Method for producing metallic iron

Details Method for producing metallic iron Method for producing metallic iron

C - Chemistry, Metallurgy

21

B

C21B 13/10 (2006.01) C21B 13/00 (2006.01)

Patent

CA 2448237

An object of the present invention is to establish a technique which is applied to a process of producing metallic iron by reducing raw materials including an iron--oxide containing material and a carbonaceous reducing agent under heating, and which can minimize re-oxidization of the metallic iron, i.e., a problem occurred in the last period of solid-state reduction, and can efficiently produce metallic iron having a high metallization ratio and high iron purity at a high yield. The present invention resides in a method for producing metallic iron, the method comprising the steps of heating raw materials including a carbonaceous reducing agent and an iron-oxide containing material in a reduction melting furnace of the moving hearth type, and reducing and melting iron oxides in the raw materials, wherein the reduction melting furnace is partitioned into at least three zones in a hearth moving direction, at least one of the partitioned zones on the upstream side in the hearth moving direction is a solid-state reducing zone, at least one of the partitioned zones on the downstream side in the hearth moving direction is a carburization melting zone, and a reduction aging zone is provided between the solid-state reducing zone and the carburization melting zone.

La présente invention concerne une technique permettant la production de fer métallique de métallisation et pureté élevées, avec un rendement et une efficacité élevés, en minimisant le problème de ré-oxydation du fer métallique survenant à la fin de la réduction solide, au cours de la production de fer métallique par chauffage/réduction de substances incluant une substance comprenant de l'oxyde de fer et un agent de réduction carboné. L'invention a également pour objet un procédé de production de fer métallique par chauffage de substances incluant une substance comprenant de l'oxyde de fer et un agent de réduction carboné, dans un four de réduction/fusion de type à fond mobile, et par réduction/fusion de l'oxyde de fer dans les substances, le four de réduction/fusion étant compartimenté en au moins trois parties dans la direction de déplacement du fond, les dites parties correspondant à une partie de réduction solide du côté amont dans la direction de déplacement du fond, une partie de carburation/fusion du côté aval, et une partie de réduction/vieillissement disposée entre la partie de réduction solide et la partie de carburation/fusion.

Affiliated with

Also associated with

Rating

Method for producing metallic iron does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing metallic iron, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing metallic iron will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1666642