A high molecular weight polyacrylamide (PAM) was tested as a potential selective depressant in the differential flotation separation of galena and chalcopyrite using potassium ethyl xanthate (KEX) as a collector. In single mineral flotation, PAM depressed chalcopyrite while galena was floatable.

Chalcopyrite single mineral, supplied by Wushan Copper Mine (Jiangxi, China), was hand-picked then crushed through a jaw crusher and a roll crusher, and …

It was found that calcium lignosulfonate effectively depressed chalcopyrite flotation, but had little depression effect on molybdenite because the adsorption density of calcium lignosulfonate on chalcopyrite was significantly higher than that on molybdenite.

Nowadays, froth flotation of chalcopyrite ore has developed a large number of reagents that make it possible to improve the mineral's buoyancy conditions, …

The effects of agitation strength during agglomeration, the dosage of KAX as surface modifier and the dosage of oil as a bridging liquid are investigated. In addition, the …

The flotation separation of chalcopyrite and galena has always been the focus of production. Benzoic diethylcarbamothioic thioanhydride (BDT) is a novel chelating collector that has shown a certain application strength in the field of sulfide ore flotation.

Efficient and selective flotation separation of chalcopyrite and pyrite in copper-sulfur ores remains a challenging issue in mineral processing. In the present work, a newly-synthesized organic compound morpholine dithiocarbamate propylene ester (MDPE) was first developed as a flotation collector in the chalcopyrite-pyrite system.

Flotation process of Copper-Pyrite minerals. The flotation section is composed of two 8-cell "Sub-A" Flotation Machines. The copper section has four rougher cells, two scavenger cells and two cleaner cells for dual cleaning of the rougher concentrates. The rougher copper froth passes to the cleaner cells and the scavenger …

Carrier-flotation is a method to enhance the recovery by the attachment of fine particles onto larger carrier particles. In this study, the effects of coarse chalcopyrite particles as a carrier on flotation behavior of fine chalcopyrite was investigated by the flotation experiments using 20 g fine chalcopyrite (particle size D 50 = 2.3 µm ...

Two mineral case studies were hereby chosen. In the first place, a synthetic model ore consisting of chalcopyrite (CuFeS2) and quartz (SiO 2) was used to gain a specific understanding on the tendencies of flotation performance in the presence of the studied frother systems.

To investigate the influence of filling materials on the copper sulfide mineral flotation index, this study considers chalcopyrite and filling materials as research objects and explores a series of action mechanisms caused by the dissolution of filling materials through flotation tests and related mechanism detection.

The chalcopyrite and talc minerals used in the experiments were taken from copper ore deposits of the Donggua Mountain in China. In order to conduct the experiments of the flotation kinetics, the chalcopyrite and talc samples in large bulk were first comminuted in a jaw crusher, subsequently ground in a ceramic mill, and then …

In the present study, the effect of clay minerals (kaolinite-montmorillonite) on chalcopyrite flotation was investigated and it was aimed to propose solutions to eliminate the …

In this article, 5-heptyl-1,3,4-oxadiazole-2-thione (HpODT) surfactant was synthesized and originally recommended as a collector for flotation recovery of chalcopyrite, bornite and pyrite. The micro-flotation findings indicated that compared with traditional collectors such as sodium isobutyl xanthate (SIBX) and sodium hexyl …

For the first time, this study investigated the role of Na 2 S responsible for the flotation of pyrite depressed in chalcopyrite flotation through flotation tests and Cyro-XPS (X-ray photoelectron spectroscopy) analyses.

An eco-friendly depressant derived from grape seed extract (GSE) as depressant for flotation separation of pyrite from chalcopyrite under low-alkalinity conditions

One of the problems in flotation is mechanical entrainment and the other is the presence of complex gangues (especially clay minerals). In the present study, it was aimed to determine the effects of clay types (kaolinite, illite, and montmorillonite) on mechanical entrainment parameters (total flotation recovery, real recovery, mechanical …

A review is given of the processing of copper-nickel ores with particular emphasis placed on the rejection of the mineral pyrrhotite which is the prin…

The effects of agitation strength during agglomeration, the dosage of KAX as surface modifier and the dosage of oil as a bridging liquid are investigated. In addition, the separation efficiency of chalcopyrite …

To effectively separte pyrite from chalcopyrite, tetrazine thione group and hydrocarbon chain were combined to synthesize tetrazine thione collectors. The flotation performance of tetrazine thione collectors on chalcopyrite and pyrite was investigated, and the influence of different hydrophobic groups on the flotation performance was …

In this research, the influence of pH, particle size, the type of collector and frother and their concentration was studied on the flotation kinetic parameters, rate …

Here, the adsorption behaviors of Fe3+ on the surfaces of chalcopyrite and pyrite were systematically investigated by micro-flotation tests, infrared spectra studies, X-ray photoelectron spectroscopy analysis (XPS), first-prin-ciples density functional theory calculations and theoretical analysis of the coordination field.

Enhancing flotation separation of chalcopyrite and magnesium silicate minerals by surface synergism between PAAS and GA

Abstract: Clay minerals are known to negatively affect sulfur flotation. In the present study, the effect of clay minerals (kaolinite-montmorillonite) on chalcopyrite flotation was investigated and it was aimed to propose solutions to eliminate the negative effects.

mobile scalpers and wheeled units. Mobile jaw crushers are designed to perform heavy duty mining operations such as breaking Dubai the ministry of environment and water has stopped the activities of 14 crusher and quarry operators across various emirates until they adhere to regulations Querry Crusher Dubai Uae.

This is in conjunction with the proportion and type of carbonyl functional groups generated. A combination of adsorption isotherms and nanoscale characterisation using AFM revealed dissimilar adsorbability and visual morphological features, providing new insights into the depressive actions of oxidized starches during chalcopyrite flotation.

Semantic Scholar extracted view of "Lactic acid as selective depressant for flotation separation of chalcopyrite from pyrite and its depression mechanism" by Guang Han et al.

Agglomeration-Flotation of Finely Ground Chalcopyrite and Quartz: E ects of Agitation Strength during Agglomeration Using Emulsified Oil on Chalcopyrite

Flotation experiments and Zeta potential measurements demonstrate that TBOEX adsorbs densely on the surface of chalcopyrite, while the rich hydroxide on the surface of pyrite hinders the self-assembly of the collector, resulting in …

The gap between floatabilities in the lime and soda ash systems is significantly diminished in the presence of collector. The two curves are practically identical for chalcopyrite when sodium iso-butyl xanthate is present, while some difference remains in the case of pentlandite, especially during initial stages of flotation.