However, the cyanidation tailing had the following features, bringing about much difficulty to the recovery of valuable minerals: (1) The grades of chalcopyrite, galena, and sphalerite in the tailing were very low. (2) Residual cyanide and reagents in the tailing depressed the recovery of chalcopyrite, galena, and sphalerite to some extent. (3)
The liberation distribution of chalcopyrite has been measured in a concentrate and tailings streams and to provide the end-user of the data with information on the errors present in the data confidence intervals have been ... It is clear that the level of confidence in the liberation data for the lower grade sample from the tailing stream (Cu ...
Initially, mineralogical studies were conducted by sampling tailing piles to identify textural characteristics and chemical composition in each size fraction. Utilizing the obtained data, the EMC method (HSC-Chemistry software-V.9) was employed to determine the mineralogical modal. ... while pyrite and chalcopyrite are identified as minor ...
In tailings with the presence of copper sulfides, such as chalcocite, digenite, and covellite with bornite and chalcopyrite, the generation of siderophores in the absence of iron by the genera Bacillus and Microbacterium has been studied .
Question: 4. A chalcopyrite (CuFeS2) ore, assaying about 1.5% Cu, must be routinely sampled for assay to a desired sampling accuracy of +0.02% Cu, a certainty of 0.99% (2.576 standard deviation). The CuFeS2 is essentially liberated from quartz gangue. The top size of the ore after crushing is 1.5 cm whilst the grain size of CuFeS2 is 0.01 cm.
Samples of chalcopyrite-bearing tailings were collected from an active deposit in a mining operation located in northern Chile. Approximately 1 kg of dried sample was collected and …
Tailings of a Cu (Mo, Ag, Au) mine in Chile working with sulfide ores (chalcopyrite, molybdenite, pyrite) in siderite and talc gangue minerals. The tailing sample originated from the processing outlet. ... and a 10 cm long suspension compartment containing 50 g mine tailing sample and 400 mL deionized water (L/S=8) and the anode (Fig. 1). Both ...
To assess this potential, critical minerals and metals in the mine tailings were investigated through sampling, characterization, and 3D geostatistical modeling. The Bleïda …
minerals such as pyrite, chalcopyrite, pyrrhotite, arsenopyrite, when exposed to air and water can be oxidized and produce acid effluents that dissolve and ... tailing sample to produce an acid drainage and its capacity/inability to neutralize it (Aubertin et al., 2002). The main objective of this paper is, thus, to predict the
This sampling was performed to achieve an adequate evaluation of the tailings, considering sampling points from north to south and from east to west over the deposit area. To the sampling, 1 kg of tailing samples was collected from the surface of the pastetailing deposit. Sampling considers paste samples from the first 15 cm of the tailings ...
In this regard, tailings may contain minerals such as quartz, orthoclase, magnetite, hematite, pyrite, and chalcopyrite, among others. Additionally, the total iron grade may be around 19%, ... They obtained the tailing sample from a tailing dam placed in the north of Chile. Specifically, the sample was taken from the wall of the tailing dam ...
Stability of Cu-Sulfides in Submarine Tailing Disposals: A Case Study from Repparfjorden, Northern Norway ... Bornite and chalcopyrite are the major Cu-sulfides, and are characterized by low concentrations of potentially toxic elements including Cd, Hg, and As. ... sphalerite (sph) grain in marine sediments from 216 cm depth (sample #216); (D ...
The flotation tailing sample utilized in this study was provided by Eagle Mine, USA. The material was prepared to 80 % passing 75 µm by grinding a representative portion in a laboratory-size ball mill at about 80 revolution per min (rpm) for 10 min. ... The improvement of chalcopyrite leaching required direct contact between chalcopyrite and ...
Tailings are a significant concern due to their potential release of toxic elements into the environment, posing risks to ecosystems and human health. Therefore, understanding their polluting potential is crucial for effective …
Article on Cooperative bioleaching of chalcopyrite and silver-bearing tailing by mixed moderately thermophilic culture: An emphasis on the chalcopyrite dissolution with XPS and electrochemical analysis, published in Minerals Engineering 81 on by Minghao Hu+6. ... In this work, the interactions between one sample of silver-bearing ...
