A process for co-producing high-purity lanthanum and high-purity yttrium
A process method and high-purity technology, applied in the field of co-production of high-purity lanthanum and high-purity yttrium, to achieve the effects of high greenness, improved stability, and reduced alkali consumption
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Embodiment 1
[0034] The saponified C272 organic phase is 30% by volume of C272 in the kerosene solution of the extractant C272, and the saponification rate is 36%.
[0035] The pH of the 1N grade lanthanum chloride solution is 3, and the concentrations of magnesium, calcium and rare earth elements are: Mg 0.30g / L, Ca 1.0g / L, La 120.0g / L, Ce 9.0g / L, Pr 0.20g / L , Nd 0.080g / L.
[0036] The pH of 1N-grade yttrium chloride is 3, and the concentrations of rare earth elements are: La 3.0g / L, Ce 1.0g / L, Pr 0.30g / L, Nd 0.10g / L, Y 85.0g / L, Er 0.050g / L L, Tm 0.010g / L.
[0037] Step 1, Fractional distillation and extraction to separate MgCaLa / LaCePrNd:
[0038] The saponified C272 organic phase is used as the extraction organic phase, the 1N grade lanthanum chloride solution is used as the first feed solution, and 3.0mol / L HCl is used as the washing acid. The saponified C272 organic phase enters the MgCaLa / LaCePrNd fractional extraction system from the first stage, the first feed liquid enters the ...
Embodiment 2
[0053] The saponified C272 organic phase is 30% by volume of C272 in the kerosene solution of the extractant C272, and the saponification rate is 36%.
[0054] The pH of 1N-grade lanthanum chloride solution is 4, and the concentrations of magnesium, calcium and rare earth elements are: Mg 0.50g / L, Ca 2.0g / L, La 110.0g / L, Ce 12.0g / L, Pr 0.30g / L , Nd 0.10g / L.
[0055] The pH of 1N-grade yttrium chloride is 4, and the concentrations of rare earth elements are: La 10.0g / L, Ce 2.0g / L, Pr 0.50g / L, Nd 0.20g / L, Y 80.0g / L, Er 0.10g / L L, Tm 0.050g / L.
[0056] Step 1, Fractional distillation and extraction to separate MgCaLa / LaCePrNd:
[0057] The saponified C272 organic phase is used as the extraction organic phase, the 1N grade lanthanum chloride solution is used as the first feed solution, and 3.0mol / L HCl is used as the washing acid. The saponified C272 organic phase enters the MgCaLa / LaCePrNd fractional distillation extraction system from the first stage, the first feed liquid en...
Embodiment 3
[0072] The saponified C272 organic phase is 30% by volume of C272 in the kerosene solution of the extractant C272, and the saponification rate is 36%.
[0073] The pH of 1N-grade lanthanum chloride solution is 2, and the concentrations of magnesium, calcium and rare earth elements are: Mg 0.10g / L, Ca 0.50g / L, La 130.0g / L, Ce 6.0g / L, Pr 0.10g / L , Nd 0.050g / L.
[0074] The pH of 1N-grade yttrium chloride is 2, and the concentrations of rare earth elements are: La 1.0g / L, Ce 0.50g / L, Pr 0.10g / L, Nd 0.050g / L, Y 90.0g / L, Er 0.010g / L L, Tm 0.0050g / L.
[0075] Step 1, Fractional distillation and extraction to separate MgCaLa / LaCePrNd:
[0076]The saponified C272 organic phase is used as the extraction organic phase, the 1N grade lanthanum chloride solution is used as the first feed solution, and 3.0mol / L HCl is used as the washing acid. The saponified C272 organic phase enters the MgCaLa / LaCePrNd fractional extraction system from the first stage, the first feed liquid enters the M...
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