APPARATUS AND METHOD FOR PRODUCING MICRONIZED LIMESTONE POWDER

Title:

APPARATUS AND METHOD FOR PRODUCING MICRONIZED LIMESTONE POWDER

Document Type and Number:

Japanese Patent JP2010001211

Kind Code:

A

Abstract:

To provide an apparatus and a method for producing micronized limestone powders to produce limestone micronized powders with a finer grain size from limestone improved in whiteness by way of a flotation process, by utilizing a wet crushing apparatus and a wet classifying apparatus.

This method for producing micronized limestone powders comprises: a step of floating and sorting limestone; a step of forming the limestone into a powder; a step of forming the powder into slurry in a slurry tank, and then into pulverized matter utilizing a crusher; and a step of classifying the pulverized matter into a fine powder and coarse powder utilizing a classifier. This apparatus for producing micronized limestone powders comprises: the slurry tank 130 for forming and storing the pulverized limestone in a slurry form; a pulverizer 140 for pulverizing the limestone slurry fed from the slurry tank linked thereto; and a wet classifying apparatus 170 for classifying the pulverized limestone pulverized in the pulverizer.

Inventors:

CHO SUNG BAEK
LEE SU JEONG
KIN SOBAI
CHO KEON JOON
JANG HEE DONG

Application Number:

JP2009145393A

Publication Date:

January 07, 2010

Filing Date:

June 18, 2009

Export Citation:

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Assignee:

KOREA INST OF GEOSCIENCE & MIN

International Classes:

C01F11/18; B02C21/00; B02C23/14; B03B5/00; B03D1/02

Domestic Patent References:

JPH01104359A	1989-04-21
JPS54101799A	1979-08-10

Foreign References:

US4793985A

1988-12-27

Attorney, Agent or Firm:

Aniya Setsuo
Toru Yui
Hitoshi Kiyono
Fukuoka Masahiro

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