Process and device for producing pig iron or liquid steel precursors
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 21, 2014
Grant Date -
Jun 16, 2011
app pub date -
Apr 27, 2009
filing date -
Jun 6, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A process for producing pig iron or liquid primary steel products in a smelting unit (1), in particular a melter gasifier. Iron-ore-containing charge materials, and possibly additions, are at least partially reduced in at least one reduction unit (R1, R2, R3, R4) by means of a reducing gas. A first fraction of the at least partially reduced charge materials is melted down in the smelting unit (1), while carbon carriers and oxygen-containing gas are supplied, with the simultaneous formation of the reducing gas. The reducing gas is fed to the reduction unit (R1, R2, R3, R4) and, after the reducing gas has passed through the reduction unit, it is drawn off as top gas. A second fraction of the at least partially reduced charge materials is fed to a smelting reduction unit for reducing and smelting.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2009 Application Filing Year
- C21B Class
- 70 Applications Filed
- 43 Patents Issued To-Date
- 61.43 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 21, 2025 |
