engineering design of tailings dams in other mining industry sectors, for both stability and environmental performance. For instance, experience gained with leach pad liners is being transferred to linings for tailings ponds, and the use of synthetic lining materials is growing (although use of liners is still far from being the industry norm).
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— Health & Safety: The mine site and associated tailings dam are located in an area that is one of the most active earthquake zones in the world. The site is approximately 14 kilometres from the Great Sumatran Fault. ... Pollution: Lead-zinc mines are among the most high-risk types of mine in terms of pollution, as the mining process produces ...
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— In the present study, the lead-zinc mine tailings were prepared from Iranian mines. The first type of mine tailings (T 1) with very low sulfide content (0.4%) was prepared from Tiran lead-zinc mine located in Isfahan province.The second type of mine tailings (T 2) with high sulfide content (19.9%) was prepared from Kooshk lead-zinc mine located in …
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— The total annual amount of lead–zinc tailings (LZTs) in China is projected to reach 500 million tons by 2020 [1]; however, the country's comprehensive usage rate is only ∼10% [2].Stacking many LZT wastes land resources and causes heavy metal pollution in the soil and water bodies around the mining area [1], [3].Tailing cementation backfilling …
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— KOMPAS - A few hundred meters from the village of Sopokomil in northern Sumatra, Indonesia, work is set to begin on a tailings dam for a zinc mine that experts say is a recipe for disaster. The site rests on unstable volcanic ash. The region is wet and regularly hit by earthquakes. And the dam has not been designed to withstand …
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— Serious heavy metals pollution was characterized in the lead/zinc mine tailings dam and surrounding soils, as well as copper slag disposal sites. This study investigates the efficacy of modified granulated copper slag (MGCS) as a partial replacement of ordinary Portland cement (OPC) for lead/zinc mi …
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— 1. Introduction. The lead-zinc mineral resources are indispensable in industrial development and economic growth [1, 2], which has been widely used in the electrical, metallurgical, and pharmaceutical industries [3].However, the environmental impacts of these resources' excavation and subsequent beneficiation have been ignored …
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— In addition, an in situ stabilization experiment was performed by adding a stabilizer to a lead-zinc mine tailing pond with high-pressure rotary jet technology. The …
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— For example, catastrophic failure of the Buffalo Mine tailings dam in West ia, USA, resulted in the death of 125 people and more than 4000 people losing their homes in 1972 (Orendorff 2009). 3) ... Lead-zinc mine tailings have high contents of Pb and Zn while Cd and Ni contents are generally low. Copper tailings have a high concentration ...
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— Of the tailings dam incidents of lead ore mines, 65% (n = 11) cases corresponded to the upstream raise dam design. The downstream dam design was the second most common type, which was noticeable for copper, gold, silver, coal, and phosphorous ore mines. Although the centerline raise dam type was considered safer …
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The next section of this report provides an overview of the various methods used to dispose of mine tailings and the types of impoundments that are used. Section 3 describes the …
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— Lead–zinc tailings are the typical solid wastes in mines with high yield and low utilization rates in some countries at present. They are mainly stockpiled in tailings reservoirs, occupying massive land …
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— Study site. The investigated tailings impoundments (Fig. 1) are positioned in the typical lead-zinc mining area of South China, whose geographical coordinates are situated between 113° 39′ 47″–113° 40′ 1″ …
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— Dairi Prima Mineral is planning to build an underground mine to extract zinc, lead and silver ore that will create millions of cubic meters of toxic tailings in one of the world's highest earthquake risk zones in Sumatra. ... the remaining millions of cubic meters of toxic waste would be stored in a tailings dam that the company says will be ...
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— To analyze the pollution level and ecological risk of heavy metals in an abandoned lead–zinc mine tailings dam, this study first employed X-ray fluorescence analysis to determine the vertical …
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— Besser et al. studied the toxicity of sediments downstream of lead–zinc mining areas in southeast Missouri, using pore-water toxicity tests with the daphnid, ... Mining tailings pose a high potential risk due to poor water management, failure of the tailings disposal method applied, dam failure and natural disasters.
