Patent ID: 6264725
Filing Date: 2001-07-24
Classification: C21B,Y02P,Y10S

Abstract:
A process for producing liquid pig iron or steel preproducts from fine-particulate iron-oxide carriers and lumpy iron-containing material in a meltdown gasifying zone of a melter gasifier comprising:melting the iron-containing material in a bed formed of solid carbon carriers under the supply of carbon-containing material and oxygen-containing gas while simultaneously forming a reducing gas;introducing fine-particulate iron oxide carriers into a reducing gas stream leaving the melter gasifier to form fine-particulate material;separating the reducing gas from the fine-particulate material formed thereby;conveying the separated fine-particulate material to a dust burner via a dust recirculation line and through a fluidized bed sluice formed by the separated fine-particulate material and reducing gas fed thereto;introducing the separated fine-particulate material into the meltdown gasifying zone from the dust burner; andusing the reducing gas for reducing iron-oxide-containing material.