GB492896A - Process for degasifying and killing liquid steels - Google Patents
Process for degasifying and killing liquid steelsInfo
- Publication number
- GB492896A GB492896A GB8843/37A GB884337A GB492896A GB 492896 A GB492896 A GB 492896A GB 8843/37 A GB8843/37 A GB 8843/37A GB 884337 A GB884337 A GB 884337A GB 492896 A GB492896 A GB 492896A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silico
- mixture
- steel
- poured
- calcium
- 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)
Abstract
Molten dephosphorized steel is degasefied and killed by introducing in the steel, while it is being poured into a receptacle, a reducing mixture, generally pulverised, comprising one or more reducing agents capable of fixing oxygen, and, if desired, of evolving heat and one or more substances capable of producing an evolution of gas thus ensuring ebullition of the bath and the formation of a slag with the reducing agent &c. The mixture may be placed in the receptacle and the steel poured on to it or may be introduced into the jet of metal while it is being poured. Simple or complex alloys such as silico-calcium, silico-aluminium, silico-titanium or ferro-silicon may be used as the reducing agents and the other substances alkaline compounds such as sodium or potassium carbonate, caustic soda or potash. Compounds such as siliceous sand, bauxite, fluorspar or ilmenite, which stabilize and slow down their decomposition, may be added to the alkaline compounds. Elements such as nickel, chromium, carbon, manganese, or silicon which it is desired to incorporate in the steel may be added to the mixture either in the form of alloys or of compounds. In one example, a mixture of 2,8 kilograms of silico-calcium, 3 of sodium carbonate and 0,8 of white siliceous sand is placed in a ladle and a metric ton of molten steel poured on to it. In another example, the mixture comprises 2,6 kilograms of silico-calcium, 3 of sodium carbonate 0,8 of white sand and 3 of ferro-chromium containing 0,1-0,2 of carbon.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT492896X | 1936-03-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB492896A true GB492896A (en) | 1938-09-26 |
Family
ID=11270229
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8843/37A Expired GB492896A (en) | 1936-03-27 | 1937-03-25 | Process for degasifying and killing liquid steels |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB492896A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2805932A (en) * | 1953-02-25 | 1957-09-10 | Menzen Paul | Process for the treatment of steel smeltings with light metals |
US3426833A (en) * | 1964-11-12 | 1969-02-11 | Alfred Randak | Process for the manufacture of steel ingots |
-
1937
- 1937-03-25 GB GB8843/37A patent/GB492896A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2805932A (en) * | 1953-02-25 | 1957-09-10 | Menzen Paul | Process for the treatment of steel smeltings with light metals |
US3426833A (en) * | 1964-11-12 | 1969-02-11 | Alfred Randak | Process for the manufacture of steel ingots |
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