JPS5591921A - Manufacture of low hydrogen steel - Google Patents
Manufacture of low hydrogen steelInfo
- Publication number
- JPS5591921A JPS5591921A JP16197778A JP16197778A JPS5591921A JP S5591921 A JPS5591921 A JP S5591921A JP 16197778 A JP16197778 A JP 16197778A JP 16197778 A JP16197778 A JP 16197778A JP S5591921 A JPS5591921 A JP S5591921A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- cast iron
- refining
- slag
- molten cast
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To prevent increase in hydrogen dissolved in steel during refining, by the oxidation refining of molten cast iron with slag making agent contg. alkali metal cpd. as a main component, then by decarburizing the steel by oxygen steel making process after removal of the slag.
CONSTITUTION: Molten cast iron 2' for steel making is continuously charged to a closed refining furnace 1, and is subjected to oxidation refining by blowing oxygen through lances 4 while feeding slag making agent such as Na2CO3 etc. This preliminary treatment makes dephosphorization and decarburization progress sufficiently, so that no addn. of slag making agent such as quick lime, calcined dolomite, which are the source of hydrogen generation, is required, however the addn. of these material in a quantity sufficient for protecting refractories in the furnace and for neutralizing SiO2, which is formed from the Si contained in the molten cast iron, e.g., not more than 20kg/T.HM causes no inconvenience.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53161977A JPS5835567B2 (en) | 1978-12-29 | 1978-12-29 | Manufacturing method of low hydrogen steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53161977A JPS5835567B2 (en) | 1978-12-29 | 1978-12-29 | Manufacturing method of low hydrogen steel |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5591921A true JPS5591921A (en) | 1980-07-11 |
JPS5835567B2 JPS5835567B2 (en) | 1983-08-03 |
Family
ID=15745671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53161977A Expired JPS5835567B2 (en) | 1978-12-29 | 1978-12-29 | Manufacturing method of low hydrogen steel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5835567B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7291198B2 (en) | 2000-12-04 | 2007-11-06 | Donaldson Company, Inc. | Filter system; element configuration; and methods |
US8163056B2 (en) | 2005-08-16 | 2012-04-24 | Donaldson Company, Inc. | Air cleaner having anti-rotational arrangement and methods |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5228418A (en) * | 1975-08-29 | 1977-03-03 | Nippon Steel Corp | Oxygen steel making process using low p and s pig iron as raw material |
JPS5244715A (en) * | 1975-10-07 | 1977-04-08 | Nippon Steel Corp | Continuous method of refining molten iron alloy by using alkali metal compoun |
-
1978
- 1978-12-29 JP JP53161977A patent/JPS5835567B2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5228418A (en) * | 1975-08-29 | 1977-03-03 | Nippon Steel Corp | Oxygen steel making process using low p and s pig iron as raw material |
JPS5244715A (en) * | 1975-10-07 | 1977-04-08 | Nippon Steel Corp | Continuous method of refining molten iron alloy by using alkali metal compoun |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7291198B2 (en) | 2000-12-04 | 2007-11-06 | Donaldson Company, Inc. | Filter system; element configuration; and methods |
US7572310B2 (en) | 2000-12-04 | 2009-08-11 | Donaldson Company, Inc. | Filter system; element configuration; and methods |
US7981187B2 (en) | 2000-12-04 | 2011-07-19 | Donaldson Company, Inc. | Filter system; element configuration; and methods |
US8163056B2 (en) | 2005-08-16 | 2012-04-24 | Donaldson Company, Inc. | Air cleaner having anti-rotational arrangement and methods |
US8444735B2 (en) | 2005-08-16 | 2013-05-21 | Donaldson Company, Inc. | Air cleaner having anti-rotational arrangement and methods |
US8753415B2 (en) | 2005-08-16 | 2014-06-17 | Donaldson Company, Inc. | Air cleaner having anti-rotational arrangements and methods |
Also Published As
Publication number | Publication date |
---|---|
JPS5835567B2 (en) | 1983-08-03 |
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