— The flotation process can be used to separate the arsenic-bearing copper ore, producing a "clean" copper concentrate with low arsenic content which is then processed in copper smelters and a ...
Flotation of Chalcocite (Cu 2 S) Chalcocite (Cu 2 S) and chalcopyrite (CuFeS 2) are the two most commonly floated copper sulphide minerals. Bornite (Cu 5 FeS 4) and covellite (CuS) and energite (Cu 3 AsS 4) are normally present in lesser quantities. The complete flotation of chalcocite is achieved between ph = 1 to ph = 10 with ethyl xanthate.
The separation of chalcocite (Cu 2 S) and heazlewoodite (Ni 3 S 2) from high nickel matte can be achieved by maintaining the proper pH and pulp potential while using xanthates as collectors.The flotation recovery of Cu 2 S and Ni 3 S 2 has been studied by adjusting the oxidation–reduction potential of the flotation pulp with (NH 4) 2 S 2 O 8 and KMnO 4.The …
2.1.1 The ore-forming mechanism of natural CuFeS 2. Natural chalcopyrite is a copper iron sulfide mineral with a chemical formula of CuFeS 2. Natural chalcopyrite is a copper-iron sulfide mineral with the chemical formula CuFeS 2, cell parameters a = 0.52914 nm, c = 1.0422 nm, belonging to the tetragonal crystal system, I-42d space group [63].
— 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 ...
— Surface oxidation of secondary minerals, such as chalcocite, bornite and digenite, present in the Salobo copper ore makes their flotation difficult and requires excessive reagent consumptions.
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. ...
Flotation of an Oxidized Copper Sulfide Ore Ahmed A. Seifelnasr 1, Ghorashi Z. Zain 2, Abdel-Zaher M. Abouzeid *3 1 Faculty of Petroleum and Mining Engineering, Suez University, Suez, Egypt
— Dynamic simulator of a rougher flotation circuit for a copper sulphide ore. Author links open overlay panel A. Casali a, G ... In one case, at a lower copper grade (L ca ⩽0.17L fa), there is no chalcocite. All the copper is then chalcopyrite and the pyrite is ... A preliminary adjustment of the parameters more related to the dynamic response ...
Flotation of sulphidic and oxidic copper minerals is reviewed, with particular reference to previous studies of refractory copper ore flotation. Keywords: Flotation; recovery; refractory. 1. Introduction . Froth flotation is defined as a physico-chemical process which exploits the differences in the electrochemical
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 valuable minerals of a copper sulfide ore in Chile, mainly consist of chalcopyrite and chalcocite as well as contain small amounts of cuprite.
— 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: …
— Chalcopyrite (also known as copper pyrites) and similar sulfide ores are the commonest ores of copper. The ores typically contain low percentages of copper and have to be concentrated before refining (e.g., via froth flotation). Figure 1: Chalcopyrite extracted from Zacatecas, Mexico. from Rob Lavinsky (iRocks) under a CC-BY-SA-3.0 license.
DOI: 10.1016/0301-7516(83)90035-2 Corpus ID: 98580861; Electrochemical flotation separation of chalcocite from molybdenite @article{Chander1983ElectrochemicalFS, title={Electrochemical flotation separation of chalcocite from molybdenite}, author={Subhash Chander and Douglas Winston Fuerstenau}, journal={International Journal of Mineral …
— One of the principal problems in flotation of copper complex ores is the presence of pyrite and copper-activated pyrite in moderately alkaline pHs. Misreported pyrite into copper concentrates dramatically …
— In this paper, we have reviewed the surface properties of common copper oxide minerals and summarized application of direct flotation, sulfidization flotation, and …
— The aim of this study is to apply process mineralogy as a practical tool for further understanding and predicting the flotation kinetics of the copper 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 ...
— Fig. 2 shows the P 80 of different mineral species in an ore for a major copper operation. These values vary significantly, with the P 80 of total solids, sulfide minerals, iron minerals, copper minerals and molybdenum are ∼ 200, 105, 125, 94 and 85, respectively. Flotation optimization of complex ores often requires a better understanding of the size …
— The dominant challenge of current copper beneficiation plants is the low recoverability of oxide copper-bearing minerals associated with sulfide type ones. Furthermore, applying commonly used conventional methodologies does not allow the interactional effects of critical parameters in the flotation processes to be investigated, …
Figure 1 is a generalized diagram of a conventional copper flotation plant from the point where ore first enters the circuit to the production of concentrate and tailings. To prepare ore for the flotation process, run-of-mine ore, which may contain from about 2 to 5 percent water, by weight, when mined, is
— The Problem with Copper for Porphyry ores and Chalcocite and Chalcopyrite Copper, one of our most important minerals, is found in many parts of the world. One of the major sources of Copper is the so-called porphyry ores such as the large deposits in the west and southwestern United States, Mexico, South America and Europe.. Porphyry …
DOI: 10.2465/MINERJ1953.4.275 Corpus ID: 97898254; ON THE STATISTICAL DISTRIBUTION OF COPPER IONS IN THE STRUCTURE OF β -CHALCOCITE @article{Sadanaga1965ONTS, title={ON THE STATISTICAL DISTRIBUTION OF COPPER IONS IN THE STRUCTURE OF $beta$ -CHALCOCITE}, author={Ryoichi Sadanaga …
— 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 ...
— Surface oxidation of secondary minerals, such as chalcocite, bornite and digenite, present in the Salobo copper ore makes their flotation difficult and requires excessive reagent consumptions.
Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces …
— Thionocarbamates are the group of collectors that are mostly used for flotation of sulphide copper minerals, alone or in combination with xanthates depending on a mineralogical composition of the ore. In this paper, the results of the study of application of thionocarbamates in copper slag flotation are presented. Chemical analysis of smelter …
— The surface energy of copper slag particles can be changed if adding Na 2 CO 3 before wet grinding, the possibility of cracks between chalcocite and gangue particles can be increased, and Na 2 CO 3 can also be used to clean the surface of mineral particles, slightly oxidizing the chalcocite surface and improving the flotation effect of 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 frother with one of the xanthates or …
— There is a general industrial observation that chalcocite-dominant copper ores are more difficult to treat in particular in cleaner flotation after regrinding (Wightman et …
a Sungun porphyry copper sulfide ore which was obtained from East Azerbaijan Province in the northwest part of Iran. The factors mentioned in the design were selected based on the parameters that can be changed at the Sungun processing plant. 2 Materials and Methods 2.1 Ore Sample A bulk sample of copper ore was obtained from the Sungun
— 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 …
