GB820241A - Process for the production of ferromanganese from high-grade manganese-bearing materials - Google Patents
Process for the production of ferromanganese from high-grade manganese-bearing materialsInfo
- Publication number
- GB820241A GB820241A GB2120656A GB2120656A GB820241A GB 820241 A GB820241 A GB 820241A GB 2120656 A GB2120656 A GB 2120656A GB 2120656 A GB2120656 A GB 2120656A GB 820241 A GB820241 A GB 820241A
- Authority
- GB
- United Kingdom
- Prior art keywords
- charge
- slag
- manganese
- iron
- oxides
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Manufacture Of Iron (AREA)
Abstract
High-carbon ferro-manganese is produced from ore containing oxides of manganese, iron, calcium and silicon the ore being passed to the surface of a molten slag bath in an electric furnace in the form of a hot, calcined substantially constant composition charge with a controlled amount of solid carbonaceous reducing agent and being smelted at a temperature in the range 1300 DEG C. to 1500 DEG C. The charge is so composed that the slag contains a small amount of calcium carbide and contains silica and basic oxides (excluding manganese oxides) in the ratio of 1 molecule of silica to 1.7-2.2 molecules of basic oxide. The arc tips of the electrodes are maintained from about 1/2 inch above the upper surface of the slag bath to about 3 inches below it. The depth of slag is controlled to give a substantially constant resistance and the charge is introduced at such a rate and in such a direction as to avoid submergance of the arcing tips beneath the raw charge material. The calcium carbide may be added as such to the slag or formed therein by reaction of lime with a sufficient excess of carbonaceous material. Iron may be added to the charge as scrap metal or as iron oxide. Specification 762,469 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US820241XA | 1955-07-22 | 1955-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB820241A true GB820241A (en) | 1959-09-16 |
Family
ID=22168549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2120656A Expired GB820241A (en) | 1955-07-22 | 1956-07-09 | Process for the production of ferromanganese from high-grade manganese-bearing materials |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB820241A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2802215A1 (en) * | 1999-12-09 | 2001-06-15 | Nippon Denko | Evaluation of a manganese-containing mineral prior to addition to an electric furnace for production of a manganese-based ferroalloy is based on its electrical conductivity relative to that of a carbon-based reducing agent |
-
1956
- 1956-07-09 GB GB2120656A patent/GB820241A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2802215A1 (en) * | 1999-12-09 | 2001-06-15 | Nippon Denko | Evaluation of a manganese-containing mineral prior to addition to an electric furnace for production of a manganese-based ferroalloy is based on its electrical conductivity relative to that of a carbon-based reducing agent |
| AU778649B2 (en) * | 1999-12-09 | 2004-12-16 | Nippon Denko Co., Ltd. | Method of producing manganese-based ferroalloy in an electric furnace |
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