silica, organics), and reduce it to an optimal size for flotation

Column Flotation - SGS

Today column flotation has become . an accepted means of froth flotation for a fairly broad range of applications, in particular the cleaning of sulfides (copper, zinc, lead and molybdenite) and the flotation of iron ore, phosphate and coal. Flotation columns differ dramatically from mechanical flotation machines in . several ways:

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