Ultrasonic leaching-extracting separation method for sulphating roasting rare earth mine

Abstract

The invention discloses an ultrasonic leaching-extracting separating method of rare earth ore sintered by sulfuric acid, which comprises the following steps: adopting sulfuric acid solution as leaching liquid; allocating extracting liquid through P204, P507 and kerosene; proceeding leaching-extracting separating operation for rare earth ore through ultrasound with strength at 0.2-20.0W / cm2 and frequency at 19-80kHz under 5-60 deg.c; obtaining the enriched product of middle heavy rare earth (yttrium group rare earth element) sulfate as extracting phase and light rare earth (cerium group rare earth element) sulfate as residual phase.

Description

Technical field:

[0001] The invention relates to a method for separating rare earth ores roasted with sulfuric acid, and belongs to the field of hydrometallurgy. Background technique:

[0002] Bastnaesite, bastnaesite, monazite and its mixed rare earth ores are raw materials for the production of sulfuric acid roasted rare earth ores. At present, the usual separation method of sulfuric acid roasted rare earth ores is: sulfuric acid roasting of rare earth ores-rare earth leaching-solvent extraction, which is It is a mature and stable process route in the current industrial production of rare earth separation. The process uses the above-mentioned rare earth ore and sulfuric acid as raw materials. After roasting, the rare earth is converted into water-soluble sulfate, and then water is used as a solvent for leaching. After neutralization and impurity removal, the resulting leachate is extracted and separated. Get rare earth products. In this process, the current leaching oper...

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