WET MILLING METHOD FOR HEAVY CALCIUM CARBONATE

PROBLEM TO BE SOLVED: To provide a wet milling method for heavy calcium carbonate in which high efficiency can be obtained and fine setting of the particle size of a product is possible by using a circulation type wet medium stirring mill provided with a motor having a relatively small capacity.SOLU...

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Bibliographic Details
Main Authors ISHIKAWA TSUYOSHI, ISHII TOSHIHIRO, ICHIHARA SUKIO
Format Patent
LanguageEnglish
Published 17.11.2011
Subjects
CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
CRUSHING, PULVERISING, OR DISINTEGRATING
CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL
IMPREGNATING OR COATING OF PAPER
INORGANIC CHEMISTRY
METALLURGY
MILLING GRAIN
PAPER NOT OTHERWISE PROVIDED FOR
PAPER-MAKING
PERFORMING OPERATIONS
PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D
PREPARATORY TREATMENT OF GRAIN FOR MILLING
PRODUCTION OF CELLULOSE
PULP COMPOSITIONS
TEXTILES
TRANSPORTING
TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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Summary:PROBLEM TO BE SOLVED: To provide a wet milling method for heavy calcium carbonate in which high efficiency can be obtained and fine setting of the particle size of a product is possible by using a circulation type wet medium stirring mill provided with a motor having a relatively small capacity.SOLUTION: In the milling method of heavy calcium carbonate including milling heavy calcium carbonate particles in a raw material slurry prepared by dispersing the heavy calcium carbonate particles in a dispersion medium with the circulation type wet medium stirring mill, the number of revolutions of a motor for rotating a stirring member of the medium stirring mill is controlled so that the power of a motor of the medium stirring mill is kept constant.
Bibliography:Application Number: JP20100101665