Progress in valuable metal element recovery and utilization of red mud …
Red mud is the solid powder waste generated in the process of alumina extraction by bauxite and a strong alkali residue. Mass accumulation of the red mud causes serious pollution to the environment.
Extraction of Valuable Elements from Red Mud with a Focus …
This paper provides a critical review of hydrometallurgical, solvometallurgical, and complex methods for the recovery of valuable components from red mud, namely, aluminum, …
Recovery of valuable metals from red mud: A comprehensive …
As a bulk solid waste with high alkalinity, red mud (RM) not only occupies a large amount of land and requires high maintenance costs, but also unavoidably generates serious hazards to the surrounding ecological environment. The comprehensive treatment of RM has become an enormous challenge for the green, low-carbon and high-quality development of the global …
Red mud utilisation for sustainable construction and soil
The characteristics and composition of red mud are influenced by the source of the bauxite ore and the methods used in its production. Tables 1 and 2 provide a detailed analysis of red mud's mineral and chemical components from various production methods, indicating that the major constituents are CaO, Al 2 O 3, Fe 2 O 3, SiO 2, TiO 2, and Na 2 O. Red mud …
Properties, hazards and valuable metal recovery technologies of red mud
The composition, properties, environmental hazards, and current status of comprehensive utilization of red mud were studied. A number of studies have been conducted on the use of red mud as a modifying additive for cement, the development of various catalysts based on red mud, and the recovery of various valuable metals from red mud.
Extraction of Valuable Metals from Red Mud
The reason of comprehensive utilization of red mud is that it contains recycled oxides and a variety of valuable metals. In this paper, the basic characterization of red mud is described.
Recovery of Critical Metals from the Bauxite Residues (red mud…
Recovery of Critical Metals from the Bauxite Residues (red mud) of the primary alumina refining industry ... â ¢ Achieving the hydrometallurgical separation of other valuable metal oxides from BR with mineral acids or ILs. Namely the extraction of the oxides of Al (app. 20%wt), Ti (app. 5-6%wt) and V (app 0.5%wt) will be researched as all of ...
Research Progress on Comprehensive Utilization of Red Mud
In light of the valuable elements (Sc, Ti, Fe, etc) that red mud contains, this article puts forwards the principles of comprehensive use of red mud, that is, achieving a comprehensive use of red ...
A review of comprehensive utilization of red mud
Red mud (RM) is a solid waste generated during the process of alumina production. RM has already posed a serious environmental threat with the development of the alumina refining industry. The comprehensive utilization of RM has attracted much attention due to its large-scale generation and harmful nature. This paper introduces the characteristics and state of RM and …
(PDF) Metallurgical process for valuable elements recovery from red mud
Red mud, namely bauxite residue or red sludge, is a potential valued solid waste produced from the alumina extraction process with substantial reserve of over 2.7 billion tonnes worldwide. Taking into account the rise in iron ore price and scarcity
Removal, conversion and utilization technologies of alkali …
From the perspective of chemical composition, red mud is rich in CaO, SiO 2, Al 2 O 3 and Fe 2 O 3, which is the same as the oxide required for the preparation of cement clinkers. Therefore, red mud can also partially replace the raw meal of cement clinkers. The alkali components in red mud also play an important role in the preparation of ...
6.recycling of Red Mud For Value-Added Applications A Comprehensive …
The document summarizes a review on recycling red mud, a hazardous waste from aluminum production, for value-added applications. It discusses that over 4 billion tons of red mud have accumulated globally from aluminum production. While disposal is costly and can pollute the environment, finding uses for red mud can benefit the environment and industries by reducing …
Red mud: An environmental challenge but overlooked …
Red mud: An environmental challenge but overlooked treasure for critical rare earth metals Basudev Swain* Rare earth metals (REMs) are a critical component not only for consumer electronics, but also for a wide range of strategic applications such as clean energy, electric vehicles, aerospace, automotive, and defense.
Overview on Hydrometallurgical Recovery of Rare-Earth Metals from Red Mud
Aluminum is produced from its primary bauxite ore through the Bayer process. Although Al is important nowadays in the development of humanity, its production leads to the generation of a huge amount of waste, called red mud. Globally, the estimation of the stock of red mud is about 4 billion tons, with about 10 million tons located in Turkey. The presence of rare …
A Review on Comprehensive Utilization of Red Mud …
Minerals 2019, 9, 362 2 of 19 Table 2. The production of RM in di erent provinces of China in 2016 [9]. Reproduced with permission from Mukiza et al., Resources, Conservation and Recycling ...
