Development and optimization of mixed sulphide/oxide copper ore treatment at Kansanshi . F.X. Paquot; C. Ngulube. First Quantum minerals Ltd, Kansanshi Mine, Solwezi, Zambia . ... Flotation tests. Flotation feed. The very high variations in grades of the Kansanshi transitional ores (from 0.5% to 3% for the TCu and from 0.1% to 1.5% for …

Flotation of a copper-cobalt sulphide ore: Quantitative insights into the role of mineralogy ... as it would allow for several tests to be conducted for collector dosage optimization …

2.2. Copper flotation test Flotation tests were performed in two schemes: 1- flotation tests with individual collectors 2- flotation tests with the mixture of agents. At the first route, maximum concentration of collectors used to perform all experiments but the second series performed in two level for collectors concentration. It should be

In this study, the robust Taguchi experimental design method was used to determine the optimum conditions for the flotation of nickel, copper and cobalt from a nickel-copper …

The results from pure mineral flotation experiments reveal that, at a copper ion concentration of 1 × 10 −4 mol/L, sphalerite, previously depressed by zinc sulfate, is activated by copper ions, achieving a recovery rate of 91.46 % with butyl xanthate as the collector. However, when more cooper ions are added, the recovery of sphalerite …

conditions, the recovery of copper and lead was, respec-tively, 88% with grade of 24.5% in Cu concentrate and 81% with grade of 13.8% in Pb concentrate. Keywords Optimization Differential flotation Copper sulfide-oxide ore Ghozlo mine 1 Introduction Unlike lead–zinc and copper–zinc deposits that are abun-

Download Table | Results of flotation optimization test from publication: Recovery of Copper from the Slag of Khatoonabad Flash Smelting Furnace by Flotation Method | Copper loss in the slag of ...

A wetting agent useful as a frother and collector in non-sulphide flotation. Tergitol Wetting Agent No.7: A surface active wetting agent. 5-10% solution.25 to .75: A wetting agent useful as a frother. and collector in non-sulphide flotation. Terposol No. 3: Mixture about 60% terpinyl methyl ethers balance tertiary terpene alcohols. Undiluted ...

addition on flotation performance of a nickel sulphide ore. The objectives of the study were to: 1. develop an understanding of the effects of collector and depressant dosage, and its interactive effects, on flotation performance and 2. determine the effect of stage dosing collector and depressant on flotation performance.

Flotation tests were conducted to reprocess the tailings for Au, Ag, and Cu recovery, and at the same time to prevent acid mine drainage (AMD) generation through the oxidation of sulfide minerals ...

the flotation recovery of Ni, Cu and Co from a nickel-copper sulphide ore. The effect on flotation performance of various parameters such as pH, collector dosage, % solids and depressant dosage at different levels was investigated. Therefore, the main objective of the study was to optimize the process parameters for the flotation of base metals ...

sulphidisation for flotation of oxidized sulphides has also been demonstrated (Newell et al., 2006). When introduced in the slurry, the sulphidiser dissociates into -the species H 2 S, HS-or S 2, depending on the pH. These ions react with the copper oxide minerals to form a sulphide layer on the surface of

In this research, flotation of copper, lead and zinc minerals from a copper oxide–sulfide ore was studied. The identification tests showed that the sample is a mixture of quartz, chalcopyrite ...

Key words: copper sulphide ores; flotation reagents; modelling; optimization 1 Introduction Froth flotation is a process used for selectively separating hydrophobic materials from hydrophilic. ... [7 14]. One of these statistical techniques was the factorial design test, which was used to study several factors and determine their …

The flotation by surface sulphidisation of the oxidized copper-cobalt-bearing ore from Kimpe (1.97% Cu; 0.66% Co) was studied in order to evaluate its behavior by the analysis of its most ...

All sulphide minerals and copper oxides are concentrated in the sulphide flotation stage, whilst cobalt oxides are less concentrated or equal to the content in the feed. When comparing the information from Table 6 with the recovery per mineral in Table 4, it follows that a higher recovery of valuable minerals is accompanied with a lower ...

Response surface methodology (RSM) is one of the most effective tools for optimizing processes, and it has been used in conjunction with the Analysis of Variance (ANOVA) test to establish the effect of …

Asghari et al. [27] investigated the improvement of copper recovery in an industrial flotation circuit (Sarcheshmeh copper mine), and stated that about 95% of overall copper lost in final tailing was in the rougher circuit while the rougher flotation recovery of mixed copper ore was 8% less than the sulfide ore.

The dominant challenge of current copper beneficiation plants is the low recoverability of oxide copper-bearing minerals associated with sulfide type ones. …

The raw material for the flotation test in this study is obtained from the original ore of a large copper mining and processing plant. The chemical composition analysis results of …

Electronic properties of sulfide minerals and floatability. Jianhua Chen, ... Ye Chen, in Electronic Structure and Surfaces of Sulfide Minerals, 2020. 2.6.1 Introduction. Sulfide ore flotation is a complex electrochemical system. Electron transfer not only occurs between the sulfide minerals and flotation reagent molecules, but it also happens among …

Grinding the ore to minus 100-mesh gave satisfactory liberation of the minerals. Standard flotation procedure with potassium ethyl xanthate, cresylic acid,

Response surface methodology (RSM) is one of the most effective tools for optimizing processes, and it has been used in conjunction with the Analysis of Variance (ANOVA) test to establish the effect of input factors on output factors. However, when this methodology is used in mineral flotation, its polynomial model usually performs poorly. …

The flotation performance in both sulphide and oxide copper minerals rougher stages is enhanced with an increase in the degree of fineness of the grind, with an optimum being obtained at a density ...

This data demonstrates a distinct differential between chalcopyrite and galena flotation rates. Therefore, recovering galena into a selective lead product should be considered possible and investigated via further flotation testwork. Evaluating Copper Rougher-Scavenger Flotation Circuit Performance; Mineral Composition and …

Summary of the metallurgical performance of the copper rougher and scavenger circuits. Chalcopyrite binaries with galena and with pyrite are better than 95% recovered into the combined rougher and …

However, when there is an excessive sodium sulfide concentration, a considerable copper sulfide colloid forms in the flotation pulp; 41 this massive copper sulfide formation obstructs the adsorption of xanthate onto the oxide mineral surface, resulting in a significant decline in copper recovery. 50−52 Furthermore, it is essential to …

Optimization of chemical reagent flotation schemes has been hindered due to many roadblocks that exist in working with mining companies who can be ...

Flotation of a copper-cobalt sulphide ore: Quantitative insights into the role of mineralogy ... as it would allow for several tests to be conducted for collector dosage optimization before the flotation experiment with mineralogical tracking. The sample was crushed down to −2 mm to homogenize the samples and riffled into 500-gram ...

The presence of fine and ultra-fine gangue minerals in flotation plants can contribute to sub-optimal valuable ore recovery and incomplete water recycling from thickeners, with the performance of the …