Evaluation of pre-treatment methods for gold recovery from …
The aim was to unlock gold from the complex mineralogy and formulate relationships between the prior treatment of the tailings and the gold extraction behavior. Several potentially viable pre-treatment methods were considered as options, i.e. ultrafine milling as a mechanical technique, sodium hydroxide pre-leach as a chemical technique, and ...
Harmless treatment of cyanide tailings by a bifunctional …
After 7 d, the UCS of the tailings was only 0.05 MPa, when the CT were still in a loose state. After 28 d, the UCS value reached 0.74 MPa, and the compressive strength was greatly improved. After the MICP treatment, the loose tailings were cemented into a whole, and the mechanical strength was significantly improved.
Pyrite Flotation Separation and Encapsulation: A …
The total results make contribution to the resource of pyrite tailings, which are also benefit to the development of novel effective and economic medium for BAFS in the advanced treatment of wastewater.
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Mining-related multi-resistance genes in sulfate-reducing …
Affiliations 1 School of Water Resources and Environment and Research Center of Environmental Science and Engineering, Sino-Hungarian Joint Laboratory of Environmental Science and Health, Beijing Key Laboratory of Water Resources & Environmental Engineering, China University of Geosciences (Beijing), 29 Xueyuan Road, Haidian District, Beijing, 100083, China. …
Treatment of Old Pyrite Flotation Tailings for Recovery …
A sample of old pyrite flotation tailings from the concentrator contained 11.4% sulfidic iron, 14.5% sulfidic sulfur, 0.26% copper, 0.22% zinc, and 0.67 g/t gold. Pyrite was the main sulfide mineral (31%). The gold recovery from the unoxidized flotation tailings was 50%. Recently, it …
Mine Tailings: Management, Treatment & Environmental …
Mine Tailings Water Treatment. The composition of tailing water can vary significantly depending on the ore being mined and the processing methods used. Here's a breakdown of some key contaminants and their potential environmental threats: Suspended Solids: These fine particles (think silt or clay) range in size from 1 micrometer (µm) to 1 ...
Revolutionizing Tailings Management: …
One of the most significant challenges that the mining industry is facing today is dealing with residual minerals, the so-called mining tailings. Simply put, tailings are all the minerals discarded in the beneficiation …
Current state of fine mineral tailings treatment: A critical …
Despite being widely used in tailings treatment, polyacrylamide continues to face performance challenges. In this study, two commercial polyacrylamides with different molecular weights were used ...
Process effluents and mine tailings: sources, effects and
Increasing population levels, growing economies, rapid urbanization and changes in consumption patterns have increased the demand for raw materials such as base and precious metals, leading to growing concerns regarding their availability and the global efficiency of the mine supply chain. Mine tailings, consisting of process effluents that are generated in a …
(PDF) Bioremediation techniques for the treatment of mine tailings…
Biosorption is a significant mechanism of MT tailings treatment by algae. Literature reported dead cells of algae to be more efficient for metal removal compared to the living cells in cases where the carboxyl group significantly influences metal binding on the surface of the cell and intracellular ligands (Srinath et al., 2002; Velásquez and ...
Current state of fine mineral tailings treatment: A critical …
For example, typical coal preparation plants discharge 75–120 kg of dry tailings per tonne of coal processed.These tailings are in the slurry form, with total solid contents ranging between 20% and 35% (w/w) (Ryu et al., 2008, Beier and Sego, 2009, Murphy et al., 2012).In 2002, the U.S. National Research Council estimated that 70–90 million tonnes of tailings were …
Toward sustainable remediation of oil sands fine Tailings …
Tailings management regulations (e.g., Directives 074 and 085) were put into place as a response to increasing concerns over the risks and uncertainties associated with tailings ponds management and increases in oil sands tailings inventory (Alberta Energy Regulator, 2009, 2017).Since then, oil sands operators have attempted to reduce tailings …
Treatment of tailings in mining operations
Wastewater produced by the mining industry is also known as tailings. Tailings contain waste from the extraction processes, equipment washing water and the refining process. It is a sludge-like waste that contains a mixture of fine gangue particles, chemicals and water; and in many cases is stored in large facilities called tailings dams or ponds.
