JPS6445718A - Production of calcium carbonate fine powder - Google Patents

Production of calcium carbonate fine powder

Info

Publication number
JPS6445718A
JPS6445718A JP20169087A JP20169087A JPS6445718A JP S6445718 A JPS6445718 A JP S6445718A JP 20169087 A JP20169087 A JP 20169087A JP 20169087 A JP20169087 A JP 20169087A JP S6445718 A JPS6445718 A JP S6445718A
Authority
JP
Japan
Prior art keywords
calcium carbonate
converter
water
fine powder
slag
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP20169087A
Other languages
Japanese (ja)
Inventor
Junsuke Haruna
Katsuhide Kaneko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP20169087A priority Critical patent/JPS6445718A/en
Publication of JPS6445718A publication Critical patent/JPS6445718A/en
Pending legal-status Critical Current

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  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

PURPOSE:To enable inexpensive production in manufacturing of introducing a CO2 gas to slurry of slaked lime, by using slag of a converter as a raw material. CONSTITUTION:A CO2 gas is bubbled in cooling water which is obtained by sprinkling water upon high-temperature molten slag of a converter or collected by spraying warm water upon cooled slag of a converter to calcium carbonate fine powder. Slag of a converter has high CaO content, the cooling water is water of high pH, the high pH is neutralized by introducing the CO2 gas to the cooling water and this production is advantageous with respect to a countermeasure for waste water. An exhaust gas containing CO2 can be used in bubbling. By this method, calcium carbonate fine powder having particle size of submicron, similar to calcium carbonate obtained by pulverizing lime stone, can be produced.
JP20169087A 1987-08-14 1987-08-14 Production of calcium carbonate fine powder Pending JPS6445718A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20169087A JPS6445718A (en) 1987-08-14 1987-08-14 Production of calcium carbonate fine powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20169087A JPS6445718A (en) 1987-08-14 1987-08-14 Production of calcium carbonate fine powder

Publications (1)

Publication Number Publication Date
JPS6445718A true JPS6445718A (en) 1989-02-20

Family

ID=16445288

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20169087A Pending JPS6445718A (en) 1987-08-14 1987-08-14 Production of calcium carbonate fine powder

Country Status (1)

Country Link
JP (1) JPS6445718A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000042037A (en) * 1998-12-24 2000-07-15 이구택 Method of neutralizing waste water generating in aging treatment of electric furnace slag using carbon dioxide gas
KR20000041665A (en) * 1998-12-23 2000-07-15 이구택 Seasoning method of electric furnace slag with hot carbonated water
KR100476811B1 (en) * 2000-12-21 2005-03-17 주식회사 포스코 A pretreatment method of steel slag by using carbon dioxide
KR100590994B1 (en) * 2004-09-08 2006-06-19 재단법인 포항산업과학연구원 Aging method of steelmaking slag
KR100821045B1 (en) * 2001-10-17 2008-04-08 주식회사 포스코 How to prevent hydration of converter slag

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000041665A (en) * 1998-12-23 2000-07-15 이구택 Seasoning method of electric furnace slag with hot carbonated water
KR20000042037A (en) * 1998-12-24 2000-07-15 이구택 Method of neutralizing waste water generating in aging treatment of electric furnace slag using carbon dioxide gas
KR100476811B1 (en) * 2000-12-21 2005-03-17 주식회사 포스코 A pretreatment method of steel slag by using carbon dioxide
KR100821045B1 (en) * 2001-10-17 2008-04-08 주식회사 포스코 How to prevent hydration of converter slag
KR100590994B1 (en) * 2004-09-08 2006-06-19 재단법인 포항산업과학연구원 Aging method of steelmaking slag

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