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copper sulphide minerals and 93% of carrollite co uld be recovered from mixed oxide sulphide ore at ambient pH in a laboratory batch flotation experiment. Final concentrate grades after the sulphide flotation stage were 12.2% Cu and 0.38% Co [11]. Flotation processes are typically optimized through changes of reagent dosage and flotation
A maximum recovery of copper was 88,58% while the grade was 2,88 with 32,29 copper oxide on the total massive copper under the flotation conditions: 1,15 pulp density, 10 g/t dosage collector, 10 g/t dosage frother, and 50 g/t dosage dispersant and the maximum grade 12,24 while the recovery was 47,02% under the flotation conditions: 1,15 pulp ...
A correlation is established using the zeta potential and Hallimond flotation tests to assess the role of operating parameters in flotation. The distinctive role of process mineralogy …
The authors indicated that copper ions drastically reduced the recoveries of copper and molybdenum and increased the inhibition of sodium sulfide; that is, copper ions seriously …
The copper-iron sulphide mineral bornite (Cu 5 FeS 4) is a ternary semiconducting material that crystallises in the orthorhombic system and one of the main valuable sources of commercial copper after chalcopyrite (CuFeS 2) and chalcocite (Cu 2 S) in chronology of economic importance (Buckley et al., 1984).Bornite is also one of the copper sulphides that …
In this paper, we have reviewed the surface properties of common copper oxide minerals and summarized application of direct flotation, sulfidization flotation, and activation …
flotation, a concentrate (rougher concentrate + scavenger products) was obtained with a mass pull of 22%. Copper and zinc recoveries of this concentrate were 91.8% and 92.5%, respectively. Keywords: copper, zinc, flotation, collector, refractory ore 1. Introduction Metals were discovered and first used approximately 10,000 years ago.
The parameters in the figure were obtained by fitting the Garcia ... The change in pH allows the copper and iron atoms to dissolve from the copper ore lattice, leaving a surface deficient in metals and rich in sulfur rather than …
To model the copper ore flotation process, an analysis was made on the factors that affect the results of the process. We choose the following seven factors as independent variables. ... Azizi, A.: Optimization of rougher flotation parameters of the sarcheshmeh copper ore using a statistical technique. J. Dispersion Sci. Technol. 36, 1066 ...
The best concentrate grade achieved was 13%TCu on desliming. Dianwen and his colleagues[41] in their study on the sulphidisation promotion effect of ammonium sulphate on flotation of copper oxide ore, showed that flotation recovery increased by 12.28% when ammonium sulphate was added in the presence of sodium sulphide.
The flotation recovery of sulfide ore in a sedimenthosted copper-cobalt deposit in the Democratic Republic of Congo has been predicted by the correlation of mineralogical data delivered by the ...
This paper presents the results of mineralogical and flotation studies on the copper ore from the deposit "North Revir" in the Copper Mine Majdanpek, using different collectors.
Four mineralogical parameters have been identified to influence the copper rate constant: chalcocite content (−1.13), carrollite content (−1.23), the association of copper …
The three most important sources of copper are chalcocite (Cu 2 S), chalcopyrite (CuFeS 2 ... the influence of hydrodynamic and reagent modes on the flotation parameters of the ore under study. ...
Sungun copper processing plant. 2.3. Flotation tests Two flotation tests were conducted using the same flotation machine (Denver D12) with a 4.5-L cell and an agitation speed of 1200 r/min. In ...
Characterisation of the samples through QEMSCAN showed that bornite, chalcopyrite, chalcocite and carrollite are the main copper-bearing sulphide minerals while carrollite is the only cobalt-bearing mineral. …
copper ore comprising sulphide and oxide minerals with a view to achieving an optimal flotation performance in the treatment of the Kansanshi ore body. This required an in-depth
Using quantitative mineralogical data, chemistry analysis, and statistical tools (PCA and PLS), a model is developed that can be used to predict changes in mixed copper …
Flotation of Copper Ores. In most plants engaged in the flotation of ores containing copper-bearing sulphide minerals with or without pyrite, pine oil is employed as a …
Selectivity and power of frothers in copper ore flotation 517 The ore was crushed in a jaw crusher to obtain particles smaller than 1 mm in size. Prior to each flotation experiment, the crushed material was wet ground in a steel ball mill. The size distribution of the ore, used as the flotation feed, is presented in Table 1. Table 1.
the rougher circuit while the rougher flotation recovery of mixed copper ore was 8% less than the sulfide ore. Additionally, the incr ease of collector and NaHS dosages along with the size reduction
This means that 95.7% of the copper present in the ore was recovered in the concentrate, while the rest was lost in the tailings. (c) The % Cu Loss can be calculated by subtracting the % Cu Recovery from : % Cu Loss = 100 – 95.7 = 4.3% This means that 4.3% of the copper present in the ore was lost in the tailings.
Actually, most copper is found as chalcopyrite ore, which is the most abundant form of copper sulfide, but it is recalcitrant to dissolution. The biggest challenge for biohydrometalurgy is the ...
This study aims to investigate the effects of operational variables on concentrate grade, recovery, separation efficiency, and kinetic parameters of the copper flotation process. For this purpose, the effects of the pulp solids content, collector and frother dosage, and preparation and concentrate collection time were studied using a Taguchi experimental design. The results …
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 ...
In this study, the flotation of oxidized copper ore obtained from Ergani Copper Mining Company in Turkey was performed. This ore contains 2.03% copper, 0.15% cobalt and 3.73% sulfur.
The difference in volume of the water after filling the flask with the ore specimen was used to solve the density of the ore using this equation: D= Where m is the mass of the ore and v is displaced water volume. 3.2 Bulk Flotation A one kilogram ore, passing -200 mesh was fed to the flotation machine for the bulk flotation of copper and zinc.
Copper is a strategic metal and its demand is growing rapidly [15]. Cobalt has also a great role for the growth of humans, animals and plants. However, it cannot be taken to avoid excessively toxic effects. [17]. Copper-cobalt ore from copper and cobalt come from the Central African Copper Belt in the Democratic Republic of Congo and Zambia.
the rougher circuit while the rougher flotation recovery of mixed copper ore was 8% less than the sulfide ore. Additionally, the increase of collector and NaHS dosages along with the size reduction
The activation effects of single activator and some combined activators on Yunnan copper oxide ore were studied with Drawing a conclusion that the best activation - xanthate flotation result could ...
