Effect of pyrite textures and composition on flotation …
XPS spectra for concentrate and tails samples of pyrite-rich Mount Isa copper ores (Grano, 1990) showing the presence of carbon in the pyrite (Binding Energy (eV), g-graphitic, c-carbonate). Test carried out under nitrogen purge conditioning at pH 8, in the absence of collector. ... Pyrite flotation recovery as a function of solution potential ...
Flotation separation mechanism for secondary copper …
The artificial mixed-mineral experiment indicated that EIBXAC could improve the grade of the copper concentrate while maintaining the same recovery, it had higher efficiency and selectivity. ... Compared with the change in the recovery of pyrite flotation, when the dosage of ADD was 15 mg/L, the recovery of pyrite was 73.10%, which was …
Selectively Depress Copper-Activated Pyrite in Copper Flotation …
Pyrite depression in the flotation of copper ores is difficult due to the activation of Cu2+ ions on pyrite surface. In this study, the radical chain reaction involving the redox cycling of Cu(I/II) induced by sodium metabisulphite (MBS) was exploited to selectively depress the flotation of copper-activated pyrite at pH 8.0. Electrochemical …
Molybdenum Ore Processing by Flotation
This molybdenum flotation circuit, based on 250-500 tons per 24 hours is designed for low-grade molybdenum ore having high-grade streaks and with pyrite-quartz gangue.It is also basically sound for many other friable sulphide ores, such as antimony, silver and even some lead ores. The basic ideas stressed in this moly flotation …
Effect of pyrite textures and composition on flotation …
XPS spectra for concentrate and tails samples of pyrite-rich Mount Isa copper ores (Grano, 1990) showing the presence of carbon in the pyrite (Binding Energy …
Flotation of Pyrite
The concentrate is then thoroughly mixed, placed in a paper bag, and later analyzed. ... Effect of Size of Mineral Grain on the Flotation of Pyrite. Sample mixture No. 4, used in these tests, was prepared in a …
Selectively Depress Copper-Activated Pyrite in Copper …
Pyrite depression in the flotation of copper ores is difficult due to the activation of Cu2+ ions on pyrite surface. In this study, the radical chain reaction …
Application and depression mechanism of sodium sulfite on galena-pyrite
In the flotation separation of galena-pyrite mixed concentrate, large amounts of lime (CaO) are used for the depression of pyrite. In this study, the negative effects of lime were reduced by using an efficient depressant Na 2 SO 3 + CaO reagent in the flotation separation of galena from pyrite.
Differential flotation of pyrite and Arsenopyrite: Effect of …
The use of traditional collectors such as xanthates to generate a bulk concentrate made up of pyrite and arsenopyrite have been achieved with relative ease and often the practice (Kappes, 2009). ... The experimental results have shown that the presence of cavitation nanobubbles in the pyrite flotation pulp enhanced the floatability …
An investigation of surface oxidation of pyrite and pyrrhotite …
Herein, a novel micromolecular organic reagent, sodium O-(2,3,4,5,6-pentahydroxyhexyl) carbonodithioate (SPHC), was synthesised and employed as a selective depressant for pyrite in the flotation separation of bulk galena/pyrite concentrate. Micro-flotation tests demonstrate that SPHC exhibits superior selectivity …
Evaluate the Depression of High-Concentration Pyrite in …
Figure 2b represents chalcopyrite flotation against pyrite. As the pyrite feed grade increased from 5% to 25%, chalcopyrite flotation against pyrite was improved …
Advances in depressants used for pyrite flotation separation …
Pyrite is separated from other minerals mainly by flotation. However, the hydrophilicity of pyrite is affected by many factors, causing it to easily enter the …
A reagent scheme for galena/sphalerite flotation separation: Insights
Previous studies show that galena and sphalerite exhibit the stronger affinities for flotation collectors than pyrite (Feng et al., 2019, ... Fig. 3 b shows that the Pb recovery in the flotation concentrate increases to ~70% as the dosage of BX increases to 40 g/t and then remaines stable despite a further rise in the dosage of BX. At 40 g/t ...
Pyrite flotation in the presence of metal ions and sphalerite
Metallurgical results confirmed that it is possible to upgrade the Au:S values of a pyrite flotation concentrate by using a hydrometallurgical scheme for preparation before flotation. A 144% increase in Au:S value was obtained with 25% oxidation of the pyrite concentrate with a gold recovery of 56%.
