Leaching and concentration of P and K from P-K associated ore by using a sequential leaching process with leachate recycling

Zhou, Jin; Ma, Jun; Qin, Yuan-Hang; Wu, Zaikun; Yang, Li; Lyu, Renliang; Wang, Tielin; Wang, Weiguo; Wang, Cunwen

doi:10.1016/j.seppur.2019.03.099

Cited by 6 publications

(3 citation statements)

References 21 publications

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“…Liu studied the enhancement of the potassium leaching process by surfactants; the potassium leaching rate was increased to 98.01% through the addition of sodium dodecyl sulfate and calcium fluoride in the hydrochloric acid system . Zhou studied the kinetics of potassium and aluminum leaching with the fluoride addition . Li reported the effect of phosphorus–potassium associated ore particle size on the potassium leaching kinetics .…”

Section: Introductionmentioning

confidence: 99%

“…11 Zhou studied the kinetics of potassium and aluminum leaching with the fluoride addition. 12 Li reported the effect of phosphorus−potassium associated ore particle size on the potassium leaching kinetics. 13 Previous studies have focused on the destruction of the potassium feldspar crystal structure by roasting at high temperatures or through the use of fluorine additives to enhance the potassium leaching.…”

Section: Introductionmentioning

confidence: 99%

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Dissolution Behavior and Kinetics of the Phosphorus–Potassium Associated Ore during Phosphoric Acid Leaching

Ren

Wang

et al. 2022

Ind. Eng. Chem. Res.

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The comprehensive utilization of the phosphorus− potassium associated ore has become significant to the new energy industry in China. This study proposes a new method for utilization of the phosphorus−potassium associated ore by phosphoric acid leaching. The mineral phase of the phosphorus−potassium associated ore was analyzed by X-ray diffraction and mineral liberation analysis. The leaching characteristics, mechanism, and kinetics of phosphorus, potassium, aluminum, magnesium, and iron were systematically investigated. Phosphorus and potassium leaching processes were controlled by the internal diffusion of the shrinking core model with apparent activation energies of 30.43 and 23.81 kJ/mol. The optimized leaching process conditions were as follows: stirring speed of 400 rpm, particle size of 150−300 μm, phosphorus concentration (P 2 O 5 ) of 14%, phosphorus-to-calcium ratio of 9.65, reaction temperature of 40 °C, and reaction time of 60 min. The phosphorus leaching rate was 96.18 ± 0.92%, and the potassium leaching rate was 2.60 ± 0.08%. The acid-insoluble residue was mainly composed of potassium feldspar, indicating that effective separation of phosphorus and potassium was achieved through phosphoric acid leaching.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dissolution Behavior and Kinetics of the Phosphorus–Potassium Associated Ore during Phosphoric Acid Leaching

Ren

Wang

et al. 2022

Ind. Eng. Chem. Res.

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“…3.2.2.4. Power melting process (PMP) and solid liquid melt growth (SLMG) process[75,76]. Other techniques based on slow cooling from a temperature above T p have been developed.…”

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confidence: 99%

Superconducting magnetic levitation: principle, materials, physics and models

Bernstein

Noudem

2020

Supercond. Sci. Technol.

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In contrast to the interaction between two magnets with opposite magnetization directions, the interaction between a permanent magnet and a superconductor can be stable and result in magnetic levitation. This property can be exploited for the development of high velocity rotating bearings with no mechanical contacts and for the development of levitated trains. In this review, we focus on this latter application. After a brief description of the other techniques developed for levitating trains and the resulting achievements, we describe the magnet-superconductor interaction and recall the achievements in this field. We then give insights into the properties of the employed magnets and arrangement of magnets and we detail the characteristics and the fabrication processes of the most frequently used superconductors. Focusing on physics, we detail the procedures generally used for measuring the vertical (levitation) and the lateral (guidance) forces in magnetic levitation and the results obtained from experiments. We detail and give a critical review of the various models proposed for reproducing the force measurements. In the conclusion we discuss the possible future developments of the technology.

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Separation of potassium from sodium in alkaline solution by solvent extraction with 4-tert-butyl-2-(α-methylbenzyl) phenol

Xing

Wang

Chen

et al. 2021

J. Cent. South Univ.

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Leaching and concentration of P and K from P-K associated ore by using a sequential leaching process with leachate recycling

Cited by 6 publications

References 21 publications

Dissolution Behavior and Kinetics of the Phosphorus–Potassium Associated Ore during Phosphoric Acid Leaching

Dissolution Behavior and Kinetics of the Phosphorus–Potassium Associated Ore during Phosphoric Acid Leaching

Superconducting magnetic levitation: principle, materials, physics and models

Separation of potassium from sodium in alkaline solution by solvent extraction with 4-tert-butyl-2-(α-methylbenzyl) phenol

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