The chalcopyrite flotation performances used MIXODT or isobutyl xanthate sodium (SIBX) as collectors were evaluated through the micro flotation experiments. And then, MIXODT's hydrophobic flotation mechanism to chalcopyrite was studied by wettability measurements, ζ-potential, Fourier transform infrared (FTIR) spectroscopy …
The results of the flotation experiments showed that PCA could selectively depress the flotation of pyrite rather than that of chalcopyrite when using SBX as the collector, and the optimum ...
1. Introduction. Chalcopyrite (CuFeS 2) is the most crucial copper (Cu) mineral in the world as it is involved in at least 70% of global Cu production (de Melo Silva Cheloni et al. Citation 2023; Li et al. Citation 2013; Schlesinger et al. Citation 2011).Chalcopyrite in Cu ores is diluted with various sulfide and non-sulfide gangue …
Nowadays, froth flotation of chalcopyrite ore has developed a large number of reagents that make it possible to improve the mineral's buoyancy conditions, both in the presence of ions that …
Chalcopyrite $(ce{CuFeS2})$ is the most common copper bearing mineral on earth (Approximately 70% of the world's copper reserves are contained in the mineral chalcopyrite), but also the most stable minerals because of its structural configuration, face-centered tetragonal lattice (Ref.1). At present, there are basically two main methods ...
Introduction. Pyrite (FeS 2) usually occurs as a gangue mineral and is widely associated with valuable minerals such as chalcopyrite, sphalerite, and galena (Mu et al., 2018).The economic extraction of valuable metals requires the selective removal of these minerals from pyrite by flotation (Chandraprabha and Natarajan, 2006, Chandra and …
The chalcopyrite specimen was crushed using a jaw crusher (1023-A, Yoshida Manufacturing co., Ltd, Sapporo, Japan) and ground by a vibratory disc mill (RS100, …
Hand-picked ore samples were crushed to a size of -1.18 mm in a jaw crusher and quantity of sample was reduced. 1/3 of the sample was packaged as an archive sample, while the other 2/3 was ground for experiments. ... Onen V (2021) Study of chalcopyrite flotation in the presence of illite using a design of experiments approach. …
The role of mineral-mineral interactions on the flotation of chalcopyrite and sphalerite has been discussed with respect to different sulphide mineral combinations involving chalcopyrite, galena ...
1. Introduction. Copper is a non-ferrous metal closely associated with human beings and has become an indispensable basic material in social and economic development [1], [2].Chalcopyrite is the dominant copper-bearing sulphide mineral from which the metal copper can be efficiently, fully and economically extracted …
The purpose of this study is to investigate the effect of the dosage of sodium hypochlorite as activator on the flotations of depressed marmatite and depressed chalcopyrite, with a focus on activation-flotation kinetics. Four flotation kinetic models were applied to test data using 1stOpt statistical analysis software to estimate the …
In this study, the synergistic depressive effect of polyaspartic acid (PASP) and zinc sulfate (ZnSO4) in the flotation separation of chalcopyrite from Cu-activated marmatite was investigated by micro-flotation experiments and ore sample flotation tests, and the possible depressive mechanism was proposed from contact angle …
Chalcopyrite single mineral, supplied by Wushan Copper Mine (Jiangxi, China), was hand-picked then crushed through a jaw crusher and a roll crusher, and then screened to collect +0.074–0.5 mm particle size fractions.The particle size distribution is presented in Fig. 1.X-ray diffraction (XRD) analysis (RIGAKU, D/MAX-RB, Japan) was …
Obviously the iPX 2 molecule could play also an important role in the flotation process, taking into account its remarkable 'sticky' properties being in a liquid state on the mineral surface at the working conditions. 3.2. Structure of the surface product of the flotation system chalcopyrite–100 mg/l NaiPX–100 mg/l frother
chalcopyrite flotation from copper sulfides with moderate content of pyrite. The authors use the factorial design of the experiments. It is studied how grinding fineness …
1.2. Chalcopyrite Ore Production The sulfide ore minerals including chalcopyrite (CuFeS 2), sphalerite (ZnS), galena (PbS) provide the major sources of the world's base metals (Cu, Zn, Pb, respectively), whereas pyrite is virtually ubiquitous as a metalliferous mineral in sulfide ore deposits (Crang and Vanghan, 1994).The first step in …
In present research, N-thiourea-maleamic acid (TMA) was found as a chalcopyrite depressant in the flotation separation of Cu-Mo sulfide ores. Its flotation performance on chalcopyrite and molybdenite was evaluated by micro-flotation tests and its adsorption mechanism was investigated by contact angle, FT-IR, adsorption capacity …
DOI: 10.1016/J.MINENG.2018.03.007 Corpus ID: 104170565; A fundamental DFT study of chalcopyrite surface evolution due to impurity divalent ions during leaching process @article{Li2018AFD, title={A fundamental DFT study of chalcopyrite surface evolution due to impurity divalent ions during leaching process}, author={Yubiao Li and Zhenlun Wei …
In the flotation separation of copper-lead-zinc complex polymetallic sulphide ores, the separation of chalcopyrite from galena is difficult because both of them have good floatability. Therefore, the development of a green, eco-friendly and selective galena depressant is highly required. In this work, sodium polyaspartate (PASP) was used as a …
In saline water flotation, the salinity can cause a distinguishable slime coating of clay minerals on chalcopyrite particles through its effect on their electrical double layers in aqueous solutions. In this work, kaolinite was used as a representative clay mineral for studying slime coating during chalcopyrite flotation. The flotation of …
Chalcopyrite, chalcocite and pyrite single minerals, supplied by GEO Discoveries, were crushed through a jaw crusher and a roll crusher, and then screened …
In order to selectively separate chalcopyrite from pyrite, the effect of organic depressant lignosulfonate calcium (LSC) on the flotation separation of chalcopyrite from pyrite was investigated by ...
