In the copper tailings, typically mycorrhizal species A. stolonifera, C. epigejos, and T. farfara realized P uptake only by their root mechanisms, which resulted in P deficiency in the case of …
The operational and environmental cleanup activities at Kennecott Utah Copper LLC's (Kennecott) Bingham Canyon Mine, Copperton Concentrator, Smelter, Refinery, Tailings Facility and the various ancillary facilities are regulated under a number of federal and State programs with authority to oversee the work pursued by Kennecott and other third parties. The …
Future scenario narratives are leveraged to create prospective life cycle assessment models. Copper tailings reprocessing can mitigate GHG emissions and toxicity …
The industrial plant processes around 24.0 Mtpy of copper ore containing a feed grade of around 1.0 wt% of Cu, generating close to 23.5 Mtpy of copper tailing finer than 85 µm. This material is currently disposed in a downstream raising dam, containing between 10% up to 20% of magnetite (FeO.Fe 2 O 3 ) finely disseminated in gangue minerals.
Despite several studies applied isotopic tools to porphyry copper mine tailing impoundments, they mainly focused on tracing water sources and pathways, whereas only a few studies used these tools for quantifying tailings seepage towards aquifers (e.g., Allen and Voormeij, 2002). Based on our knowledge, the isotope geochemistry has never been ...
Pot experiment. Based on the analysis of physicochemical structure characteristics of copper tailings, combined with the basic nutrient requirements for plant growth, 4% mass fraction of earthworm ...
Copper mine tailings from the Assarel Concentrator Plant (Bulgaria) can be successfully used as precursors for geopolymers. The replacement of 25 wt.% of fly ash with …
Determination of copper tailings and plant characteristics. The analytical technique proposed by Bao (2000) was used to determine the pH, available copper (Cu), organic matter, ammonium nitrogen (NH 4 +-N), available phosphorus (P), and available potassium (K) as physicochemical properties of the copper tailings.
to early plant colonizers' development in soils from copper mining tailings. We used a pioneer plant Baccharis linearis as a study model, and substrates originated from two abandoned copper ...
Therefore, with an enrichment ratio of 56.70, the reduction in recovery is reasonable. Assessment of the recovery values of copper in the final molybdenum tailings (or final copper concentrate) also shows that a cleaner stage of flotation has resulted in a 10.0% increase in copper recovery to the final copper concentrate.
's scope of delivery consists of the engineering and supply of a Planet Positive copper tailings dewatering plant unit including an HRT High Rate thickener and Larox ® FFP3512 filters and auxiliaries with latest design hole-less filter cloths and single polymer plates lowering operating costs. The high-capacity Larox FFP3512 filters are ...
To confirm the efficacy of EKR in the extraction of tailing metals, two kinds of monocotyledonous plants of Poaceae with high biomass production, acid tolerance, and metal removal characteristics, vetiver grass and sorghum, were planted for 14 and 45 days, respectively [24]. 10 plant seeds were uniformly planted in each planting pot (D×H=11 cm ...
4.2 Copper waste Tailings from copper plants are much more chemically reactive than coal waste. Physically they may have clay and sands and generally they are fine (usually less than 0.5 mm in the upper size limit). For simplicity, this section will discuss tailings originating from a …
90–95% of plant tailings are produced from the flotation pr ocess [31 ... For recovering copper from tailings, regrinding is needed to liberate copper minerals. from locked grains.
Tailings samples were collected from a post-operative copper mine tailing site, which was active until 2006, located at latitude 24° 9′58.33″ S and longitude 69° 2′33.36″ W at an altitude of 3200 m.a.s.l. The tailing contains high concentrations of metals such …
The majority of copper mines generate a large quantity of tailings after their concentration processing. The flotation tailings are, in general, either piled up or stored in dams, although most ...
In recent years, the solid wastes from the coal industry have been widely used as soil amendments. Nevertheless, the impact of utilizing coal slime for copper tailing restoration in terms of plant growth, physicochemical characteristics of the tailing soil, and microbial succession remains uncertain.Herein, the coal slime was employed as a modifier into copper tailings. Their …
associated functional genes in a copper tailings pond and to elucidate the specific rhizosphere effects of distinct plants on the abundance and activity of these genes. MATERIALS AND METHODS Study Areas and Sample Collection The Shuimuchong copper mine tailing wasteland (30 55′N, 117 50′E) is located in the Tongling copper mine area, Anhui
When low quality ores are processed and the gold price is decreased, many copper–gold plants have to close the CIL circuit and discharge flotation tailings directly to the tailing dams. To recover the gold from flotation tailings, it is important to understand limits of the CIL circuit and then develop an economically viable process.
Chinalco, Toromocho copper mine uses four beneficiation plants with the tailings from each plant dewatered in a 43m diameter high density -type thickener. Since the installation in 2014 there have been multiply mechanical problems. There have been several tank, bridge, and mechanism failures (Valderrama, 2016).
Tailings generally leave the mine processing plant in a slurry form (diluted with water) and are often stored on the surface in tailings storage facilities (TSFs). Safe and effective operation and closure of TSFs is a BHP priority. ... In 2020, BHP launched a tailings challenge with the aim of developing innovative solutions to repurpose copper ...
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 spontaneously ...
Americas Tailing will conduct the PUCE work programs to advance investigation of the potential to transform tailings from one of BHP's copper mines into a bio-mineral fertilizer. Planned work will include conducting pilot plant and laboratory test work, growth tests, process and equipment design, and market studies.
Download scientific diagram | Mufulira TD10: (A) the copper tailings with some growing plants. (B, C) The ever-increasing plants in the tailing show the resistance capacity. (D) The wastewater ...
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 district, pyrite was …
Thereby, an improved understanding of copper tailings behavior results which simplifies filtration plant operation. Copper tailings are used because they hold an outstanding position in the discussion about tailings, as they are responsible for nearly half of the global volume of tailings (Baker et al., 2020).
The results revealed that the copper mine tailing from the Assarel Concentrator plant in Bulgaria has a great potential for valorization by using it as a precursor for obtaining geopolymers. This study presents for the first time a detailed characterization of copper mine tailing from Assarel, Bulgaria as a raw material for geopolymers obtained ...
Plants must deal with harsh environmental conditions when colonizing abandoned copper mine tailings. We hypothesized that the presence of a native microbial community can improve the colonization of the pioneer plant, Baccharis linearis, in soils from copper mining tailings.Plant growth and microbial community compositions and dynamics were determined in cultivation …
Ten strains of Cu-tolerant bacteria with potential plant growth-promoting ability were isolated by selecting strains with the ability to use 1-aminocyclopropane-1-carboxylate as a sole nitrogen source (designated ACC-B) or fix nitrogen (designated FLN-B) originating from the rhizosphere of plants growing on copper tailings.
The results demonstrated that fertilization with these varying proportions of amendments significantly enhanced the physical structure and nutrient content of the copper …
From inception, Tailings Leach has been developed in three stages. The operation started with leaching of low-grade tailings using strong sulphuric acid followed by solution recovery and …
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 …
Copper ore mining and processing release hazardous post-flotation wastes that are difficult for remediation. The studied tailings were extremely rich in Cu (1800 mg kg −1) and contaminated with Co and Mn, and contained very little available forms of P, Fe, and Zn.The plants growing in tailings were distinctly enriched in Cu, Cd, Co, Ni, and Pb, and the concentration of copper …
Castillo et al. investigated at how mixing circumstances, solids ratio, water salinity, and polymer dose affected the flocculation of copper flotation plant tailing. According to them, …