Gangue Depressant in Molybdenum Flotation

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

Process of recovering molybdenite by froth flotation ...

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 divalent cations can cause serious selectivity issues.

Molybdenum: mining and processing-Metalpedia

S consumption from 16kg/t to 6kg/t at a constant metallurgical efficiency in rougher flotation. In such a condition, the recovery of 92.88% and the separation efficiency of 90.03% were achieved in flotation of molybdenite, comprising only 3% of copper minerals.


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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:


While there is primary molybdenum mine production, a significant amount of moly is recovered as copper mine by-product. 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.


remove molybdenum by flotation. Posted at:April 24, 2013[ ... remove as much non- sulfide material or gangue as …. Flotation recovery for copper and molybdenum is ... . a flotation process to recover molybdenite from ores; flotation remains the primary isolation process ...

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

Naturally hydrophobic minerals (e.g. molybdenite) can be readily floated • 2. Minerals that are not hydrophobic – Solution: "Collectors" are chemical compounds that selectively react with ... – The probability of flotation of the fine fraction of the gangue (29% of the total mass) is

Recovery of molybdenum and copper from porphyry ore via ...

A method is provided for treating molybdenum concentrates in a roasting furnace having a first roasting zone and at least a second roasting zone, the concentrate containing residual flotation oil in an amount over 2% by weight which during roasting inhibits the roasting capacity of the furnace. The improvement resides in deoiling the molybdenite concentrate, feeding the …

Copper-Molybdenum ores - Danafloat

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.

US4523948A - Roasting of molybdenite concentrates ...

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.

Copper Molybdenum Flotation depressant - Barium Sulphate ...

This volume also included two reviews on molybdenite flotation (Castro, 1979, Shirley, 1979). We feel that considerable advances in understanding of the surface properties and floatability of molybdenite have recently been made and this calls for a new review. 2. Crystalline structure and natural floatability of molybdenite

Molybdenum mining in the United States - Wikipedia

Flotation of a copper sulphide ore from Okiep using thiol . mineralogy showed that the main copper sulphide was bornite (Table I). Other copper sulphides noted were chalcocite, chalcopyrite, digenite and possibly enargite. Pyrite was the main sulphide gangue mineral. The chief silicate gangue phases were pyroxene, quartz and K feldspar.

Minerals Engineering Conferences - Flotation '17

microns down to 5 microns, or smaller. Small plates of molybdenite were observed locked in quartz grains. 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% molybdenite, and 1% pyrite.

copper sulfide flotation copper sulfide gangue

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 possible.18


The flotation tests involved in the systematic evaluation of flotation reagents, ore kinds, flotation flowsheets, particle size distributions, flotation pH values and Na 2 S dosages on the influence of molybdenite recovery. Based on the recommended conditions, the locked cycle tests and industrial tests were carried out.

Minerals Engineering Conferences - Flotation '19

flotation and allows for the return of particles from the froth. ... and gangue. Subsequently, the molybdenite is removed from the copper concentrate. Only the primary separation was considered in this investigation because of its economic ...

US2664199A - Flotation recovery of molybdenite - Google ...

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.

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