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desulphurisation of tailings :

Environmental desulphurization of four Canadian mine ...

2000-8-1  Tailings' samples P and D have low sulphur contents. The gold contents of the two tailings is 0.56 and 0.23 ppm, respectively. One can observe in Table 2 that the main sulphide mineral in all of the tailings studied is pyrite. Sphalerite is a significant component in tailings G and M (1.24 and 1.74 wt.%, respectively), whereas chalcopyrite does ...

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Desulphurisation Of Fine Coal Waste Tailings Using Algal ...

2018-9-5  Desulphurisation of ˜ ne coal waste tailings using algal lipids Kudzai Chiodza1, Susan TL Harrison 1, Marijke A Fagan-Endres 1Centre for Bioprocessing Engineering Research (CeBER), Department of Chemical Engineering, University of Cape Town, South Lane, Upper Campus, Rondebosch, Cape Town, 7700.

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(PDF) minerals Desulfurization of the Old Tailings at the ...

2019-6-30  Tailings from the abandoned Tiouit mine site in Morocco are mainly composed of sulfides, hematite, and quartz. They contain 0.06-1.50 wt % sulfur, mostly in the form of pyrite, pyrrhotite, and ...

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Environmental desulphurization of four Canadian mine ...

Environmental desulphurization is an attractive alternative for management of acid generating tailings. This process placed at the end of the primary process treatment circuit will reduce a large amount of the problematic tailings by concentrating the sulphide fraction.

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(PDF) Environmental desulphurization of four Canadian

Tailings P, M, and G are cyanide free and can be floated at pH values of less than 10 by using amyl xanthate as the collector agent. ... 2013. Desulphurisation offers one such

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Effect of operating parameters on desulphurization of

In recent years, environmental desulphurisation has gained popularity to manage mine tailings (Alam and Shang, 2012; Benzaazoua et al., 2017;Benzaazoua and Kongolo, 2003;Broadhurst and Harrison ...

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Desulphurisation of fine coal waste tailings using algal ...

Desulphurisation of fine coal waste tailings using algal lipids . By Kudzai Godknows Chiodza. Abstract. The South African economy is an energy-driven economy which relies on coal to meet most of its energy demands. Coal mining has resulted in the generation of coal waste over 60 million tonnes, annually. Apart from the huge footprint of this ...

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Desulphurising high sulphur coal discards using an ...

2020-11-1  Proof of concept for high S coal discards desulphurisation by accelerated heap bioleaching. •. Approx. 50% removal of iron and sulphur from coal discards within 250 days. •. The terminal duration for complete desulphurisation is estimated at 600 days. •. Indigenous microbes within the coal discards can be used in accelerated bioleaching.

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(PDF) minerals Desulfurization of the Old Tailings at the ...

2019-6-30  Tailings from the abandoned Tiouit mine site in Morocco are mainly composed of sulfides, hematite, and quartz. They contain 0.06-1.50 wt % sulfur, mostly in the form of pyrite, pyrrhotite, and ...

Read More
Desulphurisation of fine coal waste tailings using algal ...

Desulphurisation of fine coal waste tailings using algal lipids . By Kudzai Godknows Chiodza. Abstract. The South African economy is an energy-driven economy which relies on coal to meet most of its energy demands. Coal mining has resulted in the generation of coal waste over 60 million tonnes, annually. Apart from the huge footprint of this ...

Read More
A 2011 update for the single-layer desulphurised tailings ...

Abstract: A desulphurised tailings cover was installed to reduce oxygen diffusion into underlying sulphidic tailings at the Detour Lake Mine in Ontario, Canada between 1998 and 1999. This paper reviews the outcomes of the original

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Desulphurising high sulphur coal discards using an ...

2020-11-1  Proof of concept for high S coal discards desulphurisation by accelerated heap bioleaching. •. Approx. 50% removal of iron and sulphur from coal discards within 250 days. •. The terminal duration for complete desulphurisation is estimated at 600 days. •. Indigenous microbes within the coal discards can be used in accelerated bioleaching.

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Aitik mine, Sweden - Mine Closure – Mine Closure

Tailings. After desulphurisation, the pyrite-depleted material can be used to cover water saturated tailings with higher pyrite content (e.g. Lindvall Eriksson 2003, Lindvall 2005, Mueller 2012), whereas the pyrite enriched material has to be deposited separately under an engineered dry cover or water cover. (Lindvall 2005) Pyrite enriched ...

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Sustainability ESG » Nouveau Monde Graphite

2021-11-29  Nouveau Monde has put forward innovative design criteria by prioritising design for closure, dry-stack tailings, the desulphurisation of tailings, the gradual backfilling of the pit, and the co-disposal of waste rock and tailings.

