Extraction and back-extraction device

Abstract

The invention relates to an extraction and back-extraction device which is formed by connecting a mixer and a separator, wherein the mixer consists of a lower mixing cavity and an upper centrifugal cavity, and a central rotating shaft where an impeller is mounted on is mounted in mixing cavity and the centrifugal cavity by penetration; the separator consists of an upper part, a middle part and a lower part, the upper part is an organic phase chamber, the lower part is a water phase chamber, and the middle part is a centrifugal separation chamber for an organic phase and a water phase; the organic phase and the water phase respectively enter into the mixing cavity from the lower part of the mixer, the stirring and the mixing are carried out for 10s-3min, the formed mixed solution is sent to the centrifugal separation chamber at the middle part of the separator from a liquid outlet of the centrifugal cavity at the upper part of the mixer, the centrifugal separation chamber rotates for 50s-5min along with the rotating shaft, thereby accelerating the separation of the organic phase and the water phase; the organic phase with smaller specific gravity enters into the organic phase chamber at the upper part, and the water phase with bigger specific gravity and suspended solids contained therein or a solid phase enter into the water phase chamber at the lower part; and the extraction and back-extraction device can process solution containing the suspended solids or the solid phase, the solid phase and the water phase can be discharged together, and the solid phase can not affect the normal operation of the device.

Description

technical field [0001] The invention belongs to an extraction and stripping equipment for separating valuable components from solutions in industries such as metallurgy, chemical industry, uranium industry, medicine and food. Background technique [0002] Extraction and stripping have been widely used as methods for separating and enriching elements or valuable components from solutions with low elements or valuable components in metallurgy and chemical industry. Extraction and stripping equipment include mixing clarifiers and extraction columns, as well as agitated extraction columns and centrifugal extractors that have been researched and developed in recent years. [0003] Extraction and stripping equipment is divided into two categories: graded and differential. In addition to fractional and differential, extraction equipment can be further subdivided into non-agitated and agitated by the method used to mix two phases and create countercurrent. Countercurrent different...

AI Technical Summary

Problems solved by technology

If these solids are not removed, they may accumulate in the equipment, causing unbalanced rotor movement; stage efficiency is low due to short mixing time; centrifugal extractors are expensive and expensive to maintain

[0011] In summary, the existing extraction equipment or organic phase consumes a large amount, occupies a large area, the organic phase volatilizes greatly, is unsafe or has low stage efficiency, and the equipment has a complex structure and cannot handle solutions containing suspended matter (solid phase). Developed a new type of extraction and stripping equipment to solve the shortcomings of existing extraction and stripping equipment

Images