Pyrite Flotation Optimum

A study on the effect of active pyrite on flotation of …

determine the optimal particle size and grinding time. Then, the optimal chemical conditions of flotation were determined to achieve the maximum grade and recovery of chalcopyrite and the effect of activated pyrite on the chalcopyrite flotation efficiency was investigated. 2. …

Effects of Pyrite Texture on Flotation Performance …

Pyrite particles, having framboidal/altered texture, are known to significantly affect pulp chemistry and adversely affect flotation performance. Therefore, the main objectives of this study were to demonstrate influence of …

Effects of type and dosages of organic depressants on pyrite

At first, the optimal condition for flotation of pyrite were obtained. In flotation without collector and frother reagents, pyrite recovery was 20.63%. By adding pine oil as frother in two concentrations of 40 ppm and 100 ppm, pyrite recovery reached 55.57% and 57.5%, respectively. Then the flotation was examined with collector and frother ...

Lime use and functionality in sulphide mineral flotation: A …

The active surface entities were found to be metal xanthates for chalcocite and bornite, dixanthogen for pyrite, metal xanthate for initial flotation of chalcopyrite and dixanthogen for full flotation. For pyrite, Fuerstenau et al. (1968) found a window for flotation between pH 3 and pH 10 in the presence of ethyl xanthate. The upper limit of ...

Activation flotation of lime-depressed pyrite with carbon …

In this study, carbon dioxide (CO 2) as a potential activator was applied in activation flotation of lime-depressed pyrite. Micro-flotation experiments results showed CO 2 significantly improved the floatability of pyrite, and a maximum recovery of 93.94% was achieved under optimal operating conditions. The activation mechanism was investigated ...

Occurrence Characteristics of Fine-Grained Pyrite in Coal and …

The framboïdal pyrite, agglomerated pyrite, and pyrite coexisting with other minerals with a particle size larger than 37 μm can be easily precipitated in tailings, indicating …

Activation flotation of lime-depressed pyrite with carbon …

In this study, the activation flotation and interaction mechanism of lime-depressed pyrite with CO 2 was systematically investigated through using micro-flotation experiments, Fourier transform …

A study on the effect of active pyrite on flotation of …

Abstract: Active pyrite is one of the most undesirable phenomena in the flotation of porphyry copper ores. Misreported pyrite into copper concentrates decreased the grade and recovery …

Oxygen demand test: A diagnostic tool for determining the optimum …

A mobile flotation facility, based on two 5 L minicells equipped with on-line monitoring of pH, dissolved oxygen and pulp potential, was used to study flotation of pyrite from zinc concentrate (i ...

Recovery of pyrite from copper tailings by flotation

To achieve this grade and recovery of pyrite, it is only necessary to condition the fresh tailings with 30 g/t of collector, 20 g/t of frother, 10 min of conditioning time, adjust the pH to 8 and ...

Cleaner flotation separation of chalcopyrite from pyrite at …

Efficient and clean flotation separation of copper-sulfur has attracted soaring interest in the beneficiation of sulfide ore. The objective of this work was to examine the influence of calcium hypochlorite (Ca(ClO) 2) oxidative modification on the flotation separation of chalcopyrite from pyrite in acid mine drainage (AMD) system.A maximum recovery difference …

Statistical Evaluation of Flotation Behavior of Chalcopyrite in …

The chalcopyrite deposit in Malanjkhand, India, is the largest copper ore producer in the country. However, its flotation performance has room for improvement. This study used standard flotation experiments using a mechanical flotation cell using a conventional collecting reagent and a collector blend consisting of xanthate and ester. A three-factor, three-level Box …

Capstone Announces Mantoverde Optimized Feasibility Study

In line with this, Santo Domingo has initiated a Feasibility Study to assess the optimum process configuration for the pyrite flotation and pumping transportation facilities needed to transport pyrite concentrate to Mantoverde's leach facilities. Exploration in the Mantoverde-Santo Domingo District

Improving Flotation Separation of Mg(OH)>2>-Depressed …

Flotation separation of chalcopyrite/pyrite mixtures under Mg(OH) 2 depression effectively limits pyrite entrainment into Cu concentrates. However, the Cu concentrate is still negatively affected by the low selectivity of depression by Mg(OH) 2 and unavoidable floatability activation of pyrite by surface Cu contamination via galvanic effects. In this study, ethylenediaminetetraacetic acid ...

Fine pyrite flotation in an agitated column cell

The flotation of fine pyrite has been studied in a 0.1 m×1.9 m agitated column. The variables studied were agitation, air and slurry feed rates. ... For example, at the optimum agitation rate of 400 rpm, the pyrite recoveries in the fine, intermediate and coarse fractions were 74%, 96% and 89%, while the corresponding pyrite grades were 75% ...

froth flotation process: Topics by Science.gov

The computation of the near-optimum flotation time as the maximizer of a separation efficiency ... the carbonaceous material is blended with humic acid, a pyrite flotation collector and a frothing agent within a flotation cell to selectively float pyritic sulfur leaving clean coal as an underflow. Selective flotation of inorganic sulfides from ...

