Title:
METHOD FOR ESTIMATING CARBONATION RATE OF STEELMAKING SLAG AND METHOD FOR CARBONATION TREATMENT OF STEELMAKING SLAG
Document Type and Number:
WIPO Patent Application WO/2022/264797
Kind Code:
A1
Abstract:
A method for estimating the carbonation rate of a steelmaking slag that comprises supplying a carbon dioxide-containing gas to the steelmaking slag and estimating the the carbonation rate of the steelmaking slag having been subjected to the carbonation treatment to carbonate the steelmaking slag. This method for estimating the carbonation rate of a steelmaking slag comprises: determining a function representing the estimated carbonation rate (W%) of the steelmaking slag after the carbonation treatment, said function containing, as variables, the volume fraction (Ve) of components other than metallic iron contained in the steelmaking slag before the carbonation treatment, the particle diameter (particle size distribution) (Ds) of the particles constituting the steelmaking slag before the carbonation treatment, the apparent density (ρs) of the steelmaking slag before the carbonation treatment, the carbon dioxide concentration (VCO2) in the carbon dioxide-containing gas supplied to the steelmaking slag in the carbonation treatment, and the treatment time (t) of the carbonation treatment; determining the values of the individual variables; and calculating the estimated carbonation rate (W%) by applying the thus determined values of the variables to the function.
Inventors:
HOSHINO TAKERU (JP)
TA YASUTAKA (JP)
MATSUNAGA HISAHIRO (JP)
TA YASUTAKA (JP)
MATSUNAGA HISAHIRO (JP)
Application Number:
PCT/JP2022/022021
Publication Date:
December 22, 2022
Filing Date:
May 31, 2022
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C04B5/00; G01N33/24
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Other References:
WEI CHAO; DONG JIANPING; HU ZEHUI; ZHANG HUINING; WANG XU; TONG ZHIFANG; LIAO CHUNFA: "CO2 sequestration exploration utilizing converter slag and cold-rolling waste water: The effect of carbonation parameters", PROCESS SAFETY AND ENVIRONMENTAL PROTECTION, vol. 148, 3 March 2021 (2021-03-03), GB , pages 1233 - 1242, XP086529792, ISSN: 0957-5820, DOI: 10.1016/j.psep.2021.02.041
MAOXIA TU, HONGXIN ZHAO , ZE LEI, LINA WANG, DESHENG CHEN, HONGDONG YU, TAO QI: "Aqueous Carbonation of Steel Slag: A Kinetics Study", ISIJ INTERNATIONAL, vol. 55, no. 11, 15 November 2015 (2015-11-15), pages 2509 - 2514, XP093015487, ISSN: 0915-1559, DOI: 10.2355/isijinternational.ISIJINT-2015-142
NAOTO TSUTSUMI: "Development of rapid stabilization process for steelmaking slag", NIPPON STEEL TECHNICAL REPORT, vol. 388, 1 April 2008 (2008-04-01), JP, pages 99 - 109, XP009542203, ISSN: 2187-8196
MATSUI, SHUNSUKE: "Stabilization of calcium compounds in the steelmaking slag", NIPPON STEEL TECHNICAL REPORT, vol. 415, 1 April 2020 (2020-04-01), JP, pages 94 - 99, XP009542206, ISSN: 2187-8196
NAOTO TSUTSUMI: "Influence of humidity or temperature for carbonation rate of soluble calcium components in steelmaking slag (Development of stabilization process for steelmaking slag—2)", MATERIALS AND PROCESSES, vol. 18, no. 4, 1 September 2005 (2005-09-01), JP , pages 1117, XP009542207, ISSN: 0914-6628
NAOTO TSUTSUMI: "Influence of water content in slag for carbonation rate of soluble calcium components in steelmaking slag (Development of stabilization process for steelmaking slag—1)", MATERIALS AND PROCESSES, vol. 18, no. 4, 1 September 2005 (2005-09-01), JP , pages 1116, XP009542208, ISSN: 0914-6628
YI YUAN-RONG, LIN YUE, DU YUN-CONG, BAI SHU-QI, MA ZHONG-LE, CHEN YIN-GUANG: "Accelerated carbonation of ladle furnace slag and characterization of its mineral phase", CONSTRUCTION AND BUILDING MATERIALS, vol. 276, 22 March 2021 (2021-03-22), Netherlands , pages 1 - 9, XP093015490, ISSN: 0950-0618, DOI: 10.1016/j.conbuildmat.2020.122235
MAOXIA TU, HONGXIN ZHAO , ZE LEI, LINA WANG, DESHENG CHEN, HONGDONG YU, TAO QI: "Aqueous Carbonation of Steel Slag: A Kinetics Study", ISIJ INTERNATIONAL, vol. 55, no. 11, 15 November 2015 (2015-11-15), pages 2509 - 2514, XP093015487, ISSN: 0915-1559, DOI: 10.2355/isijinternational.ISIJINT-2015-142
NAOTO TSUTSUMI: "Development of rapid stabilization process for steelmaking slag", NIPPON STEEL TECHNICAL REPORT, vol. 388, 1 April 2008 (2008-04-01), JP, pages 99 - 109, XP009542203, ISSN: 2187-8196
MATSUI, SHUNSUKE: "Stabilization of calcium compounds in the steelmaking slag", NIPPON STEEL TECHNICAL REPORT, vol. 415, 1 April 2020 (2020-04-01), JP, pages 94 - 99, XP009542206, ISSN: 2187-8196
NAOTO TSUTSUMI: "Influence of humidity or temperature for carbonation rate of soluble calcium components in steelmaking slag (Development of stabilization process for steelmaking slag—2)", MATERIALS AND PROCESSES, vol. 18, no. 4, 1 September 2005 (2005-09-01), JP , pages 1117, XP009542207, ISSN: 0914-6628
NAOTO TSUTSUMI: "Influence of water content in slag for carbonation rate of soluble calcium components in steelmaking slag (Development of stabilization process for steelmaking slag—1)", MATERIALS AND PROCESSES, vol. 18, no. 4, 1 September 2005 (2005-09-01), JP , pages 1116, XP009542208, ISSN: 0914-6628
YI YUAN-RONG, LIN YUE, DU YUN-CONG, BAI SHU-QI, MA ZHONG-LE, CHEN YIN-GUANG: "Accelerated carbonation of ladle furnace slag and characterization of its mineral phase", CONSTRUCTION AND BUILDING MATERIALS, vol. 276, 22 March 2021 (2021-03-22), Netherlands , pages 1 - 9, XP093015490, ISSN: 0950-0618, DOI: 10.1016/j.conbuildmat.2020.122235
Attorney, Agent or Firm:
KUMASAKA Akira et al. (JP)
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