Chalcopyrite Flotation Concentrate

Flotation tests on an industrial copper–lead bulk concentrate showed that using this depressant mixture can achieve highly efficient separation of chalcopyrite from galena …

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.

For the flotation concentrate, 12 % of copper was concentrated in bornite, 6 % in chalcopyrite, 4 % in covellite and 3 % in malachite. Chalcopyrite was identified in several studies as refractory sulfides that were resistant to chemical degradation and bioleaching under certain conditions ( Martins and Leão, 2023 ).

Therefore, chalcopyrite flotation is commonly carried out under alkaline condition to reduce the decomposition of xanthate [7]. However, the flotation process faces many challenges, especially when low-grade ores frequently associated with other sulfides such as pyrite (FeS 2), deteriorating chalcopyrite flotation [8]. Therefore, maintaining a ...

A molybdenum (Mo) concentrate assaying 6.00% copper (Cu) and 19.01% Mo was magnetically sorted using a diamond-shaped steel rod medium mesh at a feed concentration of 20% and a pulp flow rate of 5 ...

In flotation, the transport of the particles to the concentrate takes place mainly by two important mechanisms: attachment to the air bubble (true flotation) and transport by water …

behavior of clay minerals in chalcopyrite flotation, there are hardly any studies investigating the flotation parameters that will reduce this negative effect. In this study, it was first determined how ... of the change in concentrate grade and flotation recovery depending on the clay type and amount of clay in the ore. In addition, it will be ...

The sphalerite flotation concentrate was obtained from the Lowshan Processing plant. Particle sizes of a sample range from 150 to 25 μm with a d 80 of 54 ... Free-form fragments of galena, chalcopyrite, and pyrite were also observed. It has been observed that pyrite and chalcopyrite are involved in a few cases. Download: Download high-res ...

The ultrafine chalcopyrite from the nearly pure chalcopyrite specimen showed significant natural hydrophobicity as shown in figure 4. With no KAX, over three-quarters of the chalcopyrite floated. Virtually all of the 20- by 10-µm chalcopyrite was …

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 together …

With the addition of KMnO 4, the flotation of chalcopyrite was effectively depressed, leading to significant improvements in the recovery and grade of chalcopyrite concentrate during reverse …

Developments in Flotation Flotation of Nickel Sulde Minerals Collectorless Wotation It is known that chalcopyrite and pyrrhotite can be Soated without collectors at electrode potentials of #400 mV and #50 mV respectively, and pyrite does not Soat even at #700 mV. The underlying mechanism causing hy-drophobicity, although obscure, is attributed ...

Micro-flotation results show that xanthan gum severely depresses talc flotation but barely affects chalcopyrite flotation at pH 8. In artificially mixed minerals flotation, a concentrate containing 31.87% Cu can be obtained at 90.03% Cu recovery from a feed of 16.94% Cu, indicating xanthan gum as a selective depressant.

Flotation is widely adopted to separate sulfide minerals from talc (Zhong et al., 2021, Farrokhpay et al., 2018, Witney and Yan, 1997).However, in the flotation beneficiation of sulfide minerals, such as chalcopyrite, talc easily enters into copper concentrate due to its natural floatability, then affecting the copper grade in concentrate.

The selectivity index was calculated using the following equation: m b S m b(100 )(100 ) R J I R J â‹… = âˆ' âˆ' (1) where Rm is the molybdenite recovery in the flotation concentrate; and Jb is the chalcopyrite recovery in the tailing fraction.

Removing molybdenite from chalcopyrite by flotation has long been a challenge due to their similar floatability as sulfide minerals. However, the difference in the magnetic susceptibility of the two minerals may be employed to address this challenge. ... a chalcopyrite concentrate assaying 31.47% Cu and 0.44% Mo at 81.93% Cu and 5.56% Mo ...

