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Reprocessing mine tailings may also have environmental benefits. A recent project described in Mining is a series of experiments carried out by an international group of scientists to produce approximately 30 years of passive carbonation of mine tailings within four weeks.
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Ore extraction, crushing, milling, metallurgical processing, and tailings management operations normally take place around underground or open-pit mines. For example, the Potrerillos Copper Mine disposed of mine tailings near its processing plant when it began operations (1920–1938).
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The re-processing of mine tailings to obtain critical raw materials (CRMs) could reduce the mining of new deposits as well as ensure the profitable use of the waste materials. Though, it requires ...
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Biological nitrogen fixation (BNF) has important ecological significance in mine tailing by contributing to the initial accumulation of nitrogen. In addition to chemolithotrophic and heterotrophic BNF, light may also fuel BNF in oligotrophic mine tailings. However, knowledge regarding the occurrence and ecological significance of …
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The re-processing of mine tailings to obtain critical raw materials (CRMs) could reduce the mining of new deposits as well as ensure the profitable use of the …
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Jowett, who has been working in mine tailings research in the US and Australia for more than a decade, is leading a programme at the university to catalogue and characterise around 20,000 mine sites in the state that are at least 30 years old. ... The company plans to use the re-mining and processing of waste from legacy mine sites …
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Current research at the Colorado School of Mines (Nelson et al., 2020) is focused on determining the chemical and mineralogical characteristics of mine and …
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In cases of long-term exposure, mining tailings pose risks to the environment and human health, and therefore, there is a need to develop new approaches for using tools such as risk assessment to predict accidents in dam failures. ... The all-component clean resource utilization process of gold tailings includes the following …
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Placing Soil Covers on Soft Mine Tailings. David John Williams, in Ground Improvement Case Histories, 2015. Abstract. Mine tailings are typically silt-sized materials derived from mineral processing, which are conventionally pumped as an aqueous slurry, thickened tailings, or a tailings paste to a surface tailings storage facility (TSF). After discharge, …
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A report on the challenges and opportunities of tailings management in the mining industry, with a focus on technology and innovation. It examines the conventional …
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Even though there are national mining waste registries, the information is often at a too generic level (e.g. not containing information on concentrations and impurities) in order to evaluate the remining potential, or the information may be available only in a specific language (Žibret et al., 2020).Table 1 shows as a major example the summary …
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FUTURESMART MINING™ – changing the future of tailings ... significantly decrease the volume of waste material produced in the extraction and processing of mineral ore, while also offering major water and energy usage reductions for each tonne of metal or mineral produced, as well as smaller overall mine waste footprints. ...
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Proposed recycling flowsheet of hydrometallurgical methods for REEs recovery from mine tailings in Kiruna, Sweden. The process steps highlighted by the dashed box are the focus of this study [30]. Recovery of Li from mine tailings is a relatively new concept. The increasing demand for Li in diverse high-tech applications is now …
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2. MINE TAILINGS AND TAILINGS FACILITIES: AN OVERVIEW 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, and water and chemical reagents that remain after processing. The composition of mine tailings varies
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The generated tailings in the mining sector are mostly disposed through conventional tailings management systems (e.g., storing in tailings dams). ... After this process, the tailings are brought into a homogeneous state and mixed with water and activator (e.g., sodium silicate) to form brick sludge. Subsequently, the brick reaches its …
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Sustainable management of mine waste requires an experienced and multidisciplinary team of trained engineers to design, construct, operate and monitor Tailings Storage Facilities (TSF) from conceptualization through closure. Historically, tailings engineers have received on-the-job training in mine waste management. There is a critical need to build …
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Many toxic and harmful substances from mine tailings produced in the process of metal mining and smelting migrate and diffuse to the surrounding environment through various channels during the long open storage process. After long-term rainwater leaching and soaking, residual heavy metal elements are repeatedly soaked by …
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Mineral tailings from two copper mines were bioleached under different conditions. • Greatest copper extraction was achieved at extremely low pH, at 45 °C and under oxidative/reductive conditions.. Copper present in tailings PLS was selectively precipitated as CuS by biogenic H 2 S.. Microbial communities were dominated by Sb. …
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Communities and authorities have been dismayed by globally recorded tailings storage facility (TSF) failures in recent years, which have negatively affected the safety of people and the integrity of the environment. In this context, obtaining the social and environmental license to operate TSFs has become a challenging process for …
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Adding to this, the legacy of environmental damage from abandoned mines is worrying; in Canada there are around 10,000 abandoned mines, 50,000 in Australia, 6,000 in South Africa, and 9,500 …
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The importance of geochemical and mineralogical characterization of fresh Cu-Porphyry mine tailings in mineral processing plants to optimize their revalorization potential. J. Geochem. Explor. …
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Mine tailings have increased significantly over the last century as a result of increased demand for metals and minerals, as well as the adoption of better mining and processing processes to utilize low-grade minerals and extract more value from them. A recent report published by the Chinese Academy of Land and Resources Economics …
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Extraction of valuable metals from tailings dumps (or residues or low grade stockpiles) traditionally regarded as waste, has long been researched by metallurgists. A number of developments in mineral processing technology have combined to make the retreatment of numerous tailings dumps a profitable
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By reprocessing tailings, dewatering them and then storing them in a dry stack, mines can remove some of the economic, environmental and societal risks …
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CHAnGes in version 3.1 Version 3.1 is an update to the third edition of A Guide to the Management of Tailings Facilities (the Tailings Guide), released in November 2017, to reflect the second edition of MAC's Developing an Operation, Maintenance, and Surveillance Manual for Tailings and Water Management Facilities (the OMS Guide), …
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To evaluate the SULTAN near-zero-waste-processing scheme, three case studies have been analyzed, being (1) the historical Zn-Pb mining and metallurgical processing area in Plombières, Belgium; (2) the active Cu-Zn Neves Corvo mine in Portugal; and (3) the historical Cu-Zn-Pb tailings in the Freiberg district, Germany.
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Copper processing is a complicated process that begins with mining of the ore (less than 1% copper) and ends with sheets of 99.99% pure copper called cathodes, which will ultimately be made into products for everyday use.The most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and …
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A lot of operational and closed tailings facilities have residual mineral values that might not have been of interest in earlier times. With advent of novel technologies, mining companies are now figuring out ways to extract valuable metals from tailings. In gold, copper sulfide and iron ore …
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The rest of the rock is known as tailings. It comes out of the concentrator as a wet slurry and is typically stored near to the mine, in most cases within a tailings pond. The tailings pond at the Volcanogenic Massive Sulphide copper-zinc-silver-gold Myra Falls Mine on Vancouver Island is shown on Figure 8.2.3.
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Reprocess tailings. Really? Yes, really. If the technology exists today to remove up to 90% of water from mine tailings and, if a mining company is going to make that investment anyway to secure its future operations, then frankly, it is irresponsible not to consider reprocessing the tailings that currently sit in its TSFs.
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