Considering hydrocyclone operation for tailings dewatering …
In this operation, the tailings are initially sent to thickener and then mixed with cement-water mixture prior to its use in the underground mining. Data collection aimed at testing of varied cyclone geometries to define the limits of the laboratory unit. ... Within the scope of the study, improving the economy of CPB application at a copper ...
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Stability analysis of a copper tailings dam via laboratory model …
In this paper, a new copper tailings impoundment, the Datonggou impoundment located at Yumen, Yunnan province, southwest China, owned by Yuxi mine Co., was used as a case study to illustrate the physical model test. ... Construction of a tailings pond is a more complex operation than the construction of a conventional …
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Stirred-tank bioleaching of copper and cobalt from mine tailings …
The mine tailings near Taltal contained considerable amounts of copper (∼5000 ppm) and cobalt (∼115 ppm). After adaptation of the mesophilic consortium, 38% of Co and 86% of Cu were recovered in 2-L STR at 10% solid load after 12 days bioleaching at 30 °C. In a mini-pilot test in 20-L STR at 15% solid load, Co and Cu extraction …
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(PDF) Impact of tailings from the Kilembe copper mining district on
The abandoned Kilembe copper mine in western Uganda is a source of contaminants, mobilised from mine tailings into R. Rukoki flowing through a belt of wetlands into Lake George. Water and ...
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Heap Leach: Mining's breakthrough technology
New techniques for tailings treatment and sulfide ore recovery will see low-cost environmentally ... the following notable gold and copper HL operations have been commissioned: Veladero (Argentina ...
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Current state of fine mineral tailings treatment: A critical …
According to studies by Gordon and Bridge, 128–196 tonnes of combined copper tailings would be generated to produce 1 tonne of copper (Gordon, 2002, Bridge, 2000). Using Gordon's data, Onuaguluchi and Eren estimated a worldwide production of 2 billion tonnes of copper tailings in 2011 ( Onuaguluchi and Eren, 2012 ).
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Selective Separation and Recovery of Valuable Metals by
The combination of flotation and metallurgical processing to treat copper anode slime produces approximately 1400 tons of flotation tailings every year in Yunnan Province. These tailings contain a large amount of valuable metals. In this article, a vacuum distillation three-stage condensation process is proposed to efficiently and …
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Stability of Tailings Dam Constructed by both Upstream and …
The distance between the tailings pond and Dahongshan Copper Mine is about 8 km. The tailings pond is valley-type and constructed by the upstream method. It has been put into service since July 1997. At first Dahongshan Copper Mine started to discharge tailings to the tailings pond. After that Dahongshan Iron Mine began to pour …
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Tailings | SpringerLink
During operation tailings dams are mostly covered with water, and these wet covers prevent wind erosion . ... Dold B, Fontboté L (2001) Element cycling and secondary mineralogy in porphyry copper tailings as a function of climate, primary mineralogy, and mineral processing. J Geochem Explor 74:3–55
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OneMine | Newcrest's Industry First Application of Eriez …
In August 2018, the first full-scale HydroFloatTM cells for the recovery of coarse composited copper and gold were commissioned at Newcrest's Cadia Valley operation in New South Wales, Australia. The primary objective of the installation is to recover coarse value-bearing composites that are lost to conventional flotation tailings, …
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Biosynthesis of copper nanoparticles from copper tailings ore …
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 homogenized. ... Dissolution and concentration of copper from tailings. In order to extract the copper from the solid matrix, the tailing was treated by curing with ...
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Application of steel slags, ferronickel slags, and copper …
Leaching or weathering for copper slag and tailings is a recognized pollution source of toxic metals in local environments around any mining operation. This pollution is mainly a risk when stockpiles are in exposed sites without any measures to reduce pollution risks ( Punia, 2021 ).
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Mine tailings: reprocess, recover & recycle
Water remains one of the greatest risks to mining operations globally. It is essential to the extraction of metals, and can be very expensive to source, treat and recycle or replace. ... The remaining 10% of copper, around 111kt, went to tailings. If the average copper price in 1999 was US$1,500/tonne then that 10% represented US$166.5 million ...
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Finding New Life for Tailings: Sustainable Technology for Co …
Pyrite is a common mineral in many types of metal ore deposits, and it is often found in association with other minerals that contain gold, copper, cobalt, and zinc amongst others. Pyrite-containing tailings are commonly produced in mining operations that extract these types of minerals.
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A Review of Nchanga Tailings Dam Operations and …
The tailings originate from the giant porphyry copper deposit Chuquicamata (Chile), and were deposited in different basins with varying times of surface exposure (0 to five years) to the hyper ...
