Reaction behaviors and amorphization effects of titanate species in pure substance systems relating to Bayer digestion

Wang, Yanxiu; Zhang, Ting‐an; Lv, Guozhi; Zhang, Weiguang; Zhu, Xiaofeng; Liqun, Xie

doi:10.1016/j.hydromet.2017.04.009

Cited by 7 publications

(1 citation statement)

References 11 publications

(18 reference statements)

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“…K 1.33 (H 2 O) 0.33 Ti 4 O 8.33 (OH) 0.67 was generated during titanium-containing mineral reactionswith KOH and without the addition of lime, which formed a film on the surface of the diaspore and prevented further reaction between leach solution and the diaspore; therefore, alumina digestion efficiency was low. With the addition of lime, the K 1.33 (H 2 O) 0.33 Ti 4 O 8.33 (OH) 0.67 in the leach residue that inhibits dissolution disappeared, therefore promoting the decomposition of the diaspore [20][21][22]. Similar to the alumina leaching of diaspore digestion, the addition of CaO in this study also greatly promoted the decomposition of cookeite.…”

Section: The Effects Of Lime Dosage On Lithium and Alumina Extraction Efficiencymentioning

confidence: 74%

Leaching Behavior of Lithium-Bearing Bauxite with High-Temperature Bayer Digestion Process in K2O-Al2O3-H2O System

Han

Peng

Song

et al. 2021

Metals

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Lithium is one of the secondary mineral elements occurring in bauxite. The behavior of lithium-bearing bauxite in the digestion process was investigated, and the effect of digestion conditions on the extraction rates of lithium was studied. The results demonstrate that the mass ratio of the added CaO to bauxite, the KOH concentration, and the digestion temperature had a significant effect on the lithium extraction efficiency. An L9(34) orthogonal experiment demonstrated that the order of each factor for lithium extraction from primary to secondary is lime dosage, caustic concentration, and reaction temperature. Under the optimal conditions (t = 60 min, T = 260 °C, ρ(K2O) = 280 g/L, and 16% lime dosage), the leaching efficiencies of lithium and alumina are 85.6% and 80.09%, respectively, with about 15% of lithium entering into red mud. The findings of this study maybe useful for controlling lithium content in alumina products and lithium recovery from the Bayer process.

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Section: The Effects Of Lime Dosage On Lithium and Alumina Extraction Efficiencymentioning

confidence: 74%

Leaching Behavior of Lithium-Bearing Bauxite with High-Temperature Bayer Digestion Process in K2O-Al2O3-H2O System

Han

Peng

Song

et al. 2021

Metals

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Hematite and Anatase Conversion to Magnetic Phases During Reductive Re-digestion of Gibbsitic Bauxite Residue

Araújo

Silva

Carmo

et al. 2023

The Minerals, Metals &Amp; Materials Series

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Interactions of iron and titanium-bearing minerals under high-temperature Bayer digestion conditions

Wang

et al. 2019

Hydrometallurgy

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Reaction behaviors and amorphization effects of titanate species in pure substance systems relating to Bayer digestion

Cited by 7 publications

References 11 publications

Leaching Behavior of Lithium-Bearing Bauxite with High-Temperature Bayer Digestion Process in K2O-Al2O3-H2O System

Leaching Behavior of Lithium-Bearing Bauxite with High-Temperature Bayer Digestion Process in K2O-Al2O3-H2O System

Hematite and Anatase Conversion to Magnetic Phases During Reductive Re-digestion of Gibbsitic Bauxite Residue

Interactions of iron and titanium-bearing minerals under high-temperature Bayer digestion conditions

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