CN102162035A - Vacuum distillation process for extracting silver from silver zinc slag - Google Patents
Vacuum distillation process for extracting silver from silver zinc slag Download PDFInfo
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- CN102162035A CN102162035A CN2011100865633A CN201110086563A CN102162035A CN 102162035 A CN102162035 A CN 102162035A CN 2011100865633 A CN2011100865633 A CN 2011100865633A CN 201110086563 A CN201110086563 A CN 201110086563A CN 102162035 A CN102162035 A CN 102162035A
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- silver
- bismuth
- cadmia
- zinc
- vacuum
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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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Abstract
The invention relates to a vacuum distillation process for extracting silver from silver zinc slag, characterized by comprising the process flow of reduction smelting, vacuum distillation, extraction of gold and silver and bismuth refining for desilverization. The invention has the advantages of simple process, little equipment investment, no loss of silver, zinc, bismuth and led, high recovery rate of rare valuable metals, low cost, no pollution of the extracting process, and provides a new smelting process for the silver zinc slag.
Description
Technical field
The present invention relates to a kind of Metal smelting method, silver process is extracted in particularly a kind of silver-colored cadmia vacuum distilling.
Background technology
Meeting output silver cadmia in the desilver operation of thick bismuth and fire refining of crude lead technology, argentiferous 1%～8%, bismuth or lead 70%～85%, zinc 10%～15% do not wait in the silver-colored cadmia.At present, be earlier silver-colored cadmia to be returned lead bullion to the common process of the recovery of precious metal in the silver-colored cadmia, carry out retailoring again.In the production process, part zinc enters in the flue dust of lead smelt, and bismuth, silver enter in the lead bullion electrorefining anode sludge, causes the rate of recovery loss of silver, bismuth, zinc, and extraction process is long, energy consumption is big, contaminate environment.
Summary of the invention
The objective of the invention is in order to overcome the weak point of above-mentioned technology, and provide that a kind of production technique is simple, precious metal rate of recovery height, cost are low, pollute little silver-colored cadmia vacuum distilling extracts silver process.
For achieving the above object, the concrete production method of the present invention's employing is as follows:
1, retailoring: silver-colored cadmia is placed in the vacuum distillation furnace, add the reductive agent coal of silver-colored cadmia weight 5%～10%, under 1000 ℃～1200 ℃ temperature, carry out retailoring and get silver-colored zinc bismuth alloy.
2, vacuum distilling: above-mentioned gained silver zinc bismuth alloy in vacuum distillation furnace, is carried out vacuum distilling, silver alloys and the zinc bismuth alloy of output silver content more than 98% under 20～100Pa vacuum state.
3, carry gold and silver: the silver alloys of above-mentioned output is carried out refining get fine silver.
4, bismuth refining desilver: the zinc bismuth alloy of vacuum distilling output is directly used in bismuth refining zincification desilver operation, and the bismuth silver cadmia of output returns and carries out retailoring and vacuum distilling.
The present invention is owing to adopt above processing method, and technology is simple, and the equipment less investment does not have the loss of silver, zinc, bismuth, lead, rare your recovery rate of valuable metals height, and cost is low, and leaching process is pollution-free, is silver-colored cadmia melting novel process.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
To choose silver-colored cadmia 1000 ㎏ is that raw material extraction fine silver is an example:
1,1000 ㎏ silver cadmia is placed in the vacuum distillation furnace, add 50 ㎏ reductive agent coals, under 1000 ℃～1200 ℃ temperature, carry out retailoring and get silver-colored zinc bismuth alloy.
2, with above-mentioned gained silver zinc bismuth alloy in vacuum distillation furnace, under 20～100Pa vacuum state, carry out vacuum distilling, silver alloys 50 ㎏s and zinc bismuth alloy 950 ㎏s of output silver content more than 98%.
3, the silver alloys of above-mentioned output is carried out refining and get fine silver 49 ㎏.
4, the zinc bismuth alloy with the vacuum distilling output is directly used in bismuth refining zincification desilver operation, and the bismuth silver cadmia of output returns and carries out retailoring and vacuum distilling.
