GB1343004A - Silver powders - Google Patents

Silver powders

Info

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
Application number
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB1343004A publication Critical patent/GB1343004A/en
Expired legal-status Critical Current

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.
GB1343004D 1972-06-15 1972-06-15 Silver powders Expired GB1343004A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years