FR2239533A1 - Nickel- or nickel iron alloy- powders mfr - by redn. of oxalates with hydrogen in an autoclave - Google Patents

Nickel- or nickel iron alloy- powders mfr - by redn. of oxalates with hydrogen in an autoclave

Info

Publication number
FR2239533A1
FR2239533A1 FR7426840A FR7426840A FR2239533A1 FR 2239533 A1 FR2239533 A1 FR 2239533A1 FR 7426840 A FR7426840 A FR 7426840A FR 7426840 A FR7426840 A FR 7426840A FR 2239533 A1 FR2239533 A1 FR 2239533A1
Authority
FR
France
Prior art keywords
nickel
autoclave
redn
hydrogen
soln
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.)
Granted
Application number
FR7426840A
Other languages
French (fr)
Other versions
FR2239533B1 (en
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.)
NICKEL FR
Original Assignee
NICKEL FR
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 NICKEL FR filed Critical NICKEL FR
Publication of FR2239533A1 publication Critical patent/FR2239533A1/en
Application granted granted Critical
Publication of FR2239533B1 publication Critical patent/FR2239533B1/fr
Granted 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
    • 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)
  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

In the process, an alkaline oxalate is reacted with an aq. soln of a nickel salt, or with an aq. soln of a Ni salt plus an Fe salt, and the ppte obtd is reduced in an autoclave with H2, an alkaline hydroxide, and a small amt of alkali carbonate; in the case of Ni-Fe alloy, the powder obtd from the autocalve is dried and reduced in dry H2. The aq. soln pref. contains 50-250g/l Ni or Ni plus Fe as chlorides, sulphates and/or nitrates, and the autoclave treatment 1-5 hrs at 130-180 degrees C using an initial H2 press. of 4-40 bars. The amt of alkali hydroxide used is 1-3 wt. % less than the stoichiometric amt while the quantity of alkali carbonate is 6-15 wt. % of the alkali hydroxide. Ni or Ni-Fe can be used as a catalyst. The dry redn of Ni-Fe powder pref. consists of 1/2-1 hr. at 400-800 degrees C in hydrogen. The process results in a yield of virtually 100%.
FR7426840A 1973-08-02 1974-08-02 Nickel- or nickel iron alloy- powders mfr - by redn. of oxalates with hydrogen in an autoclave Granted FR2239533A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU68146A LU68146A1 (en) 1973-08-02 1973-08-02

Publications (2)

Publication Number Publication Date
FR2239533A1 true FR2239533A1 (en) 1975-02-28
FR2239533B1 FR2239533B1 (en) 1976-12-31

Family

ID=19727425

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7426840A Granted FR2239533A1 (en) 1973-08-02 1974-08-02 Nickel- or nickel iron alloy- powders mfr - by redn. of oxalates with hydrogen in an autoclave

Country Status (2)

Country Link
FR (1) FR2239533A1 (en)
LU (1) LU68146A1 (en)

Also Published As

Publication number Publication date
LU68146A1 (en) 1975-05-21
FR2239533B1 (en) 1976-12-31

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Legal Events

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