Theoretical and experimental investigation of disodium
NaHS is the predominant reagent used to depress copper and iron sulfides and thereby enable molybdenum flotation recovery and grade. However, these inorganic reagents have increasing regulations governing their use and have high consumption rates collectively meaning that the use of alternative reagents, especially organic depressants, …
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Depressing effect of flocculants on molybdenite flotation
Castro and Laskowski (1997, 2004 studied the depressing effect of organic flocculants on molybdenum flotation [18][19][20] [21]. In their studies, polyacrylamide flocculants (PAM) and non-ionic ...
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Development of ore sorting and its impact on mineral processing
In developing the DE-XRT ore sorter, it was established that different thresholds should be set during the sorting. ... Due to the upgrading effect of the ore sorters, however, the amount of molybdenum going to flotation has increased to 4.8 TPH, as opposed to 1.7 TPH in the Base Case. The amount of ROM feed has also increased, …
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Improved flotation of molybdenite from talc using a …
Molybdenite is the main source of molybdenum which is widely used in industry. Due to its excellent natural floatability, it is urgent to develop selective depressants, which is the key to achieve the flotation separation of molybdenite from other sulfide minerals such as chalcopyrite, galena and pyrite.
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A study of mechanisms affecting molybdenite recovery in …
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, mineralogical analysis (QEM-Scan), surface analysis (ToF-SIMS) and contact angle measurements. It was demonstrated that molybdenite …
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Improved flotation of molybdenite from talc using a …
Flotation results showed that the selective flotation of pyrite from galena can be achieved under the preferred reagent scheme, i.e., 400 g/t chitosan (10 kDa), 1600 g/t ethyl xanthate, and 100 g ...
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Molybdenum flotation with safer sulfide depressants than …
This new technology is proven in commercial production of molybdenum concentrate, and it will allow you to eliminate the risk of H2S exposure while maintaining your molybdenum recovery and grade. FLOTICOR™ DP sulfide depressants are also generally effective at a lower dosage than NaSH. Eliminates the risk of H2S exposure at all process ...
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Copper and molybdenum phase analysis result of …
A copper–molybdenum iso-flotability flotation process has been developed to efficiently improve the recovery of molybdenite from Duobaoshan porphyry Cu–Mo ores. The effects of flotation ...
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The effect of sodium hydrosulfide on molybdenite flotation in …
1. Introduction. Molybdenite, the principal mineral containing molybdenum, is closely associated with copper sulfides (Hirajima et al., 2014).The recovery of molybdenite from copper ores is usually achieved by bulk flotation to obtain a copper-molybdenum concentrate, followed by molybdenite flotation against copper sulfides in the presence of …
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Recent progress on research of molybdenite …
The flotation tests of single and mixed minerals confirm that CSD7 can achieve an efficient separation of molybdenite from chalcopyrite, galena and pyrite in a …
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Recent progress on research of molybdenite …
Molybdenite is naturally floatable and can be separated from copper sulfide mineral using froth flotation. Properties of molybdenite such as mineralogy, microstructure, surface …
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Effects of aluminosilicate minerals on copper–molybdenum flotation …
The cycle of collective copper–molybdenum flotation includes the main flotation, control flotation, and three re-cleanings of concentrate. ... this study aims at developing a new concept for ...
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An effective approach for improving flotation …
An effective flotation approach is proposed for improving the recovery of molybdenite fines from a finely-disseminated molybdenum ore. To maximize the …
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Preconcentration of Molybdenum from a Low-grade …
Molybdenum, Primary molybdenum, Flotation, Molybdenite . 1. Introduction . Molybdenum is a versatile metallic element used in ... develop process routes for the recovery of this metal from various resources. At present majority of the requirem ents of molybdenum, amounting to about 940 tonnes, are met ...
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Superconducting High-Gradient Magnetic Separation
A molybdenum (Mo) concentrate assaying 6.00% copper (Cu) and 19.01% Mo was magnetically sorted using a diamond-shaped steel rod medium mesh at a feed concentration of 20% and a pulp flow rate of 5 L/min from a Cu-Mo flotation concentrate with 88% of particles smaller than 23 m using the separator.
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Improving the Copper-Molybdenum Ores Flotation …
The cycle of collective copper–molybdenum flotation includes the main flotation, control flotation, and three re-cleanings of concentrate. In the basic mode, the …
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(PDF) Recovery of molybdenum and copper from porphyry …
A copper–molybdenum iso-flotability flotation process has been developed to efficiently improve the recovery of molybdenite from Duobaoshan porphyry Cu–Mo ores. The effects of flotation ...
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A study of mechanisms affecting molybdenite recovery in a …
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 ...
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The effect of clay minerals on the process of flotation of …
The flotation process has been studied by several authors, highlighting works such as the adjustment of phenomenological models through mathematical programming [40], conceptual and analytical ...
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A study of mechanisms affecting molybdenite recovery in …
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 …
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Improving the Copper-Molybdenum Ores Flotation …
The search for effective reagents for the flotation of non-ferrous metals from mineral raw materials is an actual problem. The article discusses the results of research on improving the technology of processing copper–molybdenum ores using a combined collector emulsion. The object of research was copper–molybdenum ore containing …
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Metals | Free Full-Text | Flotation Separation of Chalcopyrite …
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, …
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Flotation separation of molybdenite from chalcopyrite using
Molybdenite is the main source of molybdenum which is widely used in industry. Due to its excellent natural floatability, it is urgent to develop selective depressants, which is the key to achieve the flotation separation of molybdenite from other sulfide minerals such as chalcopyrite, galena and pyrite.
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Improving the Copper-Molybdenum Ores …
During the Cu–Mo ore flotation using an optimally dispersed microemulsion of the combined collector agent, a collective Cu–Mo concentrate was obtained with a copper content of 18.2% with an ...
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Preconcentration of Molybdenum from a Low-grade …
The special properties of molybdenum bearing alloys like high-temperature resistance, non-corrosive nature and relative strength makes it a critical metal in nuclear applications[1,2,3]. Owing to its strategic applications determined efforts are being made in India to develop process routes for the recovery of this metal from various resources.
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Tiopronin as a novel copper depressant for the selective flotation …
At pH 6, the recoveries of molybdenum are up to 85%, 75%, and 80% while those of chalcopyrite are 15%, 5%, and 20% respectively when flotation tests are carried out with single minerals, mixed ...
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Improving 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 r
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Floatability of chalcopyrite and molybdenite in the …
The conventional 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 ...
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Separation of Copper-Molybdenum Flotation …
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 …
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An investigation of the factors affecting the recovery of molybdenite
Molybdenite is the main source of molybdenum which is widely used in industry. Due to its excellent natural floatability, it is urgent to develop selective depressants, which is the key to achieve the flotation separation of molybdenite from other sulfide minerals such as chalcopyrite, galena and pyrite.
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