Pyrite Flotation Separation and Encapsulation: A …
Pyrite flotation separation and encapsulation in tailings dams is proposed as a viable way to chemically stabilize tailings. Characterization of potential acid mine generation in tailings led to an innovative process in which acid-generating pyrite is separated by flotation from the coarse tailings and incorporated into the slime zone.
Improvements in gold ore cyanidation by pre-oxidation with …
This treatment leads to a reduction in the consumption of dissolved oxygen and of cyanide in the cyanidation step and to an improvement in the metallurgical recovery. In the current work we present the results of a five month full-scale trial carried out in a gold extraction plant in Brazil, which normally operated with three tanks in series ...
The gold mining industry in Brazil: A historical overview
This article presents the different phases of artisanal ( garimpo) and industrial gold mining in Brazil by reviewing the country's geo-historical and production data, …
Pyrite Flotation Separation and Encapsulation: A …
Flotation separation of the pyrite from these tailings will make it possible to produce a neutral tailings that could be used as a cover material for the tailings dam, …
Tailings management in gold plants
Download Citation | Tailings management in gold plants | General aspects of tailings management that would be applicable to any mining operation are reviewed with specific emphasis on gold ...
SEM images of the gold locked in the pyrite particles of the …
The objective of this study was to identify microorganisms involved in sulfide oxidation in the tailings of a Bahia Gold Belt mine (Brazil). Samples of soli...
Recovery of gold from sulfide refractory gold ore: Oxidation …
Sulfide refractory gold ore and pyrite used in each experiment were provided by a gold producing company in Hunan Province of China. ... the main method for recovery of gold form gold tailings is treatment of gold tailing with lead smelting and enriching gold in the form of precious lead. ... Ultra fine grinding of silver plant tailings of ...
Tailings Pond and Mine Pit Water Treatment
Tailings Pond & Mine Pit Water Treatment Solutions for treating industrial mining wastewater and meeting environmental discharge regulations Wastewater in the mining industry frequently requires treatment for sulfate, nitrate or heavy metals to meet regulatory requirements for discharge to the environment.
Failure Management in a Gold Mill Tailings Treatment Process
The gold mill tailing treatment process is the process that fulfills the function of pumping the waste from the leached pulp treatment process towards the plant's residues deposit . It pushes gold mill tailings thickener waste, which is the last stage of the counter-current decantation circuit used to recover mineral ore, toward a tailings ...
Re-Processing Gold Tailings in South Africa
The tailings from the re-processing plant will be re- deposited in a new area far from urbanization, allowing for the rehabilitation of the real estate currently occupied by these historic tailings.
(PDF) Evaluation of pre-treatment methods for gold …
The gold in Carlin-Type gold ore grains is distributed finely, existing as invisible or submicroscopic gold, encapsulated in arsenopyrite and pyrite. The technical difficulty of treatment Carlin ...
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,
Tailings microbial community profile and …
The slimes resulting from water treatment, as well as the finer fraction of the processing plant are stored together in tailings basins. The mineral processing at the mine changed through the years.
Efficient tailings treatment
Whether your mining operation involves the treatment of coal, sand and aggregate, iron ore, gold ore, or copper tailings, we have the in-depth process knowledge and a range …
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).
Bioremediation techniques for the treatment of mine tailings…
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 …
Tailings management in gold plants | Semantic Scholar
Semantic Scholar extracted view of "Tailings management in gold plants" by G. M. Ritcey ... The treatment of flotation tailings is today a subject of interest in mineral processing because of the ... Effects of iron-oxidizing bacteria and vegetation on acid generation in laboratory lysimeter tests on pyrite-containing uranium tailings. M ...
Mine tailing disposal sites: contamination problems
The most critical step in phytocapping is the developing of the first vegetative cover because of the biotoxicity of the mine soil and mine tailings. Several amendment materials can be used to ameliorate soil conditions creating a favorable environment for the rooting of plants, as well as serving as a source of nutrients.
Mineralogical and Geochemical Characterization of Gold …
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 (FeS 2 ), arsenopyrite (FeAsS), and pyrrhotite (Fe 1–x S).
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, …
1 The BIOX™ Process for the Treatment of Refractory …
BIOX™ plants to treat refractory gold ore concentrates. Both the Suzdal ... The oxidation of pyrite produces acid, while the oxidation of arsenopyrite ... The BIOX™ Process for the Treatment of Refractory Gold Concentrates 5 Table 1.2. A summary of the commercial BIOX operations, currently and previously in opera- ...
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 …
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 …
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...
Mineralogical and geochemical characterization of the …
The goal of this research is to provide a preliminary chemical and mineralogical characterization of the disposed tailings of the Pb–Zn Boquira Mine that …
Mineralogical and Geochemical Characterization of Gold …
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 (FeS 2 ), arsenopyrite (FeAsS), and ...
Socio-Environmental Risks Linked with Mine Tailings …
A metallurgical process plant for the treatment of gold ore and production of gold mine tailings in terms of cyanide treatment must be designed taking into account the requirements of the International Cyanide Management Code, which contemplates the highest world standard in the management of this substance.
Extraction of Gold from Sands and Slimes Tailings Dump …
The gold associated with minerals susceptible to a mild oxidative pre-leach such as calcite, dolomite, pyrrhotite and haematite was 2.1% and gold associated with sulphide minerals that require severe oxidative pre-treatment (i.e. pyrite, arsenopyrite etc.) was quantified to be 0.7% of the total gold.
Limits of the CIL circuit in copper–gold plants
The copper flotation tailings are floated sequentially to produce a gold-bearing pyrite concentrate which is further treated on-site by a CIL process for the recovery of contained gold. Pyrite flotation tailings are discarded to the tailings storage facility without further processing. Copper is simultaneously leached in the CIL process.
Characterization and treatment of artisanal gold mine tailings
Gold is industrially mined in the Jacobina basin from gold-pyrite-bearing conglomerates and artisanaly mined from both quartz veins and gold-pyrite-bearing conglomerates [6]. ... shortage often hinders the bioremediation of mining-generated tailings. For pioneer plants living in mine tailings, biological N fixation (BNF) is an …