C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 1/14 (2006.01) C22B 1/24 (2006.01) C22B 1/243 (2006.01) C22B 1/248 (2006.01)
Patent
CA 2456191
A method of producing an iron one briquette that is suitable for use as a blast furnace or other direct reduction furnace feedstock which includes the steps of: (1) mixing: (i) ore having a predetermined particle size distribution with a top size of 4.0 mm or less; and (ii) a flux; to form an ore/flux; (2) adjusting the water content of the ore prior to or during mixing step (1) to optimise briquette quality and product yield; (3) pressing the ore/flux mixture into a green briquette; and (4) indurating the green briquette to from a fired briquette.
L'invention concerne un procédé pour fabriquer une briquette de minerai de fer pouvant servir à alimenter un haut-fourneau ou un autre four à réduction directe. Ce procédé consiste à: (1) mélanger (i) du minerai de granulométrie donnée, dont la dimension maximale des particules est inférieure ou égale à 4.0 mm, avec (ii) un fluidifiant pour former un mélange minerai/fluidifiant; (2) adapter la teneur en eau du minerai avant ou pendant l'opération de mélange (1) pour optimiser la qualité de la briquette et son rendement; (3) comprimer le mélange minerai/fluidifiant en une briquette verte; et (4) durcir la briquette verte pour réaliser une briquette cuite.
Beros Geoffrey Stuart
Gannon John Francis
Commonwealth Scientific And Industrial Research Organisation
Robe River Mining Company Pty Ltd
Sim & Mcburney
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