EP 4400607 A1 20240717 - INTRA-FURNACE STATE INFERENCE DEVICE, INTRA-FURNACE STATE INFERENCE METHOD, AND MOLTEN STEEL MANUFACTURING METHOD
Title (en)
INTRA-FURNACE STATE INFERENCE DEVICE, INTRA-FURNACE STATE INFERENCE METHOD, AND MOLTEN STEEL MANUFACTURING METHOD
Title (de)
OFENINTERNE ZUSTANDSABLEITUNGSVORRICHTUNG, OFENINTERNES ZUSTANDSABLEITUNGSVERFAHREN UND VERFAHREN ZUR HERSTELLUNG VON GESCHMOLZENEM STAHL
Title (fr)
DISPOSITIF D'INFÉRENCE D'ÉTAT INTRA-FOUR, PROCÉDÉ D'INFÉRENCE D'ÉTAT INTRA-FOUR ET PROCÉDÉ DE FABRICATION D'ACIER FONDU
Publication
Application
Priority
- JP 2021193655 A 20211129
- JP 2022042138 W 20221111
Abstract (en)
A furnace state estimation device (1) including: an input unit (11) configured to receive track record information and conditions of refining treatment; a model determination unit (14) configured to determine model parameters using past model parameters; a furnace state calculation unit (15) configured to calculate state quantities, including temperature and component concentration of molten metal and component concentration of slag, in a furnace, using the determined model parameters; and a model parameter calculation unit (13) configured to calculate model parameters in the refining treatment of the target charge, based on an evaluation function that includes terms representing a mass balance error and a heat balance error in the furnace from beginning to end of a particular period of time in the refining treatment, using track record information including results of the refining treatment of the target charge.
IPC 8 full level
CPC (source: EP)
C21C 5/28 (2013.01); C21C 5/4673 (2013.01); C21C 7/00 (2013.01); C21C 2005/5288 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4400607 A1 20240717; CN 118103530 A 20240528; JP 7392897 B2 20231206; JP WO2023095647 A1 20230601; KR 20240090437 A 20240621; TW 202321468 A 20230601; WO 2023095647 A1 20230601
DOCDB simple family (application)
EP 22898431 A 20221111; CN 202280069651 A 20221111; JP 2022042138 W 20221111; JP 2023505466 A 20221111; KR 20247015910 A 20221111; TW 111144902 A 20221124