RU2003113772A - METHOD FOR PRODUCING SILVER POWDER - Google Patents

METHOD FOR PRODUCING SILVER POWDER Download PDF

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Publication number
RU2003113772A
RU2003113772A RU2003113772/02A RU2003113772A RU2003113772A RU 2003113772 A RU2003113772 A RU 2003113772A RU 2003113772/02 A RU2003113772/02 A RU 2003113772/02A RU 2003113772 A RU2003113772 A RU 2003113772A RU 2003113772 A RU2003113772 A RU 2003113772A
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RU
Russia
Prior art keywords
silver
chloride
solution
suspension
carried out
Prior art date
Application number
RU2003113772/02A
Other languages
Russian (ru)
Other versions
RU2283208C2 (en
Inventor
Елена Владимировна Бердникова (RU)
Елена Владимировна Бердникова
Александр Федорович Волковский (RU)
Александр Федорович Волковский
Original Assignee
Елена Владимировна Бердникова (RU)
Елена Владимировна Бердникова
Александр Федорович Волковский (RU)
Александр Федорович Волковский
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.)
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Publication date
Application filed by Елена Владимировна Бердникова (RU), Елена Владимировна Бердникова, Александр Федорович Волковский (RU), Александр Федорович Волковский filed Critical Елена Владимировна Бердникова (RU)
Priority to RU2003113772/02A priority Critical patent/RU2283208C2/en
Publication of RU2003113772A publication Critical patent/RU2003113772A/en
Application granted granted Critical
Publication of RU2283208C2 publication Critical patent/RU2283208C2/en

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    • 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

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  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Claims (2)

1. Способ получения порошка серебра, включающий осаждение хлорида серебра из раствора нитрата серебра водорастворимым хлоридом, обработку суспензии, восстановление серебра из суспензии, промывку, сушку, просев, отличающийся тем, что хлорид серебра осаждают при температуре 20-50°С при рН 1-5 из раствора нитрата серебра водорастворимым хлоридом, маточный раствор декантируют, суспензию свежеосажденного хлорида серебра обрабатывают раствором гидроксида щелочного металла с концентрацией в реакционной среде 12-200 г/л, восстановление серебра проводят формалином при температуре 40-90°С в течение 10-60 минут, перемешивание осуществляют до прекращения газовыделения, осадок серебра последовательно промывают деионизованной водой, нагретой до 40-70°С, раствором аммиака, деионизованной водой до проводимости не более 20 мкСм/см, осадок сушат при температуре 70-120°С и просеивают через сито с размером ячейки 250 мкм.1. A method of producing silver powder, including the precipitation of silver chloride from a solution of silver nitrate with water-soluble chloride, processing the suspension, recovering silver from the suspension, washing, drying, sieving, characterized in that silver chloride is precipitated at a temperature of 20-50 ° C at pH 1- 5 from a solution of silver nitrate with water-soluble chloride, the mother liquor is decanted, a suspension of freshly precipitated silver chloride is treated with an alkali metal hydroxide solution with a concentration in the reaction medium of 12-200 g / l, silver reduction occurs dressed with formalin at a temperature of 40-90 ° C for 10-60 minutes, stirring is carried out until gas evolution ceases, the silver precipitate is washed successively with deionized water heated to 40-70 ° C, ammonia solution, deionized water to a conductivity of not more than 20 μS / cm , the precipitate is dried at a temperature of 70-120 ° C and sieved through a sieve with a mesh size of 250 μm. 2. Способ получения порошка серебра по п.1, отличающийся тем, что восстановление серебра проводят формиатом аммония или формиатом натрия, а промывки осуществляют раствором аммиака с концентрацией 2-10%.2. The method of producing silver powder according to claim 1, characterized in that the reduction of silver is carried out with ammonium formate or sodium formate, and the washing is carried out with an ammonia solution with a concentration of 2-10%.
RU2003113772/02A 2003-05-12 2003-05-12 Silver powder production method RU2283208C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2003113772/02A RU2283208C2 (en) 2003-05-12 2003-05-12 Silver powder production method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2003113772/02A RU2283208C2 (en) 2003-05-12 2003-05-12 Silver powder production method

Publications (2)

Publication Number Publication Date
RU2003113772A true RU2003113772A (en) 2005-01-10
RU2283208C2 RU2283208C2 (en) 2006-09-10

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Family Applications (1)

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RU2003113772/02A RU2283208C2 (en) 2003-05-12 2003-05-12 Silver powder production method

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RU (1) RU2283208C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106041116A (en) * 2016-05-27 2016-10-26 厦门大学 Method for preparing silver nanoparticles by adsorbing and reducing silver-ammonia solution through activated sludge

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102303125B (en) * 2011-09-20 2013-05-22 南京林业大学 Method for preparing nano silver powder in viscous medium
RU2629080C1 (en) * 2016-02-24 2017-08-24 Республиканское Государственное Предприятие На Праве Хозяйственного Ведения "Казахский Национальный Университет Имени Аль-Фараби" Method for obtaining silver chloride particles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106041116A (en) * 2016-05-27 2016-10-26 厦门大学 Method for preparing silver nanoparticles by adsorbing and reducing silver-ammonia solution through activated sludge

Also Published As

Publication number Publication date
RU2283208C2 (en) 2006-09-10

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MM4A The patent is invalid due to non-payment of fees

Effective date: 20070513