Application and depression mechanism of sodium sulfite on galena-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. Real ore sample flotation separation tests showed that the mixed depressant can efficiently depress pyrite from galena-pyrite mixed concentrate.
Froth Flotation of Chalcopyrite/Pyrite Ore: A …
The essence is to enhance the hydrophilicity of the pyrite surface with the help of various depressants, thereby preventing the floating of pyrite to achieve its separation from valuable minerals ...
UTILIZATION OF FLOTATION IN COPPER EXTRACTION …
Separation of minerals from ore is an important industrial process. Of the commonly used methods of separation, flotation exploits the hydrophobic (it is partial or incomplete wettability of a solid phase by the water) ... Chalcopyrite is associated with pyrite in ore; therefore, pyrite depression is required for economic recovery.
Copper and Pyrite Separation by Selective Flotation
The copper pyrite separation Process Flowsheet Crushing circuit of a copper pyrite ore. The crushing section shown consists of single stage crushing with a Forced Feed Jaw Crusher. The mine run ore is fed from the coarse ore …
The role of calcium and carbonate ions in the separation of pyrite …
Pyrite (FeS 2), which is always associated with base metals, is the most common sulfide mineral (Mu et al., 2016).However, separation of pyrite and talc is very difficult because of the natural hydrophobicity of talc. The separation of pyrite from other minerals is a common issue in minerals processing that can be achieved by froth flotation based on the differences of …
A case study of the separation of copper-gold sulfide ore from pyrite
In laboratory experiments, this new reagent system achieved a substantially better separation of copper-gold sulfide ore and pyrite than the conventional process program.
Selective Separation of Chalcopyrite from Pyrite …
In this research, the eco-friendly organic depressant sodium humate (SH) was chosen as a depressant to separate chalcopyrite from pyrite by flotation. The results indicated that SH could selectively depress pyrite owing …
A potential ceramic ball grinding medium for optimizing flotation
The components of a copper sulfide ore, in order of distribution, are chalcopyrite, bornite, and chalcocite. Most copper is concentrated from chalcopyrite. Pyrite, which is the most widely distributed sulfide ore in the crust, is often associated with chalcopyrite [4, 5]. Therefore, the efficient separation of chalcopyrite and pyrite is the ...
Selective separation of chalcopyrite from pyrite with a …
In batch flotation tests of complex sulfide ore of Mississippi Valley type (MVT) at natural pH (7.8), a separation efficiency of 61% was achieved between galena and pyrite when Chi-g-PAM was used ...
Flotation separation of pyrite from arsenopyrite using …
The flotation separation test of the pyrite-arsenopyrite artificial mixed minerals was conducted using the combined depressants. Fig. 5 depicts that a pyrite concentrate, with a grade of 49.85 wt.% S and 3.84 wt.% As and a recovery of 50.73 % S and12.11 % As was obtained.
Separation of sphalerite and dolomite using sodium …
In carbonate-hosted Pb-Zn ore, dolomite ([Ca, Mg][CO 3] 2) is an important rock-forming mineral and coexists with target minerals, such as galena, sphalerite, and pyrite (Yuan et al., 2019). In the industrial production of this carbonate-hosted Pb-Zn ore, the associated dolomite easily enters the concentrate, thus contributing to unsatisfactory ...
Study on the Influence of Particle Size Distribution on the Separation …
The presence of pyrite poses a significant impediment to the comprehensive utilization of coal gangue, which is a prevalent solid waste in industrial production. However, the current efficacy of jig separation for pyrite in fine-grade coal gangue remains unsatisfactory. To investigate the influence of particle size distribution on the jig separation of pyrite in fine-grade …
Effect of D-arginine as a novel depressant on the flotation separation …
Copper has excellent conductivity and ductility, and thus it is widely used in various industries, such as electricity and transport, and is considered an indispensable metal in the energy transition of the 21st century [1], [2].Copper is predominantly extracted from chalcopyrite, a copper iron sulfide mineral and the most abundant copper ore in the Earth's crust, which often contains …
The flotation separation of sphalerite from pyrite through …
In this study, using 4-amino-5-pentyl-1,2,4-triazole-3-thione (APTT) as a collector, the floatability of sphalerite and pyrite was explored through micro-flotation tests. In addition, the flotation separation of sphalerite from pyrite with the novel FeCl 3-CuSO 4-APTT reagent system without addition of CaO was investigated. Subsequently, the ...
Advances in depressants used for pyrite flotation …
The separation diculties of coal pyrite and ore pyrite are different due to the difference in their physicochemical proper - ties. Xi et al. (2016) showed that the hydrophobicity of coal pyrite is higher due to the substitution of C. In addition, nely
Copper and Pyrite Separation by Selective Flotation
The copper pyrite separation Process Flowsheet Crushing circuit of a copper pyrite ore. The crushing section shown consists of single stage crushing with a Forced Feed Jaw Crusher. The mine run ore is fed from the coarse ore bin by means of a Apron feeder to the grizzly Jaw Crusher. The grizzly undersize and crusher discharge product are ...
