Method for extracting and separating high-purity yttrium from naphthenic acids in high stability

Abstract

The invention relates to a method for extracting and separating high-purity yttrium from naphthenic acids in high stability, which still can guarantee a suitable phase ratio in a mixing chamber to guarantee the mixing chamber to be a sticky state when oil and water phases are extremely large or have severe fluctuation during the process that the high-purity yttrium is extracted and separated form the naphthenic acids, thereby enabling mixing phases to be rapidly clarified and separated in a clarifying chamber. The method for exacting and separating high-purity yttrium from naphthenic acids in high stability is simple in process, can rapidly and steadily adjust the phase radio of the naphthenic acids for extracting and separating the high-purity yttrium in the mixing chamber by adopting simple operation steps, rapidly builds a mixing chamber sticky system again, guarantees the clarifying chamber to normally separate phases, is simple in operation and excellent in stability, reduces technical requirements to operators, and is beneficial for stable production of enterprises.

Description

technical field [0001] The invention belongs to the technical field of hydrometallurgy, and in particular relates to a method for extracting and separating high-purity yttrium with highly stable naphthenic acid. Background technique [0002] The naphthenic acid-mixed alcohol-kerosene extraction system can obtain high-purity yttrium in one step without extraction grouping. The process has the advantages of wide sources of extractant, low production cost, simple process, high product purity and high yield, and has now formed a large-scale production process line. [0003] However, the naphthenic acid-mixed alcohol-kerosene extraction system has an important disadvantage in production practice: the mixing chamber needs to be kept sticky to ensure normal phase separation in the clarification chamber. The mixing chamber is sticky and needs to maintain a high ratio from the beginning of operation (minimum ratio V water: V oil = 0.1), and when the flow ratio is too low, it will ca...

AI Technical Summary

Problems solved by technology

When the flow fluctuates, if the organic flow rate is too large, it will easily cause the destruction of the sticky state of the mixing chamber. Therefore, the clarifier is unstable at the beginning of operation. When it is too low to be unqualified, the method of material reduction cannot be used to quickly improve the product purity