A case study on marmatite- pyrite/pyrrhotite selective flotation …
However, when sphalerite or marmatite is associated with pyrite and pyrrhotite, the recovery of Cu-activated sphalerite or marmatite by flotation is vulnerable to the disturbance of associated pyrite and pyrrhotite, which can be attributed to the following possible reasons: (1) During the process of copper-activation for sphalerite or …
اقرأ أكثر
Improved flotation separation of sulfide minerals by synthesized
The micro-flotation test results indicate that at a concentration of 5 × 10 –4 mol/L and at pH 7, SPTS displays a remarkable selectivity for galena, and can significantly improve the grade (65 wt%) and recovery (86%) of Pb in the selective flotation of galena from pyrite. The results of FTIR and XPS analyses demonstrate that SPTS adsorbed ...
اقرأ أكثر
Sulfide Mineral Bioflotation Optimization and Prediction by
The highest flotation values were 27.9% for chalcopyrite and 19.5% for galena, and the lowest values were 7.2% for pyrite and 7.5% for sphalerite. The flotation of all four minerals was recorded by adding frother to the process. In these experiments, Pine Oil was used as the frother in two concentrations of 40 ppm and 100 ppm, and the …
اقرأ أكثر
Characterisation of sphalerite and pyrite surfaces activated by …
Influence of the Interaction between Sphalerite and Pyrite on the Copper Activation of Sphalerite. Bo Yang X. Tong Z. Lan Y. Cui Xian Xie. Materials Science, Chemistry. 2018. In this paper, the effect of pyrite on the activation of sphalerite was investigated by micro-flotation, copper adsorption experiments, X-ray photoelectron spectroscopy ...
اقرأ أكثر
Flotation Mechanism of Sphalerite by Sulfuration–Amine Method
Laskowski investigated the flotation behavior of dodecylamine on three single minerals, sphalerite, quartz and pyrite, and found that dodecylamine could be used to separate quartz from sphalerite in the high pH range (pH > 12.0), and also found that using lime and hydrogen peroxide as a combined inhibitor could inhibit pyrite effectively ...
اقرأ أكثر
A review of flotation and selective separation of pyrrhotite: A
However, problems arise when a part of non-magnetic, hexagonal pyrrhotite is present in ore samples or when dealing with pyrrhotite entrainments within magnetic ores, such as magnetite and iron-bearing sphalerite [14]. Therefore, flotation is commonly used instead of magnetic separation to achieve the separation of pyrrhotite [15].
اقرأ أكثر
Correlation between copper-activated pyrite flotation and surface
The effect of pulp oxidation potential, Eh, on the flotation of copper-activated pyrite at pH 9.0 in the presence of xanthate was investigated. It was found that pyrite recovery is at a maximum value when the Eh during conditioning is approximately 35 . mV (SHE), but decreases at lower and higher Eh values.. Solution and surface analytical …
اقرأ أكثر
Principles and practice of sulphide mineral flotation
galena, chalcopyrite, sphalerite, pyrite, chalcocite and molybdenite. Traditionally, these minerals have been separated from each other using relatively simple flotation schemes to process high-grade, coarse-grained ores. Because of the depletion of these easy-to-process ores, however, flotation scientists and engineers are
اقرأ أكثر
Investigations of Monomineralic Flotation of Galena, Sphalerite, …
The largest observed yield variation in relative terms could be noted for pyrite flotation while, in absolute values, galena was impacted more than pyrite and sphalerite . Conversely, based on the distributions of flotation rate constants for galena and pyrite, there is a distinct shift of the f(k) curves towards lower values at lower …
اقرأ أكثر
A DFT-based method to determine the hydrophobicity
Introduction. Flotation is a selective separation process for recovering metals from minerals, including the separation and enrichment of chalcopyrite, galena, molybdenite, sphalerite, pyrite, and other metal-bearing sulfide minerals [1].
اقرأ أكثر
Pyrite flotation in the presence of metal ions and sphalerite
Bo Yang X. Tong Z. Lan Y. Cui Xian Xie. Materials Science, Chemistry. 2018. In this paper, the effect of pyrite on the activation of sphalerite was investigated by …
اقرأ أكثر
Hotspots and trends of sphalerite flotation: Bibliometric analysis
The existing research status of sphalerite flotation is analyzed, mainly through 50–100 relevant papers, to summarize and conclude the research in a certain aspect. An example of highly cited papers includes "a review of the fundamental studies of copper activation mechanisms for selective flotation of sulfide, sphalerite, and pyrite [1 ...
اقرأ أكثر
Application and depression mechanism of sodium sulfite on galena-pyrite
Galena, sphalerite, and pyrite are important metallic sulfide minerals and are often associated with one another. In the flotation separation of galena-pyrite mixed concentrate, large amounts of lime (CaO) are used for the depression of pyrite. ... Ltd). In galena and pyrite bulk flotation, Na 2 S was used as an activator of Pb oxide, ZnSO 4 ...
