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Consequently, the PCE coating will weak the reaction between water molecules and copper tailings. Besides, the water would be more easily squeezed out of the flocs, resulting in lower moisture content and sediment volume. Download: Download high-res image (185KB) Download: Download full-size image; Fig. 9.
The copper tailing suspension was prepared at 30 wt% solids concentration. Initially, the polymer solutions of NPAM (0.05 wt%) and PCE (1.00 wt%) were prepared for all the measurements at 25 °C. The copper tailing suspension of 100 mL was stirred vigorously at …
A number of review articles on resource recovery from mine tailings are available in the literature. Notably, a review article by Park et al. [45] discussed about different strategies of recycling of the wastes generated by the mining, mineral processing, and extractive metallurgical industries. They have suggested preventing AMD generation ...
Reducing the amount of water in a milled tailings storage facility (TSF) is the primary way to reduce the risk of a catastrophic failure. In addition, a significant factor influencing the permitting and development of new mines, or the expansion of existing mines, is the limited availability of water in some mineral-rich countries, which has led to recent advances in water …
Abstract An analysis of flowsheets for processing sulfide and oxide copper ores, reagent modes, processing equipment, and flotation indicators in some domestic and foreign processing plants and productions is carried out. Autogenous and semiautogenous mills are commonly used in the primary grinding stage in ore processing plants, which excludes …
Soil remediation with minimum amendments is a good strategy for tailings disposal. Carbonate-rich gold-copper mine tailings occurring alongside the Yangzi River, China, were employed as the objective in this study. They showed the characteristics of fine particles and alkaline pH with high density and low nutrition.
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. thermosulfidooxidans …
The Merriespruit failure in South Africa (1994), the Mt Polley failure in Canada (2014), and the Samarco failure in Brazil (2015) showed the destructive potential of water held on tailings storages. These events would most likely not have taken place if standing water had not existed on the tailings storage structures.
The generation of tailings in the world today is immense, since only ounces or pounds of metals are extracted for each ton of ore processed. In 2022, it was estimated that more than 14 billion metric tons of mining tailings were produced per year in the world. Currently, many environmental problems associated with tailings management in both Chile and Peru are …
Landfilling of copper tailings is modeled using the site-specific end-of-life inventories from the study of Adrianto et al. (2022). Meanwhile, the backfilling operation …
Tailings are a mixture of finely ground rock that is left after retrieval of the precious mineral and water used in processing. ... plants and water have been reported by ... David M. Assessment of potentially toxic cyanide from the gold and copper mine ore tailings of Karnataka, India. Int. J. Sci. Technol. 2015; 3:171–178. [Google Scholar]
Mine tailings (MTs) are the materials dumped on a mining site after mineral extraction, containing scattered traces of residual minerals, dug-up soils, and a disturbed ecosystem. Abandoned and untreated MT can pose threats to the surrounding ecosystem due to the presence of various primary and secondary toxic components, such as organic substances …
A cross-sectional study of water usage in the copper mining industry in 2006 found that conventional flotation-based copper mines' water withdrawals ranged from 0.34 to 2.07 m 3 /t of ore processed, with a weighted mean of 0.96 m 3 /t (Gunson et al., 2010b). Key terms in this paper are defined as follows: •
The dewatering of tailings is one of the serious challenges that the mining and mineral processing industries have encountered internationally. Solid–liquid separation …
The tailings generated in mineral processing plants vary widely in particle sizes, mineral composition, and quantity of process water. In dry methods of separation (without water media), the tailings are mainly coarse and can be transported easily by conveyor belts to tailing stacks/ dumps [2, 3].There may be some dust generation that can be controlled easily using …
The mine tailings are also reported to be reused as fine aggregates in concrete to replace natural sand, e.g. by the use of copper tailings (Thomas et al., 2013) and the use of low-sulphide Pb–Zn tailings (Argane et al., 2016). 5.3.2. Upgrading tailings as secondary raw materials for the ceramic industry
With increasing metal prices and declining ore grades, new mines are getting larger and mine waste disposal and management have become more difficult, particularly from an environmental perspective. While technologies …
1. Introduction. In the 19th century, cyanide leaching was proposed, and then it was widely used in gold processing due to its advantages of maturity, low-cost and high-leaching efficiency (Li et al., 2020).Around the world, about 90% of gold is recovered by this method (Acar, 2016; Tu et al., 2019), thereby resulting in the production of billions of tons of cyanide tailings …
2.1 Regional geology. The Musina mine is situated in the central zone of the Limpopo mobile belt (Supplementary Fig. S1) which extends from Botswana to Mozambique, straddling the Limpopo–Zimbabwe boundary [].The highly deformed Limpopo belt (one of the oldest orogenic belts known) is more than 700 km long and 250 km wide and is situated …
Indeed, the historical tailings cumulated in the dams and fresh tailings generated from mineral processing plants can be evaluated as raw material for sustainable development and circular economy. Hence, the harmful impact of tailings can be eliminated while using them as potential source in different industrial sectors.
Flotation is a common mineral processing method used to upgrade copper sulfide ores; in this method, copper sulfide mineral particles are concentrated in froth, and associated gangue minerals are ...
The "Thickened Tailings Disposal" (TTD) technology produces a high density mine waste that allows for the storage of this material without the need to manage large slurry tailings storage facilities (TSFs) and large dams. TTD has been applied considering site specific conditions of Chile and Peru, such as extreme climatic conditions, seismic risks, water …
This article reviews the evolution of copper tailings management and governance in Chile, current practices, and changes that could be or may need to be made to improve practices in response to local environmental conditions and local tolerance for risk. ... the Potrerillos Copper Mine disposed of mine tailings near its processing plant when it ...
MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW. ... Dewatering Circuits for a Chromite Processing Plant Tailing Slurry. ... of process water from tailings slurry of Miduk copper mine. The EDW ...
Nowadays, many major copper mining projects in desert areas with extremely dry climates, as in northern Chile and the southern coast of Peru, process sulfide ores at high …
There are no processing plants using copper mine tailings as a source of CRMs. Therefore, technologies used for primary sources are assumed to be also applicable to the processing of mine tailings. Based on the content of the mine tailings analyzed, two feasibility studies are conducted; the first for producing rare earth oxides and the second ...
As copper tailings appear in ground form, the grading of copper tailings reported by Gupta and Thomas (2013) and Nitish et al. (2013) has a sizeable silt fraction of 0.06–0.002 mm. Copper tailings are considered to be finer than CS, which usually has a dominant sand fraction. Table 6.5 compares the geotechnical properties of copper tailings to those of CS, which have been …
This article reviews the evolution of copper tailings management and governance in Chile, current practices, and changes that could be or may need to be made to improve practices in response to local environmental conditions and local tolerance for risk. ... the Potrerillos Copper Mine disposed of mine tailings near its processing plant when it ...
Mine tailings, generated from the extraction, processing, and utilization of mineral resources, have resulted in serious acid mine drainage (AMD) pollution. Recently, scholars are paying more attention to two alternative strategies for resource recovery and ecological reclamation of mine tailings that help to improve the current tailing management, …
The plant growth responses. According to plant height (Fig. 1a) and fresh weight (Fig. 1b), the optimum chemical ratio of conditioner and straw as the copper tailings amendments was determined.A single application of conditioner had greater effects on growth indexes of ryegrass than a single application of straw, and the effect of a mixture application of …