Environmentally friendly, flexible and affordable flotation depressants are needed due to the depletion of easy-to-process high-grade ores as well as sustainability and environmental concerns. This paper discusses various organic depressants that have been adopted for selective depression of unwanted minerals in chalcopyrite flotation.
In this study, it was aimed to determine the effects of clay types (kaolinite, illite, and montmorillonite) and clay amount on mechanical entrainment parameters (i.e., …
Evaluation of the effect of the main parameters on chalcopyrite flotation in the presence of kaolinite and montmorillonite Hasan Ali TANER, Vildan ONEN* Mining Engineering Department, Konya Technical University, Konya, Turkey ... of <1.18 mm in a jaw crusher, then dry ground in a rod mill to obtain an 80% passing (P 80) of 106 µm.
In Cu-Mo flotation, chalcopyrite is depressed using Cu depressants, such as NaHS, Na 2 S, Nokes reagent (P 2 S 5 + NaOH), and NaCN, meaning that it is recovered as tailings, while molybdenite is ...
Semantic Scholar extracted view of "The effect of galvanic interaction between chalcopyrite and pyrite on the surface chemistry and collector adsorption: Flotation and DFT study" by Jiajia Wu et al. ... Flotation separation of chalcopyrite/pyrite mixtures under Mg(OH)_2 depression effectively limits pyrite entrainment into Cu …
Abstract: The surface oxidation of chalcopyrite is one of the most important factors affecting its flotation performance. In this study, a critical oxidation degree is …
The flotation recovery of chalcopyrite and pyrite as a function of pH value under 5 × 10 −5 mol/l IPXPO (298 K) was listed in Fig. 2, where it can be seen that IPXPO exhibited stronger collecting power to chalcopyrite than to pyrite, and the preferable pH values for recovery of chalcopyrite were 4.0 to 9.0.
It was found that molybdenite flotation was more depressed than chalcopyrite flotation by the presence of sulphate ions in water as a result of increased surface oxidation which decreased particle-bubble attachment. Similar results were obtained in the flotation of two copper ores; however, the grade of chalcopyrite and …
A new hybrid froth flotation machine recovers particles with a wide size range.. Coarse particles are recovered in a fluidized bed.. Fines and ultra-fines are recovered in a high-shear in-line contactor. • Results are given for flotation of a copper ore crushed to a top size of 600 µm.. Coarse particle recovery limited by encapsulation of …
In the present work an intense bibliographic search is developed, with updated information on the microscopic fundamentals that govern the behavior of flotation operations of chalcopyrite, the main copper mineral in nature. In particular, the effect caused by the presence of pyrite, a non-valuable mineral, but challenging for the …
This study focused on the inhibition behavior of DCMT on pretreated chalcopyrite under different water hardness levels to better guide the use of DCMT in …
Chalcopyrite is a soft mineral that can be scratched by a nail, while pyrite is hard enough that a nail cannot dig into its surface. Unlike pyrite, chalcopyrite also weathers to display an iridescent tarnish. The two …
Within the same range of POCA concentrations, the recovery of chalcopyrite flotation remains consistently high, exceeding 80 %. This suggests that POCA has minimal impact on chalcopyrite. The single mineral flotation tests results indicate that POCA exhibits potential as a specific depressant for galena during chalcopyrite-galena flotation ...
TECHNICAL ARTICLE Selective Adsorption Mechanism of Ferric Ions on the Surfaces of Chalcopyrite and Pyrite in Flotation FENG ZHANG,1 CHENYANG ZHANG,1,2,6 HONGLIANG ZHANG,1 PAN CHEN,3 RONG WANG,1 DAIXIONG CHEN,4 JIANHUA CHEN,5 MENGJIE TIAN,1 and WEI SUN1 1.—Engineering Research Center of Ministry …
1. Introduction. Chalcopyrite is the main copper-bearing mineral on Earth and an important raw material for obtaining metallic copper. Froth flotation is considered an effective separation method for sulfide ores and has been applied at the industrial scale for many years [1], [2].Milling is a key procedure with a significant impact on the subsequent …
It is difficult to separate molybdenite and chalcopyrite by froth flotation due to the good floatability of the two minerals. In this paper, the separation of copper–molybdenum sulfide minerals was realized by using pullulan polysaccharide (PU) as the depressant. The flotation test results showed that the copper concentrate grade …
Chlorite and serpentine are common magnesium-containing gangue minerals in copper sulfide flotation. In this study, sodium alginate, a natural hydrophilic polysaccharide, was introduced as a selective depressant for these gangue minerals. Micro-flotation tests were conducted on both single minerals and synthetic mixtures. The …
