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Copper Flotation Depressants

Copper Flotation Depressants

Pyrite depression in copper flotation

Pyrite depression in copper flotation

Feb 05, 2018 Hi all, i just wanted to find out if there are effective pyrite and insoluble depressants in copper flotation. The situation is that every time we dose a depressant to our stream, we end up ...

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Optimization of a CopperMolybdenum Flotation

Optimization of a CopperMolybdenum Flotation

copper and reject iron to establish a base test to compare other reagent schemes with. This work included flotation reagents such as dithiophosphate, thiocarbamate and AERO 3302 promoter as chalcopyrite collectors, fuel oil as molybdenite collector, and sodium sulfite, inc sulfate, calcium hydroxide and potassium dichromate as pyrite depressants

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The effect of a novel depressant on the separation of

The effect of a novel depressant on the separation of

Adding depressants is a common method in selective flotation of copper minerals from ore. So, various sort of polysaccharides and their derivatives have been widely used in the minerals flotation to

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A Review of Recent Advances in Depression Techniques for

A Review of Recent Advances in Depression Techniques for

Sep 01, 2020 Abstract. Read online. Porphyry copper deposits PCDs are some of the most important sources of copper Cu and molybdenum Mo. Typically, the separation and recovery of chalcopyrite CuFeS2 and molybdenite MoS2, the major Cu and Mo minerals, respectively, in PCDs are achieved by two-step flotation involving 1 bulk flotation to separate CuMo

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USE OF NONTOXIC DEPRESSANTS IN THE SELECTIVE FLOTATION

USE OF NONTOXIC DEPRESSANTS IN THE SELECTIVE FLOTATION

Jul 18, 2013 In flotation tests, depression was achieved using non-toxic reagents and consequently individual copper, lead and zinc concentrates assaying 31.68 Cu, 67.69 Pb, 49.79 Zn were obtained with 72, 80 and 57 metal recoveries, respectively.

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US5693692A Depressant for flotation separation of

US5693692A Depressant for flotation separation of

A new depressant for use in enhanced separation of polymetallic sulphides is described. The depressant agent is used in conjunction with conventional collector agents and frothing agents in the flotation separation of copper, nickel, lead, zinc sulphides by depressing iron sulphides such as pyrrhotite, pyrite and marcasite in the tailing.

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CopperLeadZinc ores Danafloat

CopperLeadZinc ores Danafloat

This flotation step is conducted at alkaline pH. In the case where galena is floated and the copper minerals are depressed, copper depression can be achieved by using sodium sulphide, hydrosulfite, lime, cyanide, zinc-cyanide andor ferricyanide complexes. Selection of flotation reagents and frothers is an important, even critical, consideration.

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CopperZinc ores Danafloat

CopperZinc ores Danafloat

The copper flotation tailings are the feed to the sphalerite flotation circuit where the zinc minerals are floated as explained in the lead-zinc flotation section. Sphalerite is first activated with CuSO4 and floated typically at elevated pH for iron sulphide depression. Combinations of xanthate with either dithiophosphate andor ...

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Depressants for froth flotation Sentrachem Limited

Depressants for froth flotation Sentrachem Limited

The partial selective depression of copper sulphides and resultant improvements in molybdenum grade is demonstrated. EXAMPLE 3. A sample of a complex sulphide ore assaying 0,53 copper, 9,5 lead, and 2,6 zinc was wet-milled with a depressant reagent at pH8 and subjected to batch flotation using as collector Senkol 50 a composition containing sodium

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Orfom174 D8 A Viable Replacement for NaHS as a Depressant

Orfom174 D8 A Viable Replacement for NaHS as a Depressant

Jan 01, 2019 The use of organic depressants for flotation systems such as Cu-Mo sulfide bulk concentrates has become increasingly important because of the health, safety and environmental issues surrounding the use of inorganic depressants. Nagaraj et al. 1983 investigated the Cu-Mo sulphide flotation system using a structure-activity study of depressants.

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Selectively Depress CopperActivated Pyrite in Copper

Selectively Depress CopperActivated Pyrite in Copper

Jan 26, 2021 Pyrite depression in the flotation of copper ores is difficult due to the activation of Cu2 ions on pyrite surface. In this study, the radical chain reaction involving the redox cycling of CuIII induced by sodium metabisulphite MBS was exploited to selectively depress the flotation of copper-activated pyrite at pH 8.0. Electrochemical measurements revealed that

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PRODUCTS Best Quality Flotation Reagents Chemical YampX

PRODUCTS Best Quality Flotation Reagents Chemical YampX

4. Strong collector for copper ore to improve the recovery rate of associated gold and silver. 5. Muddy Gangue depressant. 6. Pyrite pyrite, pyrrhotite, arsenopyrite, nickel pyrite efficient depressant. 7. Copper and zinc separation depressant. 8.

