A kind of acid-soluble slag backwashing equipment and using method thereof

Abstract

The invention provides an acid-dissolved slag backwashing device and a method for using the same. The structure is novel and comprises a first filter press device, a feeding device, a cleaning tower, a pumping device and a second filter press device arranged in sequence along the feeding path; wherein, The first filter press device press-filters the acid-dissolved slag, collects the filtrate, disperses the filter residue and then sends it to the feeding device; The first confluence pipe is sent to the pumping device, and the pumping device pumps the material to the second filter press device, performs pressure filtration, collects the filtrate, and discharges the filter residue; build a primary filter press-acid-dissolved residue backwash-secondary filter press The mechanical structure matched with the technological process can carry out secondary cleaning of the acid-soluble slag and recover the rare earth raw materials adhering to the surface of the acid-soluble slag; the whole recycling process can be continuously operated, and the space can be fully utilized for multiple simultaneous processing, which is effective Improve recycling efficiency.

Description

technical field [0001] The invention relates to the field of acid-soluble slag treatment, and more particularly, to an acid-soluble slag backwashing device and a method for using the same. Background technique [0002] For the treatment of rare earth raw materials, hydrochloric acid needs to be used for dissolving, and then the dissolving solution is processed; when hydrochloric acid dissolves rare earth raw materials, there will be some substances that cannot be dissolved by hydrochloric acid, resulting in acid-soluble slag, which will entrain some rare earths. The feed liquid affects the yield of rare earth raw materials. If it is directly discharged, it will cause loss of raw materials, waste of resources, and also affect the efficiency of the enterprise. Therefore, it is necessary to process the acid slag to recover rare earth raw materials and reduce waste; [0003] At present, the method of recycling is mainly through backwashing, and backwashing requires a long time o...

AI Technical Summary

Problems solved by technology

[0002] For the treatment of rare earth raw materials, it is necessary to use hydrochloric acid to dissolve, and then process the solution; when hydrochloric acid dissolves rare earth raw materials, there will be some substances that cannot be dissolved by hydrochloric acid, resulting in acid-soluble slag, which will entrain some rare earth Feed liquid affects the yield of rare earth raw materials. If it is discharged directly, it will cause loss of raw materials, waste of resources, and also affect corporate benefits. Therefore, it is necessary to process acid-soluble slag to recycle rare earth raw materials and reduce waste;

[0003] At present, the recycling method is mainly through backwashing, and backwashing requires long-term stirring and cleaning. Due to the lack of special equipment, most of them are processed by large-volume stirring tanks at present, and the working efficiency of a single stirring tank is not high. High, multiple mixing tanks will occupy a large area, which is not realistic; moreover, the use of multiple mixing tanks makes the transfer and transfer of waste residues inconvenient. Therefore, it is necessary to design a special equipment to improve Production Processing Efficiency

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