Processing a bulk pyrite concentrate by flotation reagents
Keywords Flotation, pyrite, zeta-potential. arsenopyrite, gold, concentrate, reagents, modifiers, INTRODUCTION The traditional application of flotation is mainly to sulphide minerals [1,2]. The separation of pyrite from other sulphides, is usually achieved by carefully controlling the operating conditions and the addition of flotation reagents ...
Effect of regrinding conditions on pyrite flotation in the …
Pyrite single mineral was used to simulate pyrite rougher flotation concentrate obtained at Telfer flotation plant which contains about 80% pyrite. Pyrite mineral was purchased from GEO Discoveries, Sydney and originated from Peru. The XRD spectrum of the pyrite sample is shown in Fig. 1. All of the peaks appeared in the …
Evaluate the Depression of High-Concentration Pyrite in …
Generally speaking, pyrite flotation is poor at alkaline pH (Aghazadeh, Kamal Mousavinezhad, and Gharabaghi Citation 2015; Hu, Sun, and Wang Citation 2009). ... This results in more pyrite flotation and a lower Cu concentrate grade accordingly. In flotation plants, the operators often have to sace Cu recovery to accommodate the …
Gold Flotation
Lime should not be used because it is a depressor of free gold and inhibits pyrite flotation. Sodium sulphide is often helpful in the flotation of partly oxidized sulphides but must be used with caution because of its depressing action on free gold. ... Cyanidation of a flotation concentrate made from the raw ore, though it would clean up …
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 …
Minerals | Free Full-Text | Selective Flotation of Pyrite from …
In this study, the surface modification of arsenopyrite and pyrite with low temperature oxygen plasma was developed as an effective approach to improve the flotation separation efficiency of minerals. The micro-flotation experiments results indicated that plasma pre-treatment can achieve selective flotation of arsenopyrite from …
Minerals | Free Full-Text | Effects of Pyrite Texture …
A combined copper rougher concentrate was produced assaying 2.4% Cu at 5.1% recovery. Following the copper flotation stage, pyrite rougher flotation was performed at the same pH using 100 g/t …
Copper and Pyrite Separation by Selective and Sequential …
A copper-pyrite mill in Canada uses the 12-cell No. 21 "Sub-A" Flotation Machine, shown above, for roughing, and a 2-cell No. 21 "Sub-A" Flotation Machine for …
Froth Flotation of Chalcopyrite/Pyrite Ore: A Critical Review
Pyrite flotation was induced by xanthate (1.1 × 10 −4 mol/L) and activated by copper cations (2.6 × 10 −4 mol/L). In the presence of sulfite ... A pyrite concentrate …
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 ...
The Interaction between Iron Cyanide and Lead Ions in Pyrite Flotation
Despite being a major cyanide species in the process water, it is unclear how iron cyanide influences pyritic gold ore flotation as well as how lead ions influence pyritic gold ore flotation in the presence of iron cyanide. This study aims at revealing the interaction of Fe(CN)63− and lead ions in pyrite flotation to investigate the strong …
Pyrite Depressant
Flotation of copper at different alkaline pH from 7upto 10 and using different Xanthates as collector vs. recovery of copper may give some clue. Minimum Pyrite obtained in copper concentrate is the starting point for further flotation …
Assessing the depression of high-concentration pyrite in …
As can be seen from Fig. 1, the Cu recovery from the flotation of the two ores was similar at different pH values, but the Cu concentrate grade was different.The …
Differential flotation of pyrite and arsenopyrite: Effect of …
The pyrite and arsenopyrite model mineral samples used in this study were obtained from GeoDiscoveries Australia. The chemical composition of the minerals using Inductively Coupled Plasma Mass Spectrometry (ICP-MS) and Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES) is shown in Table 1.XRD analysis of the as …
Statistical comparison of hydrophobic and hydrophilic …
The proportions of galena and pyrite reporting to the flotation concentrate and tail samples are shown in Table 2. Note that percentage recovery is cumulative. The results show that there is 96 wt.% galena and 80 wt.% pyrite recovered. Thus, the overall flotation response is relatively unselective against pyrite.
Microwave roasting of flash flotation concentrate containing pyrite …
Semantic Scholar extracted view of "Microwave roasting of flash flotation concentrate containing pyrite, arsenopyrite and carbonaceous matter" by R. Amankwah et al. Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo. Search 220,368,211 papers from all fields of science ...