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Selective Flotation of Chalcopyrite and Marmatite by MBT ...

Sep 01, 2019· The effect of NaAl concentration on the flotation performance of chalcopyrite and galena is shown in Fig. 4. As the NaAl concentration increased, the galena recovery decreased significantly but the flotation of chalcopyrite was only very slightly influenced, suggesting that using NaAl is able to selectively separate chalcopyrite from galena.

REACTIONS IN CUBANITE AND CHALCOPYRITE

the former, chalcopyrite flotation recovery and flotation rate constant are generally (a (b) (a) (b) Owusu et al. 6 higher, and the detrimental effect of pyrite is less pronounced. Furthermore, pyrite recovery in the tests at constant collector addition (Figure 3b) was much higher, ...

Sustainable Mining - Solving the Problem of Chalcopyrite ...

Apr 01, 2018· In copper-gold flotation plants, pyrite which is depressed in copper flotation is often floated subsequently with the addition of sodium sulfide (Na 2 S) to recover the associated gold. 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 …

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

Flotation Experiments All chalcopyrite flotation tests were conducted using a hanging trough-type flotation machine (XFGII5–35g, Wuhan Exploration Machinery Factory, Wuhan, China) at 1200 rpm with an airflow rate of 80 mL min 1. Chalcopyrite powder (2 g) with a particle size of 38–75 m was suspended in

Processing of chalcopyrite ore by heap leaching and flotation

The results of chalcopyrite and molybdenite flotation and OM adsorption (Figure 5 and XPS study) on these two minerals indicate that, first, OM adsorption is the cause of the depression of mineral flotation in agreement with similar observations that the adsorption of hydrophilic macromolecules such as humic acid, lignosulfonate, guar gum or ...

Flotation separation of molybdenite from chalcopyrite ...

the former, chalcopyrite flotation recovery and flotation rate constant are generally (a (b) (a) (b) Owusu et al. 6 higher, and the detrimental effect of pyrite is less pronounced. Furthermore, pyrite recovery in the tests at constant collector addition (Figure 3b) was much higher, ...

Analysis of kinetic models for chalcopyrite flotation ...

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. Materials and methods The experiments were performed on copper ore obtained from Sarcheshmeh Copper mine, Kerman, Iran.

(PDF) Influences of collector DLZ on chalcopyrite and ...

Chalcopyrite ore forms the significant fraction of copper deposits in the earth crust. However, it is also the most difficult to treat using conventional ferric leaching methods. Smelting and electro-refining are currently the methods used in treating chalcopyrite concentrate obtained from froth flotation.

chalcopyrite flotation chalcopyrite,

Chalcopyrite Flotation without Collector - Surface . 2020-7-14 The influence factors lie in the grinding condition, pH value of flotation and the pulp potential. On conditions of grinding with ceramic ball mill and pH = 9, the lower limit of pulp potential was 50-100 mV and the upper limits 300 mV (galena) and 600 mV (chalcopyrite) in the ...

Chlorides on Chalcopyrite Flotation - MDPI

The effects of size distribution on flotation kinetics of Chalcopyrite can be seen from the changes of k value in Table 1 and Figure 7. For instance, in model 2, as the size fraction is -0.125+0.098 mm, the value of flotation rate ...

Effects of Xanthate on Flotation Kinetics of Chalcopyrite ...

Chalcopyrite Flotation without Collector - Surface . 2020-7-14 The influence factors lie in the grinding condition, pH value of flotation and the pulp potential. On conditions of grinding with ceramic ball mill and pH = 9, the lower limit of pulp potential was 50-100 mV and the upper limits 300 mV (galena) and 600 mV (chalcopyrite) in the ...

(PDF) Dextrin as a Regulator for the Selective Flotation ...

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 sieved into 5–38 μm size fraction.

chalcopyrite flotation chalcopyrite - trepiniborno.it

In the absence of the flotation reagents, the pyrite particles were highly positively charged over a wide pH range from 4 to 6 with an isoelectric point (IEP) at pH 6.8, while the chalcopyrite ...

