A kind of rare earth metal waste gas treatment method

Abstract

The invention belongs to the technical field of industrial waste gas treatment, and specifically relates to a rare earth metal waste gas treatment method. The method uses a separation device, and the separation device includes a box body, a water inlet pipe, a drain pipe, a drying box and a screening module; One end of the elastic screen of the module is fixedly connected to the inner wall of the box, and the other end of the elastic screen is fixedly connected to the outer ring of the rotating roller. The other end is guided by the guide roller and fixedly connected to the side of the swing rod. The upper end of the swing rod is hinged at the bottom of the top plate of the box body. The lower end of the swing rod is provided with a chute, and the first scraper is slidably installed in the chute. The invention can recycle the rare earth particles in the exhaust gas. By setting the screening module, the rotating roller of the screening module turns to turn out the rare earth particles in the trough of the elastic screen, and after being dried by the heating plate, it falls into the collection box. Within, the separation and recovery of rare earth particles can be completed, which can improve the recovery efficiency of rare earth particles.

Description

technical field [0001] The invention belongs to the technical field of industrial waste gas treatment, in particular to a rare earth metal waste gas treatment method. Background technique [0002] Rare earths are known as "industrial vitamins". Now it has become an extremely important strategic resource. Rare earth element oxides refer to oxides of 15 lanthanide elements with atomic numbers from 57 to 71 in the periodic table of elements, and oxides of scandium and yttrium, a total of 17 elements whose chemical properties are similar to lanthanide elements. 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, the value of rare earth oxides will increase. [0003] The rare earth electrolysis process is a process in which rare earth metal fluoride (REF) molten salt is us...

AI Technical Summary

Problems solved by technology

[0005] This technical solution separates the rare earth particles in the waste water by vibrating the filter screen, and the rare earth particles attached to the filter screen are not easy to recover. This solution does not have a device for centralized recovery of the separated rare earth particles, which makes the separation and recovery efficiency of this solution low.

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