EP 4303329 A1 20240110 - IRON ORE PELLET PRODUCTION METHOD
Title (en)
IRON ORE PELLET PRODUCTION METHOD
Title (de)
EISENERZPELLETHERSTELLUNGSVERFAHREN
Title (fr)
PROCÉDÉ DE PRODUCTION DE BOULETTES DE MINERAI DE FER
Publication
Application
Priority
- JP 2021062578 A 20210401
- JP 2021018288 W 20210513
Abstract (en)
According to an aspect of the present invention, a method for producing iron ore pellets used for operation of a blast furnace and in which a CaO/SiO<sub>2</sub> mass ratio is greater than or equal to 0.8 and a MgO/SiO<sub>2</sub> mass ratio is greater than or equal to 0.4, includes: balling green pellets by adding, to an iron ore material and dolomite, water for use in the balling; and a step of firing the green pellets, in which the dolomite has a characteristic of being present in a miniaturized state in a structure of the green pellets.
IPC 8 full level
CPC (source: EP US)
C22B 1/02 (2013.01 - US); C22B 1/16 (2013.01 - US); C22B 1/20 (2013.01 - EP); C22B 1/216 (2013.01 - EP); C22B 1/2406 (2013.01 - EP US); C22B 1/2413 (2013.01 - EP); C22B 1/243 (2013.01 - EP)
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 MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
EP 4303329 A1 20240110; AU 2021439033 A1 20231019; BR 112023018032 A2 20231024; CA 3214315 A1 20221006; CL 2023002936 A1 20240315; CN 116981785 A 20231031; JP 2022158000 A 20221014; SE 2351219 A1 20231025; US 2024158886 A1 20240516; WO 2022208904 A1 20221006
DOCDB simple family (application)
EP 21935064 A 20210513; AU 2021439033 A 20210513; BR 112023018032 A 20210513; CA 3214315 A 20210513; CL 2023002936 A 20230929; CN 202180095893 A 20210513; JP 2021018288 W 20210513; JP 2021062578 A 20210401; SE 2351219 A 20210513; US 202118552247 A 20210513