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Desulphurising high sulphur coal discards using an ...

Results obtained indicated more than 50% desulphurisation in 250 days with a terminal duration of ~600 days predicted. This confirms the potential of heap bioleaching as a viable strategy for the desulphurisation of high sulphur-containing coal discards during life of mine, with their potential re-purposing as saleable coal or risk-reduced ...

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Nouveau Monde receives provincial green light for ...

2021-2-10  Through its demonstration operations, Nouveau Monde has already validated its process for desulphurisation of tailings and completed the construction of a co-disposal experimental cell through a collaborative partnership with

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Québec authorises Nouveau Monde Graphite’s Matawinie ...

2021-2-10  The company has already validated its process for desulphurisation of tailings through its demonstration operations and constructed a co-disposal experimental cell in partnership with Université du Québec en Abitibi

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Key Milestone Reached as Nouveau Monde Receives Quebec

2021-2-10  Through its demonstration operations, Nouveau Monde has already validated its process for desulphurisation of tailings and completed the construction of a co-disposal experimental cell through a ...

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A Feasibility Study on the Use of Desulphurized Tailings ...

2004-1-1  "Environmental desulphurisation is an attractive alternative for the management of acid generating tailings. Non selective froth flotation is the most commonly used method to produce desulphurized tailings, as shown from many previous works (McLaughlin and Stuparyk, 1994; Bussière et al., 1995; 1998; Benzaazoua et al., 2000a,b; 2002).

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A 2011 update for the single-layer desulphurised tailings ...

Abstract: A desulphurised tailings cover was installed to reduce oxygen diffusion into underlying sulphidic tailings at the Detour Lake Mine in Ontario, Canada between 1998 and 1999. This paper reviews the outcomes of the original

Read More
Desulphurising high sulphur coal discards using an ...

2020-11-1  Proof of concept for high S coal discards desulphurisation by accelerated heap bioleaching. •. Approx. 50% removal of iron and sulphur from coal discards within 250 days. •. The terminal duration for complete desulphurisation is estimated at 600 days. •. Indigenous microbes within the coal discards can be used in accelerated bioleaching.

Read More
A Feasibility Study on the Use of Desulphurized Tailings ...

Environmental desulphurisation is an attractive alternative for the management of acid generating tailings. Non selective froth flotation is the most commonly used method to produce desulphurized tailings, as shown from many previous works (McLaughlin and Stuparyk, 1994; Bussière et al., 1995; 1998; Benzaazoua et al., 2000a,b; 2002).

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Desulphurisation flotation for the selective removal of ...

Thus, ARD is a major issue associated with inactive mines, waste rock dumps and tailings impoundments, which over time presents a major environmental risk. The desulphurisation of coal discards, mine tailings and finely divided waste rock prior to their disposal has been proposed as a method of preventing ARD formation.

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Sustainability ESG » Nouveau Monde Graphite

2021-11-29  Nouveau Monde has put forward innovative design criteria by prioritising design for closure, dry-stack tailings, the desulphurisation of tailings, the gradual backfilling of the pit, and the co-disposal of waste rock and tailings.

Read More
Aitik mine, Sweden - Mine Closure – Mine Closure

Tailings. After desulphurisation, the pyrite-depleted material can be used to cover water saturated tailings with higher pyrite content (e.g. Lindvall Eriksson 2003, Lindvall 2005, Mueller 2012), whereas the pyrite enriched material has to be deposited separately under an engineered dry cover or water cover. (Lindvall 2005) Pyrite enriched ...

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carbonates – Mine Closure

Desulphurisation; Blending; Layering; Encapsulation; Placement of alkaline material above or below waste as liner or cover material; Removal of water; Co-disposal of waste rock with tailings; Chemical passivation using microencapsulation; Underwater disposal in underground mines (during mine operation) Dry Cover. Single soil layer

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Cold-Bond Agglomeration of Gold Mill Tailings for Backfill ...

2013-7-18  (1997). Cold-Bond Agglomeration of Gold Mill Tailings for Backfill Using Gypsum Betahemihydrate and Cement as Low Cost Binders. Canadian Metallurgical Quarterly: Vol. 36, No. 4, pp. 283-288.

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Journal of Building Engineering期刊最新论文, 化学/材料, - X

This research evaluated the feasibility of using iron ore tailings (IOTs) to produce functional conductive composite materials as cement-based sensors based on carbon fiber (CF) reinforced cement composite. In this study, recycled IOTs are used as an alternative material to natural fine aggregate (0%, 30%, and 60%).

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