The Sediment-Hosted Stratiform Copper Ore System

2005 ◽  
Author(s):  
Murray Hitzman ◽  
Rodney Kirkham ◽  
David Broughton ◽  
Jon Thorson ◽  
David Selley
Keyword(s):  
Copper Ore

RHEOLOGICAL CHARACTERIZATION OF PERUVIAN COPPER ORE SLURRIES

2020 ◽  
Author(s):  
Joel López Bonilla ◽  
Cesar Celis ◽  
Danmer Maza
Keyword(s):  
Rheological Characterization ◽  
Copper Ore

scholarly journals Recovery of γ-Fe2O3 from copper ore tailings by magnetization roasting and magnetic separation

2021 ◽  
Vol 19 (1) ◽  
pp. 128-137
Author(s):  
Bing Luo ◽  
Tongjiang Peng ◽  
Hongjuan Sun
Keyword(s):  
Magnetic Separation ◽  
Magnetic Field Intensity ◽  
Sodium Dodecyl ◽  
Separation Process ◽  
Sodium Dodecyl Sulfonate ◽  
Copper Ore ◽  
Yield Rate ◽  
Optimum Parameters ◽  
Roasting Temperature ◽  
Mineralogical Phase

Abstract To comprehensively reuse copper ore tailings, the recovery of γ-Fe2O3 from magnetic roasted slag after sulfur release from copper ore tailings followed by magnetic separation is performed. In this work, after analysis of chemical composition and mineralogical phase composition, the effects of parameters in both magnetization roasting and magnetic separation process with respect to roasting temperature, residence time, airflow, particle size distribution, magnetic field intensity, and the ratio of sodium dodecyl sulfonate to roasted slag were investigated. Under optimum parameters, a great number of γ-Fe2O3 is recycled with a grade of 66.86% and a yield rate of 67.21%. Meanwhile, the microstructure, phase transformation and magnetic property of copper ore tailings, roasted slag, and magnetic concentrate are carried out.

Application of the grade-recovery curve in the batch flotation of Polish copper ore

2013 ◽  
Vol 49 ◽  
pp. 17-23 ◽  
Author(s):  
Jan Drzymala ◽  
Przemyslaw B. Kowalczuk ◽  
Michael Oteng-Peprah ◽  
Dariusz Foszcz ◽  
Antoni Muszer ◽  
...  
Keyword(s):  
Copper Ore ◽  
Recovery Curve

The effect of radio-waves irradiation on copper-ore leaching

2021 ◽  
pp. 105584
Author(s):  
Zohre Moravvej ◽  
Ali Mohebbi ◽  
Ali Behrad Vakylabad ◽  
Sona Raeissi
Keyword(s):  
Radio Waves ◽  
Copper Ore

scholarly journals Seismic rocking effects on a mine tower under induced and natural earthquakes

2021 ◽  
Vol 21 (2) ◽  
Author(s):  
Piotr Adam Bońkowski ◽  
Juliusz Kuś ◽  
Zbigniew Zembaty
Keyword(s):  
Seismic Response ◽  
Ground Motion ◽  
Ground Surface ◽  
Tall Buildings ◽  
Earthquake Ground Motion ◽  
Seismic Action ◽  
Seismic Effects ◽  
Copper Ore ◽  
Rotational Components ◽  
Natural Earthquakes

AbstractRecent research in engineering seismology demonstrated that in addition to three translational seismic excitations along x, y and z axes, one should also consider rotational components about these axes when calculating design seismic loads for structures. The objective of this paper is to present the results of a seismic response numerical analysis of a mine tower (also called in the literature a headframe or a pit frame). These structures are used in deep mining on the ground surface to hoist output (e.g. copper ore or coal). The mine towers belong to the tall, slender structures, for which rocking excitations may be important. In the numerical example, a typical steel headframe 64 m high is analysed under two records of simultaneous rocking and horizontal seismic action of an induced mine shock and a natural earthquake. As a result, a complicated interaction of rocking seismic effects with horizontal excitations is observed. The contribution of the rocking component may sometimes reduce the overall seismic response, but in most cases, it substantially increases the seismic response of the analysed headframe. It is concluded that in the analysed case of the 64 m mining tower, the seismic response, including the rocking ground motion effects, may increase up to 31% (for natural earthquake ground motion) or even up to 135% (for mining-induced, rockburst seismic effects). This means that not only in the case of the design of very tall buildings or industrial chimneys but also for specific yet very common structures like mine towers, including the rotational seismic effects may play an important role.

scholarly journals Copper Slag of Pyroxene Composition as a Partial Replacement of Natural Aggregate for Concrete Production

Minerals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 439
Author(s):  
Sandra Filipović ◽  
Olivera Đokić ◽  
Aleksandar Radević ◽  
Dimitrije Zakić
Keyword(s):  
Chloride Ion ◽  
Copper Slag ◽  
Partial Replacement ◽  
Copper Ore ◽  
Silicon Iron ◽  
Low Resistance ◽  
Natural Aggregate ◽  
Chloride Ion Penetration ◽  
Concrete Production ◽  
Technical Properties

Copper slag, a by-product of the pyrometallurgical process used for obtaining copper from copper ore in Bor, Serbia, contains mainly silicon, iron, calcium, and aluminium oxides. Due to such properties, it is disposed of in landfills. Despite the favourable technical properties copper slag aggregates possess, such as low-water absorption (WA24 0.6%), low resistance to fragmentation (LA 10%), and low resistance to wear (MDE 4%), its use in the construction industry is still limited. The results of testing the technical properties of copper slag aggregates (CSAs) as a potential replacement for natural river aggregate (RA) are presented in this paper. The experiments included tests on three concrete mixtures with partial replacement of coarse natural aggregate with copper slag. The replacement of RA particle sizes of 8/16 mm and 16/31.5 mm with CSA in the amount of 20% + 50% and 50% + 50% resulted in an increase in the compressive strength of 12.4% and 10.5%, respectively. The increase of CSA content led to a decrease in water penetration resistance and salt-frost resistance of concrete, whereas the resistance to chloride ion penetration did not change significantly.

scholarly journals Analysis of the Triboelectrostatic Charging Behaviour of a Synthetic Sulfidic Copper Ore

2021 ◽  
Author(s):  
Sabrina Gehringer ◽  
Helmut Flachberger
Keyword(s):  
Surface Charge ◽  
Basic Knowledge ◽  
Ambient Conditions ◽  
Electrostatic Separation ◽  
Copper Ore

AbstractIn this study, several tests were performed to analyse the triboelectrostatic charging behaviour of an artificially mixed sulfidic copper ore consisting of quartz and chalcopyrite. To check the surface charge of the pure mineral samples, they were analysed in a self-developed triboelectrostatic charging unit. After that, the artificially mixed sulfidic copper ore was sorted by using a triboelectrostatic belt separator.The objective of the study is to generate basic knowledge about the triboelectrostatic charge behaviour and furthermore the sortability by using electrostatic separation. All separation tests were carried out under controlled ambient conditions.

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