Method and system for producing pig iron or fluid steel pre-products

• Main Author: MILLNER ROBERT
• Format: Patent
• Language: Chinese; English
• Published: 14.03.2012
• Subjects: BLASTING; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE; FURNACES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; KILNS; LIGHTING; MANUFACTURE OF IRON OR STEEL; MECHANICAL ENGINEERING; METALLURGY; METALLURGY OF IRON; OVENS; RETORTS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; WEAPONS

The invention relates to a method and to a system for producing pig iron or fluid steel pre-products, wherein charge materials comprising iron ore and additive materials are at least partially reduced in a reduction zone by means of a reduction gas, subsequently introduced into a melting zone and melted under supply of carbon carriers and oxygen-containing gas under formation of said reduction gas. The reduction gas formed in the melting zone is supplied to the reduction zone and there converted and removed as export gas, CO2 is separated from the export gas and a product gas is formed that is used for insertion of powder-shaped carbon carriers in the melting zone.