GB598660A - Improvements in and relating to the production of iron powder - Google Patents
Improvements in and relating to the production of iron powderInfo
- Publication number
- GB598660A GB598660A GB2307644A GB2307644A GB598660A GB 598660 A GB598660 A GB 598660A GB 2307644 A GB2307644 A GB 2307644A GB 2307644 A GB2307644 A GB 2307644A GB 598660 A GB598660 A GB 598660A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquor
- produced
- iron powder
- crystals
- iron
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title abstract 10
- 229910052742 iron Inorganic materials 0.000 title abstract 5
- 239000000843 powder Substances 0.000 title abstract 5
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N HCl Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 2
- NMCUIPGRVMDVDB-UHFFFAOYSA-L Iron(II) chloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 abstract 2
- 238000002425 crystallisation Methods 0.000 abstract 2
- 230000005712 crystallization Effects 0.000 abstract 2
- 150000004683 dihydrates Chemical class 0.000 abstract 2
- 229960002089 ferrous chloride Drugs 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- 150000004685 tetrahydrates Chemical group 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- NCNCGGDMXMBVIA-UHFFFAOYSA-L Iron(II) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 abstract 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 1
- 239000003153 chemical reaction reagent Substances 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 150000004677 hydrates Chemical class 0.000 abstract 1
- 229910052739 hydrogen Inorganic materials 0.000 abstract 1
- 239000001257 hydrogen Substances 0.000 abstract 1
- 125000004435 hydrogen atoms Chemical class [H]* 0.000 abstract 1
- 235000014413 iron hydroxide Nutrition 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000003801 milling Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000001264 neutralization Effects 0.000 abstract 1
- 230000001590 oxidative Effects 0.000 abstract 1
- 235000021110 pickles Nutrition 0.000 abstract 1
- 238000001694 spray drying Methods 0.000 abstract 1
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)
- Compounds Of Iron (AREA)
Abstract
Ferrous chloride crystals used for the production of iron powder are produced from liquor, e.g., spent pickle liquor which usually contains free hydrochloric acid by neutralising the liquor with scrap iron or other reagent such as ammonia or iron hydroxide and recovering the chloride as crystals from the liquor by spray drying or evaporation and crystallisation. The crystals are obtained in the dihydrate or tetrahydrate forms or a mixture of these hydrates, the preferred form being the dihydrate which is produced directly by crystallisation at above 70 DEG C. or by rapid drying of the tetra-hydrate which is provided at temperatures below 70 DEG C.ALSO:Iron powder is produced by subjecting ferrous chloride crystals to heat treatment at 500-600 DEG C. in a reducing atmosphere of hydrogen, bringing the iron powder so produced into intimate association with water to remove unreduced material, e.g. by milling it in the presence of water and then densifying the powder by heat-treatment in a reducing or non-oxidizing atmosphere at 600-850 DEG C.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB598660A true GB598660A (en) | 1948-02-24 |
Family
ID=1737413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2307644A Expired GB598660A (en) | 1945-11-13 | Improvements in and relating to the production of iron powder |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB598660A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2701761A (en) * | 1951-05-05 | 1955-02-08 | Henry L Crowley & Company Inc | Integrated cyclic process for producing metallic iron from iron oxide-containing material |
| US2762700A (en) * | 1949-08-23 | 1956-09-11 | Richard J Brooks | Production of ferrous chloride and metallic iron powder |
-
1945
- 1945-11-13 GB GB2307644A patent/GB598660A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2762700A (en) * | 1949-08-23 | 1956-09-11 | Richard J Brooks | Production of ferrous chloride and metallic iron powder |
| US2701761A (en) * | 1951-05-05 | 1955-02-08 | Henry L Crowley & Company Inc | Integrated cyclic process for producing metallic iron from iron oxide-containing material |
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