Geoenvironmental Study of Gold Mining Tailings in a …
We characterized the tailings from the Santa Barbara tailings dam, which is located in Minas Gerais, southeastern Brazil, to: (i) identify its chemical, mineralogical, and …
The Development of Innovated Complex Process for Treatment …
4.1. Old Flotation Tailings Sample. A sample of old pyrite flotation tailings obtained at an industrial concentrator was used. The main elements contents and mineral composition of the old pyrite flotation tailings are presented in Table 14 and Table 15 and Figure 4. The sample was milled using an LDI-65 disc eraser (Techoborudovanie, Saint ...
Mineralogy and geochemistry of tailings from a gold mine …
For more than 30 years, sulfide gold ores were treated in metallurgic plants located in Nova Lima, Minas Gerais, Brazil, and accumulated in the Cocoruto tailings dam. Both flotation and leaching tailings from a deactivated circuit, as well as roasted and leaching tailings from an ongoing plant, were studied for their acid mine drainage ...
Tailings, waste and mine closure | Gold Fields Report Suite …
Process plant tailings deposited in tailings storage facilities (TSFs) represent a significant waste stream produced by mines. ... Brazil, in January 2019, which resulted in the deaths of 270 people. ... Gold Fields' Group Tailings Management Guidelines were aligned to the Position Statement in 2017 and strengthened with the inclusion of ...
Baseline Investigations and Preliminary Design for an In …
used to place the ore on the leach pad. Sufficient gold remains in the HLM to profitably reprocess the ore through a new 5,000 tonnes/day processing plant, which would include grinding, cyanide in leach, carbon sorption and cyanide detoxification. Tailings from the plant would be discharged into the mined-out
Early Developments in Treating Pyritic and Refractory …
the Port Phillip Co. had a process and plant to efficiently extract gold from pyrite at Clunes. The average recovery of gold from the tailings was more than 4 oz per ton,
Recoveries in Gold Metallurgical Treatment Tailings Dams
remain important regions for Au production in Brazil. The gold deposits in these areas are hosted within the Rio das Velhas metallogenic Greenstone Belt, recognized as Brazil's most significant Au district [49,50]. Water12023,115,1x1FOR1PEER1REVIEW1 31of1181 1 1 metal1ions1[12,44,45 ...
Sulphide Gold Ore Treatment by Leaching and Flotation Process
Problem with gold recovery from sulphide ore: How may a mill get the maximum recovery of gold from a sulphide ore, at the least capital cost and at the same time obtain the highest net return.This latter point is most important. In many cases a gold mill using an all-cyanide flowsheet with fine grinding of all the ore will report very low gold content in the …
Use of gold mill tailings in making bricks: A feasibility study
The gold mining process at Kolar gold field (KGF) mines has generated about 32 million tons of tailings. Gold was extracted from the mined ores using cyanidation technique that involved ...
Geochemistry and mineralogy of auriferous tailings deposits …
Since the mid-nineteenth century, gold ores, mainly hosted in sulfides, have been processed at metallurgical plants located in Nova Lima, Brazil. The generated wastes have been accumulated over the years in tailings dams or in piles. These materials represent wasted from old circuits, as well as from plants still in production.
Bacterial leaching as a pre-treatment step for …
The metallurgical operations at Fairview comprise a typical refractory gold processing plant treating the sulfidic ore body, a second plant treating the quartzitic ore, a flotation tailings treatment plant and 179 Bacterial leaching …
Tailings, waste and mine closure | Gold Fields …
The mining industry's TSFs are in the spotlight following the catastrophic tailings failure at Vale's Feijão iron ore mine in Brumadinho, Brazil, in January 2019, which resulted in the deaths of 270 people.
New Celebration Tailings Treatment Plant 18 Months Later
The tailings treatment plant was commissioned in December 1990 and details of the first 18 months' operations are Provided. At New Celebration Gold Mine the advent of treating primary sulphide ores resulted in decreased gold recoveries of four to ten per cent.
Finding New Life for Tailings: Sustainable Technology for …
For an example study case, we assumed a pyrite roaster plant based on CFB technology with a capacity of 2000 t/d pyrite plant with the metal composition of Cu 0.5%, Co 0.5%, Zn 0.2%, Ag 5 g/t, and Au 1 g/t. The earnings are shown in Table 4 below. For a hypothetical operating cost on essential plant units (including leaching), the ROI can range ...
