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This article reviews the sources, effects and management of mine tailings, the process effluents generated in mineral processing plants. It also discusses the role …
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The first method mentioned, high density thickened tailings (HDTT), is a process where the water content of tailings is decreased, which is beneficial in three ways: 1) it increases the amount of recoverable water, lowering the costs that come from evaporation and seepage during mining, 2) the lower amounts of liquid reduces …
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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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Mining involves the processing of mined ore to separate valuable minerals, leaving behind huge volumes of waste tailings. Driven by mining volumes, globally generated tailings are estimated to total ~3.2 bn tons for copper and ~1.8 bn tons for iron per annum. Water conservation and the cost of tailings and reclamation are also …
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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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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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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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One processing option is bioleaching of mine tailings, which has been successfully tested in a number of laboratory to pilot studies also for the recovery of Cu and Co (Ahmadi et al., 2015, Marrero et al., 2015, Falagán et al., 2017, Altinkaya et al., 2018, Mäkinen et al., 2020, Zhang et al., 2020, Hao et al., 2021, Shengo, 2021) or even in ...
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The results obtained for a plant processing mine tailings, considering annual production of 4,400 t of vanadium pentoxide, an average ore grade of 0.26%, and a recovery rate of 62%, show that the cost would be 6,218 US$/t of V 2 O 5. In the case of a plant with annual production of 6,000 t of copper, an average ore grade of 0.60%, and a ...
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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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Elsewhere in Tasmania, a similar project is under way to recover gold, and another is proposed to recover tin from mine tailings. Overseas, mine tailings reprocessing projects are planned as far ...
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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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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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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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Mine tailings are waste from the processing of mineral ores. They are a mixture of ground rocks and process effluents generated during processing of the ores, …
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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 …
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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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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 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, 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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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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"mine tailings" is a generic term which refers to a range of matrices such as mixtures of crushed rock, processing fluids from mills, washeries, or concentrated materials that remain after extracting the mine resource (Kossoff et al., 2014).
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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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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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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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A Guide to the Management of Tailings Facilities (the Tailings Guide) is designed to be applied by MAC members and non-MAC members alike, anywhere in the world. The Tailings Guide provides guidance on responsible tailings management, helps companies develop and implement site-specific tailings management systems, and improves …
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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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Mintails, a mine tailings processor, has developed new technology to process 350,000 tons of slimes from its extensive tailings resources. ... I would like to know about detailed process to recover gold from tailings using carbon in leach in some of the projects. Reply. Marlene Gasdia-Cochrane, Editor says. April 22, 2020 at 12:48 pm. …
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The Challenge With Tailings Dams. Tailings from mining operations are usually stored in large tailings dams as a slurry that contains the waste materials from the beneficiation process. ... Primary Water Treatment - recover up to 90% of your process water for recirculation to your ore processing plant; Final Tailings Dewatering - the only waste ...
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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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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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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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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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Tailing, in context to mining, is defined as the waste or non-economic by-product generated during mining activities, processing of minerals, and other materials that contain small amounts of residual valuable minerals, chemicals, water, and heavy metals (Adiansyah et al. 2015).Studies indicated that the process of mineral exploitation …
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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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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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