selective flotation galena

Selective Flotation of Pyrite from Galena Using Chitosan ...

Pyrite is a major gangue mineral associated with galena and other valuable minerals, and it is necessary to selectively remove pyrite to upgrade the lead concentrate by froth flotation. In this study, the flotation experiments of a single mineral and mixed minerals were performed using chitosan with different molecular weights (MW = 2−3, 3−6, 10 and 100 kDa) as a depressant, ethyl ...


Uncovering the hydrophobic mechanism of a novel ...

The micro-flotation results showed that HAPTC achieved a selective flotation separation of galena against sphalerite at pH around 9.0. FTIR and XPS uncovered that both dithiocarbamate and hydroxamate groups in HAPTC participated in the bonding interaction with Pb sites on galena surface with the formation of Pb-S and Pb-O bonds.


Selective separation of galena and sphalerite from pyrite ...

In this research, the selective flotation of galena and sphalerite minerals was evaluated from a pyrite-rich lead-zinc sample. An optimum mixture of selective collectors against pyrite and also organic/inorganic pyrite depressants was obtained in the flotation of galena and sphalerite by an experimental mixture design. The effect of different collectors and pH values were investigated in the ...


Enhancement of Flotation Selectivity of Sphalerite Using ...

Dec 09, 2015· The selective flotation of sphalerite from a sphalerite–galena mineral mixture was achieved using cellular components of Paenibacillus polymyxa after adaptation to the above minerals. The soluble and insoluble fractions of the thermolysed bacterial cells adapted to sphalerite yielded higher flotation recoveries of sphalerite with selectivity indices ranging between 22 and 29. The protein ...


Selective flotation separation of galena from sphalerite ...

Selective flotation separation of galena from sphalerite via chelation collectors with different nitrogen functional groups Applied Surface Science ( IF 6.707) Pub Date :, DOI: 10.1016/j.apsusc.2021.150956


The selective flotation separation of galena from ...

Request PDF | The selective flotation separation of galena from sphalerite with a novel collector of 5-amyl-1, 2, 4-triazole-3-thione | In this paper, 5-amyl-1,2,4-triazole-3-thione (ATT) was ...


Selective flotation separation of galena from sphalerite ...

More selective collectors are still highly desired to improve the separation of galena and sphalerite, as well as for the expansion of the flotation library of chelation collectors. The functional group is responsible for collector to mineral surface interactions, when the collector has an affinity for the specific metal ion on the mineral surface.


Microbially induced selective flotation of sphalerite from ...

Dec 01, 2013· The selective flotation of sphalerite from a sphalerite-galena mineral mixture has been achieved using cells and extracellular secretions of Bacillus megaterium after adaptation to the chosen minerals. The extracellular secretions obtained after thermolysis of bacterial cells adapted to sphalerite yield the highest flotation recovery of ...


Selective depression mechanism of ferric chromium lignin ...

Selective recovery of chalcopyrite-galena ore by flotation remains a challenging issue. The development of highly efficient, low-cost, and environmentally friendly depressants for this flotation is necessary because most of available reagents (e.g., K 2 Cr 2 O 4 ) are expensive and adversely affect the environment. In this study, ferric chromium lignin sulfonate (FCLS), which is a waste ...


(PDF) Effect of different depressants on galena flotation

An optimum mixture of selective collectors against pyrite and also organic/inorganic pyrite depressants was obtained in the flotation of galena and sphalerite by an experimental mixture design.


The selective flotation separation of galena from ...

Jun 15, 2021· The flotation results (Fig. 4, Fig. 5) demonstrated that ATT was a high selective collector for flotation separation of galena from sphalerite at pH ≤ 10.5. Under pH ≤ 9.8, the flotation selectivity of ATT towards galena against sphalerite was better than that of PAX.


Microbially induced selective flotation of sphalerite from ...

The selective flotation of sphalerite from a sphalerite-galena mineral mixture has been achieved using cells and extracellular secretions of Bacillus megaterium after adaptation to the chosen minerals. The extracellular secretions obtained after thermolysis of bacterial cells adapted to sphalerite y …


SELECTIVE FLOTATION OF GALENA AND SPHALERITE AT …

Chapter 6. Effect of cuprous cyanide, dry and wet milling on the selective flotation of galena and sphalerite 73 main oxidation product in air. Therefore, the ion exchange mechanism between the xanthate and hydroxide and/or carbonate (galena oxidation products) and the subsequent flotation of galena can be affected by the grinding environment.


USE OF NON-TOXIC DEPRESSANTS IN THE SELECTIVE FLOTATION …

Jul 18, 2013· The major sulphide minerals in the ore are chalcopyrite, galena, sphalerite, marmatite and pyrite with corresponding metal amounts of 6.80% Pb, 1.05% Cu and 1.50% Zn, respectively. The ore sample was ground to below 200 ?m and then collective …


Developments in Selective Flotation of Complex Copper-Lead ...

On a Russian Cu-Pb-Zn ore good selectivity against galena and sphalerite was obtained in the flotation of bornite and chalcopyrite as a high grade copper concentrate. Stagewise grinding-flotation with three grinding steps were used to obtain reasonable liberation of …


Dithiophosphate in Selective Flotation of Galena and ...

Nov 06, 2020· Selective Flotations: The data obtained in the selective flotations are shown in Table V. Each selective flotation experiment consists of two parts: part G, the flotation of galena in the presence of cyanide, and part S, the flotation of sphalerite from the tailing of part G using copper sulphate to activate the sphalerite.


Optimisation of the selective flotation of galena and ...

