GB403469A - Improved process for the production of finely divided metals by precipitation of their salts by means of metals in powdered form - Google Patents
Improved process for the production of finely divided metals by precipitation of their salts by means of metals in powdered formInfo
- Publication number
- GB403469A GB403469A GB22671/32A GB2267132A GB403469A GB 403469 A GB403469 A GB 403469A GB 22671/32 A GB22671/32 A GB 22671/32A GB 2267132 A GB2267132 A GB 2267132A GB 403469 A GB403469 A GB 403469A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metals
- aluminium
- precipitated
- different
- precipitation
- 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
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Copper and other metals more electropositive than copper, particularly nickel and iron, are precipitated from solutions by means of powdered aluminium in the presence of activating agents which wholly or partly remove the oxide layer from the surface of the aluminium, such as hydrochloric acid or a chloride. The aluminium may be alloyed with more electro-positive metals such as calcium. Precipitates of varying fineness or coarseness may be obtained by using aluminium of corresponding size. In some cases, the solution may be hot; for example lead may be precipitated at 40-50 DEG C. The precipitant may be added in successive small quantities. Different metals may be precipitated successively from mixed solutions by successive applications of different activating agents, or of different amounts of the same agent, or of different temperatures.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR403469X | 1931-08-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB403469A true GB403469A (en) | 1933-12-28 |
Family
ID=8897004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22671/32A Expired GB403469A (en) | 1931-08-14 | 1932-08-12 | Improved process for the production of finely divided metals by precipitation of their salts by means of metals in powdered form |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB403469A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4191557A (en) * | 1977-03-25 | 1980-03-04 | Aluminum Company Of America | Production of metallic powders |
-
1932
- 1932-08-12 GB GB22671/32A patent/GB403469A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4191557A (en) * | 1977-03-25 | 1980-03-04 | Aluminum Company Of America | Production of metallic powders |
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