Process for separating superfine particles

A technology of ultra-fine particles and processes, applied in separation methods, chemical instruments and methods, solvent extraction, etc., can solve the problems of poor specificity of pharmaceuticals, low grade and recovery rate, large dosage, etc., and achieve mild working conditions, easy to scale up, Energy saving effect

Active Publication Date: 2009-03-25
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 of PEG4000 with a mass fraction of 7.81% and Dextran20000 with a mass fraction of 14.06 to a 10mL test tube, then add 0.01g of Ps, place in an ultrasonic cleaner and vibrate 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 uniformly dispersed in the PEG-rich upper phase, forming a relatively stable system, showing a certain turbidity. The two phases were separated and centrifuged to obtain Ps.

Embodiment 2

[0036] According to the method of Example 1, but adding 0.01g of PsMimCl, after the two phases were separated, it was clearly observed that: PsMimCl was uniformly dispersed into the Dextran-rich lower phase, forming a relatively stable system, showing a certain turbidity. The two phases were separated and centrifuged 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 clearly separated, it is clearly observed that: Ps is uniformly dispersed into the PEG-rich upper phase, and PsMimCl is uniformly dispersed into the Dextran-rich lower phase, A relatively stable system is formed, showing a certain turbidity. The two phases were separated and centrifuged 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 are easy to form flocculation or agglomeration with other ultrafine particles due to their small mass, low momentum, large specific surface energy, and strong adsorption 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 reagents is poor and the dosage is large, and the grade and recovery rate of flotation are low. This is a common problem in the separation and enrichment of fine particles at present. [0003] The traditional aqueous two-phase system refers to a system in which polyethylene glycol (Polyethylene Glycol, PEG) and another polymer or salt exceed a certain critical concentration in an aqueous solution to form an upper an...

Claims

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Application Information

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Patent Type & Authority Patents(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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