Effect Of Mechanical Activation On The Structure Of Fluorapatite And Dissolution Of Rare Earth Elements In Esfordi Concentrated Phosphate Of Processing Plant

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Shadi Naghadeh Hadi; KHODADADI AHMAD; ABDOLLAHY MAHMOUD; pourghahramani Parviz

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Journal: IRANIAN JOURNAL OF MINING ENGINEERING (IRJME) Year:2018 | Volume:13 | Issue:40 Page(s): 77-94

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Title

Effect Of Mechanical Activation On The Structure Of Fluorapatite And Dissolution Of Rare Earth Elements In Esfordi Concentrated Phosphate Of Processing Plant

Author(s)

Shadi Naghadeh Hadi | KHODADADI AHMAD | ABDOLLAHY MAHMOUD | pourghahramani Parviz | Issue Writer Certificate

Keywords

Phosphate concentrateQ1

rare earth elementsQ1

mechanical activationQ1

leachingQ1

Abstract

Esfordi Phosphate concentrate with a total of 1. 2% rare earth elements, is one of the richest sources of REE in Iran. In order to investigate the effect of mechanical activation on dissolution of rare earth elements, planetary ball mill with 20 mm steel balls, with ball to powder ratio of 2: 1 and 15: 1 was used for 90 minutes in dry mode at standard pressure. Due to the high solubility of fluorapatite and low solubility ofREE-containing minerals in nitric acid, a two-stage leaching method was used. The first phase leaching residue, containing more than 99% of the rare earth elements in the initial concentrate, was mechnaicaly reactivated with a ball to powder ratio of 12: 1, then it was leached. Results showed that mechanical activation successfully improved the dissolution of rare earth elements from Phosphate concentrate, from almost 1 percent (for initial concentrate) to 35. 79, 42, and 34. 33 percent for Ce, La, and Nd, respectively.

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APA: Copy

Shadi Naghadeh, Hadi, KHODADADI, AHMAD, ABDOLLAHY, MAHMOUD, & pourghahramani, Parviz. (2018). Effect Of Mechanical Activation On The Structure Of Fluorapatite And Dissolution Of Rare Earth Elements In Esfordi Concentrated Phosphate Of Processing Plant. IRANIAN JOURNAL OF MINING ENGINEERING (IRJME), 13(40 ), 77-94. SID. https://sid.ir/paper/117032/en

Vancouver: Copy

Shadi Naghadeh Hadi, KHODADADI AHMAD, ABDOLLAHY MAHMOUD, pourghahramani Parviz. Effect Of Mechanical Activation On The Structure Of Fluorapatite And Dissolution Of Rare Earth Elements In Esfordi Concentrated Phosphate Of Processing Plant. IRANIAN JOURNAL OF MINING ENGINEERING (IRJME)[Internet]. 2018;13(40 ):77-94. Available from: https://sid.ir/paper/117032/en

IEEE: Copy

Hadi Shadi Naghadeh, AHMAD KHODADADI, MAHMOUD ABDOLLAHY, and Parviz pourghahramani, “Effect Of Mechanical Activation On The Structure Of Fluorapatite And Dissolution Of Rare Earth Elements In Esfordi Concentrated Phosphate Of Processing Plant,” IRANIAN JOURNAL OF MINING ENGINEERING (IRJME), vol. 13, no. 40 , pp. 77–94, 2018, [Online]. Available: https://sid.ir/paper/117032/en

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