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and ecological risk of heavy metals in an abandoned lead–zinc mine tailings dam, this study first employed X-ray fluorescence analysis to determine the vertical distribution patterns of heavy met-
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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 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 minerals …
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— To set the scene, we first describe the characteristics of tailings and of construction of tailings dams, and the common causes of their failure. We conclude with …
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— KOMPAS - A few hundred meters from the village of Sopokomil in northern Sumatra, Indonesia, work is set to begin on a tailings dam for a zinc mine that experts say is a recipe for disaster. The site …
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Boquira mine tailings' sampling The former lead–zinc otation plant from the Boqueira mine was fed with ore from a deposit without large heterogeneity. The tailing dam of this former plant was sampled at several points (samples of about 2–5 kg), and the resulting samples were homogenized and a composite sample was used in the
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— Based on research carried out at 67 tailings dams in Spain: (1) tailings dams contain alternating sedimentary layers with contractive and dilative geomechanical behaviours; (2) tailings saturate quickly but drain more than 10 times slower due to the high-suction capacity of the porous sediments (2–300 MPa); and (3) over the long-term, a …
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— On April 25, 1998, the tailings dam failure at the Los Frailes lead-zinc mine at Aznalcóllar near Seville, Spain, released several million cubic meters of toxic tailings slurries and liquid into the nearby Río Agrio, a tributary to Río Guadiamar, which covered several thousand hectares of farmland, and threatened the Doñana National Park.
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Los Frailes, Aznalcollar, Spain. Figure A: The almost sealed embankment that failed at Los Frailes. Introduction. Minas de Aznalcóllar is located near the town of Aznalcóllar in southwestern Spain and approximately 40 km west of the large city of Sevilla ().It is within the Iberian Pyrite Belt which has a well known mining district for at least a few millennia.
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— Tailings dams, designed to retain the waste by-products of mining, are among some of the largest engineered structures in the world 5; there are an estimated 8100 tailings facilities worldwide 4.
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The tailings are also very diverse in mineral phases even in the lead-zinc tailings. Figure 2 presents the XRD pattern of lead-zinc tailings coming from different resources. Previous research [] reveals that the mineral phases of the lead-zinc tailings include calcite, dolomite, quartz, kaolinite, galena, pyrite and gypsum, whereas other research [] exhibits that …
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— 1.1. What Are Mine Tailings? An Initial Scope in an Uncertainty and Complex World. The initial step in mineral processing involves crushing and grinding ore to produce a suitable particle size for further metallurgical processing using physical and chemical separation methods [].Physical separation processes take advantage of the …
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— Sustainable development principle in mine disposal waste by minimising inputs such as water and energy (Franks et al., 2011) is also covered by those pillars above particularly in environmental and economic pillars.In a condition where the final tailings product has been treated such as by dosing with lime to raise the pH, the sustainability …
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— When the ionic HMs leached from lead-zinc mine tailings and entered into soil environment, they can bind to soil minerals, organic matter, and carbonate via the pathways of surface complexation, physico-chemical adsorption, and common precipitation ( Hu …
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— Tailings are mixtures of crushed rock and processing fluids from mills, washeries or concentrators that remain after the extraction of economic metals, minerals, mineral fuels or coal from the mine resource (e.g., Fig. 1 a; Hudson-Edwards et al., 2001, Younger and Wolkersdorfer, 2004, Lottermoser, 2007).The word 'tailings' is generic as it …
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— There are various processes in management of mine tailings such as minimizing tailings production and increasing tailings reuse, adoption of a risk-based …
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— "If you're frozen 10 months a year like in the Arctic, direct air capture systems are harder to operate," Dipple says. (In addition to strong climate controls, CarbMin Lab's work so far has also shown that water is necessary to drive the reaction – but too much water can inhibit it.)I n 2019, a pilot test was completed at Gahcho Kué using 250 kg of …
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tailings dam failure of the Los Frailes lead-zinc mine at Aznalcóllar near Seville, Spain, released 4-5 million cubic meters of toxic tailings slurries and liquid into nearby Río …
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The residues from the extraction of lead/zinc (Pb/Zn) ores of most Pb/Zn mines are permanently stored in tailings ponds, which require revegetation to reduce their environmental impact. This can only be done if the main constraints on plant establishment are evaluated. This can readily be done by fi …
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