SLAKED LIME PARTICLES, LIGHT CALCIUM CARBONATE, PAPER AND COATED PAPER USING SAME, AND METHOD FOR PRODUCING LIGHT CALCIUM CARBONATE

WIPO Patent Application WO/2012/002324

A1

Slaked lime particles which show, in the percentage volume particle size distribution, a cumulative volume of particles of 1.0 μm or less in particle size of 20% or lower and a cumulative volume of particles of 100 μm or less in particle size of 95% or higher. In a process for obtaining said slaked lime particles, it is preferred that slaking water is added to quick lime and mixed therewith at a molar ratio (slaking water/quick lime) of 2.5 or lower. These slaked lime particles are slurried. Then, the resultant slaked lime slurry at 20-70°C is carbonated by blowing a carbon dioxide-containing gas thereinto to give light calcium carbonate. The light calcium carbonate thus obtained can be used as a filler for papers or a pigment for coated papers.

JP2593891	INDUSTRIAL APPLICABILITY: Method for controlling digestion reaction time in quicklime
JPH0474710	PRODUCTION OF GRANULAR SLAKED LIME

OGAWA YUICHI (JP)
KISHIDA TAKAYUKI (JP)
HANAFUSA YOSHIKI (JP)
YANAGIDA TOMOHIRO (JP)
HIATE KAZUYUKI (JP)
HIRABAYASHI TETSUYA (CN)

PCT/JP2011/064688

January 05, 2012

June 27, 2011

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OJI PAPER CO (JP)
OGAWA YUICHI (JP)
KISHIDA TAKAYUKI (JP)
HANAFUSA YOSHIKI (JP)
YANAGIDA TOMOHIRO (JP)
HIATE KAZUYUKI (JP)
HIRABAYASHI TETSUYA (CN)

C01F11/02; C01F11/18; D21H17/67; D21H19/38

JPH1025112A	1998-01-27
JPH09227121A	1997-09-02
JP2005139012A	2005-06-02
JP2000272919A	2000-10-03
JPH1111941A	1999-01-19

SUGIOKA, Kanji et al. (JP)
Sugioka Miki 2 (JP)

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