GB662051A - Improved chemical process for producing powdered iron - Google Patents
Improved chemical process for producing powdered ironInfo
- Publication number
- GB662051A GB662051A GB218/49A GB21849A GB662051A GB 662051 A GB662051 A GB 662051A GB 218/49 A GB218/49 A GB 218/49A GB 21849 A GB21849 A GB 21849A GB 662051 A GB662051 A GB 662051A
- Authority
- GB
- United Kingdom
- Prior art keywords
- iron
- ferrous chloride
- hydrochloric acid
- oxide
- precipitated
- 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
-
- 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
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/20—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds
- B22F9/22—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from solid metal compounds using gaseous reductors
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
In the production of iron powder, an aqueous ferrous chloride solution is produced by dissolving iron or an iron compound in hydrochloric acid, solid ferrous chloride is precipitated by gaseous hydrochloric acid, the precipitated salt dehydrated, converted to oxide, and reduced to spongy iron which is then ground and sifted. The ferrous chloride may be produced by dissolving iron chips or ore in hydrochloric acid, or spent pickling liquor may be used, complete reduction, if necessary, being obtained by passing the solution over iron chips. The ferrous chloride is then precipitated by hydrochloric acid gas under conditions producing the tetrahydrate, i.e. at tempertaures above 156 DEG F. the tetrahydrate dehydrated and converted to oxide by treatment with superheated steam at 400 to 600 DEG F. The strongly acid liquor obtained after precipitating the ferrous chloride may be used for the solution of more iron and the hydrochloric acid gas obtained during the conversion to oxide may be used to precipitate the ferrous chloride. The iron oxide may be reduced to iron sponge by heating to 1400 to 1600 DEG F in hydrogen or up to 1800 DEG F in producer gas.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH662051X | 1948-01-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB662051A true GB662051A (en) | 1951-11-28 |
Family
ID=4526980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB218/49A Expired GB662051A (en) | 1948-01-06 | 1949-01-04 | Improved chemical process for producing powdered iron |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB662051A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1647344A1 (en) * | 2004-10-13 | 2006-04-19 | Metco GmbH | Method for producing iron or steel powder for use in metal injection moulding |
| EP3231537A1 (en) * | 2016-03-25 | 2017-10-18 | Borcelik Celik San. Tic. A.S. | Production of pure iron powder from pickling solutions |
| CN112969544A (en) * | 2018-11-05 | 2021-06-15 | 株式会社Posco | Method for preparing needle-shaped or rod-shaped porous iron powder and needle-shaped or rod-shaped porous iron powder prepared by same |
| CN114875241A (en) * | 2022-04-07 | 2022-08-09 | 江西理工大学 | Method for comprehensively recovering valuable metals from neodymium iron boron waste acid leaching residues under sulfuric acid system |
| CN115074530A (en) * | 2022-04-07 | 2022-09-20 | 江西理工大学 | Method for comprehensively recovering valuable metals from neodymium iron boron waste acid leaching residues under hydrochloric acid system |
-
1949
- 1949-01-04 GB GB218/49A patent/GB662051A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1647344A1 (en) * | 2004-10-13 | 2006-04-19 | Metco GmbH | Method for producing iron or steel powder for use in metal injection moulding |
| EP3231537A1 (en) * | 2016-03-25 | 2017-10-18 | Borcelik Celik San. Tic. A.S. | Production of pure iron powder from pickling solutions |
| CN112969544A (en) * | 2018-11-05 | 2021-06-15 | 株式会社Posco | Method for preparing needle-shaped or rod-shaped porous iron powder and needle-shaped or rod-shaped porous iron powder prepared by same |
| EP3878580A4 (en) * | 2018-11-05 | 2021-12-29 | Posco | Method for manufacturing needle-shaped or rod-shaped porous iron powder and needle-shaped or rod-shaped porous iron powder manufactured thereby |
| CN114875241A (en) * | 2022-04-07 | 2022-08-09 | 江西理工大学 | Method for comprehensively recovering valuable metals from neodymium iron boron waste acid leaching residues under sulfuric acid system |
| CN115074530A (en) * | 2022-04-07 | 2022-09-20 | 江西理工大学 | Method for comprehensively recovering valuable metals from neodymium iron boron waste acid leaching residues under hydrochloric acid system |
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