May 16, 2006· A study was carried out to improve the flotation selectivity between galena and sphalerite during the flotation of a Cu-Pb-Zn sulphide composite ore from the Rosh Pinah Mine (Namibia). Xanthate collectors were found to be unselective for the flotation of the Rosh Pinah composite sample.


Selective separation of galena and sphalerite from pyrite ...

Chitosan was exploited as a selective depressant in the differential PbZn sulfide flotation at pH 4 on artificial galena and sphalerite mixtures. The mixtures were prepared in two different ...


Selective separation of galena and sphalerite from pyrite ...

In this research, the selective flotation of galena and sphalerite minerals was evaluated from a pyrite -rich lead zinc sample. An optimum mixture of selective collectors against pyrite and also organic/inorganic pyrite depressants was obtained in the flotation of galena and sphalerite by an experimental mixture design.


smithsonite flotation separation machinery

Selective flotation separation of smithsonite from calcite. Amino trimethylene phosphonic acid (ATMP), an eco-friendly reagent widely applied in industrial production, was employed as a depressant for flotation separation of smithsonite from calcite for the first time.


The Use of Polyacrylamide as a Selective Depressant in the ...

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. Mechanism study indicated that PAM could adsorb on galena through hydrogen bonding, and on ...


sf 37 flotation cell for cu fe mining

Oct 10, 2021· sf cell 37 of flotation for mining cu fe Flotation Behaviorplex Sulfide Ores in the Presence In this study, chitosan polymer was tested as a potential selective green depressant of pyrite in the bulk flotation of galena PbS and chalcopyrite CuFeS 2 from sphalerite ZnS and pyrite FeS 2 using sodium isopropyl xanthate as a collector and 4 methyl ...


Dextrin as a Regulator for the Selective Flotation of ...

Jul 18, 2013· (2007). Dextrin as a Regulator for the Selective Flotation of Chalcopyrite, Galena and Pyrite. Canadian Metallurgical Quarterly: Vol. 46, No. 3, pp. 301-309.


Combinations of different-class collectors in selective ...

Apr 21, 2010· The paper discusses laboratory test data on well-known sulphydryl collectors and new modified dithiophosphates Beraflot used to float monomineral fractions of pyrite, chalcopyrite, galena, and sphalerite. Frothless flotation is employed in flotation tests, IR-spectroscopy is used to identify surface compounds, and technological investigations are based on froth flotation. It is shown that ...


Surface Chemical Studies on Sphalerite and Galena Using ...

Selective flotation tests on a synthetic mixture of galena and sphalerite confirmed that sphalerite could be preferentially floated from galena, which was depressed by the bacterial cells. Selective flocculation tests further demonstrated that galena could be flocculated from sphalerite, which was dispersed in the presence of cells of B ...


THE EFFECT OF MODE OF OCCURRENCE OF GALENA AND …

flotation of sphalerite and pyrite at the concentrator. Although cyanide is an effective depressant in selective flotation of sulphide minerals, considerable amounts of zinc are still recovered together with lead, reflecting poor selectivity during the flotation of galena at Rosh Pinah. High dosages of cyanide are required to overcome this ...


The depressing role of sodium alginate in the flotation of ...

Polymer inhibitors have exhibited excellent depression performance in the selective flotation of metal-ion activated minerals. In this study, the inhibitory role of sodium alginate (NaAl) in the flotation of Ca 2+ -activated quartz was thoroughly explored by zeta potential, dynamic light scattering (DLS), Fourier transform infrared (FTIR ...


Selective flotation of galena using a novel collector S ...

May 15, 2021· The flotation performances of BET, SDD and ADD for galena were compared by raw ore rougher flotation experiment. The flotation scheme is displayed in Fig. 2, and the results are shown in Table 4 . The lead recoveries separately attained 74.21%, 80.32% and 86.42% for ADD, SDD and BET under the same dosage.


The effect of mode of occurrence of galena and sphalerite ...

flotation selectivity between galena and sphalerite. As expected, the flotation selectivity was improved by the addition of sodium cyanide. As stated above, increasing the cyanide dosage above 100 g/t NaCN gave no further improvement in flotation selectivity. The effect of mode of occurrence of galena and sphalerite on the selective flotation T ...


The selective flotation of chalcopyrite against galena ...

The selective flotation of chalcopyrite against galena using alginate as a depressant Minerals Engineering ( IF 4.765) Pub Date :, DOI: 10.1016/j.mineng.2019.105848


OPTIMISATION OF THE SELECTIVE FLOTATION OF …

Effect of cuprous cyanide, dry and wet milling on the selective flotation of galena and sphalerite 70 6.1. Introduction 70 6.2. Effect of grinding environment on the pulp chemistry and flotation 73 6.3. Influence of cuprous cyanide on the flotation recoveries 82 6.4. X-ray photoelectron spectroscopy on the activation of sphalerite 93 ...


The selective flotation of chalcopyrite against galena ...

Sep 01, 2019· The micro-flotation results showed that sodium alginate exhibited selective and strong depressant effect on the galena flotation while had little influence on the chalcopyrite flotation, whether it was added before or after the collector.


Selective flotation of galena using a novel collector S ...

Selective flotation of galena using a novel collector S-benzyl-N-ethoxycarbonyl thiocarbamate: An experimental and theoretical investigation February 2021 Journal of Molecular Liquids 330:115643


The flotation separation of galena and pyrite using ...

Serpentine was tested as a potential selective depressant in the differential flotation separation of galena and pyrite using potassium butyl xanthate (PBX) as a collector. In single mineral flotation, serpentine depressed the −150 + 74 μm and −74 + 37 μm galena while the …