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The effect of sodium hydrosulfide on molybdenite flotation

The effect of sodium hydrosulfide on molybdenite flotation

Mar 15, 2020 Depressing copper sulfides using sodium hydrosulfide (NaHS) in the flotation of molybdenite is a common practice. However, the effect of NaHS on the flotation of molybdenite is not clear despite a number of studies.

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Flotation of mixed copper oxide and sulphide minerals with

Flotation of mixed copper oxide and sulphide minerals with

Mar 01, 2009 The total and acid soluble copper assays of the tail from Test D were 0.19% and 0.16% Cu, respectively. This shows that the residual copper found in the tail was mainly associated with copper oxide minerals. The total copper, sulphide copper and oxide copper recoveries of 95.5%, 98.2% and 89.4%, respectively.

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Flotation of copper sulphides assisted by high intensity

Flotation of copper sulphides assisted by high intensity

Flotation High intensity conditioning Concentrate recycling Copper sulphide fines abstract This paper describes the effect of the partial concentrate (rougher floated product) recirculation to rougher flotation feed, here named concentrate recirculation flotation – CRF, at laboratory scale. The main

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PDF Role of starch and metabisuphite on pure pyrite and

PDF Role of starch and metabisuphite on pure pyrite and

Effect of NaSH amount for pyrite flotation . . new copper mine flotation machine price. mechanical flotation cell purchase steps. Rougher flotation of copper-molybdenum sulphide ores in seawater was investigated using two different cells: a modified Denver cell and a standard . large dolomite flotation cell buy at the lowest price.. medium river sand flotation machines how to produce more per hour

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efficient coal flotation separation cell

efficient coal flotation separation cell

May 01, 2021 There have been only a few studies on the effects of sulphate addition on the flotation of sulphide ores. For example, sulphate addition (63 mg/L) to a complex sulphide ore showed mixed results on the flotation of the major minerals: Pb recovery increased but Zn recovery decreased while Cu recovery slightly decreased high quality basalt flotation cells. high quality flotation cell how to produce more per hour

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PDF A Review of the Flotation of Copper Minerals

PDF A Review of the Flotation of Copper Minerals

Sulphide ores are the major sources of base metals like Copper, Lead, Zinc, Nickel and Cobalt. Beneficiation of. these base metal sulphide minerals is predominantl y through the froth flotation ...

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Gases affect bubble sizes Froth Flotation Sulphide

Gases affect bubble sizes Froth Flotation Sulphide

As is well known, nitrogen is used in separation of molydbenite from chalcopyrite (minimize oxidation of NaSH), and higher dissolved oxygen levels does improve a number of sulphide flotation rates and separations either directly (i.e. chemically) or due to ORP.

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new river sand flotation machine

new river sand flotation machine

The effect of sodium butyl xanthate (NaBX) and dodecylamine (DDA) as combined collector on the sulphidizing flotation of copper oxide was investigated by flotation test, fluorescent pyrene probe . barite.. high end bluestone flotation machines sell

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mining nahs in pper flotation

mining nahs in pper flotation

The effect of sodium hydrosulfide on molybdenite flotation ... Mar 15, 2020 The role of NaHS and Na 2 S in depressing copper sulfides in flotation is associated with the desorption of thiol collectors and the modification of copper mineral surface properties (Gaudin, 1957, Nagaraj et al., 1986).

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US4090867A Flotation of non sulphide copper ores

US4090867A Flotation of non sulphide copper ores

Flotation of a variety of non-sulphide and mixed sulphide plus non-sulphide copper ores is disclosed. Stabilization of non-sulphide copper mineral surfaces by sulphidization is initially required and a selective complexing agent able to complex with the copper sulphide surface is then added as conditioner. Diphenylguanidine proved to be a highly selective and fast acting surface conditioner ...

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Effect of pH on Pulp Potential and Sulphide Mineral Flotation

Effect of pH on Pulp Potential and Sulphide Mineral Flotation

Control of pH is one of the most widely applied methods for the modulation of mineral flotation. In this study the effect of pH on potential in solution and sulphur minerals flotation is discussed with various electrodes. The electrodes were platinum, gold, chalcopyrite, pyrite and galena. In solution, potentials were linearly dependent on pH with a different slope for each electrode.

