GB1225404A - - Google Patents
Info
- Publication number
- GB1225404A GB1225404A GB1225404DA GB1225404A GB 1225404 A GB1225404 A GB 1225404A GB 1225404D A GB1225404D A GB 1225404DA GB 1225404 A GB1225404 A GB 1225404A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- deoxidation
- aluminium
- chamber
- deoxidized
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Gas Separation By Absorption (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
1,225,404. Metal treatment Deoxidation. KAISER INDUSTRIES CORP. July 22, 1968 [Aug.3, 1967], No.34948/68. Heading C7D. Ferrous metal substantially free from oxygencontaining impurities is prepared by lowering the dissolved oxygen content in a preliminary deoxidation to not more than that given by the formula Log 10 %0 = 7640/T(‹ K)+2À84 and, if aluminium is used for this deoxidation, not more than that which is related to the aluminium present by the formula Log 10 [(%Al)<SP>2</SP>. (%O)<SP>4</SP>] = -79600/T (‹ K)+32À15, separating the preliminarily deoxidized metal from deoxidisation products and subjecting it to further treatment. The further treatment involves preparing a chamber lined with refractory containing 3À5% Feo or less which will not yield oxygen to molten metal containing aluminium as a deoxidizer, passing a non-oxygen-yielding gas into the chamber, adding a stoichiometric excess of aluminium over that theoretically required to deoxidized the metal, introducing the metal into the chamber, maintaining the chamber above the melting point of the metal until deoxidation has reduced dissolved oxygen in the metal to not more than 0À006% by weight and separating insoluble material from the deoxidized molten metal. Other agents such as hydrogen or carbon may be used for the preliminary deoxidation.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US65816267A | 1967-08-03 | 1967-08-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1225404A true GB1225404A (en) | 1971-03-17 |
Family
ID=24640162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1225404D Expired GB1225404A (en) | 1967-08-03 | 1968-07-22 |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE718960A (en) |
DE (1) | DE1758765A1 (en) |
FR (1) | FR1582227A (en) |
GB (1) | GB1225404A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2459836A1 (en) * | 1979-06-27 | 1981-01-16 | Uss Eng & Consult | PROCESS FOR DEOXIDATION OF STEEL BY ADDITION OF ALUMINUM THEN INSUFFLATION OF ARGON |
-
1968
- 1968-07-22 GB GB1225404D patent/GB1225404A/en not_active Expired
- 1968-08-01 FR FR1582227D patent/FR1582227A/fr not_active Expired
- 1968-08-02 BE BE718960D patent/BE718960A/xx unknown
- 1968-08-03 DE DE19681758765 patent/DE1758765A1/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2459836A1 (en) * | 1979-06-27 | 1981-01-16 | Uss Eng & Consult | PROCESS FOR DEOXIDATION OF STEEL BY ADDITION OF ALUMINUM THEN INSUFFLATION OF ARGON |
Also Published As
Publication number | Publication date |
---|---|
FR1582227A (en) | 1969-09-26 |
BE718960A (en) | 1969-01-16 |
DE1758765A1 (en) | 1972-04-06 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |