Method for extracting rare earth elements and rare earth extraction system
A rare earth element and extraction technology, applied in the direction of improving process efficiency, can solve the problems of difficulty in determining the correct position of stratification, manual observation of stratified liquid level, and high initial investment cost, so as to ensure non-emulsification, reduce dosage, and speed up The effect of mass transfer speed
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Embodiment 1
[0022] See figure 1 , the rare earth extraction system of this embodiment includes: an extraction tank 1, a stirring shaft 2 arranged on the central axis of the extraction tank 1 and having a paddle 4 at the bottom, inside the extraction tank 1 and on the A plurality of stirring rings 3 axially distributed on the stirring shaft 2, a plurality of static rings 5 arranged on the inner wall of the extraction tank 1 and distributed with each stirring ring 3; the top of the extraction tank 1 is provided with a The heavy liquid inlet for inputting heavy liquid and the light phase outlet for outputting light phase material liquid, the bottom of extraction tank 1 is provided with the light liquid inlet for inputting light liquid and the heavy phase outlet for outputting heavy phase; A clarification tank 8 is arranged above the extraction tank 1, the light phase outlet of the extraction tank 1 is connected to the bottom of the clarification tank 8, and the top of the clarification tan...
Embodiment 2
[0028] The methods for extracting rare earth elements by the above rare earth extraction system include:
[0029] Input the quantitative aqueous solution or suspension of rare earth elements as heavy liquid into the extraction tank 1 through the heavy liquid inlet on the top of the extraction tank 1 (in practice, it can be viewed through the glass on the top of the extraction tank (1) Observe the liquid level with the mirror, when the liquid level reaches the preset height, stop the feed liquid input;);
[0030] Start the stirring shaft 2; at the same time, heat the extraction tank 1 to keep the feed liquid in the extraction tank 1 at a preset temperature;
[0031]The extraction solvent as a light liquid is evenly entered into the extraction tank 1 from the liquid distributor at the bottom of the extraction tank 1. During the stirring process, the bottom-up stepwise mixing and mass transfer are realized between the light and heavy liquids. The light phase liquid that has comp...
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