Technology for separating rare earth element by extraction system added with modifier
A rare earth element and improver technology is applied in the field of phosphorus extraction system to separate and purify rare earth elements.
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Embodiment 1
[0011] The experimental temperature is 10~35℃, compared with the condition of 1:1, the acidity of the water phase is fixed, the chlorinated or nitrated rare earth is used as the feed solution, and the pH of the feed solution is less than 6.0; P507 is used as the extractant, and the ratio of ROH added is changed. According to the physical phenomenon Good, high extraction efficiency, high selectivity requirements, determine the adding ratio of ROH, that is, the ratio of adding alcohol is 1%-50% (volume percentage), and the optimal ratio is 10%-30%.
Embodiment 2
[0013] Additives
[0014] 30%
Embodiment 3
[0016] The extraction temperature is 25+-1℃, the acidity of the water phase is fixed, and the rare earth chloride YbCl is selected 3 , compared with 1:1, using P507 as the extractant, C P507 =1.5M, add different proportions of methyl heptanol as the extraction system, after the extraction is saturated, use 1-6HCl to compare the 2:1 back-extraction compound to determine the back-extraction acidity;
[0017]
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Abstract
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