Selection of Pyrite Ore Beneficiation Method
When the pyrite ore is in a fine-grained state, the separation efficiency of the gravity separation method is often low, and flotation can be considered at this time. The flotation method uses the difference in the surface properties of the mineral to separate the target mineral from the gangue through the action of the reagent.
The separation of chalcopyrite and chalcocite from pyrite …
The oxidation of copper minerals plays a critical role in copper flotation and also the separation from pyrite. It is well known that chalcopyrite can be recovered by flotation in the absence of collectors under oxidizing conditions, but not under reducing conditions (Heyes and Trahar, 1977). ... Pyrite depression in copper ore flotation often ...
Advances in depressants used for pyrite flotation …
Highly eficient pyrite depres-sants can be selectively adsorbed on the surface of pyrite to improve its hydrophilicity, thereby increasing the flotation separa-tion eficiency. Understanding the …
Mineralogy and Innovative Flash Flotation Separation of Cu …
The results demonstrate that the ore consists of 35 categories of minerals, assaying Cu 7.99%, Pb 9.39%, and Zn 1.96% in the forms of chalcopyrite, galena, and sphalerite, respectively, and silver ...
Selective separation of chalcopyrite and pyrite with a …
Pyrite (FeS 2, iron disulphide) is the most abundant sulphide gangue mineral that is closely associated with copper sulphide ore deposits. The presence of pyrite increases the iron and sulphur content and dilutes the grade of copper concentrates. Practically, the froth flotation is widely used pre-treatment method for the upgradation of copper ...
Adsorption mechanisms and effects of thiocarbamate collectors …
Chalcopyrite (CuFeS 2) is found associated with pyrite (FeS 2) and as such their separation is paramount for the beneficiation of copper because chalcopyrite is the main source of copper in the world (Davenport et al., 2002).One of the methods used to separate minerals is flotation via collectors to increase the hydrophobicity of the minerals and enable attachment to …
The depressant-free flotation separation of Cu/Zn sulfide …
Copper (Cu) is a significant metal for the society development and scientific progress, and chalcopyrite is one of the main sources [1].Therefore, the efficient separation and enrichment of chalcopyrite appear to be particularly important, especially the flotation separation of chalcopyrite from sphalerite [2].The traditional chalcopyrite collectors, such as xanthates, …
Advances in depressants used for pyrite flotation separation …
3.1 Coal pyrite depressants. Although the contact angle is smaller and the induction time of coal pyrite is longer than those of coal (Qi et al. 2019), coal pyrite has better floatability than ore pyrite due to the doping of C atoms.Efficient depressants are needed to inhibit the floatability of pyrite in the flotation separation of coal and pyrite.
A case study of the separation of copper-gold sulfide …
acid (PGA) as the inhibitor was innovatively proposed and applied to separate copper-gold sulfide ore and pyrite in Hubei Province, China. In laboratory experiments, this new reagent system achieved a substantially better separation of copper-gold sulfide ore and pyrite than the conventional process program.
Flotation separation of pyrite and carbonate minerals from a …
Flotation is the most common method for effective separation of pyrite and carbonate minerals from Carlin-type gold deposits. The effect of conventional xanthate …
Application of pre-magnetic separation to address grinding
Therefore, it can be inferred that these native gold particles are disseminated within pyrite particles in the raw ore, and due to crushing and grinding actions, the particles are stripped from the pyrite. ... As depicted in Fig. 13 (a), following pre-magnetic separation, the raw ore is ground based on the fineness-time relationship curve ...
A green method for selective separation of molybdenite and pyrite …
Flotation of artificially mixed ore. Pyrite was blended with molybdenite at different mass ratios for flotation and the results of recovery and grade are displayed in Fig. 4. ... Therefore, the EO pretreatment enabled the effective separation of pyrite and molybdenite. EO pretreatment suggested to an environmentally-friendly and low-carbon ...
A novel depressant for selective flotation separation of pyrite …
DOI: 10.1016/J.APSUSC.2019.04.252 Corpus ID: 149862678; A novel depressant for selective flotation separation of pyrite and pyrophyllite @article{Zhao2019AND, title={A novel depressant for selective flotation separation of pyrite and pyrophyllite}, author={Kaile Zhao and Xiao-hui Wang and Zhen Wang and Wu Yan and Xiong Zhou and Longhua Xu and Chongqing Wang}, …
Surface Chemistry and Flotation of Gold-Bearing Pyrite
The Au-Py electrode was manufactured using the pyrite particles concentrated by heavy liquid separation from a gold-pyrite ore. The B-Py electrode was produced from a high-purity pyrite sample purchased from Wards' Natural Science. The −212 + 150 µm size fraction was used in both electrodes. The pyrite samples were washed with diluted HCl ...