Beneficiation studies of a complex REE ore

Yang, Xiaofeng; Satur, Jacqueline; Sanematsu, Kenzo; Laukkanen, Jukka; Saastamoinen, Tuula

doi:10.1016/j.mineng.2014.10.005

Cited by 42 publications

(23 citation statements)

References 7 publications

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“…This is well in accordance with mineral processing test work on rare metal ores from Khalzan Buregtei conducted by [29]. Likewise, [30] suggested a comminution of <80 µm followed by scavenger flotation for REE-carbonate minerals for processing of a similar rare metal ore. While traditional magmatic rock classification turns out to be inappropriate, which is also displayed in Figure 8 showing rocks with similar chemical and mineralogical compositions that plot into different fields, the pair of numeric R1-R2 values is nevertheless indicative of the petrographic character of each sample.…”

Section: Textural Properties Of Ore Minerals and Their Use For Optimisupporting

confidence: 90%

Section: Textural Properties Of Ore Minerals and Their Use For Optimisupporting

confidence: 90%

“…Alkaline rock hosted rare metal deposits yield potential as future resource for commodities like Zr, Nb, Hf, Y, and the REE. The economic interest in this deposit type is underlined by various international studies of the last decade [1,7,9,10,30]. The complexity of the ore with respect to texture, composition, and variable types of ore minerals is often caused by post-magmatic alteration of the ore-bearing rock suite.…”

Section: Resultsmentioning

confidence: 99%

“…This enhances consumption of water and supplies (e.g., flotation chemicals) as well as of operation costs [28]. While flotation turned out to be effective for REE-carbonates, it cannot concentrate ore minerals with distinctly different physical properties, such as zircon or pyrochlore in the same step (e.g., [28,30]). Owing to the prices of Zr, Nb, and the HREE, the latter ore minerals, which remain in the flotation tailings together with a large mass of gangue minerals, would represent a higher value than the LREE predominantly extracted from carbonates.…”

Section: Textural Properties Of Ore Minerals and Their Use For Optimimentioning

confidence: 99%

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Mineralogical and Chemical Characterization of Zr-REE-Nb Ores from Khalzan Buregtei (Mongolia)—Approaches to More Efficient Extraction of Rare Metals from Alkaline Granitoids

et al. 2019

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Alkaline rocks are worldwide observed as hosts for rare metal (Zr-REE-Nb) minerals. The classification of the ore bearing rock type is challenging due to the fact that textures and mineral assemblage are obscured by post-magmatic alteration. In addition, the alteration causes fine and intricate intergrowth of the ore minerals with associated gangue. Hence, intensive comminution is necessary to liberate the ore minerals, which is one parameter hampering the economical use of this deposit type. This study provides a quantitative mineralogical investigation of the ore bearing rock suite at Khalzan Buregtei as an example of rare metal deposits. R1-R2 multication parameters are shown to be highly appropriate as quantitative mineralogical indicators based on readily available major element datasets to visualize and quantify alteration types of the ore bearing rock suite. The ore minerals were found to be associated with a cluster-forming assemblage of post-magmatic phases. Automated mineralogy was applied to quantify the textural properties of the ore mineral clusters. This finding permits efficient pre-concentration of rare metal ore at coarser particle size fraction, requiring less energy consuming comminution.

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Section: Textural Properties Of Ore Minerals and Their Use For Optimisupporting

confidence: 90%

Section: Textural Properties Of Ore Minerals and Their Use For Optimisupporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Section: Textural Properties Of Ore Minerals and Their Use For Optimimentioning

confidence: 99%

See 2 more Smart Citations

Mineralogical and Chemical Characterization of Zr-REE-Nb Ores from Khalzan Buregtei (Mongolia)—Approaches to More Efficient Extraction of Rare Metals from Alkaline Granitoids

et al. 2019

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“…High gradient magnetic separation (HGMS) is an effective method to recover fine weakly magnetic particles and has been widely applied in mineral processing [1][2][3][4][5], water treatment [6][7][8] and other industrial fields [9][10][11]. In the HGMS system, high permeability magnetic matrices are packed in the uniform magnetic field to induce high magnetic field gradient.…”

Section: Introductionmentioning

confidence: 99%

Effect of Matrix Shape on the Capture of Fine Weakly Magnetic Minerals in High-Gradient Magnetic Separation

Zheng

Wang

2016

IEEE Trans. Magn.

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The magnetic matrix is the core component of the high gradient magnetic separation (HGMS) system and plays a decisive role in the operation of the HGMS system. Cylinder matrix is the most commonly used matrix in HGMS. The matrix shape is a very important parameter influencing the performance of the HGMS system. Special cross-section matrix may have better magnetic characteristics and present better performance in HGMS. However, previous studies of the basic principles of HGMS are basically limited to those employing circular cross-section matrix. Investigations into the magnetic characteristic and performance of special cross-section shape matrix are scarce. In this article, the effect of matrix shape on the capture of fine weakly magnetic minerals in HGMS is investigated with the particle capture model. The matrix shape varies between circular cross-section and elliptic cross-section. The magnetic field and the flow field around the elliptic matrix are analytically calculated. The motion equations of particles around the elliptic matrix under different circumstances are derived and the particle motion trajectories are depicted. The particle capture radius and efficiency of the matrix with shape coefficient L h /L v (ratio of the horizontal axis to vertical axis of the matrix cross-section) ranging from 1/3 to 3 are calculated and compared, providing that the matrix area facing the incoming fluid is the same. The results indicate that there exists the optimal L h /L v value at which the capture radius and efficiency reach the maximum. The optimal L h /L v value increases with the increase of particle size and the decrease of matrix size. Within the L h /L v range of 1/3 to 3, the maximum particle capture efficiency (at the optimal L h /L v or at L h /L v =3) under some arrangements can be much higher than that of the circular matrix (at L h /L v =1), but the increment decreases with the increase of matrix size, the arrangement parameter d/L v and the decrease of particle size. The results provide a theoretical basis for the application of elliptic matrix in HGMS as well as a reference for the development of other novel magnetic matrix in HGMS.

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