Patent ID: 9492763
Filing Date: 2016-11-15
CPC Classification: B01D,B01J,C04B,C22B

Claim Text:
1. A method for producing a microparticle, comprising the steps of: preparing at least two fluids to be processed, including a first fluid and a second fluid, the first fluid being a raw material fluid containing at least one substance to be separated, and the second fluid being a separating fluid containing at least one substance to separate the substance to be separated; introducing the at least two fluids into a processing device, the processing device comprising at least two processing surfaces facing each other, the at least two processing surfaces being operable to approach to and separate from each other, at least one of the at least two processing surfaces rotating relative to the other; mixing the at least two fluids in a space formed between the at least two processing surfaces, thereby forming a thin film fluid between the at least two processing surfaces; separating the substance to be separated so as to obtain a desired crystallite diameter of the separated substance by changing specific conditions with regard to at least any one of the raw material fluid and the separating fluid that are introduced into between the at least two processing surfaces; and obtaining the separated substance after the step of separating, wherein said specific conditions are: kind of at least any one of said at least one substance to be separated contained in the raw material fluid and said at least one substance contained in the separating fluid, and pH of at least any one of the raw material fluid and the separating fluid, and wherein only the crystallite diameter of the separated substance is changed without changing a particle diameter of the separated substance compared to a substance that has been separated without changing said specific condition.