Method for two-in and three-out fractional extraction and group separation of europium-rich middle yttrium ore
An extraction and exporting technology is applied in the field of a method for separating yttrium-rich europium ore into groups, which can solve the problem of high acid-base consumption, and achieve the effects of improving the degree of greening and reducing the volume.
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[0022] Example 1:
[0023] 1) Rare earth material liquid
[0024] The first medium yttrium-rich europium ore solution of rare earth chloride, its rare earth concentration is 1.0 M, pH is 3; in terms of rare earth elements, the mole fraction of light rare earth elements La~Nd is 0.55, and the mole fraction of Sm~Dy is 0.15 , The mole fraction of Ho~Lu and Y is 0.30.
[0025] The second yttrium-rich europium ore rare earth chloride aqueous solution has a rare earth concentration of 1.0 M and a pH of 2; in terms of rare earth elements, the mole fraction of light rare earth elements La~Nd is 0.55, and the mole fraction of Sm~Dy is 0.15 , The mole fraction of Ho~Lu and Y is 0.30.
[0026] Based on the molar ratio of rare earth ions, the feed ratio of the first rare earth feed liquid to the second rare earth feed liquid is 3:1.
[0027] 2) Organic phase
[0028] The organic phase is the kerosene solution of P507, the volume percentage concentration of P507 is 35%; the light rare earth La~Nd ...
Example Embodiment
[0038] Example 2:
[0039] 1) Rare earth material liquid
[0040] The first medium yttrium europium-rich rare earth chloride aqueous solution has a rare earth concentration of 1.5 M and a pH of 5; in terms of rare earth elements, the mole fraction of light rare earth elements La~Nd is 0.55, and the mole fraction of Sm~Dy is 0.15 , The mole fraction of Ho~Lu and Y is 0.30.
[0041] The second medium yttrium-rich europium ore rare earth chloride aqueous solution has a rare earth concentration of 0.5 M and a pH of 1; in terms of rare earth elements, the mole fraction of light rare earth elements La~Nd is 0.50, and the mole fraction of Sm~Dy is 0.15 , The mole fraction of Ho~Lu and Y is 0.35.
[0042] Based on the molar ratio of rare earth ions, the feed ratio of the first rare earth feed liquid to the second rare earth feed liquid is 2:1.
[0043] 2) Organic phase
[0044] The sulfonated kerosene solution of organic phase P507, the volume percentage concentration of P507 is 30%; the light...
Example Embodiment
[0054] Example 3:
[0055] 1) Rare earth material liquid
[0056] The first medium yttrium-rich europium ore solution of rare earth chloride, its rare earth concentration is 0.5 M, pH value is 4; in terms of rare earth elements, the mole fraction of light rare earth elements La~Nd is 0.60, and the mole fraction of Sm~Dy is 0.15 , The mole fraction of Ho~Lu and Y is 0.25.
[0057] The second medium yttrium-rich europium ore rare earth chloride aqueous solution has a rare earth concentration of 1.5 M and a pH of 2; in terms of rare earth elements, the mole fraction of light rare earth elements La~Nd is 0.55, and the mole fraction of Sm~Dy is 0.15 , The mole fraction of Ho~Lu and Y is 0.30.
[0058] Based on the molar ratio of rare earth ions, the feed ratio of the first rare earth feed liquid to the second rare earth feed liquid is 1:1.
[0059] 2) Organic phase
[0060] The organic phase is a kerosene solution of P507, the volume percentage concentration of P507 is 45%; the light rare e...
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