A high throughput screening model of solidophilic flotation …
A high throughput screening model of solidophilic flotation reagents for chalcopyrite based on quantum chemistry calculations and machine learning. Author links open overlay panel Jianyong He a 1, Li Wang b 1, Chenyang Zhang a c d, ... In this work, an efficient QC + ML model has been built to screen the target flotation functional groups ...
Effect of Grinding Media on Grinding-Flotation …
Flotation results also indicate that chalcopyrite has better floatability after nano-ceramic ball grinding compared with steel ball grinding. Results of adsorption experiments show that nano-ceramic ball grinding …
A modified model based on CFD simulation and experiments …
To predict turbulent flotation process, Computational Fluid Dynamics (CFD) simulations and flotation experiments were investigated on pure chalcopyrite in both smooth and vortex …
A high throughput screening model of solidophilic flotation …
A flotation molecule set involving 47 molecules has been developed to obtain their affinity to possible surface sites of chalcopyrite [e.g. Cu(II), Cu(I), Fe(II)]. The obtained data …
Exploring the highly efficient depressant role of fenugreek …
Copper (Cu) is one of the most important nonferrous metals, and has been widely used in the modern industry. Chalcopyrite (CuFeS 2) is the main mineral source for the copper metallurgy, which is usually enriched by using flotation technology (Chen et al., 2019).In most of the chalcopyrite ore deposits, talc (Mg 3 (Si 2 O 5) 2 (OH) 2), a "TOT" layered silicate …
(PDF) Optimization of Chalcopyrite Froth Flotation Process …
Is was observed a significant optimization in the concentration by froth flotation of the chalcopyrite by using Jig screen and the peptizes were removed during the flotation step.
Efficient flotation separation of chalcopyrite from …
The effect of PA depressant concentration on the mineral flotation recovery of chalcopyrite and molybdenite was studied under an optimum pH of 6. The results are shown in the Fig. 3 (b). The flotation recovery of chalcopyrite decreases sharply from 94.37 % to 5 % as the PA concentration increases from 0 to 100 mg/L.
Cobalt and Nickel Recovery From Missouri Lead Belt …
1. Representative analysis of chalcopyrite concentrate..... 3 2. Wet-screen analysis and distribution of elements in a typical chalcopyrite-concentrate sample..... 3 3. Magnetic susceptibilities of pure sulfide mineral samples..... 4 4. Magnetic separation of lead-copper rougher flotation concentrate. 6 5.
Research progress of chalcopyrite and galena flotation …
Regardless of whether the process involves "inhibiting chalcopyrite during galena flotation" or "inhibiting galena during chalcopyrite flotation", the effective inhibition of galena or chalcopyrite by organic depressants and novel agents is predominantly attributed to the chemical or physical adsorption of their functional groups onto ...
Investigation the effect of filling materials on chalcopyrite flotation
Chalcopyrite and the filling materials used in the experiments were obtained from Yunnan Province and Anhui Province, China. After a series of crushing (jaw crusher), dry grinding (ceramic ball mill), and screening (standard sieve) steps, minerals with particle sizes of 0.038–0.074 mm were used for flotation experiments.
Depressant-free flotation separation of chalcopyrite …
froth flotation is the primary method employed for the comprehensive recovery of chalcopyrite. Froth flotation is a physicochemical technique that exploits varying surface hydrophobic properties among different minerals (Huang et al., 2014; Liu et al., 2000). However, galena is also a sulfide ore and exhibits
Froth Flotation of Chalcopyrite/Pyrite Ore: A …
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 ...
Research progress of chalcopyrite and galena flotation …
In modern flotation process, the separation of chalcopyrite and galena is a difficult problem, which is difficult, incomplete and contains each other seriously. The main contributing factors are as follows: (1) Chalcopyrite and galena commonly occur symbiotically in sulfide ores, exhibiting a complex ore structure.
A green flotation collector towards efficient separation of
The flotation experiments show that PBAHX has a superior recovery ratio for chalcopyrite (91.89%), but a poor flotation performance on pyrite (34.62%) at a collector concentration of 2 × 10 −4 mol/L and pH 9.0. Further, E-nose detection demonstrates that PBAHX has a lower odor intensity than SIBX, which is attributed to the chaotic ...
Selective flotation of chalcopyrite from pyrite using diphosphonic …
The screen or design of more selective depressants and collectors is the key to efficient separation. Pyrite flotation depressants can be divided into inorganic and organic ones. ... the search of a cheap and selective collector is crucial for chalcopyrite flotation. 1-Hydroxyethylidene-1, 1-diphosphonic acid (HEDP) is an organic phosphonic acid.
