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Process for separating superfine particles

A technology of ultrafine particles and processes, applied in separation methods, chemical instruments and methods, solvent extraction, etc., can solve the problems of poor drug specificity, low grade and recovery rate, large dosage, etc., achieve mild working conditions, easy to scale up, Energy Saving Effect

Active Publication Date: 2007-07-11
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of the existing ultrafine particle separation method, such as high separation difficulty, poor specificity and large dosage of medicament, low flotation grade and recovery rate, etc., and proposes a process for separating ultrafine particles using a two-phase aqueous system

Method used

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  • Process for separating superfine particles
  • Process for separating superfine particles
  • Process for separating superfine particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034]Add 10mL PEG4000 with a mass fraction of 7.81% and Dextran20000 solution with a mass fraction of 14.06 to a 10mL test tube, then add 0.01g Ps, and place it in an ultrasonic cleaner and shake for 0.5h to make it evenly dispersed in the system. After the separation of the two phases is clear, it is obvious that Ps is evenly dispersed into the PEG-rich upper phase to form a relatively stable system, showing a certain degree of turbidity. Separate the two phases and centrifuge to obtain Ps.

Embodiment 2

[0036] According to the method of Example 1, but adding 0.01g PsMimCl, after the two phases are separated clearly, it is clearly observed that PsMimCl is uniformly dispersed into the Dextran-rich lower phase to form a relatively stable system, showing a certain degree of turbidity. Separate the two phases and centrifuge to obtain PsMimCl.

Embodiment 3

[0038] According to the method of Example 1, but adding a mixture of 0.01g Ps and PsMimCl, after the two phases are separated clearly, it is obvious that Ps is evenly dispersed into the PEG-rich upper phase, and PsMimCl is evenly dispersed to the Dextran-rich lower phase. A relatively stable system is formed, showing a certain degree of turbidity. Separate the two phases and centrifuge to obtain pure PsMimCl.

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Abstract

The invention relates to a method for separating ultra-fine particles, wherein it adjusts the components of dual-liquid system, or adds extractive to adjust the system which can separate ultra-fine particles into upper phase or lower phase; eccentrically treating two phases to obtain ultra-fine particles. And the inventive system can be repeated used. The invention has simple device and low cost.

Description

Technical field [0001] The invention relates to a process for separating ultrafine particles. Background technique [0002] Ultrafine particles have small mass, low momentum, large specific surface energy, and strong adsorption. They are easy to form flocculation or agglomeration with other ultrafine particles during separation. Therefore, traditional solid particle separation techniques such as gravity separation, magnetic separation, and physical flotation are used. Separation, chemical flotation and other methods are difficult to separate, the specificity of the reagent is poor and the dosage is large, and the flotation grade and recovery rate are low. This is a common problem in the separation and enrichment of fine particles. [0003] The traditional two-phase aqueous system refers to a system in which polyethylene glycol (PEG) and another polymer or salt exceed a certain critical concentration in an aqueous solution, and the upper and lower aqueous phases are formed. There ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D11/00
Inventor 陈继邓岳锋张冬丽
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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