No.169, Science (Kexue) Avenue,National HI-TECH Industry Development Zone, Zhengzhou, China
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0086-371-86549132
No.169, Science (Kexue) Avenue,National HI-TECH Industry Development Zone, Zhengzhou, China
[email protected]
0086-371-86549132
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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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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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 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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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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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 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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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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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 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
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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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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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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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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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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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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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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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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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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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
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
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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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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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
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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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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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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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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