Flotation of rare earth minerals from silicate–hematite ore using tall oil fatty acid collector

Satur, Jacqueline; Calabia, Buenaventurada P.; Hoshino, Mitsuo; Morita, Shinzo; Seo, Yuna; Kon, Yoshiaki; Takagi, Toshihisa; Watanabe, Yasushi; Mutele, Litshedzani; Foya, S.

doi:10.1016/j.mineng.2016.01.004

Cited by 37 publications

(22 citation statements)

References 20 publications

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“…In terms of REE recovery, the best result was achieved at pulp pH 11. This is consistent with flotation tests carried out by Satur et al (2016), where fatty acids were used to achieve the highest REE recovery from a silicate-haematite ore at pH 11. Figure 6 presents the ratios of REE content to Si and Fe in the flotation concentrates obtained at the respective pulp pH levels tested.…”

Section: Flotationsupporting

confidence: 88%

“…Depressants could be used to minimize the recovery of silicate gangue minerals during REE beneficiation. For example, sodium silicate, disodium sulphide, starch, ammonium lignosulfonate, and sodium oxalate have been shown to be effective depressants of various gangue minerals in REE flotation (Abaka-Wood, Addai-Mensah, and Skinner, 2017b;Chelgani et al, 2015;Satur et al, 2016;Zhang and Anderson, 2017). A combination of the respective separation methods will help achieve a concentrate recovery and grade for subsequent REE extraction by hydrometallurgical or pyrometallurgical processes.…”

Section: Implications and Future Workmentioning

confidence: 99%

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The concentration of rare earth elements from coal fly ash

Abaka-Wood

Addai‐Mensah

Skinner

2022

J. S. Afr. Inst. Min. Metall.

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Recently, coal fly ash has become a potential candidate as a secondary resource of rare earth elements (REE). In this investigation, we studied the recovery of REE from fly ash from a commercial power plant. The specific aim was to assess the technical feasibility of recovering REE from the coal fly ash using conventional preconcentration methods, including gravity separation, magnetic separation, and froth flotation. The experimental results revealed that flotation achieved major gains in REE recovery and upgrading. However, during gravity and wet magnetic separation tests, the bulk of REE reported to the tailings. The results showed significant variations in the performance of the various beneficiation methods investigated. This study has confirmed that existing physical separation methods could be used to recover REE from coal fly ash prior to hydrometallurgical and pyrometallurgical processing, although some challenges persist.

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Section: Flotationsupporting

confidence: 88%

Section: Implications and Future Workmentioning

confidence: 99%

The concentration of rare earth elements from coal fly ash

Abaka-Wood

Addai‐Mensah

Skinner

2022

J. S. Afr. Inst. Min. Metall.

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“…This depressant is widely used in the flotation of non-sulfide minerals to depress carbonates [62]. Moreover, an incomplete liberation of RE minerals from gangue minerals in the feed may deteriorate the flotation performance due to a reduced efficiency of depressants [63]. Hence, reduction in recovery may be related to incomplete liberation of RE minerals over the tested ore granulometry (−105 + 38 m).…”

Section: Micro-flotation Testsmentioning

confidence: 99%

Ionic-liquid collectors for rare-earth minerals flotation⿿Case of tetrabutylammonium bis(2-ethylhexyl)-phosphate for monazite and bastnäsite recovery

Azizi

Larachi

Latifi

2016

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…In particular, the method of reverse flotation dolomite to enrichment apatite is the most popular one [11]. Nonetheless, flotation of REO involves several challenges owing to the discrepancies in REEs occurrence states and the considerably low-grade [12].…”

Section: Introductionmentioning

confidence: 99%

The Occurrence States of Rare Earth Elements Bearing Phosphorite Ores and Rare Earth Enrichment Through the Selective Reverse Flotation

et al. 2019

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The reserve of rare-earth element-bearing phosphorite ores in Guizhou province in western China is huge. Increased demand for the different products manufactured from rare-earth elements has resulted in an extreme need for reasonable and comprehensive extraction of rare-earth elements. An improved understanding of rare-earth element occurrence states in single minerals of ores is important for their further processing. In this paper, rare-earth element contents were analyzed by inductively coupled plasma (ICP), and the occurrence states in single minerals were further investigated through SEM-EDS and focused ion beam-scanning electron microscope (FIB-SEM) methods. The results indicate that rare-earth element contents of apatite are far more than that of dolomite. No independent mineral of rare-earth elements exists for the studied sample. Rare-earth elements are present in the form of ions in the lattices of apatite. Based on the analysis of occurrence states and properties in single minerals, the distribution of rare-earth elements in the flotation process was investigated by reverse flotation technology. It shows that rare-earth elements are mainly concentrated in apatite concentrate. Under the optimized conditions, the P2O5 grade increases from 11.36% in the raw ore to 26.04% in the concentrate, and the recovery is 81.92%, while the total rare-earth oxide grade increases from 0.09% to 0.21% with the recovery of 80.01%, which is similar to P2O5 recovery. This study presents the feasibility of extracting rare-earth elements from rare-earth element-bearing phosphorite ores through the flotation of apatite.

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Flotation of rare earth minerals from silicate–hematite ore using tall oil fatty acid collector

Cited by 37 publications

References 20 publications

The concentration of rare earth elements from coal fly ash

The concentration of rare earth elements from coal fly ash

Ionic-liquid collectors for rare-earth minerals flotation⿿Case of tetrabutylammonium bis(2-ethylhexyl)-phosphate for monazite and bastnäsite recovery

The Occurrence States of Rare Earth Elements Bearing Phosphorite Ores and Rare Earth Enrichment Through the Selective Reverse Flotation

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