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The grades of chalcopyrite, galena, and sphalerite in the tailing were very low. (2) ... The XRD (a) and SEM (b) of the cyanidation tailing sample. From the chemical composition analysis and the XRD result, it can be seen that the pyrite and quartz were the major minerals in the cyanidation tailing. The valuable metals were mainly copper ...
In this work, the interactions between one sample of silver-bearing tailing (223 g/t silver) and chalcopyrite during bioleaching by mixed moderately thermophilic culture were investigated.Bioleaching results showed that copper can be almost totally extracted from chalcopyrite as the result of addition of the silver-bearing tailing, and silver (Ag) …
Two grain mounts were made for the original tailing sample, as well as for the MR samples of 400 °C, 500 °C and 600 °C, to improve the measurement statistics and identify a sufficient number of the minerals of interest which are typically present in minor abundances in the tailing materials. ... Cu is present primarily in chalcopyrite and ...
They reported that risk of mine tailing was successfully controlled by aided phytostabilization and Fe-rich amendments acted as excellent stabilizers of heavy metals in mine tailing. Further, Li et al. …
Silver ion can be useful in improving chalcopyrite bioleaching efficiency. In this work, leaching kinetics of this process was investigated using silver-bearing solid waste under different chalcopyrite/solid waste ratios. Bioleaching behavior indicates that silver-bearing solid waste can enhance the bioleaching process, and the redox potential is …
The copper ores from El Teniente and Andina mines are mainly composed of chalcopyrite (86%–90% and 81%, respectively) [57,58]. It is worth highlighting the presence of molybdenite in Chilean …
To form the concentration series, several in situ samples were collected during the measurement campaign at Pyhäsalmi. The in …
These tailings are rich in sulphide minerals particularly pyrite and chalcopyrite. Oxidation of these minerals produces the well-known problem of acid mine …
The original tailing sample (T) contains a high proportion of quartz, sphalerite, and other phases, such as pyrite, chalcopyrite, arsenopyrite, and galena. However, a decrease in the intensity of the characteristic peaks (except for the quartz phase) of T-150 can be noticed, indicating that the HMs in the tailings are leached in …
dominant copper-bearing mineral was chalcopyrite, which was closely intergrown with orthoclase and muscovite rather than quartz. The flota-tion tailings sample still contained 3.28wt% liberated chalcopyrite and 3.13wt% liberated bornite because of their extremely …
Chalcopyrite $(ce{CuFeS2})$ is the most common copper bearing mineral on earth (Approximately 70% of the world's copper reserves are contained in the mineral chalcopyrite), but also the most stable minerals because of its structural configuration, face-centered tetragonal lattice (Ref.1). At present, there are basically two main methods ...
2.1.4. Sample Selection 5 2.1.5. Testing of Samples 6 2.2. Essential Components of Process Support 8 2.2.1. Support of the Process Design by Sampling and Testing 8 2.2.2. Process Plant Initial Capital Cost Estimating 10 2.2.3. Process Plant Operating Cost Estimate 10 2.2.4. Off-Site Treatment of Product(s) 11 2.2.5. Use of Experts 12 2.2.6.
This work provides a feasible method for the treatment and recycling of low-grade ores, tailings, and solid wastes. But balancing energy consumption of aeration and …
KAX conditioning and agglomeration were conducted on a finely ground chalcopyrite sample (D 50 = 3.5 μm) or a mixture of finely ground chalcopyrite and quartz (D 50 = 6 μm) at the ratio of 1:1 (w/w). Before agglomeration, 20 g of samples were suspended in 400 mL of distilled water, then the suspension was conditioned with the …
The second sampling site (hereafter named TA) is a small and well-defined open-air tailing dump. It is located at the bottom of the WR pile and occurs as an elongated, flat body (about 10 m in length and 1 m in height) lying adjacent to a small stream collecting waters from some mine adits (Fig. 4 ).
Section snippets Characterization analytical tests. The copper tailing in this study was obtained from Liaoning province, China. 20 g of the sample was ground to less than 74 μm and dried at 90 °C for 24 h.The sample was prepared for the analysis of chemical composition by an Atomic Absorption Spectrophotometer (AAS, WFX-130A, …
The chalcopyrite sample was purified by means of hand sorting and electric separation. Mineralogical composition of ores used in the test was determined using a Rigaku X-ray diffractometer (XRD). ... The obtained concentrate and tailing samples were dried and weighed to calculate the recoveries of the chalcopyrite or the talc, …
The sample was crushed using a jaw crusher and a rolls crusher and screened to collect − 3.35 + 0.71 mm size fractions. The processed mineral samples were then sealed in polyethylene bags and stored in a freezer to minimise further surface oxidation. ... Since the prefloat cleaner concentrate reports to the final tailing, …
This paper describes a study aiming at producing a magnetite pellet feed as a by-product from a dam chalcopyrite flotation tailings and generating free magnetite non-magnetic rougher tailings. ... 2.1 Sample Characterization ... Li M, Xu G, Zhang B, Ding Q, Chen X (2020) Experimental study ion the utilization of copper tailing as micronized ...
