DE880283C - Process for the production of the finest heavy metal powders - Google Patents

Process for the production of the finest heavy metal powders

Info

Publication number
DE880283C
DE880283C DEM8984A DEM0008984A DE880283C DE 880283 C DE880283 C DE 880283C DE M8984 A DEM8984 A DE M8984A DE M0008984 A DEM0008984 A DE M0008984A DE 880283 C DE880283 C DE 880283C
Authority
DE
Germany
Prior art keywords
heavy metal
production
finest
metal powders
hydrogen
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
DEM8984A
Other languages
German (de)
Inventor
Gerhard Dr-Ing Naeser
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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 Mannesmann AG filed Critical Mannesmann AG
Priority to DEM8984A priority Critical patent/DE880283C/en
Application granted granted Critical
Publication of DE880283C publication Critical patent/DE880283C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C22B23/00—Obtaining nickel or cobalt
    • C22B23/02—Obtaining nickel or cobalt by dry processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Description

Verfahren zur Herstellung von feinsten Schwermetallpulvern Feinste Schwermetallpulver, besonders Eisen- und Nickelpulver, die zur Herstellung von Katalysatoren oder für Dauermagnete gebraucht werden, werden durch Reduktion von ameisensauren Salzen mittels Wasserstoff oder durch Herauslösen des Aluminiums aus dem betreffenden Mischkristall hergestellt. Es ist auch bekannt, durch Reduktion von Schwermetallchloriden, die billiger sind als ameisensaure Salze, mittels Wasserstoff Eisen- und Nickelpulver zu gewinnen. Diese Pulver fallen in Form gut ausgebildeter Kristalle an und besitzen daher keine aktiven Eigenschaften; sie sind weder als Katalysatoren noch als Grundstoff für Weicheisendauermagnete geeignet.Process for the production of the finest heavy metal powders Finest Heavy metal powder, especially iron and nickel powder, used in the manufacture of catalysts or for permanent magnets are used by reducing formic acid Salting by means of hydrogen or by leaching out the aluminum from the relevant Solid solution produced. It is also known to reduce heavy metal chlorides, which are cheaper than formic acid salts, using hydrogen, iron and nickel powder to win. These powders are obtained in the form of well-developed crystals and have therefore no active properties; they are neither as catalysts nor as raw materials suitable for soft iron permanent magnets.

Erfindungsgemäß werden die Schwermetallchloride mit Alkali- oder Erdalkalisalzen, vorzugsweise Chloriden, gemischt und geschmolzen. Behandelt man ein derartiges Erzeugnis oder das geschmolzene Salzgemisch mit Wasserstoff, so bilden sich äußerst feinverteilte, hochaktive Metallpulver.According to the heavy metal chlorides with alkali or alkaline earth salts, preferably chlorides, mixed and melted. If you treat such a product or the molten salt mixture with hydrogen, extremely finely divided, highly active metal powder.

Beispiel Ein Gemisch aus i Mol FeC12 und i Mol Na Cl wird bei 420' geschmolzen und Wasserstoff eingeleitet. Es bildet sich Salzsäure, und die Salzschmelze färbt sich durch feinst ausgeschiedenes Eisen schwarz. Nach dem Erkalten wird der Rückstand in Wasser gelöst und das Eisenpulver abfiltriert. Mischt man dem getrockneten Pulver einige Hundertteile eines Kunststoffes zu und preßt Teile daraus, so erhält man Weicheisendauermagnete.Example A mixture of 1 mole FeC12 and 1 mole Na Cl is melted and hydrogen introduced. Hydrochloric acid and molten salt are formed turns black due to the finely excreted iron. After cooling down, the The residue was dissolved in water and the iron powder was filtered off. If you mix the dried Powder a few hundred parts of a plastic and presses parts out of it, so it gets man soft iron permanent magnets.

Besonders geeignet sind möglichst tief schmelzende Salzgemische, z. B. aus NaCl . KCl . FeCl2. Das FeCl2 kann entsprechend der fortschreitenden Reduktion laufend nachgegeben werden. Das Verfahren ist besonders wirtschaftlich bei Verwendung von Eisenchlorid aus Chloridabfallbeizen, da man dabei außer der Herstellung eines wertvollen Eisenpulvers die Salzsäure wiedergewinnen kann.Salt mixtures which melt as low as possible are particularly suitable, e.g. B. from NaCl. KCl. FeCl2. The FeCl2 can according to the progressive reduction are continuously given in. The process is particularly economical when using ferric chloride from chloride waste pickling, because besides the Manufacture of a valuable iron powder that can recover hydrochloric acid.

Claims (2)

PATENTANSPRÜCHE: z. Verfahren zur Herstellung aktiver Schwermetallpulver aus Schwermetallchloriden mittels Wasserstoff, insbesondere zur Herstellung von Katalysatoren und Dauermagneten, dadurch gekennzeichnet, daß den Schwermetallchloriden Alkali- oder Erdalkalisalze, vorzugsweise Chloride, zugemischt werden, die Mischung geschmolzen und in flüssigem oder festem Zustand reduziert wird, zweckmäßig mit reduzierenden Gasen, vorzugsweise Wasserstoff. PATENT CLAIMS: e.g. Process for the production of active heavy metal powders from heavy metal chlorides by means of hydrogen, in particular for the production of Catalysts and permanent magnets, characterized in that the heavy metal chlorides Alkali or alkaline earth salts, preferably chlorides, are added to the mixture is melted and reduced in the liquid or solid state, expediently with reducing gases, preferably hydrogen. 2. Verfahren nach Anspruch r, gekennzeichnet durch die Verwendung von Chloridabfallbeizen.2. The method according to claim r, characterized through the use of waste chloride pickles.
DEM8984A 1951-03-25 1951-03-25 Process for the production of the finest heavy metal powders Expired DE880283C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM8984A DE880283C (en) 1951-03-25 1951-03-25 Process for the production of the finest heavy metal powders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM8984A DE880283C (en) 1951-03-25 1951-03-25 Process for the production of the finest heavy metal powders

Publications (1)

Publication Number Publication Date
DE880283C true DE880283C (en) 1953-06-22

Family

ID=7294450

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM8984A Expired DE880283C (en) 1951-03-25 1951-03-25 Process for the production of the finest heavy metal powders

Country Status (1)

Country Link
DE (1) DE880283C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE933752C (en) * 1953-01-16 1955-10-06 Degussa Process and device for the production of finely divided metal oxides

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE933752C (en) * 1953-01-16 1955-10-06 Degussa Process and device for the production of finely divided metal oxides

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