Calcium saponified organic phase clarification and extraction process and equipment thereof

Abstract

The invention belongs to the technical field of rare earth extraction and separation, and discloses a calcium saponified organic phase clarification and extraction process and equipment thereof. The calcium saponified organic phase clarification and extraction process comprises the following steps of preparing lime milk slurry through a plurality of preparation barrels; conducting single-stage stirring on a blank organic phase from a reverse extraction section and rare earth soap waste water, fully mixing, and conducting oil-water separation through a clarification oil separation tank to obtain the washed blank organic phase and the deoiled rare earth soap waste water; conducting calcium saponification on the washed blank organic phase to obtain a calcium saponified organic phase; conducting clarification and extraction on the calcium saponified organic phase to obtain a calcium saponified extraction agent, a water phase and an insoluble substance; and conducting a rare earth soap replacement reaction on the calcium saponified extraction agent and a rare earth soap material to obtain a saturated organic phase containing rare earth ions and high-concentration chlorinated lime milk slurry. The invention aims to treat a large amount of three phases generated in a calcium saponified extraction process, and simplifies the operation process flow of the three-phase treatment, so as to obtain the rare earth saturated organic phase.

Description

technical field [0001] The invention relates to the technical field of rare earth extraction and separation, in particular to a calcium saponification organic phase clarification extraction process. Background technique [0002] Since the iron slag discharged from the waste also contains a small amount of rare earth, the purpose of the present invention is to extract the rare earth in the iron slag through organic enrichment. Usually, the extraction and separation of rare earths uses acidic extractants, and the extraction process is carried out under low acidity conditions. Generally, to extract one rare earth ion, three H+s need to be replaced into the water phase. As the extraction process continues, the concentration of H+ in the water phase will decrease. As the concentration increases, the ability of the extractant to extract rare earths continues to decline, making the extraction process unstable. [0003] As we all know, the existing rare earth enrichment and extract...

AI Technical Summary

Problems solved by technology

The process is relatively complicated, and manual operation is difficult. Therefore, in view of the above problems, the present invention has developed an extraction process that is simple and can improve the difficulty of employees' work.

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