A STUDY OF FLOTATION AND LEACHING BEHAVIOUR OF …

Collectorless flotation of chalcopyrite observed under oxidizing conditions using air is thought to be prevalent even in the presence of a collector obscuring the selectivity of the process. Leaching of the mixtures of bornite and chalcopyrite at mass ratios of 1:1, 1:3 and 3:1 are

Investigation of reagents for selective flotation on ...

Apr 01, 2014· Chalcopyrite flotation after regrinding is shown in Fig. 3. Without additional collector, 71% recovery in 8 min of flotation was achieved. As the particle size was reduced, existing surfaces were carried from rougher flotation while fresh surfaces were generated as well.

Recover Ultrafine Chalcopyrite by Flotation

Jul 01, 2010· A representative copper sulfide flotation concentrate, obtained from Sarcheshmeh Copper Mine (Kerman, Iran) was used in all experiments. X-ray fluorescence (XRF) and X-ray diffraction (XRD) analyses of the sample showed 27.73% Cu, 24.59% Fe, 14.82% S, 0.99% Zn and chalcopyrite (CuFeS 2) as the major mineral and pyrite (FeS 2) as the minor one …

E ect of pH on Pulp Potential and Sulphide Mineral Flotation

Chalcopyrite 23.20 0.68 1.62 23.24 Pyrite 0.05 - 0.07 40.52 Sphalerite 0.14 - 66.59 7.84 Galena 0.07 89.90 0.10 2.23 XRF results show that except chalcopyrite and pyrite the other samples were highly pure; the major contaminating elements within the chalcopyrite sam-ple were zinc and lead. The measured lead content

Flotation separation of chalcopyrite from talc using a new ...

Flotation experiments of chalcopyrite and molybdenite mixture sample indicated excellent separation that 95% of molybdenite can be recovered as froth and 93% of chalcopyrite can be recovered as sink. Flotation experiments with real bulk flotation concentration indicated similar separation result compared with current NaHS additive system.

chalcopyrite flotation processing - zazemilipovskestezky.cz

flotation tailings and can be readily recovered by flotation with different flotation reagents. When amyl xanthate is used, 85% of chalcopyrite can be recovered with a copper grade of 14.5% in a single-stage froth flotation. The chalcopyrite flotation concentrate can be sent back to chloride leaching circuits.

Minerals | Free Full-Text | Flotation of Chalcopyrite and ...

Chalcopyrite (CuFeS 2) is the major sulphide mineral for Cu extraction, containing about 70 % of total copper reserves globally within all types of copper bearing ore in mineral processing [,, ].The chalcopyrite has to be enriched by flotation, otherwise smelting would not be applicable.

Minerals | Free Full-Text | Flotation of Chalcopyrite and ...

Dec 23, 2018· Most flotation data can be approximated with the first order kinetic equation. However, this equation frequently provides two, not one, parameters, that is the first order flotation rate constant ...

Effects of size distribution on flotation kinetics of ...

Leaching of the chalcopyrite ore had little effect on its floatability, as indicated by rougher flotation testing. The maximum flotation recoveries, …

Characterization and Flotation of Sulfur from Chalcopyrite ...

Flotation Experiments All chalcopyrite flotation tests were conducted using a hanging trough-type flotation machine (XFGII5–35g, Wuhan Exploration Machinery Factory, Wuhan, China) at 1200 rpm with an airflow rate of 80 mL min 1. Chalcopyrite powder (2 g) with a particle size of 38–75 m was suspended in

Chlorides on Chalcopyrite Flotation - MDPI

Aug 13, 2012· Various collectors were compared in the selective flotation of copper–zinc ore by using isopropyl ethylthionocarbamate (Z-200), buthl xanthate, ammonium dibutyl dithiophosphate, and mercapto benzothiazole (MBT). The latter showed effective selectivity in the flotation of chalcopyrite and marmatite and was selected for a detailed study by using cyclic voltammetry …

The use of Fenton's reagent on selective flotation of ...

The type of collector had greater effect on the chalcopyrite flotation than the other parameters. The recovery and grade of chalcopyrite and pyrite …