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MECHANISM OF SPHALERITE DEPRESSION IN AN

MECHANISM OF SPHALERITE DEPRESSION IN AN

transferred into a 4.3 L flotation cell, conditioned with lime 1100gt, the collector 3418A 30gt in total and frother MIBC 70 L. Each reagent was conditioned for 0.5 minutes, for the flotation, the air flow was set at 2.4Lmin and pH was maintained at 10.5. The total rougher copper flotation time was 7.5min.

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Flotation Behavior of Complex Sulfide Ores in the Presence

Flotation Behavior of Complex Sulfide Ores in the Presence

Jun 12, 2017 In this study, chitosan polymer was tested as a potential selective green depressant of pyrite in the bulk flotation of galena PbS and chalcopyrite CuFeS 2 from sphalerite ZnS and pyrite FeS 2 using sodium isopropyl xanthate as a collector and 4-methyl-2-pentanol MIBC as a frother. Flotation tests were carried out in a D12-Denver flotation

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The Effects of Different Depressants on Oxidised Copper

The Effects of Different Depressants on Oxidised Copper

For refractory oxidised copper ores of Huidong Sichuan province, studing the different depressants on the influence of oxidised copper ores flotation behavior. The results showed that the depressanting effect of the combination of sodium hexametaphosphate primarily is better. When the dosage of the combination of sodium hexametaphosphate and sodium

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The interactive effect of depressant type and dosage with

The interactive effect of depressant type and dosage with

This study investigated the interactive effects of depressant dosage and type, frother dosage and froth depth on the recovery and grade of copper and nickel sulphides, recovery of water, floatable and entrained gangue in the flotation of a Merensky ore.

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Sodium Thioglycolate Flotation Inhibitors CNFREE

Sodium Thioglycolate Flotation Inhibitors CNFREE

Home Product Flotation Conditioners. ... Used as the depressant of copper minerals and pyrite, instead of sodium cyanide, separating mixed copper-molybdenum concentrate with the characteristics of less amount, non-toxic, non-polluting, high efficiency and so on. Online Service.

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PAPER OPEN ACCESS Influence of dextrin on

PAPER OPEN ACCESS Influence of dextrin on

to improve upgrading selectivity. Natural depressants, especially starch and its derivatives, are one of the most significant polysaccharides used in polymetallic sulphide ores flotation. In the paper influence of dextrin on flotation of copper, organic carbon and mineral components from rougher concentrate was investigated.

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DEZINCING OF LEADCOPPER SULPHIDE MINERALS

DEZINCING OF LEADCOPPER SULPHIDE MINERALS

sumption of such depressant agent and may regrind otherwise. Keywords froth flotation, lead-copper-zinc sulphide ore, de-zincing, flotation reagent INTRODUCTION Typical ore that has been received in the labora-tory is required to be tested for understanding the characteristics of lead-copper and zinc sulphide minerals flotation.

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Activators amp Depressants for Mining Kemcore

Activators amp Depressants for Mining Kemcore

Flotation Reagents ACTIVATORS amp DEPRESSANTS PH MODIFIERS ... Copper Sulphate Pentahydrate 96. From 2,415 ... They can make the surface hydrophilic. Both activators and depressants can be either inorganic or organic compounds. Our range includes Sodium ferrocyanide ,Sodium Hydrosulfide NaHS Flakes , Sodium sulphide 60 1500ppm, Sodium ...

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Flotation of NickelCopper Sulphide Ore

Flotation of NickelCopper Sulphide Ore

depressant dosage, 100gt. Relative significance of flotation parameters based on difference between max and min. values indicates that pH has the most significant effect on the recovery of nickel, copper and cobalt during flotation. Analysis of variance showed that pH and depressant dosage were the most significant parameters affecting the

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CHAPTER 3 COMPARISON OF DIFFERENT PYRRHOTITE

CHAPTER 3 COMPARISON OF DIFFERENT PYRRHOTITE

The purpose of this research is to investigate the depression effect of two polymeric depressants S-7260 and S-7261 developed by Cytec Industries by conventional flotation technique, and the possibility of replacing DETA with cheaper polymer depressants in pentlandite pyrrhotite flotation separation. 3.3 EXPERIMENTAL 3.3.1 Mineral Samples

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CHAPTER 7 FLOTATION OF SULPHIDE MINERALS

CHAPTER 7 FLOTATION OF SULPHIDE MINERALS

Depression is ascribed to the strong hydration of chromate adsorbed on the surface. 4. -Cyanide as a depressant CN Cyanide ion does not form a complex with lead ion at moderate concentrations. Hence it does not depress galena. Flotation of Chalcocite Cu 2 S Chalcocite Cu 2 S and chalcopyrite CuFeS 2 are the two most commonly floated copper

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Depression of pyrite in porphyry copper flotation

Depression of pyrite in porphyry copper flotation

Depression of pyrite with Na2SO3and DETA After intense oxygenation Flotation tests on plant rougher con 60 Cp, 18 Py Ore 1 pH 10.5 pH 10.5 0 20 40 0 20 40 60 80 100 Chalcopyrite Recovery 0 20 40 0 4 8 12 16 20 time min

