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1. (WO2019064052) METHOD OF CONTINUOUS MANUFACTURING OF SOLIDIFIED STEELMAKING SLAG AND ASSOCIATED DEVICE
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Pub. No.: WO/2019/064052 International Application No.: PCT/IB2017/055967
Publication Date: 04.04.2019 International Filing Date: 28.09.2017
IPC:
C22B 7/04 (2006.01) ,C04B 5/00 (2006.01) ,C21B 3/06 (2006.01) ,C21B 3/08 (2006.01)
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
B
PRODUCTION OR REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
7
Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
04
Working-up slag
C CHEMISTRY; METALLURGY
04
CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
B
LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
5
Treatment of molten slag; Artificial stone from molten slag
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
B
MANUFACTURE OF IRON OR STEEL
3
General features in the manufacture of pig-iron
04
Recovery of by-products, e.g. slag
06
Treatment of liquid slag
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
B
MANUFACTURE OF IRON OR STEEL
3
General features in the manufacture of pig-iron
04
Recovery of by-products, e.g. slag
06
Treatment of liquid slag
08
Cooling slag
Applicants:
ARCELORMITTAL [LU/LU]; 24-26, Boulevard d'Avranches L-1160 Luxembourg, LU
Inventors:
DE CONINCK, Eric; BE
INFANTE, Ivonne; BE
MATTOS DOS SANTOS, Rafael; CA
OUNOUGHENE, Ghania; BE
VAN GERVEN, Thomas; BE
Agent:
PLAISANT, Sophie; FR
Priority Data:
Title (EN) METHOD OF CONTINUOUS MANUFACTURING OF SOLIDIFIED STEELMAKING SLAG AND ASSOCIATED DEVICE
(FR) PROCÉDÉ DE FABRICATION CONTINUE DE LAITIER D'ACIÉRIE SOLIDIFIÉ ET DISPOSITIF ASSOCIÉ
Abstract:
(EN) The invention is related to a method of continuous manufacturing of solidified steelmaking slag comprising the steps of: - solidifying molten steelmaking slag comprising at least 2% in weight of free lime so as to produce solidified slag particles having a diameter below 1 mm, the molten steelmaking slag being put in contact with at least a first carbonation gas during such solidification, - cooling the solidified slag particles down to a temperature below or equal to 300°C, in a closed chamber, the solidified slag particles being put in contact with at least one second carbonation gas during such cooling. The invention is also related to an associated device.
(FR) L'invention concerne un procédé de fabrication continue de laitier d'aciérie solidifié comprenant les étapes consistant à : - solidifier un laitier d'aciérie fondu comprenant au moins 2 % en poids de chaux libre de façon à produire des particules de laitier solidifiées ayant un diamètre inférieur à 1 mm, le laitier d'aciérie fondu étant mis en contact avec au moins un premier gaz de carbonatation pendant cette solidification, - refroidir les particules de laitier solidifiées jusqu'à une température inférieure ou égale à 300 °C, dans une chambre fermée, les particules de laitier solidifiées étant mises en contact avec au moins un second gaz de carbonatation pendant ce refroidissement. L’invention concerne en outre un dispositif associé.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)