An efficient chalcopyrite depressant for Cu-Mo separation …
1. Introduction. Chalcopyrite and molybdenite are primary sources of Cu and Mo. It has been reported that more than 50% of Cu and 75% of Mo originated from Cu-Mo porphyry ores worldwide [1], [2], [3], in which chalcopyrite and molybdenite coexist closely [4], [5].Thus, the efficient separation of these minerals is crucial to satisfy the high …
Copper recovery from chalcopyrite flotation plant tailings …
Treating chalcopyrite flotation concentrates by hydrometallurgical techniques seems to be the most convenient method for leaching copper due to concerns over air pollution and regulations regarding the emission of sulfur dioxide that result from smelting.
Flotation separation of pyrite and chalcopyrite with …
The separation of chalcopyrite and pyite is not fully solved, and thus more efficient depressants are still needed in industry. This paper used potassium permanganate (KMnO 4) as a pyrite depressant to separate pyrite from chalcopyrite.Flotation and contact angle results indicated that pyrite could be depressed by KMnO 4 at pH 7, while …
A fundamental study of chalcopyrite flotation in sea water …
Chalcopyrite (CuFeS 2) is an important and abundant cupriferous mineral, accounting for 70% of copper resources on Earth (Córdoba et al., 2008, Li et al., 2013).The commonly used technology for copper-bearing ore separation is froth flotation (Liu et al., 2019a, Liu et al., 2019b, Liu et al., 2017).As flotation is a water-intensive process, many …
Mechanism of Mechanical Entrainment in Chalcopyrite …
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 …
Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review
The results of the flotation experiments showed that PCA could selectively depress the flotation of pyrite rather than that of chalcopyrite when using SBX as the collector, and the optimum ...
Identifying true collectorless flotation of chalcopyrite in …
Fig. 2 shows the true flotation recoveries of chalcopyrite and water recoveries from flotation in CaCl 2 solutions with varying concentrations. As can be found, the true …
Minerals | Free Full-Text | Utilization of PMA-EDTC as a Novel …
To address the issue of mediocre separation efficiency of depressants in the copper-lead separation process, this article synthesized a macromolecular organic depressant, polymaleic anhydride-ethylenediaminetetraacetic acid (PMA–EDTC), using a polycarboxylic macromolecule as the backbone and also introducing –N–(C=S)–S– as …
Flotability of Chalcopyrite from the Rudnik Deposit
Potential–pH diagrams for a chalcopyrite–xanthate–H2O and chalcopyrite–NaCN–H2O system at 298 K were constructed to predict depressing components in the flotation of depressed ...
Interface behavior of chalcopyrite during flotation from …
The flotation test of the cyanide tailings was performed using a suspended flotation cell (XFDIV 1.0, Jilin Explora-tion Machinery Plant Co., Ltd., China). The pulp density was 30wt%, and the flotation water was deionized water. The pH of the mineral suspension was first adjusted to the desired value by adding concentrated NaOH or H2SO4 stock ...
Selective separation of chalcopyrite and talc using pullulan …
As a gangue mineral, talc is usually associated with chalcopyrite.Therefore, the depression of talc is required in the field of sulphide mineral flotation.Herein, the depression mechanism of pullulan in the flotation separation of chalcopyrite from talc was investigated via flotation tests and characterisation techniques, such as Fourier …
Highly selective flotation separation of chalcopyrite and …
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.
Floatability of chalcopyrite and molybdenite in the presence …
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. ... At the Yuanjing processing plant, the WO 3 enrichment ratio improved from 17.4 to ...
Machine learning strategies for control of flotation plants
A high throughput screening model of solidophilic flotation reagents for chalcopyrite based on quantum chemistry calculations and machine learning. 2022, Minerals Engineering. ... 3498 raw data from a real-world froth flotation plant were collected, wrangled, and restructured. A designed loss function was embedded in …
Replacing Dichromate with Polysaccharide Depressant in …
ZJ 201 (modified starch) is a non-toxic, odorless, and biodegradable polymeric depressant, which selectively depressed galena in batch flotation tests while chalcopyrite was not significantly affected. In a plant trial, copper-lead separation was successful for the first time without using dichromate. Moreover, the plant process could …
Flotation data for the design of process plants Part 2
disseminated chalcopyrite, sphalerite, galena and tetrahedrite. The flotation plant design was based on extensive benchscale test work (including locked cycle tests) on drill core and many months of operation of a 30 t h2 1 pilot plant using the modified Cleveland Tin Mine processing plant.
