Method for preparing 6N-grade neodymium chloride through fractional extraction separation process
A neodymium chloride and extraction technology, applied in the preparation/treatment of rare earth metal chlorides, rare earth metal compounds, rare earth metal halides, etc., to achieve the effects of high product purity, good separation effect, and high yield
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Embodiment 1
[0020] The unsupported organic phase is a sulfonated kerosene solution of P507, wherein the concentration of P507 is 1.0 mol / L.
[0021] The rare earth element concentrations in the 4N-grade neodymium chloride aqueous solution of the feed solution are Ce 2.8 mg / L, Pr 5.6 mg / L, Nd 147 g / L, and Sm 4.5 mg / L, respectively.
[0022] CePr / NdSm full-load fractional distillation extraction and separation system: with saponification section The obtained loaded CePrNd organic phase is a rare earth saponified organic phase, and the rare earth saponified organic phase loaded CePrNd organic phase enters the CePr / NdSm full-load fractionation extraction system from the first stage; 4N-grade neodymium chloride aqueous solution is used as the feed liquid, and the feed liquid is 4N-grade chloride The neodymium aqueous solution enters the CePr / NdSm full-load fractional distillation extraction system from the 56th stage (feed stage); the balanced aqueous phase of the Nd / Sm full-load fractional d...
Embodiment 2
[0030] The unsupported organic phase is a sulfonated kerosene solution of P507, wherein the concentration of P507 is 1.0 mol / L.
[0031] The concentrations of rare earth elements in the 4N-grade neodymium chloride aqueous solution of the feed solution were Ce 1.4 mg / L, Pr 4.2 mg / L, Nd 145 g / L, and Sm 3.0 mg / L, respectively.
[0032] CePr / NdSm full-load fractional distillation extraction and separation system: with saponification section The obtained loaded CePrNd organic phase is a rare earth saponified organic phase, and the rare earth saponified organic phase loaded CePrNd organic phase enters the CePr / NdSm full-load fractionation extraction system from the first stage; 4N-grade neodymium chloride aqueous solution is used as the feed liquid, and the feed liquid is 4N-grade chloride The neodymium aqueous solution enters the CePr / NdSm full-load fractional distillation extraction system from the 59th stage (feed stage); the balanced aqueous phase of the Nd / Sm full-load fractio...
Embodiment 3
[0040] The unsupported organic phase is a sulfonated kerosene solution of P507, wherein the concentration of P507 is 1.0 mol / L.
[0041] The rare earth element concentrations in the 4N-grade neodymium chloride aqueous solution of the feed solution were Ce 0.70 mg / L, Pr 2.0 mg / L, Nd 143 g / L, and Sm 1.5 mg / L, respectively.
[0042] CePr / NdSm full-load fractional distillation extraction and separation system: with saponification section The obtained loaded CePrNd organic phase is a rare earth saponified organic phase, and the rare earth saponified organic phase loaded CePrNd organic phase enters the CePr / NdSm full-load fractionation extraction system from the first stage; 4N-grade neodymium chloride aqueous solution is used as the feed liquid, and the feed liquid is 4N-grade chloride The neodymium aqueous solution enters the CePr / NdSm full-load fractionation extraction system from the 62nd stage (feed stage); the balanced aqueous phase of the Nd / Sm full-load fractional distillat...
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