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12-05-2012· 6. Denison Tailings – Reclamation by Flooding Post Closure 7. East Sullivan mine site – Organic Covers 8. Benambra Mine Site - Alkaline Covers 1. Pamour Tailings – Encapsulation. A historic gold tailings impoundment in the Timmins area, Ontario, Canada is sulphide bearing with moderate to high carbonate contents.
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Now imagine that pit filled with up to 10 billion tons of tailings — waste that's derived from mining — that will remain there forever. It's a reality that isn't exactly far-fetched.
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CHAPTER 8 ACTIVATION OF PYRITE BY Pb2+ and Cu2+ 116 Figure 8.2 Copper (II) speciation at different pH values. Diagram drawn using STABCAL Software for 2 x 10-4M [Cu2+], NBS Database Reference has been made to the formation of ferrocyanide at Eh-pH conditions typical of most pyrite
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Tailings, also called mine dumps, culm dumps, slimes, tails, refuse, leach residue or slickens, are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an ore.Tailings are distinct from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed.
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27-06-2008· The tailing dump consists of waste from Zn and Cu sulfidic ore processing, covers an area of 0.1 km 2, and is 6 to 7 m high. In the unoxidized tailings, the content of sulfide minerals ranges from 10 to 30% and is completely dominated by pyrite, while in the oxidized tailings the sulfide content is generally around 1 to 2%.
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The invention discloses a method for reclaiming gold and silver by ultrasonic treatment and flotation of gold and silver containing tailings. According to the method for flotation after the gold and silver containing tailings are treated by adopting a high sound intensity ultrasonic processor for mine, due to the action of power ultrasonic, the oxide film on the surface of the gold and silver
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Now imagine that pit filled with up to 10 billion tons of tailings — waste that's derived from mining — that will remain there forever. It's a reality that isn't exactly far-fetched.
Get Price
Tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an ore.Tailings are distinct from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed.. The extraction of minerals from ore can be done two ways: placer mining, which uses water
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Major types of gold occurrences in the Witwatersrand reefs. 2-5 Ratings of crushing plant used commonly in the gold industry. 2-9 Summary of some significant tailings dam incidents since 1917. 2-42 . Specific gravity of gold tailings. 2-65 In-situ densities and void ratios for gold tailings. 2-67 Permeability values for gold tailings. 2-69
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Mine tailings in African countries Zambia and Namibia have been investigated with an objective to determine the role of secondary hematite in immobilization of contaminants. Two sites, Chambishi and Mindolo, are located in the Copperbelt in Zambia with relatively humid climates and two sites, Berg Aukas and Kombat, are in Namibia, where the climate is semiarid.
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17-11-2009· 1. Introduction. Mining operations generally produce many types of mine wastes, including mine tailings, waste rock and slag. Mine tailings out of those, in particular, act as a main source of environmental contamination [].Arsenic (As) and heavy metals may be released from the mine wastes to the ground and surface water systems, as well as the geological environment due to their solubility
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Storage of arsenic-rich gold mine tailings as future resources Dave Craw, Gemma Kerr, Kirstine Malloch, Christine McLachlan Geology Department, University of Otago, Dunedin 9010, New Zealand Abstract Arsenic-bearing gold mine tailings in New Zealand have been stored at mine sites for up
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• of 43 500 tons of gold in one century and 73 000 tons of uranium between 1953 and 1995. • The basin covers an area of 1600 km2, and led to a legacy of some 400 km2 of mine tailings dams (270 tailings dams and 380 MRDs) containing • 6 billion tons of pyrite tailings and 430 000 tons (600 000 t)
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26-07-1995· The pyrite rougher flotation tailings in this example were treated differently than as shown in Fig. 1. Instead of floating a bulk sphalerite-arsenopyrite concentrate, the arsenopyrite was depressed during sphalerite flotation using additions of base, cyanide, and xanthate collector and then subsequently activated with copper sulfate and collector and floated.
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The invention discloses a method for reclaiming gold and silver by ultrasonic treatment and flotation of gold and silver containing tailings. According to the method for flotation after the gold and silver containing tailings are treated by adopting a high sound intensity ultrasonic processor for mine, due to the action of power ultrasonic, the oxide film on the surface of the gold and silver
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The tailings at Uchaly Mining and Processing Integrated Works contain pyrite, quartz, chlorite, gypsum, barite and feldspar according to mineralogical studies. Possibility of two-step thermochemical chloro-ammonium processing of dumped sulphide tailings, that consists of gold and silver unlocking and pyrite sintering in air with ammonium chloride at 250-275 °C, have been studied.
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Terminology. Tailings are also called mine dumps, culm dumps, slimes, tails, refuse, leach residue, slickens, or terra-cone (terrikon).. Examples Sulfide minerals. The effluent from the tailings from the mining of sulfidic minerals has been described as "the largest environmental liability of the mining industry". These tailings contain large amounts of pyrite (FeS 2) and Iron(II) sulfide (FeS
Get PriceWhilst geotechnical properties of the OTD restrict the extension of the water cover, pyrite is enriched in cobalt (up to 2.6 wt%) indicating reprocessing of tailings as an alternative management
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gold tailings dams of the Witwatersrand basin with reference to their acid mine drainage potential The measured oxygen showed that the diffusion of oxygen in some Witwatersrand tailings dams is up to a depth of 4 m. Fine tailings are often deposited as slurry in a contain-ing dam and allowed to settle.
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With decreasing ore grades, the tailings of mining operations are becoming of increasing interest as metal-containing secondary raw materials. The objective of the current work was to investigate chloride leaching of gold, copper, cobalt, nickel, and zinc present in the flotation tailings. In the current study, the effect of cupric ion as an oxidant (0–50 g/L) and NaCl (150–250 g/L) on
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