Valorisation of a flotation tailing by bioleaching and brine …
Pyrite bioleaching (r1) produces sulphuric acid and Fe(III). ... 74.3 ± 4.2% of the indium and 77.8 ± 1.3% of cobalt from flotation tailing (Table 2), three strategic elements of great importance for the European Union ("Critical Raw Materials", 2018). Furthermore, Ag, Pb and Au, elements with great value in the market, remain in …
Recovery of pyrite from copper tailings by flotation
Abstract. Tailings that are generated in the copper concentrate production contain great amount of sulfide mineral, in particular pyrite. Pyrite in contact with water …
Pyrite behaviour in a tailings pond
The composition of the initial poured tailing met the specifications of a pyrite pulp with 30% solids. The chemical composition of the aqueous phase of this pulp is shown in Table 1 (AMD initial). As described, the solid waste was sent to the pond through a 3-km open-air channel taking advantage of gravity.
Comparison of Anionic, Cationic and Amphoteric …
Aerophine 3418A is an aqueous solution of sodium diisobutyl dithiophosphinate and has been widely used in the flotation of copper and lead-sulfide minerals, particularly those associated with ...
Bioleaching of high pyrite carbon-rich sphalerite
Bioleaching study of two carbon-rich preflotation tailing samples from Kooshk lead–zinc mineral processing plant using a mixture of mesophile bacteria indicated the following results: 1. More than 60 % of the particles of both samples were 11 μm. Pyrite was the major phase with about 65 %, Zn assay was about 4.42 and 4.31 %, respectively.
Occurrence Characteristics of Fine-Grained Pyrite in …
The framboïdal pyrite, agglomerated pyrite, and pyrite coexisting with other minerals with a particle size larger than 37 μm can be easily precipitated in tailings, …
Pyrite Flotation Separation and Encapsulation: A …
Pyrite flotation separation and encapsulation in tailings dams is proposed as a viable way to chemically stabilize tailings. Characterization of potential acid mine …
Frontiers | Optimize the Preparation of Novel Pyrite …
The large amount of untreated pyrite tailings has caused serious environmental problems, and the recycling of pyrite tailings is considered as an attractive strategy. Here, we …
(PDF) Process Mineralogy for Evaluating Mineralogy, Physical …
Under the tropical climate; Pongkor sulfide gold deposit altered intensively, Sampling to obtain tailing samples was conducted however, the oxidation process on the bed rocks at Pongkor. ... (2004) indicated that 90% orthoclase, calcite and pyrite (Table 4). Of the gold-bearing sulfides belong to size of 20 - 100 three samples, only Sample AT ...
Distribution patterns of contaminants in the Mogale Gold tailing …
The Mogale tailing dam is over 3 km by 2 km in length and breadth, respectively, and about 60–75 m high (Fig. 1).The water flow out of the Mogale tailing dam is controlled through a central penstock that discharges into a return water dam (Oelofse et al. 2007).The central penstock controls the general hydrological gradient, the fluid flow, …
Release of Heavy Metals from the Pyrite Tailings of Huangjiagou Pyrite
The pyrite tailings of the Huangjiagou pyrite mine mainly contained six types of heavy metals, namely Fe, Cr, Cu, Mn, Zn, and Ni. The main mineral compositions and contents of the pyrite tailing were kaolinite, pyrite, and calcite. For Fe, Cu, Mn, and Ni, low initial pH, high temperature, and high LS ratio significantly promoted their release.
Biohydrometallurgical/UV production of ferrous sulphate …
Highlights There are more than 300 million tonnes of coal mining tailings in Brazil. Coal tailings contain variable amounts of pyrite (FeS 2), generating acid mine drainage. One possible way to minimise the effects of coal tailings is to convert the pyrite into a valuable product. The coal tailings were processed by bioydrometallurgical and UV …
(PDF) A Study on Selective Flotation in Low and High
is pyrite (Table 2). Figure 2 displays the mineralogical status of the. studied ore in the case of low pyritic feed. As seen, ... and tailing, respectively, C is the fraction of the total.
Insights on the effect of pyrite liberation degree upon the …
In order to validate the results obtained by the ABA static test while taking into account pyrite liberation degree, kinetic tests were performed on both flotation feeds (composite 1 and 2) and the resulting tailings from "DPM-Ch flotation" test (tailings 1 and 2, Table 1) using a small-scale humidity cell tests (Cruz et al., 2001) modified ...
Research on Beneficiation and Reprocessing of Gold Tailings
The inlay of gold, minerals and pyrite is very close, and the gold content of the ore sample is relatively small, about 0.13g per ton. Recycling of its metal substances.
