Extraction device for separating rare earth elements

Abstract

The invention discloses an extraction device for separating rare earth elements. The extraction device includes a motor, a mixing and conveying pipe, a mixing and conveying shaft, a liquid inlet pipeI, a valve I, a liquid inlet pipe II, a valve II and the like; the motor is fixed to the left end of the mixing and conveying pipe, an output shaft of the motor stretches into the mixing and conveyingpipe and is connected with the mixing and conveying shaft, helical mixing blades are arranged on the mixing and conveying shaft, the left side of the mixing and conveying pipe is connected with the liquid inlet pipe I and the liquid inlet pipe II separately, the valve I is arranged on the liquid inlet pipe I, and the valve II is arranged on the liquid inlet pipe II. The extraction device for separating the rare earth elements is simple in structure, high in practicability and low in operation cost; when rare earth ions are separated through the extraction device, extraction time can be accurately controlled on the basis of fully ensuring that two phases are mixed uniformly, therefore, the extraction efficiency and the separation efficiency are improved to the maximum degree, and then different rare earth ions are efficiently separated.

Description

technical field [0001] The invention relates to an extraction device, in particular to an extraction device for separating rare earth elements. Background technique [0002] Rare earth elements are known as "industrial vitamins" and have become an extremely important strategic resource. Rare earth elements refer to 15 lanthanide elements with atomic numbers from 57 to 71 in the periodic table of elements, and lanthanide elements with similar chemical properties. There are 17 elements including scandium and yttrium. Rare earth elements have been widely used in petroleum, chemical industry, metallurgy, textile, ceramics, glass, permanent magnet materials and other fields. With the advancement of science and technology and continuous breakthroughs in application technology, rare earth elements and The value of its oxide will increase. [0003] At present, the separation of different rare earth ions is usually achieved by extraction, but the properties of various rare earth ion...

AI Technical Summary

Problems solved by technology

The mixing and settling tank is currently the most commonly used equipment for the extraction and separation of rare earth ions. The working principle of this equipment is to perform forced mixing through the mixing paddle in the mixing tank, so that the extraction agent and each rare earth ion can fully undergo the extraction reaction, and in the clarification The two-phase separation is carried out in the single-stage mixing tank; since the extraction agent and each rare earth element have undergone sufficient extraction reactions in the single-stage mixing tank, the separation efficiency of the single-stage is very low, and it is generally necessary to use multi-stage cascade extraction to operate

This makes the device structure of the current overall operation bloated and the operating cost is high. At the same time, it is difficult to improve the extraction efficiency due to the inability to accurately control the extraction time. Combining the above reasons, the overall separation effect between different rare earth elements is not good.

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