Recovery of strategically important critical minerals from …
The particle size can also affect other methods of minerals recovery, such as flotation. The efficiency of flotation process dramatically drops when the particle size is too small. Studies have shown that the efficiency of flotation decreases to 50% from 95% when the particle size is reduced from 20 µm to 3 µm.
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Tailings storage facilities, failures and disaster risk | Nature
Mining generates 13 billion tonnes per year of potentially toxic wet slurry waste, called tailings, commonly deposited in tailings storage facilities (TSF). Since 1915, 257 TSF failures have ...
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A review on complex utilization of mine tailings: Recovery of …
Chemicals used in flotation, leaching agents, solvent extractants, ... Across different tailing types, the average REE content has been measured to range from 0.01 to 0.3 wt% [5], with some examples being bauxite tailings (0.05–0.1 wt%) [76], ...
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Extraction of lithium as lithium phosphate from bauxite …
Lithium-rich bauxite ores have been reported in the French Alps and Guizhou, southwest China (Verlaguet et al., 2011, Wang et al., 2013), and Li is enriched in clay minerals in the mine tailings (Zhang et al., 2019).Bauxite resources in SW China are abundant, especially in Guizhou, and a large number of bauxite deposits have been mined (Sun et al., 2020).
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Mine tailings dams: Characteristics, failure, environmental impacts
The froth flotation process utilizes flocculants to render targeted metal cations hydrophobic in order that they may be separated from the bulk material. ... released 7.0 × 10 5 m 3 of Al tailings and bauxite processing effluent, with a pH of 13.5, into the Torna Creek and Marcal River. Finally, in the morning hours ... (Montana, USA) tailing ...
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Distribution behavior of collector in the desilication system …
The distribution behavior of the HZB collector (a kind of long chain fatty acid) in the desilication system of bauxite flotation was studied. The results show that the collector tends towards froth products in the steps of the roughing, the first cleaning and the second cleaning, while towards the tailing product in the step of the scavenging, and in each job except …
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A study of bauxite tailing quality improvement by …
reverse flotation method to recover alumina content from washed bauxite tailing. The reverse flotation experiments were carried out at pH of 6 and 8; while the particle sizes were varied at -
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Leaching Behaviors of Lithium-Rich Bauxite Flotation Tailings …
This paper systematically investigated the leaching behavior of bauxite lithium-rich beneficiation tailings in caustic solution, together with their phase and morphological changes.
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Advances in Beneficiation of Low-Grade Bauxite | SpringerLink
Bauxite is the major alumina (Al 2 O 3) bearing ore used in the aluminum manufacturing industries.The bauxite containing less than 50% Al 2 O 3 is called low-grade bauxite ore which is commonly used for the alumina -based abrasives and refractories productions. The alumina -silica and alumina -ferrite complexes are the foremost impurities …
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Extraction of lithium and aluminium from bauxite mine …
Bauxite mine tailings can be used as the reserve resources of aluminium and lithium. In this study, a less energy consumption treatment method for extracting aluminium and lithium from bauxite mine tailings has been proposed, which used mixed acid to leach aluminium and lithium from tailings directly, avoided roasting for reducing energy consumption, and …
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Long-term leaching characteristics of heavy …
With the development of the alumina industry, in addition to generating red mud waste, the Bayer flotation process also produces many bauxite tailings (BTs) [1]. ... (FA) with bauxite tailing (BT) slurry for …
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Comparative study on the effect of bauxite tailings on …
Treatment of backwater in bauxite flotation plant and optimization by using Box-Behnken design. Trans. Nonferrous Met. Soc. China, 29 (4) (2019), pp. 821-830. ... Use of bauxite tailing for the production of fine lightweight aggregates. J. Clean. Prod., 372 (2022), Article 133603. View PDF View article View in Scopus Google Scholar
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Flotation Decarbonization and Desulfurization of a …
Under these conditions, the sulfur content of the tailing was 0.56% and the desulfurization degree reached up to 94.9%, which indicated that the butyl xanthate was an efficient collector for pyrite in the flotation of high-sulfur …
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Influence of Heat-Treatment Schedule on Crystallization and
Bauxite tailing, generated during the flotation-Bayer process, is a kind of waste product. At present, most of them are deposited on land surface, which not only occupies mass land but also ...
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Flotation of Low-Grade Bauxite Using Modified Humics as …
The low-grade bauxite, which is abundant in China, cannot be directly used in Bayer process. Flotation of low-grade bauxite is an effective way to improve the grade. Flotation experiments were carried out by using modified humics as depressant in this paper. ... The air with flow rate 200 l/h was injected after reagents addition. The pulp of ...
