GB503794A - Improved manufacture of ferrochromium - Google Patents
Improved manufacture of ferrochromiumInfo
- Publication number
- GB503794A GB503794A GB2789637A GB2789637A GB503794A GB 503794 A GB503794 A GB 503794A GB 2789637 A GB2789637 A GB 2789637A GB 2789637 A GB2789637 A GB 2789637A GB 503794 A GB503794 A GB 503794A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ferrochromium
- carbon
- furnace
- charge
- per cent
- 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
Abstract
503,794. Manufacture of ferrochromium. UDY, M. J. Oct. 13, 1937, No. 27896. [Class 82 (i)] A process for making ferrochromium from chromite ores in an electric furnace and using carbon to reduce both chromium and iron oxides, is characterized by introducing sufficient base (e.g. lime) with the charge of ore and carbon (e.g. coke) to form with the gangue present a slag having a molecular ratio of base to acid oxides between 2:1 and 4: 1, and allowing the temperature of the charge to rise above 1600‹ C. sufficiently to render the slag free running and tapping off molten ferrochrome. The carbon content may correspond to the usual grades viz. to 1À5-4 per cent, 4-6, and 6-10 per cent. An ore containing CaO replacing FeO as'described in Specification 437,008 may be used. Little or no " crust " is formed in the furnace and a single-phase or 3- phase furnace may be employed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2789637A GB503794A (en) | 1937-10-13 | 1937-10-13 | Improved manufacture of ferrochromium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2789637A GB503794A (en) | 1937-10-13 | 1937-10-13 | Improved manufacture of ferrochromium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB503794A true GB503794A (en) | 1939-04-13 |
Family
ID=10267023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2789637A Expired GB503794A (en) | 1937-10-13 | 1937-10-13 | Improved manufacture of ferrochromium |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB503794A (en) |
-
1937
- 1937-10-13 GB GB2789637A patent/GB503794A/en not_active Expired
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