Genetic relationship between the Emeishan plume and the bauxite deposits in Western Guangxi, China: Constraints from U–Pb and Lu–Hf isotopes of the detrital zircons in bauxite ores

Deng, Jun; Wang, Qingfei; Yang, Shujuan; Liu, Xuefei; Zhang, Qizuan; Yang, Liqiang; Yang, Yue‐Heng

doi:10.1016/j.jseaes.2009.10.005

Cited by 116 publications

(38 citation statements)

References 29 publications

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“…Ferric bauxite is highly valuable refractory bauxite that is widely distributed in China, Laos, and Tanzania [1][2][3], but is improperly used. Numerous creative attempts have been performed for its utilization due to arduous explorations of predecessors.…”

Section: Introductionmentioning

confidence: 99%

Promote Alumina Leaching through Re-Pelleting: Effects of Directional Coating of Calcite on Silicate Grains

Hu¹,

Qiu²,

Wei³

et al. 2018

Minerals

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Abstract:The contents of Fe and SiO 2 in ferric bauxite are much higher than that in regular bauxite, and the leaching yield of Al 2 O 3 from ferric bauxite cannot reach the general level of ordinary ores, even under optimal conditions. This paper introduces a pretreatment method to enhance sintering before leaching. First, mixing followed by grinding was found to be more efficient than grinding followed by mixing as a pretreatment method by forming a directional coating structure of CaCO 3 on the SiO 2 surface. Second, leaching yields increased grinding fineness because CaCO 3 grain uniformity could be improved with the latter method. Finally, the leaching yields were increased by pulp consistency under certain conditions, as evidenced by improvements in CaCO 3 uniformity, bulk density, and Al 2 O 3 grain size, which parameters were beneficial to enhance leaching. The leaching yield of Al 2 O 3 was increased from 75.2% to 87.15% by using the proposed mixing-grinding method with the leaching agent of water.

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Section: Introductionmentioning

confidence: 99%

Promote Alumina Leaching through Re-Pelleting: Effects of Directional Coating of Calcite on Silicate Grains

Hu¹,

Qiu²,

Wei³

et al. 2018

Minerals

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“…257-262 Ma) in southwest China are exposed over an area of 0.25-0.3 million km 2 in the Sichuan, Yunnan, and Guizhou provinces, comprising a total volume of about 0.25 million km 3 (Huang and Opdyke, 1998), with the thickness of the basaltic flow ranging from 100 to 200 m in the eastern part to more than 5 km in the west (Ali et al, 2010;Deng et al, 2010). The region has been divided into three zones (inner, intermediate, and outer) (Fig.…”

Section: Introductionmentioning

confidence: 99%

“…The region has been divided into three zones (inner, intermediate, and outer) (Fig. 1) based on biostratigraphic, sedimentological, and geochemical characteristics (Xu et al, 2001;Deng et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Mantle roots of the Emeishan plume: an evaluation based on teleseismic P-wave tomography

Santosh

2017

Solid Earth

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Abstract. The voluminous magmatism associated with large igneous provinces (LIPs) is commonly correlated to upwelling plumes from the core-mantle boundary (CMB). Here we analyse seismic tomographic data from the Emeishan LIP in southwestern China. Our results reveal vestiges of delaminated crustal and/or lithospheric mantle, with an upwelling in the upper mantle beneath the Emeishan LIP rather than a plume rooted in the CMB. We suggest that the magmatism and the Emeishan LIP formation might be connected with the melting of delaminated lower crustal and/or lithospheric components which resulted in plume-like upwelling from the upper mantle or from the mantle transition zone.

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“…Ferric bauxite is a typical refractory bauxite which has a wide distribution in Asia [1][2][3] and Africa [1], however, it is improperly developed. The potential methods of treating ferric bauxite include the extraction of alumina before iron [4,5], extraction of iron before alumina [6,7], beneficiation before leaching [8], and biological technique [9,10].…”

Section: Introductionmentioning

confidence: 99%

Improvement of Sodium Leaching Ratio of Ferric Bauxite Sinter after Direct Reduction

Wang

et al. 2017

Minerals

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Abstract:The sodium leaching ratio (η N ) of ferric bauxite direct reduction process is much lower than that of ordinary bauxite; thus, the former consumes more sodium than the latter. η N can be promoted by increasing the dosage of sodium or restricted by increasing the heating temperature and time. However, the restriction effect of heating temperature is 16.67 times larger than that of heating time, and the restriction effect decreases 47.03 times faster when heating temperature increases than that process of heating time. These imply that η N improves with the increasing sodium carbonate dosage and the decreasing heating temperature.

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Genetic relationship between the Emeishan plume and the bauxite deposits in Western Guangxi, China: Constraints from U–Pb and Lu–Hf isotopes of the detrital zircons in bauxite ores

Cited by 116 publications

References 29 publications

Promote Alumina Leaching through Re-Pelleting: Effects of Directional Coating of Calcite on Silicate Grains

Promote Alumina Leaching through Re-Pelleting: Effects of Directional Coating of Calcite on Silicate Grains

Mantle roots of the Emeishan plume: an evaluation based on teleseismic P-wave tomography

Improvement of Sodium Leaching Ratio of Ferric Bauxite Sinter after Direct Reduction

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