Tailings management in gold plants
The tailings management system of a mining operation is comprised of many components which include: tailings treatment in the mill; slurry thickening; slurry transport; tailings impoundment; water recovery and recycle; tailings and effluent treatment; evaporation and restoration of the site (Ritcey, 1988a, Ritcey, 1989).A simplistic environmental tailings …
(PDF) Adding Value to Mine Waste through Recovery Au, Sb, …
For more than 30 years, sulfide gold ores were treated in metallurgic plants located in Nova Lima, Minas Gerais, Brazil, and accumulated in the Cocoruto tailings dam.
Adding Value to Mine Waste through Recovery Au, Sb, …
Some plants currently incorporate Au tailings reprocessing into their production chains, such as the Elikhulu tailings re-treatment plant (Southern Africa), which processes 1.2 Mt of historic tailings per year from three existing slime dams [23] and Paracatu mine (Brazil) in which 10 million tons of hydrometallurgy tailings containing 1 mg
Pyrite Mining | Processing Equipment | Flow Chart | Cases
Recognized for its brass-yellow color which resembles that of gold, pyrite is a source of iron and sulfur and is used for the production of sulfuric acid. ... water treatment and flocculation, moss killer, and many other chemical processes. ... 100TPH Rock Copper & Cobalt Ore Process Plant In Congo 100TPH Tailings Copper & Zinc Process Plant In ...
Refractory Gold Pressure Oxidation Technology at …
major plants for the treatment of concentrates including: the Camp-bell Mine in Northern Ontario; the Porgera Mine in Papua New Guinea (also commissioned in 1991); and at the Sao Bento mine in Brazil (commissioned in 1986), as well as for the direct treatment of ore at the Lihir gold mine in Papua New Guinea (commissioned in 1997).
Mineralogical and Geochemical Characterization …
Even though the tailings treatment and control processes use alkaline products, the main sources of Au are often associated with sulfides, such as pyrite (FeS 2), arsenopyrite (FeAsS), and pyrrhotite (Fe 1–x S).
Pyrites Plant (Phase I)
The Pyrites plant is expected to improve overall recoveries of gold and silver, and therefore maximise production in the Fresnillo district; expected to total an average of 3.5 moz silver and 13 koz gold per year once both phases are operating at full capacity.
Mineralogical and Geochemical Characterization of Gold …
For more than 30 years, sulfide gold ores were treated in metallurgic plants located in Nova Lima, Minas Gerais, Brazil, and accumulated in the Cocoruto tailings dam. Both flotation and …
Take two: why mine tailings are worth another look
The facility now reprocesses gold tailings from the Golden Sunlight mills. The focus is on removing and concentrating sulphur (iron pyrite) to be sold to, and used in gold …
Tailings management in gold plants
The tailings management system of a mining operation is comprised of many components which include: tailings treatment in the mill; slurry thickening; slurry transport; tailings impoundment; water recovery and recycle; tailings and effluent treatment; evaporation and restoration of the site (Ritcey, 1988a, Ritcey, 1989).
(PDF) Impacts of cyanide in gold mining and cyanide …
In this work, the wastewater from a gold ores processing plant was characterized, finding at present high contents of cyanides and heavy metals (As, Fe, Cd, Co, Cu, Ni).
Tailings management in gold plants
As more gold ore is being mined, more gold tailings are also being produced; For example, China alone has been generating 24.5 million tons of gold tailings annually [5,6]. ...
Tailings Retreatment: The Next Revenue Source for the Mining Industry
In 2014, a tailings dam at the Mount Polley copper and gold mine in British Columbia failed as a result of an unstable foundation, sending 24 million cubic metres of slurry into the surrounding waterways. A year later, the Samarco mine's tailings dam failed as a result of seismic activity combined with structural defects and other issues.
Geochemistry and mineralogy of auriferous tailings deposits …
For more than 30 years, sulfide gold ores were treated in metallurgic plants located in Nova Lima, Minas Gerais, Brazil, and accumulated in the Cocoruto tailings dam. …
Mineralogical and Geochemical Characterization of Gold Mining Tailings
Even though the tailings treatment and control processes use alkaline products [4], the main sources of Au are often associated with sulfides, such as pyrite (FeS2 ), arsenopyrite (FeAsS), and pyrrhotite (Fe1–x S). ... one of the most gold-producing regions in Brazil [36,37]. The gold world-class deposits are part of the Rio das Velhas ...
Arsenic bioaccessibility in gold mine tailings of Delita, Cuba
The Delita gold mine region (Fig. 1), which is located in a watershed covering 72 km 2, has long been a matter of health concern due to possible surface and groundwater contamination with arsenic and heavy metals occurring in mine tailings and sediments [13].In this area, a previous risk assessment study identified arsenic as the main critical contaminant [14], …