Flotation of Copper Sulfide Ore Using Ultra-Low Dosage of

The optimized flotation method using the combined collectors and inhibitors effectively separated chalcopyrite from pyrite, achieving a copper concentrate with 20.08% Cu …

Differential flotation of pyrite and arsenopyrite: Effect of …

Although some level of selectivity was achieved at the selected pH and collector concentration, the flotation recovery of both pyrite and arsenopyrite dropped compared with single mineral flotation. Pyrite and arsenopyrite recovery for DTP reduced from 92.85% and 49.61% in the single mineral study to 78.1% and 36.23%, respectively (Fig. 4 A).

[PDF] A study on the effect of active pyrite on flotation of porphyry

In this study, the effective parameters on the flotation process including grinding condition and chemical parameters were evaluated in order to decrease the active pyrite recovery by flotation. Firstly, optical microscopic and grinding studies were carried out to determine the optimal particle size and grinding time.

Unlocking high-value metals: Efficient flotation techniques …

This study aims to fill the gap by providing detailed insights into the optimal flotation conditions for such complex ores and enhancing the understanding of reagent interactions with non-sulfide and sulfide minerals. ... To improve the lead (Pb) grade in the re-cleaner concentrate and mitigate excessive pyrite flotation, two primary methods ...

Copper extraction from copper smelter slag with pyrite or flotation …

These results were achieved only by sulphating with lesser amounts of pyrite (2.00 g) or flotation tailings (3.00 g). With No. 4, 2014 larger amounts of pyrite or tailings, there was a drastic decline in copper leaching, although they were approximately stoichiometric needed amount for sulphating of 5.00 g of smelting slag.

Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review

Accordingly, pyrite flotation can only be achieved at ranges of pH below 5 and potential below the continuous upper line without the formation of thiosulfate ... reaching its optimum at values of up to pH 9. This reduction corresponds to 40%, where after pH 10, chalcopyrite can coagulate . This coagulation, caused by the added zinc sulfate, is ...

Oxygen demand test: A diagnostic tool for determining the …

Laboratory batch flotation studies and oxygen demand tests were performed to predict the optimum amount of air required for the selective separation of chalcopyrite from pyrite.

A potential ceramic ball grinding medium for optimizing flotation

The CB system performed better than did the CIB system in the flotation separation of chalcopyrite and pyrite. Under the optimal flotation conditions, the Cu grade, S grade, and chalcopyrite recovery of the flotation concentrate in the CB system were 2.90%, 0.70%, and 18.88% higher than those in the CIB system.

Determination of Optimum Conditions to Remove Sulfur …

In reverse flotation, pyrite was floated and apatite particles followed the water. Prior to performing any flotation tests, mineralogical and size reduction studies were carried out. ... Optimum flotation results Ar State Solid content % Frothing time (min) Elemental grades of product % Iron recovery % Sulfur removal % Without desliming 36 7 Fe ...

Depression of pyrite in the flotation of high pyrite low …

In this research work, selective depression of pyrite in the flotation of a low-grade lead–zinc ore containing 31% pyrite was investigated in the absence and presence of Acidithiobacillus ferrooxidans. Pyrite was significantly depressed with these bacteria using the optimum dosage of reagents.

Pyrite activation in seawater flotation by copper and lead …

However, the flotation performance of pyrite is poor in alkaline seawater, due to the formation and adsorption of seawater precipitates on pyrite surface [19].Therefore, more collectors or activators are normally required [15].Previous studies show that copper ions (Cu 2+) are the common activator during pyrite flotation in fresh water [20], [21], [22], where the Cu/Pb …

Froth Flotation of Chalcopyrite/Pyrite Ore: A …

The study of Fairthorne et al. indicated that the flotation of chalcopyrite and pyrite at pH 7 increased with the concentration of O-isobutyl-Nethoxycarbonyl thionocarbamate (IBECTC) and that the flotation rate was …

Solving the mystery of natural pyrite flotation

This work is a detailed examination of the natural flotation behaviour and mineralogical characteristics of ore samples containing different pyrite types to determine the drivers of pyrite flotation. Five different ore domains are subjected to flotation testing that …

Optimal conditions for ammonia leaching of …

Bodsworth, 1994). Copper/chalcocite-rimmed pyrite usually escapes depression in flotation baths to adulterate the flotation concentrate (Chin-Jung and Liu, 1998). One of the most promising approaches to deal with this challenge is to leach the copper/chalcocite from the pyrite particles, using ammonia in the presence of air (Ntuli et al., 2011), so