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calcium carbonate flotation separation cell how to produce more per hour

calcium carbonate flotation separation cell how to produce more per hour

Jan 01, 2014 The Cu-Mo separation circuits rely on the use of inorganic Cu sulfide depressants such as NaSH, Na2S, and Nokes, which are hazardous, and sometimes require very large dosages for effective depression. small flotation cells price. high end bentonite mechanical flotation cell. river sand. and the effect of flotation gas on the efficacy of the separation. Using nitrogen as flotation gas, the NaSH consumption can be reduced by up . flotation cell yield. large calcining ore flotation machine.

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CHAPTER 7 FLOTATION OF SULPHIDE MINERALS

CHAPTER 7 FLOTATION OF SULPHIDE MINERALS

Lead sulphide is a very insoluble compond so that additions of sodium sulphide (Na 2 S) result in the formation of lead sulphide rather than lead xanthate. 2PbX 2 (s) + S- PbS(s) + 2X The depression effect of S2-depends on pH of the solution. Of all the sulphides listed ,

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Principles and practice of sulphide mineral flotation

Principles and practice of sulphide mineral flotation

Synopsis. This paper presents both the fundamentals of sulphide mineral flotation and the practical aspects of sulphide ore flotation. The fundamental aspects of the flotation of sulphide minerals both in the absence and presence of thiol collectors are discussed in relation to their crystal structure, surface chemistry and electrochemical characteristics.

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Mining Industry Copper Sulfide Ore and Flotation Process

Mining Industry Copper Sulfide Ore and Flotation Process

Jul 09, 2019 1 Types of copper sulfide ore (1) Single copper mineral Its ore characteristic is relatively simple, and the only useful component that can be recycled is copper. The gangue minerals are mainly quartz, carbonate and silicate. (2) Copper-sulfur ore Called copper-bearing pyrite. In addition to copper minerals, iron sulfide can be recovered, and the main mineral of sulfur is pyrite.

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Chelating reagents for flotation of sulphide minerals

Chelating reagents for flotation of sulphide minerals

Sulphide Mineral Copper Sulphide Flotation Test Mineral Flotation Conditional Constant These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Main Copper Sulphide Extraction Process Mining Pedia

Main Copper Sulphide Extraction Process Mining Pedia

Dec 21, 2019 Therefore, froth flotation process is the main mineral process method used for the extraction of copper from copper sulphide. The common collector added in the flotation machine used for the extraction of copper from copper sulphide is xanthate collector, followed by aerofloat and its esters mechanical flotation cell. Actually, the collecting effect is much better if . portable flotation machine hourly capacity. medium copper mine flotation cell.

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efficient gangue flotation machine

efficient gangue flotation machine

Objectives Specific objectives To study the effect of fine particles of kaolinite and montmorillonite on: Floatabilty of copper sulphide minerals Induction time Slime coating Reagent consumption Experimental methodology Samples and reagents-Copper sulphide sample: copper concentrate sample Chemical analysis 23 flotation cells how to produce more.6 Sb % 30.1 As % 0 large construction waste flotation machine price.1 Bi % 1.2 S .. flotation machine. mechanical flotation cell

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Laboratory Evaluation of the Flotation Response of a

Laboratory Evaluation of the Flotation Response of a

optimised. Laboratory batch flotation tests were conducted to determine the effect of two types of gasoil-rinkalore mixtures on the flotation response of a copper cobalt oxide ore sample. The head assay conducted on the initial ore sample showed that it contained about 2.90% of Cu, 0.12% of Co.

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MEI's Barry Wills Flotation '19 Final Report

MEI's Barry Wills Flotation '19 Final Report

Dec 01, 2019 A paper from Japan described the effect of hydrogen peroxide on the separation of copper sulfide minerals and arsenic-bearing copper minerals and there were papers from Germany and China describing the potential role of colloidal silica as a calcite depressant in scheelite flotation, and the adsorption mechanism of gallic acid/ pyrogallic acid ...

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large potash feldspar flotation machine sale at a discount

large potash feldspar flotation machine sale at a discount

A method of depressing copper sulfides and iron sulfides in a molybdenite floatation recovery process uses alkaline or alkaline earth potysulftdes at high concentrate pH. The method of enriching molybdenite content from a slurry having molybdenite and at least one of iron sulfides and copper sulfides can include the steps of adding an effective amount of a depressing reagent selected from one gangue. large bentonite flotation machines craftr. high quality coal flotation separation cell.