اقرأ أكثر
Pyrite flotation in the presence of metal ions and sphalerite
Pyrite flotation in the presence of metal ions and sphalerite - ScienceDirect Article preview Abstract References (27) Cited by (112) International Journal of Mineral …
اقرأ أكثر
Effect of regrinding conditions on pyrite flotation in the presence of
Flotation of sphalerite and pyrite in the presence of sodium sulfite. Int. J. Miner. Process. (2001) View more references. Cited by (57) Nitric acid treatment of a pyrite rougher concentrate to oxidise differentially the pyrite types and modify the Au:S ratio in a resulting cleaner concentrate.
اقرأ أكثر
Flotation of sphalerite and pyrite in the presence of sodium sulfite
The effect of sodium sulfite on pyrite flotation is more pronounced than on sphalerite flotation with flotation recoveries being reduced by half at a sodium sulfite …
اقرأ أكثر
Minerals | Free Full-Text | Effects of Different Grinding Media and
It has been stated that it is possible to perform pyrite flotation at alkaline pH depending on the changes in pulp potential when forged steel grinding media are used instead of chrome steel with different ... dry and wet milling on the selective flotation of galena and sphalerite. Miner. Eng. 2006, 19, 1–11. [Google Scholar] [Green ...
اقرأ أكثر
Combined microflotation effects in polymetallic ores beneficiation
Pyrite is a more flotation-active mineral compared to sphalerite minerals. The pyrite content in the rough concentrate does not increase significantly despite the large flotation activity. This is explained by the fact that minerals Zn, Fe are very sensitive to the depressing action of cyanides.
اقرأ أكثر
Advances in depressants used for pyrite flotation separation
Here, based on the commonly used pyrite depressants, recent studies on the surface properties of sulfide minerals, flotation characteristics of reagents, and …
اقرأ أكثر
Critical importance of pH and collector type on the flotation of
In Gushfil flotation plant, galena is firstly floated in the lead circuit while sphalerite and pyrite are depressed by NaCN and ZnSO 4. In the zinc flotation circuit, sphalerite is activated using ...
اقرأ أكثر
Formation of hydrogen peroxide by sphalerite
This mechanism that an increase in sphalerite proportion, the concentration of H 2 O 2 decreases could be a better explanation for the results where a significant depression of activated pyrite flotation in the presence of sphalerite at all pH values happened with recovery continuously decreasing to nearly 2% with increasing sphalerite …
اقرأ أكثر
Galena
If a pyrite concentrate is required, this can usually be obtained by sending the tailing of the zinc flotation section direct to a third stage, where the iron sulphides are floated with the addition of 0.05-0.15 lb. per ton of pine oil and 0.1-0.2 lb. of ethyl and/or amyl xanthates, the latter reagent being specially suitable for the purpose.
اقرأ أكثر
Flotation separation of pyrite and chalcopyrite with potassium
Effect of pH on the flotation behavior. Previous studies have demonstrated that the slurry pH is a vital factor for pyrite and chalcopyrite flotation (Zhang et al. 2023b).Here, the influence of pH on the depressing capacities of KMnO 4 (3 min of treatment) for pyrite and chalcopyrite were determined by flotation tests in the pH …
اقرأ أكثر
Pyrite Flotation Separation and Encapsulation: A Synchronized
Pyrite flotation is a well-known and inexpensive method (Moslemi and Gharabaghi 2017; Santander and Valderrama 2019; Wang and Forssberg 1991) because flotation chemicals and process water can be almost completely recycled due to the coarse particle size of the hydrocyclone underflow. In Peru, four companies have programmed …
اقرأ أكثر
The flotation separation of sphalerite from pyrite through a novel
Using FeCl3 as the depressor against pyrite and CuSO4 as the activator for sphalerite, APTT realized a selective and efficient flotation recovery of sphalerite from …
اقرأ أكثر
Effect of lattice defects on the electronic structures and floatability
The effect of the three types of lattice defects on the pyrite floatability was explored. The calculated results showed that the band-gaps of pyrites with Co-substitution and intercrystalline Au decreased significantly, which favors the oxidation of xanthate to dixanthogen and the adsorption of dixanthogen during pyrite flotation.
اقرأ أكثر
The flotation separation of sphalerite from pyrite through a novel
Using FeCl3 as the depressor against pyrite and CuSO4 as the activator for sphalerite, APTT realized a selective and efficient flotation recovery of sphalerite from pyrite in the weakly-acidic medium.
اقرأ أكثر
Flotation of Pyrite
The recovery of zinc, as sphalerite, is generally higher than that of either pyrite or chalcopyrite, using the standard oils and oil-mixtures tried. ... Effect of Size of Mineral Grain on the Flotation of Pyrite. Sample mixture No. 4, used in these tests, was prepared in a manner similar to sample mixtures Nos. 1, 2 and 3, except that it was ...
اقرأ أكثر
Flotation of sphalerite and pyrite in the presence of sodium sulfite
One explanation for the high flotation of pyrite in alkaline pH conditions is its inadvertent activation by copper either dissolved from copper minerals present in the ore …
اقرأ أكثر
Pyrite flotation in the presence of metal ions and sphalerite
Mixed-minerals competitive adsorption The presence of sphalerite did not materially affect pyrite flotation when metal ions were absent. However, with metal ions …
اقرأ أكثر