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Enhanced Bauxite Recovery Using a Flotation Column …
Figure 3. All reagents used in the flotation tests were of chemically pure and purchased from Aladdin Biochemical Technology Co., Ltd, Shanghai, China. Figure 2. Experiment apparatus used for bauxite flotation: (a) flotation column system; (b) packing medium. Figure 3.
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Implementation of reverse flotation method to reduce …
This paper reports a study that implements reverse flotation method to separate silica from West Kalimantan bauxite ores. The study is aimed to find the good process condition to obtain low-silica bauxite as the feed for the Bayer process. The experiments were carried out in a 1 L of flotation cell tank. Dodecylamine was used as the collector, starch as the …
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Sustainable Lithium Practices in the Aluminum Industry: A …
Understanding the impacts of lithium in sodium aluminate solution and the benefits of its recycling during aluminum production, as well as the methods to reduce the negative …
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Properties of an aged geopolymer synthesized from
DOI: 10.1016/J.CEMCONRES.2017.05.017 Corpus ID: 136408191; Properties of an aged geopolymer synthesized from calcined ore-dressing tailing of bauxite and slag @article{Ye2017PropertiesOA, title={Properties of an aged geopolymer synthesized from calcined ore-dressing tailing of bauxite and slag}, author={Jiayuan Ye and Wensheng Zhang and Di …
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Extraction of lithium and aluminium from bauxite mine tailings …
The high content of lithium and aluminium greatly improved the economic value of bauxite mine tailings in Guiyang. Tailing resource utilisation is urgent to adopt appropriate technology to extract Al and Li. Because clay minerals are the main components of tailings, the Bayer process is no longer applicable, the acid method (Bazin et al., 2007 ...
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Adsorption mechanisms of Cr(VI) on the modified bauxite …
It is reported that 0.2 t of aluminosilicates tailings is generated form every 1 t bauxite ores processed by flotation. In China, a large quantity of bauxite tailings is stored in the tailing dam after flotation (Liu and Yuan, 2004, Wang et al., 2004). The main minerals in bauxite flotation tailings are diaspore, kaolinite, illite and pyrophyllite.
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A study of bauxite tailing quality improvement by …
Previous research has indicated that bauxite ore can be upgraded by applying reverse flotation method to reduce its silica content in the ore. Therefore, this study is aimed …
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Effect of thermal activation and particle size on
con ratio of the bauxite. Thus, a large amount of bauxite tail - ings are generated in the otation process (Qiang et al. 2019; Lu and Hu 2013). Currently, bauxite tailings are mainly discharged into tailing ponds for storage, which not only causes pollution to …
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Gravity Separation of Zinc Mine Tailing Using
The flotation process is used to concentrate the zinc ore known as willemite. The process generates a residue consisted of hematiteHematite and dolomite. ... Gravity Methods Applied to Bauxite Residue for Mineral Pre-concentration ... The MEV-EDS of zinc mine tailing is presented desegregated hematite and dolomite particles which makes possible ...
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Extraction of Alumina from Coal-Derived Pyrite Flotation Tailing …
A large amount of tailing from the flotation processing of pyrite ore are accumulated and landfilled, resulting in serious environmental pollution and a waste of valuable elements such as Al, Ti, Si, etc. Aiming to extract alumina from coal-derived pyrite flotation tailing, the process has been proposed based on activation roasting-alkali leaching for desilication, followed by alumina ...
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Integrated prediction model of bauxite concentrate grade …
The bauxite flotation circuit is a long-time and complex separation process, consisting of the following flotation banks: roughing bank, rough-scavenging bank, clean-scavenging bank, cleaning I bank and cleaning II bank. Each flotation bank is comprised of dozens of flotation cells. This is done to ensure both high concentrate grade in the ...
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Production of lightweight aggregates from bauxite tailings …
About 0.2 t of tailings is generated for every 1 t bauxite ore processed by flotation [25]. Large quantities of bauxite tailings not only occupy large space but also cause damage to the environment. Bauxite tailings can be used as raw materials of lightweight soil [26], ceramics [27], [28], zeolite [29], geopolymer [30], and cement [31], but ...
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Efficient utilization of red mud waste via stepwise leaching to …
A perspective of stepwise utilisation of Bayer red mud : Step two—extracting and recovering Ti from Ti-enriched tailing with acid leaching and precipitate flotation. J. Hazard.
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Adsorption Mechanisms of Cr(VI) on the Modified Bauxite Tailings
The main waste product generated during the bauxite flotation in China is the aluminosilicate tailings. It is desirable to develop an application of these aluminosilicate tailings for the ...
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