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US4268380A Froth flotation process Google Patents

US4268380A Froth flotation process Google Patents

An improvement in the froth flotation separation of metallic sulfide mineral ores, particularly those ores bearing copper and molybdenum, in which a mercaptan collector is used in an earlier primary flotation stage, the improvement comprising the addition of activated carbon to achieve deactivation of the mercaptan collector prior to the component mineral separation stage, thereby providing ...

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environmental flotation machine how to produce more per hour

environmental flotation machine how to produce more per hour

A good correlation between pulp potential and recovery of chalcopyrite and pyrite was found when the potential was varied by addition of H 2 O 2 and NaSH as oxidizing and reducing agents, respectively calcium carbonate flotation separation cell how to maximize productivity. In general, flotation is possible in the mildly to moderately oxidizing region and in slight or absent in reducing solutions for sulfide minerals. ferrosilicon flotation separation cell how to work easier

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flotation machines how to buy at more discount

flotation machines how to buy at more discount

the flotation improved recovery of fine copper particles (−10 μm) [6] large ferrosilicon flotation cells. Houot and Duhamet (1992) reported that sodium sulphide depressed galena and increases selectivity of copper sulphide from other sulphides [7] new glass flotation cell sell. Sodium sulphite was used to improve the separation of copper-activated sphalerite from pyrite in mildly alkaline pH conditions [8 glass flotation separation cell how to buy...

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Effect of Seawater on Sulfide Ore Flotation A Review

Effect of Seawater on Sulfide Ore Flotation A Review

These species, whose speciation depends on the pH and the initial concentration of each element, are harmful for the copper sulfide ore flotation as they can adhere at the mineral surface, which ...

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large mechanical flotation cell buy at the lowest price

large mechanical flotation cell buy at the lowest price

Above comment about reverse flotation is very interesting - certainly routinely employed in copper sulphide-molybdenite separation, where the molybdenite is a natural 'floater' mechanical flotation cell. If chalcopyrite is present, high levels of NaSH will be required to displace the collector. brick and tile

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A study on selective flotation in low and high pyritic

A study on selective flotation in low and high pyritic

flotation in low and high pyritic copper sulphide ores, Separation Science and Technology, 51:13, ... Ackerman et al. studied the effect of collectors on copper sulphides and pyrite separation ...

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mechanical flotation cell supplier

mechanical flotation cell supplier

NaSH is used to depress copper sulphide (calcosine o calcocite, Cu 2 S), but due to the presence of oxygen (O 2) in water and air it is hydrolyzed and HS-ions are formed, causing greater use of NaSH flotation machine. The replacement by nitrogen gas prevents the reaction with oxygen soft rock.

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nash effect in the copper sulphide flotation

nash effect in the copper sulphide flotation

Effects of pH and pulp potential on selective separation selective molybdenite flotation by Na 2 S/NaSH addition, because Na 2 S/NaSH acts as a depressant for copper sulfide in the appropriate pulp potential [7] It was found that changes in pulp potential as an effective factor resulted in dual effects of Na 2 S and NaSH on flotation and depression behavior of sulphide minerals

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Overdose NaHS Depression Froth Flotation Sulphide

Overdose NaHS Depression Froth Flotation Sulphide

The flotation of cerussite is best performed following sufficient preconditioning to precipitate dissolved lead as lead sulphide and to sulphidize the mineral surface prior to collector addition. However, over sulphidizedcerussite will significantly reduce flotation response high end mineral flotation cells buy at the lowest price. Dosage levels of NaHS for galena flotation are significantly lower flotation machine how to work easier.

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Effects of pH and pulp potential on selective separation

Effects of pH and pulp potential on selective separation

selective molybdenite flotation by Na 2 S/NaSH addition, because Na 2 S/NaSH acts as a depressant for copper sulfide in the appropriate pulp potential [7] efficient flotation machines how to produce more per hour. It was found that changes in pulp potential as an effective factor resulted in dual effects of Na 2 S and NaSH on flotation and depression behavior of sulphide minerals. flotation cell

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