METHOD OF PRODUCING POWDER MATERIALS

A method is provided for obtaining fine powders having narrow particle size range from non-conducting solids comprising the steps of: 1) creating an electrostatic charge on particles of a solid mixture formed by mechanical means, 2) grinding the mixture and neutralizing the electrostatic charge duri...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	GLOUKHAREV, NIKOLAI FEDOROVICH, MOROZOV, VYACHESLAV SERGEEVICH, ZAROGATSKY, LEONID PETROVICH, LEVINSON, VALERY GRIGORIEVICH
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE CRUSHING, PULVERISING, OR DISINTEGRATING CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL LIME, MAGNESIA MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS METALLURGY MILLING GRAIN PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PREPARATORY TREATMENT OF GRAIN FOR MILLING REFRACTORIES 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 SLAG THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	A method is provided for obtaining fine powders having narrow particle size range from non-conducting solids comprising the steps of: 1) creating an electrostatic charge on particles of a solid mixture formed by mechanical means, 2) grinding the mixture and neutralizing the electrostatic charge during grinding with a potential sufficient to create a corona discharge, 3) separating the powder according to particle size, and 4) collecting the finely ground finished powder product. The method is applicable to the manufacture of high quality cement powders.