A review of pyrrhotite flotation chemistry in the processing …
Introduction. Pyrrhotite is one of the most abundant iron sulfide minerals. It is found in nature to be commonly associated with pentlandite, quartz, ankerite (CaFe(CO 3) 2), pyrite, chalcopyrite, and other sulfide minerals.In many flotation plants, pyrrhotite is rejected to the flotation tailings as a waste product such as in the case of Cu–Ni ores …
Selective Separation of Chalcopyrite from Pyrite
Flotation separation of chalcopyrite from pyrite using lime or cyanides as depressants results in serious problems, such as the blockage of pipelines and environmental pollution. Eco-friendly organics are a future trend for beneficiation plants. In this research, the eco-friendly organic depressant sodium humate (SH) was chosen as a …
Fundamental and flotation techniques assessing the effect …
Fig. 3 shows that in the first 4 min of flotation, the recovery of galena is generally the same across the various water qualities, however after 5 min of flotation it becomes clear that higher galena recoveries are achieved with synthetic plant water of increasing ionic strength. This trend of an increase in particles recovered with increasing ...
Evaluation of the effect of the main parameters on chalcopyrite …
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. In the experimental studies, ζ-potential measurements and flotation experiments were carried …
Highly selective flotation separation of chalcopyrite and …
Obviously, to reduce the consumption of large amounts of alkaline reagents (such as lime) in flotation plants, the flotation of chalcopyrite at over-high pH was …
Flotability of Chalcopyrite from the Rudnik Deposit
Abstract This paper presents a part of the results from flotation concentration examination of pure chalcopyrite mineral from the deposit of the mine Rudnik in the frothless cell. The examinations were performed in seven series. In the first three series, the conditions under which the recovery of chalcopyrite from the Rudnik …
Identifying true collectorless flotation of chalcopyrite in …
1. Introduction. In mineral processing, water is an important medium employed for the conveyance and separation of solid particles, particularly in flotation plants (Michaux et al., 2018).The flotation process requires a substantial amount of water, typically ranging from 3 to 7 tons to float 1 ton of ores, thereby being classified as a …
Flotability of Chalcopyrite from the Rudnik Deposit
Potential–pH diagrams for a chalcopyrite–xanthate–H2O and chalcopyrite–NaCN–H2O system at 298 K were constructed to predict depressing …
Chalcopyrite Floatability in Flotation Plant of the Rudnik …
Part of large-scale industrial test results of milling fineness influence on lead, copper and zinc minerals flotation results in the Rudnik flotation plant are shown in …
Eco-Friendly and Biodegradable Depressants in Chalcopyrite Flotation…
The flotation experiment results showed that at pH 3–8, TG had a significant selective depressive effect on chalcopyrite flotation and it was enhanced with increasing TG concentration, but ...
The Importance of Understanding Mineralogy Drivers for Flotation
The main copper -sulfide minerals present are chalcopyrite (CuFeS2), chalcocite (Cu2S), covellite (CuS), and on occasion copper oxide and elemental copper have also been detected. ... It is known that the flotation plant performance can differ dramatically based on the gold mineralogy of the ore . Routine mineralogical analysis …
Chalcopyrite
Owing to its abundance and economic importance, it is the most demandable natural source for copper worldwide. Today, high grade (>0.4% Cu) chalcopyrite ores are processed through the conventional route of metal extraction such as pyrometallurgy i.e. flotation followed by smelting and refining to recover copper metal.
Challenges and opportunities in the recovery/rejection of …
In the flotation of copper–gold ores, the flowsheet is designed to produce a bulk flotation concentrate of chalcopyrite and gold. The concentrate is later smelted to obtain copper and gold separately. Most copper flotation plants, however, are optimised for copper recovery in terms of collector selection for surface hydrophobisation, ...
Effects of Xanthate on Flotation Kinetics of Chalcopyrite and …
This paper investigated the effects of using or not using potassium butyl xanthate (PBX) as a collector on the flotation kinetics of talc and chalcopyrite. By means of atomic force microscopy (AFM), Fourier-transform infrared spectroscopy (FTIR), a contact angle measuring instrument and particle size analyzer, the underlying causes …