Flotation separation of galena and chalcopyrite by using …
The flotation separation of galena (PbS) and chalcopyrite (CuFeS 2) is not yet fully resolved due to the lack of efficient depressants.This study proposed a new depressant, i.e. an Fe 2+ /NaClO system, as an efficient PbS depressant. The inhibition effect of the Fe 2+ /NaClO system is attributed to the oxidation effect of •OH radicals from the reaction between HClO and Fe 2+.
Investigation of Internal Classification in Coarse …
This material was then washed over a Kason vibratory screen to prevent the overgrinding of fines generated during crushing. The oversized material was then fed to a laboratory rod mill to pass through a 0.53 mm …
Mechanism of Mechanical Entrainment in Chalcopyrite Flotation…
One of the problems in flotation is mechanical entrainment and the other is the presence of complex gangues (especially clay minerals). In the present study, it was aimed to determine the effects of clay types (kaolinite, illite, and montmorillonite) on mechanical entrainment parameters (total flotation recovery, real recovery, mechanical entrainment …
Selective flotation of chalcopyrite from pyrite using diphosphonic …
The screen or design of more selective depressants and collectors is the key to efficient separation. Pyrite flotation depressants can be divided into inorganic and organic ones. ... the search of a cheap and selective collector is crucial for chalcopyrite flotation. 1-Hydroxyethylidene-1, 1-diphosphonic acid (HEDP) is an organic phosphonic ...
The effect of oxidized starches on chalcopyrite flotation
The effect of starch concentration on chalcopyrite flotation at pH 7.5. In contrast to other starches, Ox 10/120 showed a somewhat linear dependence on polymer concentration as confirmed by a continual decline in chalcopyrite recovery. At higher concentrations (from 33.3 mg/L to 47 mg/L) Ox 10/120 appeared to be less depressive compared to the ...
Selective flotation of chalcopyrite from pyrite via seawater …
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 ...
Application of flotation kinetics models to chalcopyrite …
These equations offer valuable insights into the critical nature of precise timing in chalcopyrite flotation and highlight the importance of considering multiple kinetic models for …
Polymers with Biobased Hydrophobic Cardanyl Acrylate and …
The effective separation of chalcopyrite, an extensively utilized copper mineral, presents a considerable hurdle for the mineral processing sector due to its geological tendency to be colocated with various sulfide minerals and its intricate surface chemistry that hinders efficient separation using conventional approaches. This research aims to address this challenge by …
Chalcopyrite Floatability in Flotation Plant of the Rudnik …
Part of large-scale industrial test results of milling fineness influence on lead, copper and zinc minerals flotation results in the Rudnik flotation plant are shown in this paper. Based on industrial research it has been concluded that one-stage milling and two-stage classification of complex Pb-Zn-Cu ore leads to so-called "differential milling". Namely, galena …
Heterocoagulation of chalcopyrite and pyrite minerals in flotation …
The interactions between particles, and between a particle and an air bubble control the flotation separation process. The bubble–particle interaction determines the flotation kinetics and recovery, and is now investigated with technologies such as atomic force microscopy [1], [2], [3].The particle–particle interaction in flotation is controlled by surface forces, leading to …
Research progress of chalcopyrite and galena flotation …
This review provides an overview of the advancements in the research of flotation separation reagents for chalcopyrite and galena, including collectors and depressants, and …
Optimization of Chalcopyrite Froth Flotation Process by …
Denver flotation cells for the same purpose were applied. During the process, a reduction in the reagent consumption when handling the concentration step was considered. Is was observed a significant optimization in the concentration by froth flotation of the chalcopyrite by using Jig screen and the peptizes were removed during the flotation step.
Effect of bubble loading on the recovery of coarse mineral …
A single rock of high-grade chalcopyrite was crushed and ground and divided using standard sieves to give approximately equal amounts of mineral in each of ten size bands. The overall concentration of chalcopyrite in the flotation feed was 3.97 %. The graded silica was obtained from a commercial supplier (Sibelco Australia Ltd, Sydney, Australia).
CFD investigation of chalcopyrite flotation prediction …
The flotation experiments of pure chalcopyrite with slurry flow rate of 0.4 m 3 / h and 0.5 m 3 / h and median diameter d50 = 45 μm were carried. The particle transport equation was coupled with the hydrodynamic model as a user-defined function, and the flotation rate constant was calculated by numerical simulation. ...
A potential ceramic ball grinding medium for optimizing flotation
The CB system performed better than did the CIB system in the flotation separation of chalcopyrite and pyrite. Under the optimal flotation conditions, the Cu grade, S grade, and chalcopyrite recovery of the flotation concentrate in the CB system were 2.90%, 0.70%, and 18.88% higher than those in the CIB system.