GB938219A - Process for the production of dense, low-porosity or non-porous iron powder from sponge iron - Google Patents
Process for the production of dense, low-porosity or non-porous iron powder from sponge ironInfo
- Publication number
- GB938219A GB938219A GB2982762A GB2982762A GB938219A GB 938219 A GB938219 A GB 938219A GB 2982762 A GB2982762 A GB 2982762A GB 2982762 A GB2982762 A GB 2982762A GB 938219 A GB938219 A GB 938219A
- Authority
- GB
- United Kingdom
- Prior art keywords
- production
- dense
- iron
- porosity
- powder
- 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
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0086—Conditioning, transformation of reduced iron ores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
Abstract
In the production of dense low porosity iron powder from sponge iron the latter is annealed in uncrushed lump form or in pellets or briquettes under a reducing or inert atmosphere, and is then crushed to the desired particle size. Annealing should be at a temperature of 1000 DEG C. or over, and the sponge iron is preferably in the form of lumps of 10 mm. to 50 mm. diameter. For powder metallurgy use, the crushed powder is annealed at above 10 DEG C. above the recrystallisation temperature and then crushed to less than 0.5 mm. particle size.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM0044216 | 1961-11-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB938219A true GB938219A (en) | 1963-10-02 |
Family
ID=7304908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2982762A Expired GB938219A (en) | 1961-11-24 | 1962-08-03 | Process for the production of dense, low-porosity or non-porous iron powder from sponge iron |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB938219A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3476547A (en) * | 1966-10-20 | 1969-11-04 | Gen Motors Corp | Method of making metal powder |
-
1962
- 1962-08-03 GB GB2982762A patent/GB938219A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3476547A (en) * | 1966-10-20 | 1969-11-04 | Gen Motors Corp | Method of making metal powder |
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