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Rio Tinto and GMR partner to explore potential use for ...

Mar 07, 2018 · Rio Tinto is partnering with Global Mineral Recovery, Incorporated, (GMR) of Worcester, MA, an innovator in processing fine particle industrial residue using environmentally friendly technology, to explore the potential to extract minerals from the bauxite residue produced by its Vaudreuil refinery, in the Saguenay – Lac-Saint-Jean, Québec.

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Bauxite residue issues: I. Current management, disposal ...

The alkalinity of bauxite residue is a result of complex solid-state and solution phase interactions. A better understanding of these interactions is required to support progress in the development of sustainable bauxite residue management and re-use options, so ongoing research on the chemistry and technology of residue neutralization is required.

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Bauxite residue uses: successes, failures and

Amount of bauxite residue generated •Bauxites - alumina content ranges typically from just over 30% to 67% •Amount of bauxite residue per tonne of alumina depends on bauxite and extraction conditions •Very wide range - 0.5 to 4 t of bauxite residue/t of alumina •World average (2010) - 1.35 t of bauxite residue/t of alumina

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Disposal – Red Mud Project

The muds are not removed, but are accumulated and disposed in place. The muds dry to a solid with a very fine particle size (sometimes less than 1μm). Red muds from bauxite refining are generated at four facilities. The fifth facility, Alcoa in Bauxite, Arkansas, generates a residual that is different in color and is commonly called brown mud.

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Management and use of bauxite residue - .

BAUXITE 1 Aluminium International Today March/April 2016 Management and use of bauxite residue *Consultant, International Aluminium Institute This paper serves as a brief overview of the history and trends in the management and use of bauxite residue, outlining: The dimensions of the problem; how methods

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Gregory V. Lowry | Bauxite Residue (Red Mud) Treatment ...

Bauxite residue (Red Mud) from aluminum production, fly ash from coal combustion, and waste water treatment plant (WWTP) biosolids are three examples of high volume waste streams. Approximately 3 million tons of Red Mud are produced in the U.S. each year (30 M/yr globally), and are disposed in land-based impoundment reservoirs.

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Applications of bauxite residue: A mini-review - Ajay S ...

Bauxite residue is the waste generated during alumina production by Bayer's process. The amount of bauxite residue (40–50 wt%) generated depends on the quality of bauxite ore used for the processing. High alkalinity and high caustic content in bauxite residue causes environmental risk for fertile soil and ground water contamination. The caustic (NaOH) content in bauxite residue leads to ...

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Dust Management Plan for the Alcoa Pinjarra Bauxite ...

Dust Management Plan for the Alcoa Pinjarra Bauxite Residue Disposal Area . ... One of the community concerns discussed by the Pinjarra Bauxite Residue Stake holder Reference group (SRG) related to control of dust emissions from the residue drying area. ... A key residue research and development project aimed at use of residue as a resource is the

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Bauxite residue uses: successes, failures and

Amount of bauxite residue generated •Bauxites - alumina content ranges typically from just over 30% to 67% •Amount of bauxite residue per tonne of alumina depends on bauxite and extraction conditions •Very wide range - 0.5 to 4 t of bauxite residue/t of alumina •World average (2010) - 1.35 t of bauxite residue/t of alumina

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From aluminium to bauxite residue (red mud) - sintef.no

From aluminium to bauxite residue (red mud) -When circularity works and when it's more of a struggleSINTEF Circular Economy Conference June 3, 2019. Langesund. Linda Wiik, Hydro.

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Bauxite tailings - Wikipedia
ARTICLE: Addressing the Challenge of Bauxite Residue ...

Mar 11, 2019 · Evans, K., "Successes and Challenges in the Management and Use of Bauxite Residue," Bauxite Residue Valorisation and Best Practices Conference, Leuven, May 7-10, 2015. "Bauxite Residue Management," World Aluminium and the European Aluminium Association. Mineral Commodity Summaries (PDF), U.S. Geological Survey, January 2018, pp. 30–31.

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Industrial wastes applications for alkalinity regulation ...

Bauxite residue is a highly alkaline material generated from the production of alumina in which bauxite is dissolved in caustic soda. Approximately 4.4 billion tons of bauxite residues are either ...

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BAUXITE RESIDUE AS A RAW MATERIAL FOR SCANDIUM OXIDE ...

bauxite and laterite ores [1]. In the primary bauxite processing (the Bayer cycle), 95-98 % of scandium contained in the bauxite passes into bauxite residue –red mud (hereinafter –BR); o scandium content in the bauxite depends on the geological material from which bauxite was formed during weathering. Ultrabasic and basic rocks

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Applications of bauxite residue: A mini-review - Ajay S ...

Bauxite residue is the waste generated during alumina production by Bayer's process. The amount of bauxite residue (40–50 wt%) generated depends on the quality of bauxite ore used for the processing. High alkalinity and high caustic content in bauxite residue causes environmental risk for fertile soil and ground water contamination. The caustic (NaOH) content in bauxite residue leads to ...

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Mining and Refining – Bauxite Residue Management

The most important barrier to remediation, use and long term sustainability of bauxite residue management is its high alkalinity. Bauxite residues and the runoff from storage areas can be treated to reduce their pH, further reducing the risk of environmental impacts and facilitating rehabilitation of the disposal area after closure.

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Dust Management Plan for the Alcoa Pinjarra Bauxite ...

Dust Management Plan for the Alcoa Pinjarra Bauxite Residue Disposal Area . ... One of the community concerns discussed by the Pinjarra Bauxite Residue Stake holder Reference group (SRG) related to control of dust emissions from the residue drying area. ... A key residue research and development project aimed at use of residue as a resource is the

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Recovery of iron from bauxite residue using advanced ...

In the Bayer process, bauxite is digested with sodium hydroxide solution at high temperature and pressure producing alumina and generating the waste known as 'red mud' or 'bauxite residue' in large quantity. After the process, the residue which is alkaline in nature has pH of 10.5–13 and is disposed of in red mud ponds.

  • Author: Suchita Rai, M.T. Nimje, M.J. Chaddha, Sweta Modak, K.R. Rao, Anupam AgnihotriGet Price
Re‐using bauxite residues: benefits beyond (critical raw ...

Bauxite residues from alumina production are available at a ‐million tonnes scale worldwide. So far, attempts have been made to find alternative re‐use applications for bauxite residues, for instance in cement / pig iron production. However, bauxite residues .

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LEACHING ASSESSMENT METHODOLOGIES FOR DISPOSAL .

production facilities. The international annual bauxite residue production is approximately 120 Mt. The cumulative amount of bauxite residue disposed prior to 2009 is more than 2500 Mt. Bauxite residue, or red mud, is the largest environmental concern of alumina refineries because of the production rate of the waste stream and its alkaline nature.

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