Title:
球状炭酸カルシウム粒子及びその製造法
Document Type and Number:
Japanese Patent JP6656969
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a spherical conductive calcium carbonate uniform in conductive performance and strong to physical shock.SOLUTION: Provided is a spherical calcium carbonate particle in which, in the production process of calcium carbonate, carbon is uniformly introduced into the inside of the particle thereof, where the average circularity is 0.85 or more, the average particle diameter is 0.5 to 20 μm, and the content of carbon is 10 to 30 mass%. Also provided is a method for producing a calcium carbonate particle produced by a spray pyrolysis method having a drying step where an organic acid calcium salt solution is atomized, and drying is performed at 100 to 500°C and a thermal decomposition step of 600 to 1,000°C.SELECTED DRAWING: Figure 3
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Inventors:
Tetsuya Ishimoto
Suzuki Shoji
Takizawa
Suzuki Shoji
Takizawa
Application Number:
JP2016056746A
Publication Date:
March 04, 2020
Filing Date:
March 22, 2016
Export Citation:
Assignee:
Taiheiyo Cement Co., Ltd.
International Classes:
C01F11/18
Domestic Patent References:
| JP2015078110A | ||||
| JP2009160562A | ||||
| JP2013069566A | ||||
| JP7081931A |
Attorney, Agent or Firm:
Alga Patent Office, a patent business corporation
Toshio Takano
Toshio Nakajima
Masaki Murata
Hiroto Yamamoto
Toshio Takano
Toshio Nakajima
Masaki Murata
Hiroto Yamamoto