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dry tailings discharge for nickel in switzerland

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Tailings

Tailings. Management of tailings storage facilities (TSFs) and water retaining dams is an integral part of our mining and processing activities. We recognise the potential risks that TSFs could present to our people, our communities, the environment and our business, and we are committed to their safe and responsible management.

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ALTA MetBytes

2020-1-13 · jarosite downstream of the autoclave discharge as a means of neutralizing the acid and obtaining a secondary leach from whatever acid is present. Mike Dry (MD), Arithmetic (Canada), floor. invited comments on the feasibility and implications of injecting SO. 3. directly into the HPAL autoclave thus bypassing the conversion to acid step.

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Tailings Dry Stacking, A New Tailings Processing Method ...

2020-11-5 · 01 One. Tailings Wet Discharging VS Tailings Dry Stacking. In terms of tailings discharge methods, there are two main tailings processing methods: tailings wet discharging and tailings dry stacking.. Tailings wet discharging is a kind of traditional tailings wet stacking method.

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IR-T13 Decision report template (short-form)

2021-8-19 · to dry or used to source tailings in generating paste backfill for the nearby Cliffs underground mine. A fifth TSF, TSF 3 Cell F, was recently constructed in April 2021 at the Premises under Works Approval W6280/2019/1 with the deposition of tailings into the cell having recently commenced in accordance with the conditions of L4612/1989/11.

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Supply disruption leaves MHP nickel refiners high and dry ...

2021-7-23 · Supply disruption leaves MHP nickel refiners high and dry. 23rd July 2021 Nickel. The lithium ion battery industry has long viewed mixed hydroxide precipitate (MHP), an intermediate product of nickel laterite ore which is processed via a hydrometallurgical route, as the key source of battery suitable nickel to feed surging demand from electric ...

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Developments and Experience with Harvested Tailings …

Developments and Experience with Harvested Tailings Paste Fill Systems A.G. Grice AMC Consultants Pty Ltd, Australia M.G. Dorricott AMC Consultants Pty Ltd, Australia K. Kuganathan AMC Consultants Pty Ltd, Australia G. Garbin Aquila Mining Pty Ltd, Australia ABSTRACT The introduction of harvested tailings paste fill systems in the past five years has enabled many …

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Tailings dry discharge process flowsheet

In Current years, Tailings dry discharge is a gradual emerging new tailings treatment process. It means the tailing pulp from dressing plant through multi concentration, then use dewatering vibrating screen to treat and get low moisture, easy sediment solidify and good for stockpiling slag. Slag can be transport to fixed position for dry stockpiling is a high technological …

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Twin Metals pitches new method of storing waste at ...

2019-7-18 · "Dry stack" tailings storage is something that environmental groups have advocated for the much-further-along PolyMet copper-nickel mine project, arguing it''s a safer way to store mine waste.

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Tailings What Are Tailings?

2021-1-4 · The engineering characteristics of tailings are in most instances influenced by the degree of thickening and the method of deposition. It is therefore essential that while investigating the properties of tailings that the physical characteristics and material parameters (e.g. beach slope angles, particle size segregation, water recovery) that can occur as a result of varied …

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Mine Tailings

Discharge commonly takes place at elevated perimeter dams; hence there is potential for extensive hydraulic sorting, with coarser fractions settling near the discharge point and finer fractions settling in distal portions of the impoundment (Robertson, 1994). At some sites, tailings are thickened to >60 wt.% solids prior to deposition.

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Disposal Methods on Solid Wastes from Mines in …

2021-7-22 · of 94.7%, nickel recovery ratio of 84.6% and copper recovery ratio of 76.8% at the best floatation condition in the process of recycling of iron tailings. More and more Chinese metal mines have carried out or are to take action on recovering the usable

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Clive Palmer''s company Queensland Nickel not prosecuted ...

2014-2-12 · Clive Palmer''s company Queensland Nickel not prosecuted over toxin discharge in Barrier Reef marine park. ... "One of those is the tailings dam must be lifted by the end of the next dry …

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Flottweg Centrifuge Technology for the Mining Industry ...

2019-11-25 · Discharge of the centrate: heavy liquid phase under pressure, light phase by gravity Feed and discharge devices with control lever for the adjustable impeller of the Flottweg Tricanter® separation zone 2 separation zone 1 T E C h N i C A L i N FO

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WaterShed Tailings Dewatering Technology | Ecolab

WaterShed optimizes conditions to allow for rapid drying and tailings consolidation, which accelerates water recovery and results in dry, stable tailings. By rapidly separating process water from tailings for conservation and reuse, WaterShed enables a mine to maintain safer tailings disposal practices, more cost-effective processes, and less ...

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APPENDIX F1 Tailings storage facility design report

2016-10-19 · 5.4.3 Central Discharge Tailings Storage Facility (CTDSF) 40 5.4.4 Paste Tailings 41 ... successful Mt Keith Nickel operation) and high density or "paste" thickening of the tailings were found ... redistribute water over dry tailings beaches when spare evaporative capacity is available in hotter months, to minimise the quantity of water ...

