POWDER CLASSIFYING METHOD AND CLASSIFIED PARTICLE

PROBLEM TO BE SOLVED: To provide a precise classifying method using an electroformed screen classifying a powder without clogging the screen and the agglomeration of particles and also provide particles classified by the method and also its use. SOLUTION: In the classifying method, a dispersed body...

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Bibliographische Detailangaben
Hauptverfasser:	HAGEN DAIKI, WAKATSUKI SHINJI, FUJISAWA NOBUHIKO, TORIBUCHI HIRONOBU, SASAKI NORIKUNI, KURAMOTO SHIGEFUMI
Format:	Patent
Sprache:	eng
Schlagworte:	MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS PERFORMING OPERATIONS SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a precise classifying method using an electroformed screen classifying a powder without clogging the screen and the agglomeration of particles and also provide particles classified by the method and also its use. SOLUTION: In the classifying method, a dispersed body formed of a raw material powder dispersed into a liquid medium is passed through a classifying device with the electroformed screen to classify the raw material powder into particles of desired particle size range, and (1) the density of the raw material powder is set at 0.01-50 wt.%, (2) the density of the particles in the dispersed body in the classifying device is set at 0.01-50 wt.%, (3) as the liquid medium, the medium of viscosity of 50 cP or less is used, (4) the temperature of the liquid medium and/or the dispersed body during the classification is set at 0-100 deg.C, (5) at least a part of the dispersed body in the classifying device is made to flow and (6) the liquid amount in the classifying device during the classification is kept to a given level.