A kind of rare earth saponification method of acidic phosphorus extractant p204
A saponification and rare earth technology, applied in the field of rare earth solvent extraction, can solve the problems of increasing the production cost of rare earth separation, increasing the complexity of the separation process, prolonging the length of the rare earth separation production process, etc., and achieving the effects of saving energy, reducing production costs, and improving purity
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Embodiment 1
[0016] Control the molar ratio of rare earth chloride to P204 to be 0.12:1, the ratio of the total exchange moles of chloride ions (i.e. the total exchange capacity) of hydroxide type weakly basic styrene-based anion exchange resin to the moles of rare earth chloride 6:1; in a 1000L saponification reactor, add 500L of P204 sulfonated kerosene solution with a concentration of 1.0M, 60L of a rare earth chloride aqueous solution with a pH of 3 and a rare earth concentration of 1.0M, and the effective exchange capacity for chloride ions is 4mol / kg and average particle diameter are 90kg (dry weight) of hydroxide type weakly basic styrene-based anion exchange resin of 0.5mm. After fully stirring at room temperature for 30 min, the layers were separated. The upper layer is the rare earth saponified P204 organic phase, the middle layer is the water phase, and the lower layer is the solid weakly basic styrene anion exchange resin phase; the water phase and the weakly basic styrene ani...
Embodiment 2
[0018] Control the molar ratio of rare earth chloride to P204 to be 0.15:1, and the ratio of the total exchange moles of chloride ions (that is, the total exchange capacity) of the hydroxide-type weakly basic styrene-based anion exchange resin to the moles of rare earth chloride 7.5:1; in the 1000L saponification reactor, add 500L of P204 kerosene solution with a concentration of 0.5M, 75L of rare earth chloride aqueous solution with a pH of 4 and a rare earth concentration of 0.5M, and the effective exchange capacity for chloride ions is 3mol / kg and 93.75 kg (dry weight) of hydroxide-type weakly basic styrene-based anion exchange resin with an average particle diameter of 0.6 mm; after fully stirring at room temperature for 40 min, leave to stand and separate. The upper layer is the rare earth saponified P204 organic phase, the middle layer is the water phase, and the lower layer is the solid weakly basic styrene anion exchange resin phase; the water phase and the weakly basic...
Embodiment 3
[0020] Control the molar ratio of rare earth chloride to P204 to be 0.1:1, and the ratio of the total exchange moles of chloride ions (that is, the total exchange capacity) of the hydroxide-type weakly basic styrene-based anion exchange resin to the moles of rare earth chloride 4.5:1; in a 1000L saponification reactor, sequentially add 500L of P204 kerosene solution with a concentration of 1.5M, 50L of a rare earth chloride aqueous solution with a pH of 2 and a rare earth concentration of 1.5M, and the effective exchange capacity for chloride ions is 5mol / kg and 67.5 kg (dry weight) of hydroxide-type weakly basic styrene-based anion exchange resin with an average particle size of 0.4 mm; after fully stirring at room temperature for 20 min, stand to separate into layers. The upper layer is the rare earth saponified P204 organic phase, the middle layer is the water phase, and the lower layer is the solid weakly basic styrene anion exchange resin phase; the water phase and the we...
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