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Norilsk Nickel caught dumping poisonous waste into rivers ...

2020-6-28 · A major illegal discharge of toxic waste from the Talnakh enrichment plant''s tailing dump was stopped in Norilsk. Journalists Yelena Kostyuchenko and Yuri Kozyrev from Novaya Gazeta newspaper, and a team of ecologists filmed two large pipes dumping poisonous water from the factory''s tailings storage into River Kharaelakh, Lake Pyasino and on the surrounding …

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THE PROPOSED WEDA BAY NICKEL (WBN) MINE PROJECT

2018-8-5 · THE PROPOSED WEDA BAY NICKEL (WBN) MINE PROJECT ... Potential techniques studied included the discharge of slurry tailings to the sea, wet storage of slurry tailings behind a containment dam and dry storage of dewatered residues on land. The choice of dewatering and dry storing the residues on land was a higher cost option, however it was ...

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APPENDICES

2018-10-18 · The project area is arid with dry, hot summers and short, dry winters. ... behaviour characteristics were predicted for the tailings. The discharge percent solids was nominated at around 55% during the life of operation. ... significantly enriched. Further, cobalt, copper, lead, manganese, nickel, sulphur and zinc exceed guideline values ...

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Upstream Raising of Laterite Nickel Tailings Storage ...

The properties of tailings that emanate from laterite nickel processing plants are significantly different to most other mine tailings. They typically comprise a mixture of fine materials that are made up of altered clays, chemical residues and salts. Neutralisation processes that are undertaken prior to tailings discharge result in a high proportion of gypsum in the tailings.

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Cargo Offer

2019-10-29 · Commodity: BULK CARGO. Cargo Qtity (Mts): ANY SIZE Laycan: 11/03/20 - 31/03/20. Load/Discharge Rate (Mts/day): N/A Status: Hot to fix

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MANAGEMENT OF TAILINGS: PAST, PRESENT AND FUTURE

2020-9-8 · Tailings management is typically easier, at least physically, in dry climates, where advantage can be taken of desiccation (that is, drying by exposure to the wind and sun) to naturally dewater, increase the density of the tailings and strengthen the tailings. However, on desiccation in a dry climate, sulphidic

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Thermal Upgrading of Nickeliferous Pyrrhotite Tailings for ...

2019-7-23 · Estimates show that in Sudbury about 75 to 100 Mt Pyrr on a dry basis has been accumulated, and fresh Pyrr tailings are being produced at a rate of up to ~ 5000 tpd. Given these facts, Sudbury Pyrr tailings may be regarded as a significant Ni resource, and a process for the recovery of Ni and mitigation of tailings has been of interest.

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(PDF) Modeling Nickel Leaching from Abandoned Mine …

2021-3-31 · PDF | Underwater disposal of mine tailings in lakes and seas has been considered favorable due to the geochemical stability obtained during long-term... | …

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Process effluents and mine tailings: sources, effects and ...

2017-12-15 · residual tailings ponds. Mine tailings include process-af-fected water, containing dissolved metals and ore pro-cessing reagents and fine-grained ground-up rocks after minerals of value have been extracted from mined ore. In tailings pond, the residues are usually deposited as water-based slurry before recycle/reuse or discharge to envi-ronment.

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Suitability of the Central Thickened Discharge Method for ...

The presence of these minerals impacts on the issue of tailings disposal from several standpoints, particularly the slurry beaching properties and dust generation from dry beaches. Central thickened discharge (CTD) is an innovative method of tailings disposal that involves stacking tailings in a low conical hill instead of storing them in cells.

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Tailing Disposal

After settling and self-weight consolidation, the dry density of the undesiccated tailings is a function of the G s of the tailings solids. For coal tailings, the dry density is about 1.8 t/m 3 due to their low G s, while for metalliferous tailings the dry density is up to 1.5 t/m 3 due to their higher G s. Figures 2.4(a) and (b) show typical wet and dry density and w profiles with depth for ...

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Paper: Rheology for thickened tailings and paste — history ...

Sofra, F. (2001) Minimisation of bauxite tailings using dry disposal techniques, PhD thesis, The University of Melbourne. Sofra, F. (2005) The importance of understanding feed rheology in nickel laterite processing, in Proceedings Processing Nickel …

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Caijiaying Dry Tailings Storage

2016-10-10 · Dry tailings storage, where flotation tailings are filtered to provide an immediate return of process water plus ''dry'' tailings filter cake for stacking, provided an answer to both the land area required, and the water management difficulties.

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WaterShed Tailings Dewatering Technology | Ecolab

WaterShed optimizes conditions to allow for rapid drying and tailings consolidation, which accelerates water recovery and results in dry, stable tailings. By rapidly separating process water from tailings for conservation and reuse, WaterShed enables a mine to maintain safer tailings …

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Mastering dry tailings management in challenging …

2020-10-14 · Mastering dry tailings management in challenging conditions. 14 October 2020. The tailings dam at Hindustan Zinc Ltd''s (HZL) Zawar location was reaching capacity for conventional wet deposition with no space nearby to expand. The company was looking for a tailings …