desulphurisation of tailings

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.

Cold-bond agglomeration of gold mill tailings for backfill ...

Therefore, as a lowcost binder, gypsum (beta-hemihydrate) can be utilized economically in the agglomeration process of fine gold mill tailings. Since flue gas desulphurisation gypsum (FGD) products are now available in the market, it is viable to use it as a low cost binder for the CBTA process.

Québec authorises Nouveau Monde Graphite's Matawinie ...

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-Témiscamingue (UQAT). For long-term sustainability, the co-disposal storage facility will also have a capillary barrier effect ...

Cementing Property of Cement with Desulfurization and ...

With the purpose that the desulphurized and skimming slag tailings powder from Ansteel replaces part of cement, water requirement of normal consistency, soundness, setting time and strength of cement with desulphurized and skimmed slag tailings was researched respectively in this paper. Results demonstrated that both of the compressive strength and the rupture strength of cement mortar of 3 ...

Dry Desulfurization Equipment For Removal Of Hydrogen Sulfide

Dry Desulfurization Equipment For Removal Of Hydrogen Sulfide. Dry Desulfurization System Is A Standardized Desulfurization Technology Of Our Company Specially Designed And Manufactured With The Cycle And Relevant Data For The Customers According To The Hydrogen Sulfide H2S Content And The Real Gas Volume The Size Of

(PDF) Desulfurization of the Old Tailings at the Au-Ag-Cu ...

Environmental desulphurization of four Canadian mine ...

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 ...

tailings Archives - Page 2 of 6 - International Mining

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 Université du Québec en Abitibi-Témiscamingue.

Application of the Lime/Limestone Flue Gas Desulfurization ...

nificant amounts of alkali such as copper tailings or fly ash, the particles collected in the venturi can be fed right into the recycle tank and the alkali will be extracted in the spray tower recirculation loop an d reduc e th amoun t o alkali require for neutralization of the SO2. Reheat might be required by, for example, a steam to air

Evaluation of physical parameters in environmental ...

Desulfurized tailings •Possible to use non acid generating tailings as cover material for reclamation of AMD generating sites (e.g. Aubertin et al. 1995, 1997, 1999, Bussière et al. 1997, 2004, 2007, Li et Catalan 1997, Mbonimpa et al. 2003, Demers et al. 2008, Pabst et al. 2017) •Environmental desulfurization can provide adequate material ...

Environmental remediation of sulfidic tailings with froth ...

The removal of sulfidic species in tailings using froth flotation is a promising approach to prevent phenomena such as acid mine drainage. However, flotation requires the consumption of reagents and water that represent additional expenses. Despite the strong interest of scientists and industry alike on tailings remediation, there is no study ...

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Proactive management of environmental liability Through its demonstration operations, Nouveau Monde has already validated its process for desulphurisation of tailings and completed the ...

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).

Biomass Production on Reclaimed Areas Tailing Ponds ...

The tailings ponds are stores of very fine waste containing significant amounts of water. Their mobility from the pond is high, if they are released. Subsequently, they can have trans‐boundary impacts, also impact on the landscape areas and protected areas of European importance because they migrate long distances, particularly over the ...

Desulfurization of the Old Tailings at the Au-Ag-Cu Tiouit ...

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 chalcopyrite. The tailings also contain gold (3.36–5.00 ppm), silver (24–37 ppm), and copper (0.06–0.08 wt %). Flotation tests were conducted to reprocess the tailings for Au, Ag, and Cu recovery ...

Desulfurization of aged gold-bearing mine tailings ...

Desulfurization is a novel approach for the reclamation of abandoned mine sites that can have environmental and economic benefits, particularly when combined with the recovery of valuable elements. Desulfurization by flotation produces sulfide-lean tailings, which can be used as cover materials, and sulfide-rich concentrates, which may contain ...

Limestone Mill For Desulfurization Of Flue Gases

Desulfurization Of Flue Gas. The flue gas desulfurization (FGD) plant removes sulfur dioxides (SO 2) from flue gas produced by boilers, furnaces, and other sources.More than ninety percent of U.S. flue gas desulfurization (FGD) system capacity uses lime or limestone.

Key Milestone Reached as Nouveau Monde Receives Quebec ...

Recycling of Kaolin Tailings Waste | Quarrying & Aggregates

Kaolin will produce a large amount of tailings waste after ore beneficiation and recovery. Due to less recycling of kaolin tailings, as the tailings continue to accumulate, they will occupy a large amount of land, pollute water quality, cause vegetation damage and soil erosion, and even cause mudslides, which will seriously affect the ecological environment.

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

(PDF) Designer tailings: improving the management of ...

Edraki et al. / Journal of Cleaner Production 84 (2014) 411e420 413 The combined effect of a slow moving oxidation front, sorption facilities or embarkment lifts required), and even an improvement of heavy metals and metalloids in a large volume of non-weathered in gold recovery have been reported for dewatered tailings (Van tailings, and long ...

Choosing the Right Pump for Flue Gas Desulphurisation

As new coal-fired power plants come on line to meet the growing demand for electricity in the US and around the world, there is an increasing need to clean plant emissions to meet clean air regulations. Special pumps and valves help to operate these scrubbers efficiently and handle the abrasive slurries used in the flue gas desulphurisation (FGD) process.

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

(1997). Cold-Bond Agglomeration of Gold Mill Tailings for Backfill Using Gypsum Betahemihydrate and Cement as Low Cost Binders. Canadian Metallurgical Quarterly: Vol. …

(PDF) Effect of tailings properties on paste backfill ...

Desulphurisation particle size distributions of tailings TA-1 to TA-5 allowed us to create five different tailings (TB-5 to reveals that these latter had different uniformity TB-10) from the TB samples that differ only by coefficients of between 7 and 18, different density (table 2).

St-Michel-des-Saints Archives - International Mining

Synergistic utilization of red mud for flue-gas ...

A synergistic utilization of bauxite tailings for flue-gas desulfurization and geopolymer preparation was investigated. • The bauxite tailings had significant alkalinity and desulfurization capacity. • The benefit of bauxite tailings after desulfurization is significant for geopolymer with class C fly ash.

Comprehensive utilization of limestone sandstone mine tailings

Comprehensive utilization of limestone sandstone mine tailings. Limestone is a kind of sedimentary rock, the main components are calcium carbonate and magnesium carbonate, etc. The tailings produced by sandstone processing are mainly stone chips and stone powder. Stone chips can generally replace fine aggregate and crushed stone to be used as ...

Desulfurization of Hot Coal-Derived Fuel Gases with ...

Transition metal oxides for hot gas desulphurisation. Fuel 1999, 78 (5), 601-612. DOI: 10.1016/S0016-2361(98)00185-9. Paul J. Troy, John C. Wiltshire. Manganese tailings: Useful properties suggest a potential for gas absorbent and ceramic materials.