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Tailings.info What Are Tailings?
Introduction. Tailings consist of ground rock and process effluents that are generated in a mine processing plant. Mechanical and chemical processes are used to extract the desired product from the run of the mine ore and produce a waste stream known as tailings. This process of product extraction is never efficient, nor is it possible to ...
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A critical review of the effects of gold cyanide-bearing tailings
This places the onus on mining operations to document that no risk to wildlife exists. ... For example, wildlife deaths are more likely to occur at mines possessing copper–gold ores due to the formation of copper–cyanide complexes in the tailings water which is used by birds (Donato, 1999) and bats (Clark, 1991).
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Ero Copper Corp. | Tailings Management
The Xavantina Operations initiated a new project in 2019 to extend the inert tailings storage area by 79 thousand square meters on the mine property, extending the deposition capacity to 15 years. The expansion is crucial for the longevity of the operation and allows an adequate area within the safety and environmental regulations.
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Processing Tests, Adjusted Cost Models and the Economies …
TSF near Taltal (Google Earth) with drilling locations. The tailings have their maximum thickness (15 m) in the northern area (TT 122 to TT 124), where samples were taken up to a depth of 11 m and ...
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TENORM: Copper Mining and Production Wastes
Copper heap leach operations are much smaller than copper dump leaches. On the average, heaps contain between 100,000 and 500,000 metric tons of ore. ... The slag tailings from these operations are co-managed at on-site tailings piles with the tailings from ore beneficiation. Slag tailings ponds range from 142 to 2,270 …
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DRDGOLD to determine economic viability of copper recovery from Copper
Copper 360 estimates that there are about 50-million to 60-million tonnes of dump material with grades varying between 0.18% and 1.5% copper in the dumps, with the potential to contain 450 000 t ...
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Using tailings to get to net zero
In 2019, a pilot test was completed at Gahcho Kué using 250 kg of tailings. A concentrated stream of 10% CO2 was injected into a 6-metre long tailings pipeline at a rate of about 1 litre per minute. Dipple says the pilot was successful – for 44 hours there was no detectable CO2 coming out the back end of the pipeline.
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Strength and durability characteristics of copper tailing concrete
Copper tailings has maximum amount of silica (75%). In comparison with the chemical composition of natural pozzolonas of ASTM C618-99, the summation of three oxides (silica, alumina and iron oxide) in copper tailings is 90.76%, which exceeds the 70% requirement for class N raw and calcined natural pozzolanas. Therefore, copper …
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Review of Practices in the Managements of Mineral Wastes …
The pollution of water and soil by copper, zinc, iron and sulphate ions that had been experienced between 1935 and 1996 in Albania in relationship with the storage, alongside abandoned mines, of approximately 15 million tonnes of sulphide-rich solid wastes (pyrite) and 11,830.945 tons of flotation tailings generated by the selective …
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Development of the Kolwezi Tailings Copper/Cobalt Flowsheet
It is capable of producing high q uality cathode (>99.9%) with recoveries. to metal of 93% Cu and 76% Co. The process flowsheet is described in the paper. It incorporates simultaneous leaching of ...
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Retreatability analysis of the Musina copper mine tailings …
In most of these operations, extraction of copper (> 90%) was achieved by bioleaching, using microbial consortium, where elemental sulphur was added to the tailings and the pH of leach liquors allowed to fall to ∼pH 1, at which point anaerobic conditions were imposed, Ahmadi et al. .
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Recovery of pyrite from copper tailings by flotation
1. Introduction. The concentration of sulfide copper minerals by means of flotation generates large volumes of tailings. It is estimated that one hundred twenty-five tons of tailings are generated per one ton of produced copper, and its generation is on a continuous rise because of the decrease of the copper grades [1].On the one hand, the …
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Processing Tests, Adjusted Cost Models and the …
The copper grade is substantially higher compared to the average copper grade in tailings from the 1930s of 0.33% and far above the average of SERNAGEOMIN's cadaster of mine tailings (sampling only the first meter), which gives copper grades of 0.27% for inactive and abandoned tailings <10 M t . The investigated TSF was in operation between ...
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An experimental comparison: Horizontal evaluation of …
The specific experimental operation and parameters are described below. 2.2.1. Flotation-magnetic separation method. The flotation reagents of butyl xanthate, isoamyl xanthate, and terpineol were used. The copper concentrate and flotation tailings were subjected to a series of crushing, ore grinding, flotation, and concentration …
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The long-term environmental impacts of the …
On the 4 th August 2014 a tailings impoundment failure at the Mount Polley gold and copper mine in British Columbia, Canada, released approximately 25 million m 3 of solid and liquid waste into ...
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