RU2005128024A - METHOD FOR PRODUCING SILVER FROM ITS CHLORIDES BY RESTORING GAS-HYDROGEN HYDROGEN - Google Patents

METHOD FOR PRODUCING SILVER FROM ITS CHLORIDES BY RESTORING GAS-HYDROGEN HYDROGEN Download PDF

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Publication number
RU2005128024A
RU2005128024A RU2005128024/02A RU2005128024A RU2005128024A RU 2005128024 A RU2005128024 A RU 2005128024A RU 2005128024/02 A RU2005128024/02 A RU 2005128024/02A RU 2005128024 A RU2005128024 A RU 2005128024A RU 2005128024 A RU2005128024 A RU 2005128024A
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RU
Russia
Prior art keywords
temperature
hydrogen
recovery
chlorides
silver chloride
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RU2005128024/02A
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Russian (ru)
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RU2309998C2 (en
Inventor
Виктор Николаевич Ермилин (RU)
Виктор Николаевич Ермилин
Сергей Леонидович Андреев (RU)
Сергей Леонидович Андреев
Юрий Александрович Воронин (RU)
Юрий Александрович Воронин
Юрий Викторович Литвинов (RU)
Юрий Викторович Литвинов
Павел Петрович Погодин (RU)
Павел Петрович Погодин
Original Assignee
Общество с ограниченной ответственностью НАУЧНО-ПРОИЗВОДСТВЕННАЯ ФИРМА "ГЕРО" (ООО НПФ "ГЕРО") (RU)
Общество с ограниченной ответственностью НАУЧНО-ПРОИЗВОДСТВЕННАЯ ФИРМА "ГЕРО" (ООО НПФ "ГЕРО")
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Application filed by Общество с ограниченной ответственностью НАУЧНО-ПРОИЗВОДСТВЕННАЯ ФИРМА "ГЕРО" (ООО НПФ "ГЕРО") (RU), Общество с ограниченной ответственностью НАУЧНО-ПРОИЗВОДСТВЕННАЯ ФИРМА "ГЕРО" (ООО НПФ "ГЕРО") filed Critical Общество с ограниченной ответственностью НАУЧНО-ПРОИЗВОДСТВЕННАЯ ФИРМА "ГЕРО" (ООО НПФ "ГЕРО") (RU)
Priority to RU2005128024/02A priority Critical patent/RU2309998C2/en
Publication of RU2005128024A publication Critical patent/RU2005128024A/en
Application granted granted Critical
Publication of RU2309998C2 publication Critical patent/RU2309998C2/en

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  • Chemical Vapour Deposition (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Claims (5)

1. Способ получения серебра из его хлорида, включающий восстановление хлорида серебра нагреванием и выдержкой в токе газообразного водорода, нагретого до температуры более 400°С, барботаж газа, выходящего из реакционной камеры через воду, и получение водного раствора HCl, отличающийся тем, что восстановление ведут при подъеме температуры с промежуточными выдержками при температуре 450±5°С - 15-25 мин, после чего осуществляют подъем температуры со скоростью 2-4°С в минуту до температуры 460±5°С и выдержку 7-15 мин, после чего осуществляют подъем температуры с возрастанием 3-7°С в минуту до достижения температуры 560±10°С.1. The method of producing silver from its chloride, including the recovery of silver chloride by heating and soaking in a stream of hydrogen gas heated to a temperature of more than 400 ° C, bubbling the gas leaving the reaction chamber through water, and obtaining an aqueous HCl solution, characterized in that the recovery when the temperature rises with intermediate holdings at a temperature of 450 ± 5 ° С - 15-25 minutes, then the temperature is raised at a speed of 2-4 ° C per minute to a temperature of 460 ± 5 ° C and the exposure time is 7-15 minutes, after which carry out the pace rations with an increase of 3-7 ° C per minute until a temperature of 560 ± 10 ° C is reached. 2. Способ по п.1, отличающийся тем, что восстановление осуществляют из хлорида серебра измельченного до размера ≤100 мкм.2. The method according to claim 1, characterized in that the recovery is carried out from silver chloride crushed to a size of ≤100 μm. 3. Способ по п.1, отличающийся тем, что располагают измельченный хлорид серебра в реакционной камере слоем толщиной ≤50 мкм.3. The method according to claim 1, characterized in that the ground silver chloride is placed in the reaction chamber with a thickness of ≤50 μm. 4. Способ по п.1, отличающийся тем, что прекращают процесс восстановления при достижении температуры 560±10°С.4. The method according to claim 1, characterized in that the recovery process is stopped when the temperature reaches 560 ± 10 ° C. 5. Способ п.1, отличающийся тем, что прогревают газообразный водород адекватно подъему температуры восстановления ±5°C.5. The method of claim 1, characterized in that the hydrogen gas is heated adequately by raising the reduction temperature of ± 5 ° C.
RU2005128024/02A 2005-09-07 2005-09-07 Method for producing silver from silver chlorides at reducing with use of gaseous hydrogen RU2309998C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2005128024/02A RU2309998C2 (en) 2005-09-07 2005-09-07 Method for producing silver from silver chlorides at reducing with use of gaseous hydrogen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2005128024/02A RU2309998C2 (en) 2005-09-07 2005-09-07 Method for producing silver from silver chlorides at reducing with use of gaseous hydrogen

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RU2005128024A true RU2005128024A (en) 2007-03-20
RU2309998C2 RU2309998C2 (en) 2007-11-10

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RU2005128024/02A RU2309998C2 (en) 2005-09-07 2005-09-07 Method for producing silver from silver chlorides at reducing with use of gaseous hydrogen

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009076684A3 (en) * 2007-12-10 2009-07-30 Rand Refinery Ltd Recovery of metal, espacially silver, from metal chlorides by hydrogen reduction

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4388109A (en) * 1980-05-30 1983-06-14 Sherritt Gordon Mines Limited Process for the production of silver powder from silver chloride, sulphate or sulphide
RU2038394C1 (en) * 1993-09-28 1995-06-27 Крылов Владимир Владимирович Method for extraction of silver from refining intermediate products containing silver chloride
RU2094506C1 (en) * 1996-05-28 1997-10-27 Институт химии и технологии редких элементов и минерального сырья Кольского научного центра РАН Method of metallic silver producing
RU2130504C1 (en) * 1998-02-16 1999-05-20 Санкт-Петербургский филиал Закрытое акционерное общество Научно- производственная фирма "Башкирская золотодобывающая компания" Method of producing silver from its chloride
US6090179A (en) * 1998-07-30 2000-07-18 Remptech Ltd. Process for manufacturing of metallic power

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009076684A3 (en) * 2007-12-10 2009-07-30 Rand Refinery Ltd Recovery of metal, espacially silver, from metal chlorides by hydrogen reduction
US8377166B2 (en) 2007-12-10 2013-02-19 Prior Engineering Services Ag Reduction of metal chloride
CN101983248B (en) * 2007-12-10 2013-07-17 普莱工程服务股份公司 A method for the recovery of metals, especially silver, from metal chlorides by hydrogen reduction

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Effective date: 20080908