Operation method of vertical furnace
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 10, 2000
Grant Date -
N/A
app pub date -
Sep 23, 1997
filing date -
Jan 26, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for operating a shaft furnace which comprises charging the furnace with an iron source having a low degree of metallization and thus requiring reduction, an iron source having a high degree of metallization and thus requiring nothing but melting, and a solid fuel, and blowing an oxygen-containing gas at ordinary or higher temperature up to 600.degree. C. into the furnace through tuyeres to reduce and melt the iron sources. The optimal values of .eta.co (gas utilization factor) are determined from the average degree of metallization of the iron sources, and the shaft furnace is controlled so that the effluent gas from the furnace has the optimal .eta.co values. The control is accomplished by regulating the height of the charge, regulating the height of the coke bed, etc., using multistage tuyeres, and radially partitioning the charge. Thus, the iron sources can be efficiently reduced and melted at a low fuel ratio.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully