RU2008109262A - METHOD FOR PRODUCING SILVER - Google Patents
METHOD FOR PRODUCING SILVER Download PDFInfo
- Publication number
- RU2008109262A RU2008109262A RU2008109262/02A RU2008109262A RU2008109262A RU 2008109262 A RU2008109262 A RU 2008109262A RU 2008109262/02 A RU2008109262/02 A RU 2008109262/02A RU 2008109262 A RU2008109262 A RU 2008109262A RU 2008109262 A RU2008109262 A RU 2008109262A
- Authority
- RU
- Russia
- Prior art keywords
- ammonia
- silver
- solution
- mixture
- nitrate
- Prior art date
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Classifications
-
- 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
Abstract
1. Способ получения серебра, включающий растворение серебро- и медьсодержащего материала в азотной кислоте, смешение продукта, содержащего нитраты серебра и меди, с водным раствором аммиака, фильтрование раствора, образовавшегося из аммиачно-нитратной смеси, осаждение серебра из аммиачно-нитратного фильтрата путем его восстановительной обработки, отмывку восстановленного серебра, отличающийся тем, что смешение с водным раствором аммиака ведут в две стадии: вначале до установления определенного значения pH смеси, а затем, после фильтрования, определенного соотношения между количествами аммиака и серебра в ней, восстановительную обработку аммиачно-нитратного раствора ведут при нагревании с использованием в качестве восстановителей муравьиной кислоты и (или) сернистокислого натрия, для отмывки восстановленного серебра используют раствор соляной кислоты. ! 2. Способ по п.1, отличающийся тем, что на первой стадии добавления водного раствора аммиака к раствору pH смеси задают в пределах 3-6. ! 3. Способ по любому из пп.1 и 2, отличающийся тем, что весовое отношение массы аммиака к массе серебра в растворе, подлежащем восстановительной обработке, задают в пределах 0,315-0,41.1. A method for producing silver, including dissolving silver- and copper-containing material in nitric acid, mixing a product containing silver and copper nitrates with an aqueous solution of ammonia, filtering a solution formed from an ammonia-nitrate mixture, precipitating silver from an ammonia-nitrate filtrate by reduction treatment, washing of reduced silver, characterized in that mixing with an aqueous solution of ammonia is carried out in two stages: first, until a certain pH value of the mixture is established, and then, after filtration, a certain ratio between the amounts of ammonia and silver in it, the reduction treatment of ammonia-nitrate the solution is carried out when heated using formic acid and (or) sodium sulphide as reducing agents; a solution of hydrochloric acid is used to wash the reduced silver. ! 2. The method according to claim 1, characterized in that in the first stage of adding an aqueous ammonia solution to the solution, the pH of the mixture is set in the range of 3-6. ! 3. A method according to any one of claims 1 and 2, characterized in that the weight ratio of the mass of ammonia to the mass of silver in the solution to be reduced is set in the range of 0.315-0.41.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2008109262A RU2378398C2 (en) | 2008-03-11 | 2008-03-11 | Method of silver receiving |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2008109262A RU2378398C2 (en) | 2008-03-11 | 2008-03-11 | Method of silver receiving |
Publications (2)
Publication Number | Publication Date |
---|---|
RU2008109262A true RU2008109262A (en) | 2009-09-20 |
RU2378398C2 RU2378398C2 (en) | 2010-01-10 |
Family
ID=41167376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU2008109262A RU2378398C2 (en) | 2008-03-11 | 2008-03-11 | Method of silver receiving |
Country Status (1)
Country | Link |
---|---|
RU (1) | RU2378398C2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2514554C2 (en) * | 2012-05-11 | 2014-04-27 | Федеральное государственное бюджетное учреждение науки Институт неорганической химии им. А.В. Николаева Сибирского отделения Российской академии наук (ИНХ СО РАН) | Method of cleaning of silver-bearing material |
RU2670117C2 (en) * | 2013-09-27 | 2018-10-18 | Текникас Реунидас, С.А. | Process for the selective recovery of lead and silver and carbonate lead and silver concentrate, obtained by the method above |
RU2680552C1 (en) * | 2018-03-30 | 2019-02-22 | Акционерное общество "Уралэлектромедь" | Method for producing silver and platinum group metals |
CN115612856A (en) * | 2021-07-14 | 2023-01-17 | 谷育英 | Method for recovering metallic silver from silver-containing waste liquid |
-
2008
- 2008-03-11 RU RU2008109262A patent/RU2378398C2/en not_active IP Right Cessation
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2514554C2 (en) * | 2012-05-11 | 2014-04-27 | Федеральное государственное бюджетное учреждение науки Институт неорганической химии им. А.В. Николаева Сибирского отделения Российской академии наук (ИНХ СО РАН) | Method of cleaning of silver-bearing material |
RU2670117C2 (en) * | 2013-09-27 | 2018-10-18 | Текникас Реунидас, С.А. | Process for the selective recovery of lead and silver and carbonate lead and silver concentrate, obtained by the method above |
RU2680552C1 (en) * | 2018-03-30 | 2019-02-22 | Акционерное общество "Уралэлектромедь" | Method for producing silver and platinum group metals |
CN115612856A (en) * | 2021-07-14 | 2023-01-17 | 谷育英 | Method for recovering metallic silver from silver-containing waste liquid |
Also Published As
Publication number | Publication date |
---|---|
RU2378398C2 (en) | 2010-01-10 |
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MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20110312 |