GB1355444A - Production of gold powder - Google Patents

Production of gold powder

Info

Publication number
GB1355444A
GB1355444A GB4874671A GB1355444DA GB1355444A GB 1355444 A GB1355444 A GB 1355444A GB 4874671 A GB4874671 A GB 4874671A GB 1355444D A GB1355444D A GB 1355444DA GB 1355444 A GB1355444 A GB 1355444A
Authority
GB
United Kingdom
Prior art keywords
gold
gold powder
spheres
oxalic acid
solution
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
GB4874671A
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 GB1355444A publication Critical patent/GB1355444A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G7/00—Compounds of gold
    • C01G7/003—Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
    • 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
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/26—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
    • C22B3/262—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds using alcohols or phenols
    • 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
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/26—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
    • C22B3/32—Carboxylic acids
    • C22B3/322—Oxalic acids
    • 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
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/26—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
    • C22B3/40—Mixtures
    • C22B3/402—Mixtures of acyclic or carbocyclic compounds of different types
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Parts Printed On Printed Circuit Boards (AREA)

Abstract

1355444 Preparing gold powder E I DU PONT DE NEMOURS & CO 20 Oct 1971 48746/71 Heading C7D A process for preparing gold powder having a controlled particle size and shape comprises reducing a gold salt in solution with a mixture of hydroquinone or bromochloro- or lower alkylsubstituted hydroquinones and oxalic acid or water-soluble salts of oxalic acid in the presence of a protective colloid at temperatures between 20‹C and 100‹C. The protective colloid is generally a water-soluble gum, e.g. gum arabic, used in concentration of 1 to 15 gms/litre, and a defoaming agent e.g. octyl alcohol may also be utilized; alternatively the reaction solution may be defoamed mechanically, electrically or ultrasonically. If gold chloride is added rapidly, at greater than 500c.c. /minute, to the reducing agents, mixtures of flake and spheres are produced; slower addition provides essentially only spheres. The gold salt solution should preferably contain 1 to 50% by weight of gold, and an excess of reducing agent should be present. Metallizing compositions A metallizing composition used in the formation of printed circuits comprises 84% gold powder, 2% glass frit composed of lead oxide and boron trioxide and 14% organic liquid vehicle. The composition is applied to a substrate and fired.
GB4874671A 1971-10-20 1971-10-20 Production of gold powder Expired GB1355444A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4874671 1971-10-20

Publications (1)

Publication Number Publication Date
GB1355444A true GB1355444A (en) 1974-06-05

Family

ID=10449766

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4874671A Expired GB1355444A (en) 1971-10-20 1971-10-20 Production of gold powder

Country Status (1)

Country Link
GB (1) GB1355444A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115592125A (en) * 2022-09-26 2023-01-13 昆明贵研新材料科技有限公司（Cn） Preparation method of gold powder with coexisting micron tablets and submicron particles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115592125A (en) * 2022-09-26 2023-01-13 昆明贵研新材料科技有限公司（Cn） Preparation method of gold powder with coexisting micron tablets and submicron particles
CN115592125B (en) * 2022-09-26 2024-02-02 昆明贵研新材料科技有限公司 Preparation method of gold powder with coexistence of micron sheets and submicron particles

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee