Quality of Phosphate Rocks from Various Deposits Used in Wet Phosphoric Acid and P-Fertilizer Production

Review Green & Sustainable Science & Technology

Waste rock reprocessing to enhance the sustainability of phosphate reserves: A critical review

Hicham Amar et al.

Summary: The demand for phosphate continues to grow, leading to the depletion of high-grade ore resources and necessitating the exploitation and beneficiation of low-grade phosphate ores and phosphate mine waste rock (PMWR). This review discusses the recent advances in beneficiation technologies for reprocessing PMWR, including sorting, flotation, gravity separation, ore sorting, magnetic, electrostatic, and thermal separation, and hydrometallurgical methods. The findings suggest that ore sorting, gravity separation, flotation, and calcination are suitable methods for recovering phosphate from PMWR.

JOURNAL OF CLEANER PRODUCTION (2022)

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Article Engineering, Chemical

Release and recovery of fluorine and iodine in the production and concentration of wet-process phosphoric acid from phosphate rock

Bingxian Peng et al.

Summary: This study proposes a simple, low consumption, high recovery and purity method for recovering fluorine and iodine in wet-process phosphoric acid. It can reduce environmental pollution and increase the added value of production.

MINERALS ENGINEERING (2022)

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Article Environmental Sciences

Release of fluorine and chlorine during increase of phosphate rock grade by calcination and digestion

Bingxian Peng et al.

Summary: The experiments focused on calcination and digestion to increase the grade of phosphate rock, investigating the release of fluorine and chlorine in the process. Fluorine and chlorine mainly existed in carbonate-bound and residual forms in phosphate rock. Optimal digestion conditions were found to be a liquid-solid ratio of 2.5:1, digestion temperature of 60 degrees C, and digestion time of 50 minutes.

ENVIRONMENTAL POLLUTION (2021)

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Article Chemistry, Analytical

Kinetic and equilibrium studies for U(VI) and Cd(II) sorption from commercial phosphoric acid using C100H resin

Amir A. Elzoghby

Summary: The study demonstrates that the commercial cation exchange resin C100H has high affinity for uranium and cadmium ions in commercial di-hydrate phosphoric acid, removing approximately 95.8% and 82.5% of the ions, respectively. The sorption process follows the pseudo-second order kinetic model and Langmuir isotherm model, with the sorption capacities of C100H resin for U(VI) and Cd(II) ions being 14.6 and 3.3 mg/g, respectively. The resin shows high stability for 6 sorption/desorption cycles.

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY (2021)

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Review Metallurgy & Metallurgical Engineering