Kiventera et al. (2018) studied the possibility of fixing several heavy metals in gold mine tailings using reactive polymerization technology and experimentally demonstrated the chemical stability of geopolymers synthesized from alkali-activated metakaolin and blast furnace slag by adding 40–50 wt% gold mine tailings.
Tailings ponds are one of the three major production facilities in metal mines. The volume of tailings increases year by year, but the storage capacity of existing tailings ponds is limited. Therefore, tailings dams must become more fine-grained and larger. The potential hazard they represent should not be underestimated. This paper …
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 to growing mining volumes, global tailings generation was estimated to total ~3.2 bn tons for copper and ~1.8 bn tons for iron in 2018.
Although tailing storage in ponds constructed by closing a valley or watershed from a river using a dam or an embankment may be considered as the most widely used method in the world for tailings disposal (Real & Franco, 1990), other established methods such as underwater storage of tailings in a deep lake or ocean, …
Rethinking the mine-waste system. The Waste to Value Challenge is about exploring new approaches to managing waste across the mining process to create better value from 'waste' and reduce the footprint of mining operations.. This includes processes and practices to minimise the production of waste and strategies to think differently …
The physical-chemical strategies of conventional technologies, such as constructed barriers were implemented to prevent the further spreading of tailings, but are limited by their high costs (approximately 100–500 $/ton) (Cristaldi et al., 2017).Phytoremediation are also limited because the acidification conditions of tailings …
Types of values and valuation methods for environmental resources: Highlights of key aspects, concepts and approaches in the economic valuation of forest …
One such example is the failure of the retaining dam of a tailings impoundment at the Aznalcóllar-Los Frailes mine (in south-west Spain) which resulted in the release of vast amounts of acidic waters and tailings slurries into the catchment of a local major river nearby the Doñana National Park in April 1998 (Grimalt et al., 1999, …
1. INTRODUCTION. rms of both industry and societal expectations. A rethink is also required about the way in which many view tailings management in terms of …
Mineral waste can be defined as a material leftover from exploration, mining and quarrying operation that cannot find a productive use. It is the high-volume material that originates from the excavation and physical and chemical processing of a wide range of metalliferous and non-metalliferous minerals by opencast and deep shaft methods …
The paste tailings disposal method produces a high viscosity, non-Newtonian fluid, characterised by paste copper tailings of 65-80% solid weight concentrations (Cw) and a water recovery rate of ...
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.
Approximately 390,000 abandoned mines across the US pose considerable, pervasive risks to human and environmental health; world-wide the problem is even greater. Lime, organic materials, and other amendments have been used to decrease metal bioavailability (e.g., Cd, Cu, Mn, Ni, Zn) in contaminated mine wastes and to promote …
Mine tailings (MTs) are pulverized ... There is growing recognition that MTs represent an underutilized secondary resource that could deliver substantial value through reprocessing and comprehensive utilization [9]. ... These dangers and repercussions emphasize the need for new methods of managing tailings [18]. Download: Download …
Acid production decreases the pH value of the tailings soil and increases the solubility of heavy metals. The low pH and high heavy metal contents in the tailings soil can cause plant growth disorders, the so-called biotoxicity. ... and it is also the most promising method for restoring mine tailings. Phytoremediation can be applied to large ...
These disposal methods help mining companies to clean up existing mine tailings and convert them into value. However, any reuse or recycling of mine tailings requires a reliable assessment of the contaminants that they might release; thus, a detailed understanding of the mineralogical, geochemical, and bulk physical properties of mine …
Reuse and recycling of mine tailings in whatever form is key to tailings minimization, which in turn is an important foundation to a global sustainable mining industry. ... Incentivize innovative methods and technologies for resource recovery and reuse. ... while simultaneously giving value to mine waste products. These precipitates …
Deposition Methods of Tailings. Figure 1: Single point discharge of tailings (Subaerial technique) (© Jon Engels) Introduction. ... The Lisheen mine in Ireland is one such site that uses this technique to control AMD. Part of their license to operate requires them to deposit all their tailings subaqueously with a minimum water depth of 1.3 m ...
open access. Highlights. •. Dimensional analysis is used to estimate mine tailings processing cost. •. Copper and vanadium are considered to be recovered from …
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 material. ... Net present value approach: method for economic assessment of innovation projects. Procedia - Soc. Behav. Sci., 156 (2014), pp. 506-512, 10.1016/j.sbspro.2014.11.230. …
In analyzing the perspectives of various domestic and international studies, this literature review will determine the feasibility of reprocessing and reutilizing mine …
2.1 Study area description and sample collection. The copper-nickel mine tailings pond was built in 1999 and is located in northern Xinjiang Province and in the eastern part of Fuyun County ().The design level of the pond capacity is grade Ⅴ and the floor area is about 1.5 × 10 5 m 2.The slag waste is disposed of by the traditional wet …
Indexes of academic publications in areas of knowledge related to tailings in mining in the world between 1990 -2022. Data source: Scopus. …
In addition to reprocessing mine tailings for economic value, there are environmental and humanitarian benets associ-ated with treating the tailings, removing various sulfur-bear - ... near tailings waste [11]. One method of reducing the con-centration of heavy metals that is being examined is phyto-extraction, which involves using certain ...
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
The tailings dam of the Cadia gold mine (see Fig. 1) had the highest footprint in term of the LUC value among the other gold mine tailings dams. This dam failed in 2018 and released a substantial amount (i.e., ~1.3 Mm 3 ) …
Tailings are Mine Waste. Tailings are the waste materials left after the target mineral is extracted from ore. ... where new levels of the raises of the dam are built on top of previously-deposited tailings. This method is particularly dangerous because the underlying tailings can liquify and collapse, giving way for the whole structure to ...
Life cycle cost estimation and environmental valuation of coal mine tailings management. October 2017; DOI:10.1016/j.jsm ... C. S. (2012). Types of values and valuation methods for environmental. ...
The real options valuation method aims to protect and increase the economic return from a project (Savolainen, 2016) and is applied predominantly in investment project valuation ... (2019) technology development is still much needed to add value to mine tailings. Therefore, a multidisciplinary approach is imperative to develop …
Mine tailings pose a high potential risk in mining operations. Statistical data shows that, on average, there were two mine tailings incidents recorded each year between 2000 and 2009. Recorded mine tailings incidents have resulted from poor water management, failure of the tailings disposal method applied, dam failure, and natural …