Efficient rare earth metal purification device

Abstract

The invention discloses an efficient rare earth metal purification device, and belongs to the technical field of rare earth extraction. According to the efficient rare earth metal purification device, rare earth metal and metal impurities capable of being magnetically attracted in a rare earth raw material are adsorbed through an electromagnet belt, so that other impurities are removed. Meanwhile, since the electromagnet belt moves along with a first conveying belt and is different from an existing plate-shaped electromagnet, the adsorption area of the rare earth metal below can be increased, and the adsorption effect is better. Then, metal impurities with higher vapor pressure than the rare earth metal are removed through distillation. Through cooperative use of distillation and a magnetic separation method, the problem that impurity elements with the vapor pressure similar to that of the rare earth metal cannot be removed through distillation can be avoided, and the purification effect is good. A second conveying belt can be driven to vibrate in a reciprocating mode through a vibrating mechanism, then the rare earth raw material on the second conveying belt can be continuously shaken up, the rare earth raw material can be prevented from being accumulated, the rare earth metal can be prevented from being covered by other impurities, and the purification effect is improved.

Description

Technical field [0001] The present invention relates to the field of rare earth extraction, and more particularly to a rare earth metal efficient purification device. Background technique [0002] Rare earth is a general term for lanthanide and 钪,,,,,. There are 250 rare earth mines in nature. Because the rare earth minerals found in the 18th century, only chemical laws can only be used in small amounts of water-insoluble oxides in the chemical law, and this oxide is used to "soil" in history, and the rare earth is obtained. Rare earth has a "gold" of the industrial "gold", due to its physical properties such as photomagnetic, the most significant function of the variety of new materials, the most significant function is to significantly improve the quality and performance of other products. . For example, the tactical properties of steel, aluminum alloy, magnesium alloys, titanium alloys used in the manufacture of tanks, aircraft, missiles, titanium alloys. [0003] Rare earth m...

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Problems solved by technology

[0004] When purifying terbium, dysprosium, holmium, and erbium in rare earth metals, it generally includes vacuum distillation, vacuum smelting, molten salt extraction, magnetic separation, etc., but the most widely used methods are vacuum distillation and magnetic separation. , but at present, the purification effect of simple distillation is not good, and at the same time, those impurity elements whose vapor pressure is similar to that of rare earth metals cannot be removed, and there are more impurities in the rare earth after purification; Metals with similar magnetic properties are removed, and the purity after purification is not high enough, and the existing magnetic separation method generally uses a plate-shaped fixed electromagnet to adsorb rare earth metals, the contact area is limited and it is easy to block the adsorption of rare earths below; there are also existing rare earths It is easy to be covered by impurities such as other minerals during the process, resulting in inability to adsorb, which greatly affects the purification effect of rare earths

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