Method for producing metallic iron

C - Chemistry – Metallurgy – 21 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C21B 13/10 (2006.01) C21B 13/00 (2006.01) C22B 1/245 (2006.01) C22B 5/10 (2006.01)

Patent

CA 2448361

The present invention is intended to provide a method for producing metallic iron, which comprises the steps of supplying a mixture containing a carbonous reducing agent and iron oxides onto a hearth of a reduction melting furnace of the moving hearth type, heating the mixture for reduction melting of the iron oxides, cooling thus-obtained metallic iron, and discharging the metallic iron to the outside of the furnace for recovery. The method can easily remove or repair the surface of a hearth even when metallic iron powder is buried in the hearth surface or even when the hearth surface suffers from slag infiltration and erosion, can increase an availability factor and maintainability of the hearth, and is suitably practiced for long-term continuous operation. The present invention resides in a method for producing metallic iron, wherein a hearth material is laid in the form of a layer on the hearth prior to supply of the mixture, thereby forming a renewable hearth capable of being renewed, and the metallic iron is produced while renewing a part or the whole of the renewable hearth, which has deteriorated during operation, with the hearth material.

L'invention concerne un procédé de fabrication de fer métallique pouvant augmenter la vitesse de fonctionnement et l'entretien d'un foyer et adapté à une opération continue à long terme en permettant à la poudre de fer métallique d'être extraite facilement et à la surface du foyer d'être facilement réparée, même si la poudre de fer métallique se trouve enfouie dans la surface du foyer ou si la surface est soumise à l'invasion ou à l'érosion de scories lors de la production de fer métallique. On alimente le foyer d'un four de fusion/réduction de type sol amovible par un mélange contenant un réducteur carboné et de l'oxyde de fer ensuite, l'oxyde de fer est chauffé en vue d'être réduit et le fer métallique ainsi obtenu est refroidi et évacué à l'extérieur du four afin d'être recueilli. Le procédé prévoit aussi des phases de formation d'un foyer renouvelable en apposant des matériaux de foyer sur le foyer sous forme de couches avant d'apporter le mélange et en renouvelant une partie ou tout le foyer détérioré au cours de son fonctionnement en utilisant les matériaux de foyer.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

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

     

Profile ID: LFCA-PAI-O-2088687

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.