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1 Froth Flotation Fundamental Principles

1 Froth Flotation Fundamental Principles

Froth flotation is a good example of an engineering system, in that the various important parameters are highly inter-related, as shown in Figure 1. It is therefore important to take all of Chemistry Components Collectors Frothers Activators Depressants pH Equipment Components Cell Design Agitation Air Flow Cell Bank Configuration

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Pyrite depression in marmatite flotation by sodium

Pyrite depression in marmatite flotation by sodium

separate copper-activated sphalerite from pyrite in the presence of isobutyl xanthate. It was found that all the PAMs depressed pyrite flotation with little or no sphalerite. SUN et al4 used mercapto organic compound DMPS as depressant in the separation of copper-activated marmatite from pyrrhotite in the presence of butyl xanthate.

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Copper Molybdenum Flotation depressant Barium

Copper Molybdenum Flotation depressant Barium

Flotation is conducted at high pH levels often times greater than 11 using lime to ensure good depression of sulphide minerals, particularly iron sulphides and copper. Other depressants used include cyanide and Nokes reagent thiophosphorous or thioarsenic compounds.

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Copper Sulphide Ore Reagents For Copper Flotation

Copper Sulphide Ore Reagents For Copper Flotation

Flotation of nickel-copper sulphide ore optimisation of.2020-01-08 the flotation recovery of ni cu and co from a nickel-copper sulphide ore.the effect on flotation performance of various parameters such as ph collector dosage solids and depressant dosage

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Alternatives For Sodium Cyanide For Flotation Control

Alternatives For Sodium Cyanide For Flotation Control

This study was made to determine the technical and, if possible, the economic feasibility of substituting alternate reagents for cyanides as depressants for iron in the flotation of copper, lead, and zinc ores. The study was carried out in two phases. The first consisted of a literature search, an evaluation of the data obtained in the search ...

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Sulfidisation Promotion Effect of Ammonium Sulfate on

Sulfidisation Promotion Effect of Ammonium Sulfate on

Copper oxide ores are commonly difficult-to-float due to its molecular structure, and adding sodium sulfide as activator is necessary however, its dosage to the flotation pulp must be strictly controlled, as it is also a powerful depressant for copper sulfide minerals, and will, if in excess, depress the activated copper oxide minerals.

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Best flotation depressant depressant in froth floatation

Best flotation depressant depressant in froth floatation

Flotation depressant is mainly YampX Company special reagents, which has very good effect for oxidized ores, mines with high mud content, etc. Our depressant have a significant effect on the separation of copper and molybdenum, reducing the amount of sodium sulfide and Sodium sulfide and sodium hydrosulfide.

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Dr Yufan Mu UQ Researchers

Dr Yufan Mu UQ Researchers

The depression of copper-activated pyrite in flotation by biopolymers with different compositions. Minerals Engineering, 96-97, 113-122. doi 10.1016j.mineng.2016.06.011. The depression of pyrite in selective flotation by different reagent systems - a Literature review. Mu, Yufan, Peng, Yongjun and Lauten, Rolf A. 2016.

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The Auxiliary Effect of Copper Ions on the Depressant

The Auxiliary Effect of Copper Ions on the Depressant

Sodium thioglycolate is a chalcopyrite depressant, but its depressant effect is weak. The paper investigated the effect of CuSO4 on the depressant performance of sodium thioglycolate towards chalcopyrite through flotation tests, Zeta potential measurements, X-ray photoelectron spectroscopy XPS analyses and Fourier-transform infrared FTIR spectra measurements. It was found that copper

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Flotation experiment research on a polymetallic sulfide

Flotation experiment research on a polymetallic sulfide

selectively with depression of zinc and iron, followed by reflotation of the copper-lead tailing for recovery of zinc9. The polymetallic separation flowsheet of copperlead bulk flotationcopper lead separationpriority floating zinc and pyrite from the bulk flotation tailings was used based on the ore properties.

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Enhancing flotation separation of chalcopyrite and

Enhancing flotation separation of chalcopyrite and

Mar 18, 2021 As for the talc type Copper-Nickel Sulfide Ores, the talc entrained in flotation concentrate with foam will affect the grade of copper sulfide ore, so gum Arabic GA is a good depressant to ...

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Selective separation of galena and sphalerite from

Selective separation of galena and sphalerite from

inorganic pyrite depressants and also specific collectors were used in the appropriate combination using the mixture design method. After achieving an optimum flotation test condition, the effect of auxiliary collector types and pH were evaluated on the flotation of galena, pyrite and sphalerite. 2. Materials and Methods 2.1.

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Flotation Behavior of Complex Sulfide Ores in the Presence

Flotation Behavior of Complex Sulfide Ores in the Presence

Jan 01, 2017 At a dosage of 50 gton, chitosan did reduce the recovery of lead by 4.8 Figure 7 and that of copper by 8.8 Figure 8 as compared to conventional depressant NaCN, which was not desirable as bulk flotation of chalcopyrite and galena was the major focus of

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