The geochemistry and mineralogy of the tailing dump and the sampling procedure have been described by others in detail (8, 9, 25-27, 30, 39, 41). ... and galena. Three thin, cemented layers occur in a depth range of 0.6 to 0.63 m.
These tailings materials were geochemically and mineralogically characterised to assess pyrite and chalcopyrite oxidation, acid mine drainage generation, and trace element mobilit...
pond inside.The tailing ore sample for this study was collected from Yangla Copper Deposit in Yunnan, China. The cores of Yangla Copper Deposit mainly contains
Partial seawater desalination treatment for improving chalcopyrite floatability and tailing flocculation with clay content. Author links open overlay panel Constanza Cruz a b, Jahir Ramos a, Pedro Robles c, ... First, a synthetic ore sample of 950 g was ground using a stainless steel laboratory ball with 0.5 L and a frother for 18 min. The ...
After the extraction of economic metals, the resulting mixtures are deposited as sediments over wide areas, forming distinctive tailing mounds at both active and abandoned mines [1,2]. The composition of mine tailings varies depending on the mineralogy of the ore deposit and the processing methods [3].
buffer). Then, the sample was treated with 25 μl of sodium dodecyl sulfate (SDS) (10%), 25 μl of proteinase K (20 mg/mL), and 3 μl of a 10 mg/ml Ribonuclease (RNase) solution, consequently. The treated sample was vortex-mixed and incubated at 37 °C for 60 minutes. After that 90 μl of a 5 M NaCl solution was added to the sample and vortex-
2. Material and Methods 2.1 Description of sampling sites The sampling site is a tailing dump of an anonymous mine in Japan. The ore minerals are mainly pyrite, sphalerite, chalcopyrite and galena, accessory Mn-minerals, the gangue minerals quartz and kaolin.
The pyrite grade in the fresh tailing sample and in the flotation product was determined indirectly from the content sulfur, copper and iron. Calculations carried out considering the elemental chemical composition presented in Table 1 and the mineralogical species that contained sulfur, identified by the XRD analysis, allowed to determine that the fresh tailings …
It turned out that chalcopyrite (Cu) and pyrite (S) was the main recoverable minerals in the tailing. In order to separate chalcopyrite from pyrite in low pulp pH, ammonuim humate (AH) was singled ...
2 Experimental 2.1 Tailings mineralogy and characteristics A representative sample was obtained from the Kooshk tailing dam. Although the d80 of particles size was 90 μm, particles with size of minus 53 μm was used for experiments. Particles were sized using cyclosizer. Figure 1 presents that about 50% of tailing sample is finer than 11 μm.
The tailing samples were taken from an abandoned deposit, in the north of Chile, and after an acid leaching copper was biosorbed, kinetics of adsorption and the equilibrium isotherms were studied, applying the Freundlich and Langmuir models. ... The Auxiliary Effect of Copper Ions on the Depressant Effect of Sodium Thioglycolate in Chalcopyrite ...
Here we present copper isotope values of 13 ore samples, three tailing samples, 20 water samples (surface and groundwater), and 94 soil samples (15 different profiles ranging in depth …
MATERIALS AND METHODS SAMPLE COLLECTION AND PREPARATION Sampling of base soil and amang (tin tailing) used in this study were carried out at Sungai Lembing disused mine area (Figure 1). A bulk soil sample from completely weathered profile (grade VI) was collected from weathered metasedimentary rock's outcrop (Figure 1(a).
Study on Flotability and Surface Oxidation of Sulfide Minerals from the Tailing of an Iron-Copper Mine Using Electron Probe Microanalyzer . × Close Log In. Log in with Facebook Log in with Google. or. Email. Password. Remember me on this computer. or reset password. Enter the email address you signed up with and we'll email you a reset link. ...