Test 6, Cleaner Tailing (0.47% Cu): Largely pyrite. The majority of the chalcopyrite is combined with pyrite (est. 30% free). Test 7, Flotation Tailing (0.35% Cu): Largely gangue minerals. The majority of the chalcopyrite (est. 75%) is free. Test 7i 1st Cleaner Tailing (0.64% Cu): Largely pyrite. About one-half of the chalcopyrite appears to be ...
These tailing dumps can render the local underground water resources poisonous. As these cyanides are toxic and hazardous, their replacement is highly desirable. ... sodium cyanide by chitosan polymer …
It turned out that chalcopyrite (Cu) and pyrite (S) were the main recoverable minerals in the tailing. In order to separate chalcopyrite from pyrite in low pulp pH, …
Sampling. Typical profile with both an oxidized layer and an unoxidized layer in the tailings pond was selected. According to the color of the section, knocked out the block samples of surface hardened layer, and used the groove method to continuously sample scientifically (Huang et al. 2014). The green–gray tailings at the profile bottom …
Molybdenite particles in this sample appear to have a size limitation, particles smaller than 10.0 μm, despite being liberated, are transferred into copper concentrate or molybdenite tailings. ... Distribution of minerals (left and bottom) and interlocking between them (right) in the molybdenite flotation process tailing (Cpy: chalcopyrite, Cv ...
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.
Sulphidic mine tailings are among the largest mining wastes on Earth and are prone to produce acid mine drainage (AMD). The formation of AMD is a sequence of complex biogeochemical and mineral dissolution …
This paper describes a study aiming at producing a magnetite pellet feed as a by-product from a dam chalcopyrite flotation tailings and generating free magnetite …
Definitions. "Pulp," in flotation terminology, is a freely-flowing mixture of powdered ore and water. "Pulp density," when the phrase is applied properly, indicates the specific gravity of the pulp. "Percentage of solids" means the ratio, expressed as a percentage, of the weight of the solids in a pulp to the total weight of pulp.
the metals from the sulfidic tailing sample, as also observed in the response surfaces (Figs. 3 and 5 ; Pb: about 70%, 1 h, experiment number 2; Cu and Zn: about 30%, 4 h, experi -
The tailing sample comprised . samples taken in the morning, afternoon, and evening on one sampling day. ... (FeS2), chalcopyrite (CuFeS2), sphalerite ((Zn,Fe)S), and galena (PbS) generated H2O2 ...
The imbalance between raw materials of high economic importance and their supply has increased the search for new approaches to obtain valuable elements from mining tailings. In this study, the extraction of copper, zinc, and lead from sulfidic tailing in sulfate–chloride media was investigated. A 33 Box–Behnken design was applied to …
Pure mineral sample of chalcopyrite was obtained from Lijiang, Yunnan Province, talc and serpentine were obtained from Shijiazhuang, Hebei Province. XRD and XRF analysis of the sample are shown in ...
The formulas are based on assays of samples, and the results of the calculations are generally accurate— as accurate as the sampling, assaying, and crude ore (or other) tonnage on which they depend. Two-Product Formulas. The simplest case is that in which two products only, viz., concentrate and tailing, are made from a given feed.
chalcopyrite tailing, sphalerite froth, sphalerite tailing, and pyrite ... In particular, a case is considered in which the sample characterization by the separate use of a single technique fails ...
Test 6, Cleaner Tailing (0.47% Cu): Largely pyrite. The majority of the chalcopyrite is combined with pyrite (est. 30% free). Test 7, Flotation Tailing (0.35% Cu): Largely …
and chalcopyrite (CuFeS2), while the main oxides are hematite (Fe2O3) and magnetite (Fe3O4) (Florida mine information). Additionally, hyperspectral analysis performed with ... To the sampling, 1 kg of tailing samples was collected from the surface of the paste-tailing deposit. Sampling considers paste samples from the first 15 cm of …
