GB636976A - Improvements in and relating to the manufacture of ferro-alloys - Google Patents
Improvements in and relating to the manufacture of ferro-alloysInfo
- Publication number
- GB636976A GB636976A GB2904247A GB2904247A GB636976A GB 636976 A GB636976 A GB 636976A GB 2904247 A GB2904247 A GB 2904247A GB 2904247 A GB2904247 A GB 2904247A GB 636976 A GB636976 A GB 636976A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oxygen
- refining vessel
- fluid
- ferro
- injected
- 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
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B11/00—Making pig-iron other than in blast furnaces
- C21B11/02—Making pig-iron other than in blast furnaces in low shaft furnaces or shaft furnaces
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
A process of producing a low carbon ferro-chrome or ferro-manganese comprises smelting an ore of chromium or manganese with carbonaceous material in a shaft furnace into which is injected an oxygen-rich fluid, transferring the smelted alloy to a separate refining vessel and blowing into it an oxygen-rich fluid to reduce its carbon content. The fluid injected into the furnace may be preheated and may contain at least 50 per cent of oxygen. The fluid blown into the metal in the refining vessel may contain between 85 and 98 per cent of oxygen. The height of the shaft furnace may be less than normal to an extent determined by the oxygen content of the injected fluid and its degree of pre-heat. In the refining vessel, which may be an electric furnace, the reduction of carbon content may be accompanied by a simultaneous reduction of chromium content, where a chromium ore is reduced, to such an extent as to result in a stainless steel. Stainless steel may also be produced by addition of low carbon steel base to the low carbon ferro-chrome in the refining vessel. Such addition may be made in a second refining vessel and the resulting alloy may be further blown to produce stainless stell. The Specification refers to the addition of other metals to the stainless steel, e.g. nickel, titanium, niobium and molybdenum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2904247A GB636976A (en) | 1947-10-30 | 1947-10-30 | Improvements in and relating to the manufacture of ferro-alloys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2904247A GB636976A (en) | 1947-10-30 | 1947-10-30 | Improvements in and relating to the manufacture of ferro-alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB636976A true GB636976A (en) | 1950-05-10 |
Family
ID=10285292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2904247A Expired GB636976A (en) | 1947-10-30 | 1947-10-30 | Improvements in and relating to the manufacture of ferro-alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB636976A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2204595A (en) * | 1987-05-12 | 1988-11-16 | Consarc Eng | Metal refining process |
-
1947
- 1947-10-30 GB GB2904247A patent/GB636976A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2204595A (en) * | 1987-05-12 | 1988-11-16 | Consarc Eng | Metal refining process |
| GB2204595B (en) * | 1987-05-12 | 1990-11-28 | Consarc Eng | Metal refining process |
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