Valuation Method Of Mine Tailing

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Evaluation of heavy metal contamination in copper mine tailing …

Study area. Two sites in Kitwe and one in Mufulira in the Copperbelt Province of Zambia were selected for this study (Fig. 1).Study sites were Cu and Co mining waste dumpsites and abandoned ...

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Mine tailings: reprocess, recover & recycle

Say a copper mine produced 1Mt of metal in 1999 at 90% recovery. 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 of metal. Fast forward 20 years and at today's price, US$5,842/tonne, if that material could be …

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Evaluation of Cement-Stabilized Mine Tailings as Pavement …

As huge volumes of materials are required for road construction purposes, they can be a good resource to accommodate waste tailings of mining, particularly where engineers face scarcity of appropriate materials (Zahri et al. 2016).The Boukhadra Mine tailings are of marl, limestones and iron ore waste types, and there is an interest in the …

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Global-scale impact analysis of mine tailings dam failures: …

Irrespective of ore type, the tailings dam failures of Brazil caused the greatest impacts, with a total magnitude index value of ~ 105 from 16 incidents (4% of the total number of failures). In contrast, the sum of the magnitude index was ~ 76 in the US due to 115 incidents (32% of the total number of failures).

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Towards mine tailings valorization: Recovery of critical …

The economic potential is a reference value for the total REE value of the mine tailings. The economic potential of these TSFs is shown as supplementary …

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Recycling mine tailings in chemically bonded ceramics – A review

This non-exhaustive review was conducted using conventional content analysis methods, where information is derived directly from the text data with the aim of scoping the potential of the chemically bonded ceramics methods in utilizing mine tailings as raw material, and identifying gaps in the knowledge related to that.

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MANAGEMENT OF TAILINGS: PAST, PRESENT AND …

for high tailings facilities in the deep valleys of the Andes in South America. 2.1 NET PRESENT VALUE ACCOUNTING APPLIED TO TAILINGS MANAGEMENT There is a …

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The Stabilisation of Mine Tailings by Reactive …

The disposal and subsequent encapsulation of mine tailings in a cost-effective and environmentally secure and responsible manner is one of the principal issues facing any modern mining project. A careful assessment of all options available for the capping and subsequent remediation of tailings is important because it can result in …

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Modelling and optimization of gold mine tailings based geopolymer …

Materials and methods. Gold mine tailings slurry which was obtained from Bergama Ovacik Gold Mine Treatment Plant, Turkey, was used as alumina silicate material. The slurry sample was dried at 105 °C for 2 h and crushed in a grinder and then sieved to 180 μm. ... Value of R L factor gives information about type of isotherm. If value of R L ...

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How to generate value from tailings with reprocessing to be …

Whether driven by regulatory compliances, tailings dam failure and water scarcity, mine tailings can well become a strong business case in the near future. Due …

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Evaluation of acid mine drainage (AMD) from tailings and …

The pyrite content in the mine tailings sample was approximately similar in the three estimation methods; however, in the case of the chemical methods there is a difference of 0.5%, probably due to the fact that aqua regia is chemically more aggressive and therefore, dissolves a greater amount of iron as seen in Table 5 for the reference …

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Recent practices in mine tailings' recycling and reuse

For example, mine tailings production in Chile is 1.6 million tons per day and it is estimated that 17.7 million tons of mine tailings are being generated from South African gold mines [2], [3]. Mining activities in China affect 33,000 hectares of land, 13% of which is due to tailings dams.

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How to generate value from tailings with reprocessing to …

A standard method of reprocessing involves dragging tailings from an existing dam back to the concentrator and using required mineral processing solutions to liberate the valuable metals. The ...

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Life cycle cost estimation and environmental valuation of coal mine …

These options were belt press (OPT 1), tailings paste (OPT 2), thickened tailings (OPT 3), and OPT 1 with technology improvement and renewable energy sources (OPT 1A-C). The results revealed that

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Research paperLife cycle cost estimation and environmental …

The authors used NPV to compare each option for the disposal of coal mine tailings and, subsequently, to determine the most cost-effective strategy for the mine …

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The Reprocessing and Revalorization of Critical Minerals in Mine Tailings

Mine tailings, the byproduct of mining and mineral processing, are increasingly mass produced as a result of increased demand for metals and minerals as well as the advancement in technology that allows for the exploitation of lower-grade ores. Lower grades can increase the volume of tailings that may contain new gangue …

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Review of Practices in the Managements of Mineral Wastes …

The method selected in the storage of mine wastes mainly depends on their chemical and physical features, the topography and climatic conditions of the storage areas together with the socio-economic context of the locality where a mine or an ore concentrator operates, including costs related to tailings processing, transport and …

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Feasibility of re-processing mine tailings to obtain critical …

The real options valuation method aims to protect and increase the economic return from a project (Savolainen, 2016) and is applied predominantly in …

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Efficient and durable uranium extraction from uranium mine tailings

Here we show that the photoelectrochemical (PEC) method could effectively resolve the aforementioned drawbacks of PC methods. By applying a bias potential on the photocatalyst (Figure 1 B), the PEC method enables much faster U extraction with exceptional stability, compared with the PC method operating under …

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About Tailings – Global Tailings Review

Tailings is a common by-product of the process of extracting valuable minerals and metals from mined ore. They usually take the form of a liquid slurry made of fine mineral particles, created as mined ore is crushed, ground and processed. Effective tailings management is integral to the safe and sustainable production of metals and minerals.

