Patent ID: 8118905
Filing Date: 2012-02-21
Classification: B01D,B01F,B01J,B22F,B82Y,C22C,H01F,Y10S

Abstract:
1. A method for producing magnetic microparticles, comprising: introducing at least two fluids into a space between a first processing surface and a second processing surface arranged to be opposite to each other so as to be able to approach to and separate from each other, at least one of which rotates relative to the other, wherein at least one of the at least two fluids contains at least one kind of a magnetic raw material, and at least another one of the at least two fluids contains at least one kind of a magnetic microparticles-separating agent; generating a moving force by a fluid pressure in a direction of separating the second processing surface from the first processing surface; maintaining a distance between the first processing surface and the second processing surface in a minute space by the force; forming a thin film fluid by passing the at least two fluids through the space maintained in the minute space between the first processing surface and the second processing surface; and the magnetic raw material reacting with the magnetic microparticles-separating agent in the thin film fluid, whereby magnetic microparticles are separated to obtain the magnetic microparticles.