The composition, recycling and utilisation of Bayer red mud
Red mud or bauxite residue is a solid waste generated from the Bayer process. The disposal of red mud leads to a serious environmental threat because of its tiny particle size and high alkaline value. The utilisation and recycling of red mud is currently a crucial issue and needs to be addressed as soon as possible.
Overview on Hydrometallurgical Recovery of Rare-Earth …
The current review summarizes the research on red mud processing and examines the viability of recovering REEs from red mud sustainably, utilizing hydrometallurgy …
Evaluation of red mud as a polymetallic source – A review
The rare-earth elements, including scandium in the red mud samples of different origins, were evaluated to develop a correlation between the associated minerals and rare-earth elements in red mud. The red mud's financial value was estimated to determine the feasibility of selective metal extraction from different red mud.
Extraction of Valuable Elements from Red Mud …
Bauxite residue, known as red mud, is a by-product of alumina production using the Bayer process. Currently, its total global storage amounts to over 4.6 billion tons, including about 600 million tons in Russia. The total …
Comprehensive utilization status of red mud in China: A
Red mud is a solid waste produced during the bauxite refining of alumina. In recent years, environmental problems caused by the accumulation of red mud have become increasingly serious.
Review of Technologies in the Recovery of Iron, …
The various pathways of metal recovery development are (1) the direct recycling of pre-consumer manufacturing scrap/residues, (2) the urban mining of post-consumer End-of-Life products, (3) …
(PDF) Extraction of Valuable Elements from Red …
Bauxite residue, known as red mud, is a by-product of alumina production using the Bayer process. Currently, its total global storage amounts to over 4.6 billion tons, including about 600 million ...
Summary of research progress on separation and extraction …
This paper also provides suggestions for the future development direction of the comprehensive utilization technology of red mud. Keywords: Bayer red mud; Overall …
Mapping the research landscape of bauxite by-products (red mud…
Otherwise, the three publications performed by Binnemans, K. et al. (2015) "Towards zero-waste valorisation of rare-earth-containing industrial process residues: a critical review", Liu, YJ. et al. (2015) "Hidden values in bauxite residue (red mud): Recovery of metals", and Khairul, M.A. et al. (2019) "The composition, recycling and ...
Red mud recycling
Red mud circular economy through valuable metal recovery – an opportunity. Considering the amount of 4 billion tons of red mud stored globally and the metal content in red mud, the total reasonable wealth locked in red mud can be analyzed. It is estimated that the recovery of rare earth metals from red mud could unlock about $4.3 trillion in ...
A review of the red mud utilization possibilities
Second, it could be a useful source of valuable components, such as rare earths and metals, especially iron. Third, red mud could have different environmental applications, in wastewater treatment ...
Recovery of valuable metals from red mud: A comprehensive …
Recovery of valuable metals from red mud: A comprehensive review. Pan X 1 ... decades, especially for the recovery of valuable metals. This paper systematically summarized the research status of recycling valuable metals (Al, Fe, Na, Ti, Sc, Ga, V and RE) from RM in recent years. ... The technical principles and characteristics as well as the ...
A Review on Comprehensive Utilization of Red Mud and …
Red mud (RM) is a by-product of extracting of alumina from bauxite. Red mud contains high quantities of alkali-generating minerals and metal ions, which can cause significant environmental damage. Many valuable components such as rare-earth elements, Al, and Fe, in RM are difficult to be utilized owing to their particle size and alkalinity. Thus, developing an …
Progress on Extraction of Valuable Metals Elements from Red Mud
As a kind of alkaline waste produced in the alumina production process, red mud has a high annual output, large stockpiles, and low utilization rate in this country, which poses a huge threat to the resources and environment. Extracting a large amount of valuable metal elements contained in red mud is of great significance for realizing the resource utilization of red mud.
Comprehensive utilization status of red mud in China: A …
Finally, the recycling of valuable elements in red mud was analyzed. The summarized research focused on the extraction and utilization of iron, aluminum, titanium, and other valuable elements in red mud. Summarized processes for valuable element smelting included magnetic separation, the wet method, the fire method, and bio-metallurgy.