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MINE TAILINGS FACILITIES: OVERVIEW AND INDUSTRY …

Mine tailings are the waste material that remains after the economic fraction has been extracted from the mineral ore. Tailings consist of a slurry of ground rock, ... Common methods of tailings embankment construction Exploration Site selection, design and permitting Construction Operations Closure 5-25 5-10 2-4 20-100 5-50 Perpetuity

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Mining tailings and alkali activation: a comprehensive

From Fig. 11, it is possible to identify the main types of tailings that were covered by the studies, such as "gold mine tailing/gmt," "iron ore tailing/iot," "red mud," "copper mine tailing," and "vanadium tailing," in order of occurrences. It is also possible to identify the use of "sodium hydroxide/NaOH," "KOH ...

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Ecological evolution during the three-year restoration using

The vegetation coverage rate in the tailing pond increased annually and reached a maximum of 90.2 % after three-year revegetation using the RSC method (Fig. 2), which was much higher than that achieved by the complete soil-covering revegetation (59.7 %) and was equivalent to that achieved by the method using rhizosphere …

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Feasibility of tailings retreatment to unlock value and …

pH of tailings The Louis Moore Mine tailings have pH values ranging from 7 to 9, averaging 8. The neutral to weak basic conditions throughout the tailings dump can be attributed to the presence of dolomite (primarily associated with the mineralization) in the tailings. Residual lime used in pH adjustment during cyanidation may

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Process effluents and mine tailings: sources, effects and

Increasing population levels, growing economies, rapid urbanization and changes in consumption patterns have increased the demand for raw materials such as …

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The Reprocessing and Revalorization of Critical Minerals in …

Mine tailings, the byproduct of mining and mineral processing, are increasingly mass produced as a result of increased demand for metals and minerals as …

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MANAGEMENT OF TAILINGS: PAST, PRESENT AND …

for high tailings facilities in the deep valleys of the Andes in South America. 2.1 NET PRESENT VALUE ACCOUNTING APPLIED TO TAILINGS MANAGEMENT There is a commonly held perception that transporting tailings as a slurry to a facility is the most economic approach. However, to a large extent this tailings dewatering, density and …

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Geosciences | Free Full-Text | Recycling and Reuse of Mine Tailings…

Mining is an important industry, accounting for 6.9% of global GDP. However, global development promotes accelerated demand, resulting in the accumulation of hazardous waste in land, sea, and air environments. It reached 7 billion tonnes of mine tailings generated yearly worldwide, and 19 billion solid tailings will be accumulated by …

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Identification of priority pollutants and key factors affecting

Priority pollutants in leach liquor of tailings, soil, and groundwater of sites were identified using the osculating value method. The key factors affecting environmental risks of lead‑zinc mine tailing sites were identified using the random forest algorithm. Four types of hydrological settings were classified.

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Copper mine tailings valorization using microbial induced calcium

This work therefore aims to investigate the valorization of copper mine tailings using MICP, while examining the key factors that influence the process. This work could provide the first means to potentially use MICP to create useful bio-solids from copper mine tailings. 2. Material and methods2.1. Characterization of copper mine tailings

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Underestimated environmental benefits of tailings resource …

Value; Path 2: Tailings + Flocculant for mine filling: Tailings: t: 1: Granulated blast furnace slag: kg: 70: Plaster: kg: 10: Cement: kg: 20: ... Mine tailings with high sulfur content are subject to many restrictions in preparing building materials, so most of them are used for filling pits. ... According to the coefficient method, the carbon ...

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Review Utilization of tailings in concrete products: A review

However, the SiO 2 content value of these tailings (=31 %) is quite low compared to the average SiO 2 content values of other tailings (greater than50 %). The sum of SiO 2, Al 2 O 3, and Fe 2 O 3 content is a very important parameter in terms of the mechanical properties of concrete so that tailings can be used as binders in concrete …

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Mine Tailings Disposal Methods

Mill Tailings. Ore or mineral milling or concentration can be performed by a number of methods, such as gravity concentration, magnetic separation, electrostatic separation, flotation, and leaching. The object, in each case, is to separate the metal from the less valuable matrix rock, or gangue.

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Evaluation on leachability of heavy metals from tailings: risk …

The leaching concentration of As ranked first among seven HMs, and the corresponding values of 0.223, 0.288, 0.406, and 0.258 mg L −1 in J 1 − J 4 samples (Fig. 1b). Zn ranked second with the corresponding values of 0.075–0.127 mg L −1, while the leachability of Cd ranked third with the average value of 0.0611 mg L −1.However, the …

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Estimating processing cost for the recovery of valuable …

One of the important factors that could contribute to its spreading would be developing a simple method of preliminary assessment of the profitability of mine …