Chalcopyrite (CuFeS 2) and molybdenite (MoS 2) as typical sulfide minerals are very easy for co-flotation in practice, but their mutual separation consumes a large quantity of flotation reagents, particularly for superfinely associated chalcopyrite and molybdenite as encountered in most porphyry copper deposits.Pulsating high gradient magnetic separation …

Talc in the chalcopyrite flotation concentrate could seriously influence the subsequent Cu metallurgy process as the MgO from the floated talc in the Cu concentrate is a typical high temperature resistant material. Therefore, the talc depressants are very necessary in the talc-type chalcopyrite flotation, and has been the research focus in ...

Separation of chalcopyrite from molybdenite is currently mainly carried out by flotation, but this process is costly because of the extensive use of inhibitors. This study briefly …

Much effort has been expended to develop a hydrometallurgical process capable of treating chalcopyrite concentrate (Dimitrijevic et al. 2009; Abdollahy et al. 2011; Balfour-Cunningham et al. 2016).Biohydrometallurgy has been successfully implemented for oxidation of refractory gold ore and bioleaching of most secondary copper sulfides (Jordan et al.1996; …

Separation effects of sodium polyacrylate (PAAS) and gum Arabic (GA) on flotation of chalcopyrite and magnesium silicate minerals using potassium butyl xanthate (PBX) as collector were ...

The addition of sodium sulfide in a bulk concentrate effectively depresses chalcopyrite flotation and allows the separation of chalcopyrite from molybdenite in ccp-mlb bulk concentrate. ... The results of ccp-mlb bulk separation were compared for traditional flotation (concentrate A, Fig. 6 (a)) and a new, instant flotation scheme (concentrate ...

For chalcopyrite, after treated with carrageenan the recoveries of flotation concentrate were all higher than 80 % and only dropped 5–8 % at pH 2−6. When pulp pH up to 8, the trend of depression effect on chalcopyrite was to …

The flotation test results showed that the copper concentrate grade increased from 16.24 to 29.86%, and the copper concentrate recovery reached 83.55% under low alkali conditions. The selective separation mechanism of the two minerals by PU was revealed through contact angle measurements, ζ-potential measurements, Fourier transform infrared ...

FLOTATION OF CHALCOPYRITE, PENTLANDITE, PYRRHOTITE ORES TABLE 1 Approximate ore compositions Sudbury Thompson Shebandowan Pentlandite 3.0 7.1 5.0 Chalcopyrite 3.7 0.5 2. ~ Pyrrhotite 20 23 20 Quartz 16 28 6 Feldspar 14 24 7 Chlorite 21 - 25 Biotite 11 7 - Amphibole 10 6 < 5 Carbonates 2 < 5 10 Tremolite - - 15 Talc - - 4 SUDBURY …

Two-Stage Flotation. To further depress the chalcopyrite, a two-stage flotation process was designed and its flowsheet is shown in Fig. 9. In the first stage, LCD was used to …

Figure 2b represents chalcopyrite flotation against pyrite. As the pyrite feed grade increased from 5% to 25%, chalcopyrite flotation against pyrite was improved when 30 wt% Cr steel was used as the grinding media, but this improvement was not enough to maintain a high Cu concentrate grade due to a reduced Cu recovery and more pyrite recovered.

DOI: 10.1016/J.MINENG.2021.106967 Corpus ID: 236259260; Pulsating HGMS for industrial separation of chalcopyrite from fine copper-molybdenun co-flotation concentrate @article{Chen2021PulsatingHF, title={Pulsating HGMS for industrial separation of chalcopyrite from fine copper-molybdenun co-flotation concentrate}, author={Luzheng Chen and Tao Xiong …

Flotation tests on an industrial copper–lead bulk concentrate showed that using this depressant mixture can achieve highly efficient separation of chalcopyrite from galena at the natural pH of ...

depending on the bubble size, grade of the concentrate, and the recovery of chalcopyrite flotation. The re sults showed that as the amount of frothers increased, there was a reduction in the ...