Improved recovery of a low-grade refractory gold ore using …
Finally, portions of potassium amyl xanthate (PAX) were added to recover all remaining sulfides (primarily pyrite). Table 2 shows the conditions of the selective flotation procedure. ... The presence of 31.1% As in the tailing showed that the removal of As by selective flotation method is not warranted. The presence of about 22.7% of Sb in ...
Current Approaches for Mitigating Acid Mine Drainage
Pyrite, when exposed to air and water, releases water soluble components such as Fe 2+, SO 4 2− and H + (see reaction 1 in Fig. 1).The Fe 2+ produced is oxidized into Fe 3+ according to reaction [2] (Fig. 1).This reaction is the "rate limiting" step as it is pH dependent; Fe 3+ in turn either hydrolyzes into amorphous Fe-oxides [3] (Fig. 1) or …
(PDF) Role of starch and metabisuphite on pure …
Starch and meta bisulphite were used as a depressant for pure pyrite sample and a pyritic copper ore at two different pHs values. pH was 6.5 and 10 in pure pyrite study while it was 6.9 and 12 in ...
Recovery of pyrite from copper tailings by …
Tailings that are generated in the copper concentrate production contain great amount of sulfide mineral, in particular pyrite. Pyrite in contact with water and oxygen might oxidize...
Stable thallium (Tl) isotopic signature as a reliable source …
As exhibited in Table 1, the sediments were mainly composed by quartz, illite, and muscovite, followed by sulfides (i.e., pyrite and pyrrhotite), calcite, Fe/MnO x, and Tl oxide. ... (B3 to B6) of the midstream was pyrite tailing (the contribution up to 50%), while the lower part (B7 to B8) was sewage treatment (the contribution up to 76%) ...
CLEAN TAILING RECLAMATION: REVEGETATION OF …
particularly pyrite (FeS2). Pyrite, which is commonly associated with metal ore deposits, is not recovered by milling activities and remains in tailings. Upon exposure to the atmosphere, pyrite oxidizes, releasing acidity, which in turn leads to increased solubility of heavy metals often present in tailings.
CN101234363B
The invention relates to a method to produce high grade sulfur concentrate by using low grade pyrite ore, which takes pyrite ore containing 8 percent to 25 percent sulfur as raw material which is smashed and milling ground to allow the pyrite ore to be dissociated from rocky mineral monomer. Ore slurry is arranged on spiral chute to obtain …
Geotechnical Properties of Mine Tailings | Journal of …
For example, the Caren tailing impoundment in central Chile was retained by an earth-fill dam with a maximum height of 108 m (James et al. 2011), the Bahuerachi tailing dam in Mexico was designed with a maximum height of 100 m with the capacity of 200 million m 3 tailings, and the Yuhezhai iron tailing dam in Yunnan, China, was designed to a ...
Pyrite enhanced chlorination roasting and its efficacy in gold …
The chemical analysis of the gold tailing (RGT) and pyrite are shown in Table 1. The occurrence of gold in the different phases of the gold tailing is shown in Table 2 (Detection was carried out in Changsha Research Institute of Mining and Metallurgy, China), it indicates that exposed gold is only 13.10% and up to 86.90% of gold is …
Micro-structure and morphology of tailings sand under …
where M 1 is the mass percentage of pyrite (FeS 2) in original tailings sand and M 2 is the mass percentage of pyrite in oxidized tailings sand.. It can be seen from Table 2 that the actual ...
BG
The growth of microorganisms in bare mine tailings is usually limited by the availability of organic carbon (Schimel and Weintraub, 2003). In our study, pyrite oxidization in mine tailings further increased the acidity of the mine …
Pyrite Flotation Separation and Encapsulation: A …
The clean pyrite concentrate was obtained on a vibrating table from the underflow of the Chinchan tailings dam and classified in 100, 140, and 200 mesh (group one, two, and three, respectively). On the other hand, the overflow of the Arirahua tailings dam of 200 mesh was used for the fines.
Environmental Impact Variability of Copper Tailing …
Acid mine drainage and potentially toxic elements release are a major source of pollution in sulfide-rich mining sites. Pyrite is the most impacting mineral due to its high acidification potential when it reacts with water under oxidizing conditions. At the Fushe Arrez dressing plant in Northern Albania, a volcanic massive sulfide copper mining …
Recovery of sphalerite from a high zinc grade tailing
The obtained Zn grade, sphalerite and pyrite recovery are 28.60%, 70.05 and 31.95%, respectively (for 8 min flotation at pH 5.5). While for the same flotation time at pH = 10.5, the sphalerite and pyrite floatability significantly decrease to …
Photomicrography and spectrum of arsenopyrite (ASP) …
Only traces of As (0.41%) in pyrite were observed in one sample of R4, so pyrite is not considered in Table 3. Other phases identified by SEM-EDS, but lacking As were Au, PbS and alumino-silicates.
