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Class Information
Number: 75/557
Name: Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures > Processes > Producing or treating free metal > At 300 degrees c or greater (e.g., pyrometallurgy, etc.) > Iron(fe) > Melting iron(fe) or treating molten iron > Injecting gas or nonmetalliferous liquid which gasifies into, onto, or through premelted iron(fe) or slag layer thereon > Gas contains gaseous oxygen > Injecting only from below melt surface > Including other gas from below
Description: Process wherein a gas other than Oxygen gas or an Oxygen gas containing gas composition is injected from below the melt surface at the same time or at a different time during the processing.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6461404 |
Ladle for enhanced steel vacuum decarburization |
Oct. 8, 2002 |
| 5858059 |
Method for injecting feed streams into a molten bath |
Jan. 12, 1999 |
| 5211743 |
Treatment of a melt with a gas and means therefor |
May. 18, 1993 |
| 4615730 |
Method for refining molten metal bath to control nitrogen |
Oct. 7, 1986 |
| 4614540 |
Process for the removal of contaminating elements from pig-iron, steel, other metals and metal alloys |
Sep. 30, 1986 |
| 4568386 |
Process for purifying metals by insufflation and product produced thereby |
Feb. 4, 1986 |
| 4555266 |
Method and apparatus for treating liquid metal in a vessel |
Nov. 26, 1985 |
| 4529442 |
Method for producing steel in a top oxygen blown vessel |
Jul. 16, 1985 |
| 4529443 |
System and method for producing steel in a top-blown vessel |
Jul. 16, 1985 |
| 4514220 |
Method for producing steel in a top-blown vessel |
Apr. 30, 1985 |
| 4450005 |
Metal refining method |
May. 22, 1984 |
| 4395283 |
Method of switching bottom-blown gases and apparatus therefor |
Jul. 26, 1983 |
| 4394165 |
Method of preliminary desiliconization of molten iron by injecting gaseous oxygen |
Jul. 19, 1983 |
| 4321088 |
Process for treating pig iron melts and steel melts or alloys |
Mar. 23, 1982 |
| 4315772 |
Process for steel production and converter for carrying out the process |
Feb. 16, 1982 |
| 4290306 |
Method and apparatus for probing into a refining furnace or the like for temperature measurement for sampling, or for both |
Sep. 22, 1981 |
| 4260415 |
Decarburizing molten metal |
Apr. 7, 1981 |
| 4253868 |
Apparatus for nitriding metal materials and ferroalloys under pressure |
Mar. 3, 1981 |
| 4208206 |
Method for producing improved metal castings by pneumatically refining the melt |
Jun. 17, 1980 |
| 4188206 |
Metallurgical process |
Feb. 12, 1980 |
| 4165234 |
Process for producing ferrovanadium alloys |
Aug. 21, 1979 |
| 4141723 |
Process for producing stainless steel |
Feb. 27, 1979 |
| RE29584 |
Use of CO.sub.2 in argon-oxygen refining of molten metal |
Mar. 21, 1978 |
| 4045213 |
Method of injecting a powder containing carbon into a metal bath |
Aug. 30, 1977 |
| 4021233 |
Metallurgical process |
May. 3, 1977 |
| 4004920 |
Method of producing low nitrogen steel |
Jan. 25, 1977 |
| 3990888 |
Decarburization of a metal melt |
Nov. 9, 1976 |
| 3940263 |
Steelmaking with inert gas blowing |
Feb. 24, 1976 |
| 3930843 |
Method for increasing metallic yield in bottom blown processes |
Jan. 6, 1976 |
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