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JPS55100220A - Recovering method for calcium carbonate in converter slag - Google Patents

Recovering method for calcium carbonate in converter slag

Info

Publication number
JPS55100220A
JPS55100220A JP544679A JP544679A JPS55100220A JP S55100220 A JPS55100220 A JP S55100220A JP 544679 A JP544679 A JP 544679A JP 544679 A JP544679 A JP 544679A JP S55100220 A JPS55100220 A JP S55100220A
Authority
JP
Japan
Prior art keywords
caco
soln
converter slag
pipe
contg
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
JP544679A
Other languages
Japanese (ja)
Inventor
Koji Ebihara
Koji Okuma
Keizo Inoue
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
Sumitomo Metal Industries Ltd
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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP544679A priority Critical patent/JPS55100220A/en
Publication of JPS55100220A publication Critical patent/JPS55100220A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/18—Carbonates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Furnace Details (AREA)

Abstract

PURPOSE: To recover unslagged CaO in converter slag as CaCO3 and recycle the CaCO3 as construction material as well as starting material for iron manufacture by injecting water into crushed converter slag and blowing CO2-contg. gas into the resulting aq. soln. to separate CaCO3.
CONSTITUTION: Crushed converter slag (a) of about 10mm or less is packed into packed tower 1, and water is injected from main pipe 9 with pump 8 to obtain an aq. soln. by catalytic reaction. This soln. is fed to thickener 2 through discharge pipe 3, and in thickener 2 CO2-contg. gas is blown into the soln. from pipe 10 at a regulated rate while measuring the pH value of the soln. with pH meter 12 and detecting the measured value with recorder 2 to maintain the pH value constant, thus inducing the following reaction: Ca(OH)2+CO2→CaCO3+H2. A slurry contg. the CaCO3 precipitated is then introduced into centrifugal separator 4 through pipe 5 to recover the CaCO3 by solid-liquid separation.
COPYRIGHT: (C)1980,JPO&Japio
JP544679A 1979-01-19 1979-01-19 Recovering method for calcium carbonate in converter slag Pending JPS55100220A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP544679A JPS55100220A (en) 1979-01-19 1979-01-19 Recovering method for calcium carbonate in converter slag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP544679A JPS55100220A (en) 1979-01-19 1979-01-19 Recovering method for calcium carbonate in converter slag

Publications (1)

Publication Number Publication Date
JPS55100220A true JPS55100220A (en) 1980-07-31

Family

ID=11611424

Family Applications (1)

Application Number Title Priority Date Filing Date
JP544679A Pending JPS55100220A (en) 1979-01-19 1979-01-19 Recovering method for calcium carbonate in converter slag

Country Status (1)

Country Link
JP (1) JPS55100220A (en)

Cited By (10)

* 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
KR100750689B1 (en) 2006-08-17 2007-08-22 장용식 Neutralization system for slag and method for neutralizing slag
JP2011084467A (en) * 2010-12-03 2011-04-28 Yukio Yanagisawa Method for producing high purity calcium carbonate from calcium-containing waste
CN102889083A (en) * 2012-09-18 2013-01-23 中国矿业大学(北京) Method for confirming coal mining sunken surface soil peeling space time based on geographic information system (GIS) grid unit
CN104310452A (en) * 2014-09-30 2015-01-28 武汉科技大学 Method for preparing light calcium carbonate by using LF refined waste residues
WO2015114703A1 (en) 2014-01-28 2015-08-06 日新製鋼株式会社 Phosphorus and calcium collection method, and mixture produced by said collection method
WO2016152099A1 (en) * 2015-03-23 2016-09-29 日新製鋼株式会社 Method for recovering calcium-containing solid component from steelmaking slag and recovered solid component
WO2017163595A1 (en) * 2016-03-24 2017-09-28 日新製鋼株式会社 Method for eluting calcium from steel slag and method for recovering calcium from steel slag
WO2018135439A1 (en) * 2017-01-18 2018-07-26 日新製鋼株式会社 Method for eluting calcium from steelmaking slag, and method for collecting calcium from steelmaking slag
EP3868905A1 (en) * 2020-02-20 2021-08-25 TCG cleanliness GmbH Method and system for implementing a limestone-carbon dioxide cycle in iron and steel production

Cited By (22)

* 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
KR100750689B1 (en) 2006-08-17 2007-08-22 장용식 Neutralization system for slag and method for neutralizing slag
JP2011084467A (en) * 2010-12-03 2011-04-28 Yukio Yanagisawa Method for producing high purity calcium carbonate from calcium-containing waste
CN102889083A (en) * 2012-09-18 2013-01-23 中国矿业大学(北京) Method for confirming coal mining sunken surface soil peeling space time based on geographic information system (GIS) grid unit
KR20160093088A (en) 2014-01-28 2016-08-05 닛신 세이코 가부시키가이샤 Phosphorus and calcium collection method, and mixture produced by said collection method
WO2015114703A1 (en) 2014-01-28 2015-08-06 日新製鋼株式会社 Phosphorus and calcium collection method, and mixture produced by said collection method
RU2618004C1 (en) * 2014-01-28 2017-05-02 Ниссин Стил Ко., Лтд. Method for phosphorus and calcium recovery, and mixture obtained by this method
US9783418B2 (en) 2014-01-28 2017-10-10 Nisshin Steel Co., Ltd. Phosphorus and calcium collection method, and mixture produced by said collection method
CN104310452A (en) * 2014-09-30 2015-01-28 武汉科技大学 Method for preparing light calcium carbonate by using LF refined waste residues
US10287652B2 (en) 2015-03-23 2019-05-14 Nisshin Steel Co., Ltd. Method for recovering calcium-containing solid component from steelmaking slag and recovered solid component
WO2016152099A1 (en) * 2015-03-23 2016-09-29 日新製鋼株式会社 Method for recovering calcium-containing solid component from steelmaking slag and recovered solid component
JP2016179909A (en) * 2015-03-23 2016-10-13 日新製鋼株式会社 Method for recovering calcium-containing solid component from steel slag, and recovered solid component
TWI679282B (en) * 2015-03-23 2019-12-11 日商日鐵日新製鋼股份有限公司 Method for recovering calcium-containing solid content from steelmaking slag
RU2695173C2 (en) * 2015-03-23 2019-07-22 Ниссин Стил Ко., Лтд. Method of extracting a calcium-containing solid component from steel-smelting slag and a recovered solid component
WO2017163595A1 (en) * 2016-03-24 2017-09-28 日新製鋼株式会社 Method for eluting calcium from steel slag and method for recovering calcium from steel slag
JPWO2017163595A1 (en) * 2016-03-24 2019-01-31 日新製鋼株式会社 Method for eluting calcium from steelmaking slag and method for recovering calcium from steelmaking slag
CN108883984A (en) * 2016-03-24 2018-11-23 日新制钢株式会社 The method for making calcium recycle calcium from the method dissolved out in steelmaking slag and from steelmaking slag
EP3434655A4 (en) * 2016-03-24 2019-10-30 Nisshin Steel Co., Ltd. Method for eluting calcium from steel slag and method for recovering calcium from steel slag
RU2718879C1 (en) * 2016-03-24 2020-04-15 Ниссин Стил Ко., Лтд. Method of eluting calcium from steel-smelting slag and method of extracting calcium from steel-smelting slag
CN108779505A (en) * 2017-01-18 2018-11-09 日新制钢株式会社 The method for making calcium recycle calcium from the method dissolved out in steelmaking slag and from steelmaking slag
WO2018135439A1 (en) * 2017-01-18 2018-07-26 日新製鋼株式会社 Method for eluting calcium from steelmaking slag, and method for collecting calcium from steelmaking slag
EP3868905A1 (en) * 2020-02-20 2021-08-25 TCG cleanliness GmbH Method and system for implementing a limestone-carbon dioxide cycle in iron and steel production

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