GB1343004A - Silver powders - Google Patents
Silver powdersInfo
- Publication number
- GB1343004A GB1343004A GB1343004DA GB1343004A GB 1343004 A GB1343004 A GB 1343004A GB 1343004D A GB1343004D A GB 1343004DA GB 1343004 A GB1343004 A GB 1343004A
- Authority
- GB
- United Kingdom
- Prior art keywords
- silver
- silver powders
- powder
- hcho
- khco
- 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
-
- 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
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals by wet processes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
1343004 Silver E I DU PONT DE NEMOURS & CO 15 June 1972 28119/72 Heading C1A [Also in Division C7] Silver powder containing Cu in the range 1-1000 ppm. is produced by dissolving Ag and the required amount of Cu in HNO 3 , and adding an alkali, e.g. Na 2 CO 3 to precipitate the Ag and Cu, e.g. as carbonates. Other suitable precipitating agents include K 2 CO 3 , NaHCO 3 , KHCO 3 , NaOH, KOH or mixtures thereof. The precipitated compounds are then reduced to a mixture of Ag and Cu powder with, e.g. a 10-60% (by wt.) aqueous solution of HCHO.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2811972 | 1972-06-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1343004A true GB1343004A (en) | 1974-01-10 |
Family
ID=10270579
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1343004D Expired GB1343004A (en) | 1972-06-15 | 1972-06-15 | Silver powders |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1343004A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4456474A (en) * | 1983-05-05 | 1984-06-26 | Chemet Corporation | Method of making fine silver powder |
US4456473A (en) * | 1983-05-05 | 1984-06-26 | Chemet Corporation | Method of making silver powder |
-
1972
- 1972-06-15 GB GB1343004D patent/GB1343004A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4456474A (en) * | 1983-05-05 | 1984-06-26 | Chemet Corporation | Method of making fine silver powder |
US4456473A (en) * | 1983-05-05 | 1984-06-26 | Chemet Corporation | Method of making silver powder |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1417088A (en) | Photopolymerisable compositions | |
GB1535295A (en) | Process for producing hydrogen | |
GB1495365A (en) | Process for preparing stable sodium percarbonate | |
GB1066799A (en) | Method of preparation of powdered silver | |
ES421313A1 (en) | Cycloheptaamylose-silver alkanol ammine complex compound | |
GB1343004A (en) | Silver powders | |
GB1328088A (en) | Solubilized alginic materials | |
GB1354394A (en) | Process for producing ferromagnetic chromium dioxide | |
GB760198A (en) | Improvements in or relating to the stabilization of hydrazine or aqueous solutions thereof | |
GB1407592A (en) | Electrodeposition of ruthenium | |
GB1456476A (en) | Process for the production of silver -ii- oxide for galvanic cells | |
GB1428348A (en) | Method of producing triaminoguanidine nitrate | |
GB1518519A (en) | Production of silver powders | |
ES415675A1 (en) | Crystalline monohydrates of sodium and potassium cephalexin | |
GB1221038A (en) | Improvements in effervescent tablet compositions | |
GB1372019A (en) | Preparation of pyrosulphates | |
GB1285252A (en) | Modified-morphology hydromagnesite and process for manufacturing same | |
GB1309288A (en) | Process for the production of nickelous hydroxide | |
GB1487012A (en) | Preparation of very fine magnetite powder | |
GB1368680A (en) | Adriamycin derivatives | |
GB1206195A (en) | Preparation of fire-extinguishing material | |
GB1514807A (en) | Process for preparing sulphur dioxide | |
GB781440A (en) | Improvements in the manufacture of silver azide | |
GB1367435A (en) | Production of ypsilon-amino-beta-hydroxybutanoic acid | |
GB1075286A (en) | Process for producing potassium azide |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PE20 | Patent expired after termination of 20 years |