Recovery of pyrite from copper tailings by …
In this article the recovery of pyrite before storing it in the tailing deposit to produce pyrite concentrates of economic interest, and to avoid the generation of acid mine drainage-AMD when...
Finding New Life for Tailings: Sustainable Technology for Co, …
Outotec has a well-proven treatment process for tailings using the fluid bed roasting process, which can generate multiple revenue streams. The capacity of pyrite roasting plants has been in the past designed up to about 1000 tpd of concentrate in one fluid bed roaster.
Recent practices in mine tailings' recycling and reuse
Pyrrhotite, as an iron sulfide with a lower sulfur content over pyrite, can also be produced during the thermal treatment of sulfidic mine tailings. Pyrrhotite is a valuable …
[PDF] Current state of fine mineral tailings treatment: A …
DOI: 10.1016/J.MINENG.2014.01.018 Corpus ID: 96620110; Current state of fine mineral tailings treatment: A critical review on theory and practice @article{Wang2014CurrentSO, title={Current state of fine mineral tailings treatment: A critical review on theory and practice}, author={Chen Wang and David Harbottle and Qingxia Liu and Zhenghe Xu}, journal={Minerals Engineering}, …
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 ...
(PDF) Evaluation of pre-treatment methods for gold …
Evaluation of pre-treatment methods for gold recovery from refractory calcine tailings November 2022 Journal of the Southern African Institute of Mining and Metallurgy 122(10):1-10
A comprehensive review of radioactive pollution treatment …
Natural uranium is a crucial resource for clean nuclear energy, which has brought significant economic and social benefits to humanity. However, the development and utilization of uranium resources have also resulted in the accumulation of vast amounts of uranium mill tailings (UMTs), which pose a potential threat to human health and the ecological …
Improving Tailings Dam Safety via Soil Treatment
Mine tailings are the byproduct of mining activities, which need to be disposed of once the minerals in the ore are extracted. They can be disposed of in either dry or wet forms. The latter is most common, with the tailings being disposed of in the form of slurry inside retention structures. The retention structure may be a natural or manmade dam, with a …
(PDF) Optimize the Preparation of Novel Pyrite Tailings …
Here, we reported a novel non-sintered ceramsite prepared with pyrite tailings (PTNC) as the main active raw material for phosphorus control, and the dosage effect of …
Tailings Management
Operators must submit a summary of fluid tailings management activities during the reporting period, including fluid tailings treatment and placement operations (showing alignment with the reclamation plan), technology development, and contingency or mitigation actions initiated in response to fluid tailings volume profile deviations or ...
A review of circular economy strategies for mine tailings
Pyrometallurgical solutions for tailings treatment are interesting due to the transformation of iron into hematite or magnetite and the transformation of sulphides into …
Pan African's tailings re-treatment projects: safer, …
Having acquired the Mintails assets, Pan African's ongoing strategy to re-process historical tailings dams is expected to make the area safer and greener, while generating economic benefits for the communities and …
Mining-related multi-resistance genes in sulfate-reducing …
However, present studies on the occurrence of ARG in microbial treatment tailings are still scarce because most of the ARG research has been focused on antibiotic issues in tailings after phytostabilization or without any treatment (Nosalova et al. 2022; Yi et al. 2023). A better understanding of the linkage of ARGs and MRGs in tailings with ...
Utilization of Flotation Phosphate Tailings and Water Treatment …
DOI: 10.1166/SAM.2019.3512 Corpus ID: 199651943; Utilization of Flotation Phosphate Tailings and Water Treatment Sludge in Cemented Paste Backfill Based on Phosphate Tailings
Use of coal beneficiation tailings as solid sorbents in the treatment
This work evaluates the application efficiency of coal tailings beneficiation as a solid sorbent in the treatment of real wastewater contaminated with nitrate. The solid was characterized by XDR, SEM, FTIR and TGA. Adsorption experiments were performed in batch evaluating the effects of pH, solids concentration and contact time parameters. The kinetics of …
Tailings management
of tailings treatment, with technology that gives you high separation rates, dry solids and clean water for reuse. We use high-grade materials such as tung-sten carbide, stainless steel and super duplex, and offer solutions for both high and low pH values. Due to their specially