Claims (1)
1. silver process is extracted in a silver-colored cadmia vacuum distilling, it is characterized in that through following technical process:
(1), retailoring: silver-colored cadmia is placed in the vacuum distillation furnace, add the reductive agent coal of silver-colored cadmia weight 5%～10%, under 1000 ℃～1200 ℃ temperature, carry out retailoring and get silver-colored zinc bismuth alloy;
(2), vacuum distilling: above-mentioned gained silver zinc bismuth alloy in vacuum distillation furnace, is carried out vacuum distilling, the silver alloys and the zinc bismuth alloy of output silver content more than 98% under 20～100Pa vacuum state;
(3), carry gold and silver: the silver alloys of above-mentioned output is carried out refining get fine silver;
(4), bismuth refining desilver: the zinc bismuth alloy of vacuum distilling output is directly used in bismuth refining zincification desilver operation, and the bismuth silver cadmia of output returns and carries out retailoring and vacuum distilling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100865633A CN102162035A (en) | 2011-04-07 | 2011-04-07 | Vacuum distillation process for extracting silver from silver zinc slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100865633A CN102162035A (en) | 2011-04-07 | 2011-04-07 | Vacuum distillation process for extracting silver from silver zinc slag |
Publications (1)
| Publication Number | Publication Date |
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| CN102162035A true CN102162035A (en) | 2011-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100865633A Pending CN102162035A (en) | 2011-04-07 | 2011-04-07 | Vacuum distillation process for extracting silver from silver zinc slag |
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| CN (1) | CN102162035A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828042A (en) * | 2012-09-06 | 2012-12-19 | 昆明理工大学 | Method for extracting silver from silver-containing crude tin alloy |
| CN104532013A (en) * | 2014-12-18 | 2015-04-22 | 西安建筑科技大学 | Method for recycling silver from jarosite residue |
| CN105112688A (en) * | 2015-09-10 | 2015-12-02 | 昆明理工大学 | Fire-refining method of crude bismuth |
| CN105803213A (en) * | 2016-04-28 | 2016-07-27 | 河南金利金铅集团有限公司 | Method for refining bismuth from bismuth oxide slags |
| CN108018431A (en) * | 2017-12-15 | 2018-05-11 | 郴州市金贵银业股份有限公司 | The recovery method of valuable metal in a kind of silver-zine slag |
| JP2019143231A (en) * | 2018-02-23 | 2019-08-29 | 学校法人法政大学 | Noble metal concentration method and noble metal concentration device |
| CN112210672A (en) * | 2020-10-20 | 2021-01-12 | 昆明理工大学 | Method for purifying crude silver |
| CN112522518A (en) * | 2020-12-01 | 2021-03-19 | 昆明理工大学 | Safe control and comprehensive recycling method for high-lead mercury-containing acid mud |
| CN113106262A (en) * | 2021-03-01 | 2021-07-13 | 温州伟达贵金属粉体材料有限公司 | Efficient recovery process for silver-based contact material |
| US11319613B2 (en) | 2020-08-18 | 2022-05-03 | Enviro Metals, LLC | Metal refinement |
-
2011
- 2011-04-07 CN CN2011100865633A patent/CN102162035A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 何贻柏: "《会议文集》", 31 December 1982 * |
| 黄治家等: "真空蒸馏铋银锌壳提取粗银粗铋和粗锌", 《有色金属》 * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828042A (en) * | 2012-09-06 | 2012-12-19 | 昆明理工大学 | Method for extracting silver from silver-containing crude tin alloy |
| CN104532013A (en) * | 2014-12-18 | 2015-04-22 | 西安建筑科技大学 | Method for recycling silver from jarosite residue |
| CN104532013B (en) * | 2014-12-18 | 2017-02-15 | 西安建筑科技大学 | Method for recycling silver from jarosite residue |
| CN105112688A (en) * | 2015-09-10 | 2015-12-02 | 昆明理工大学 | Fire-refining method of crude bismuth |
| CN105803213A (en) * | 2016-04-28 | 2016-07-27 | 河南金利金铅集团有限公司 | Method for refining bismuth from bismuth oxide slags |
| CN108018431A (en) * | 2017-12-15 | 2018-05-11 | 郴州市金贵银业股份有限公司 | The recovery method of valuable metal in a kind of silver-zine slag |
| JP2019143231A (en) * | 2018-02-23 | 2019-08-29 | 学校法人法政大学 | Noble metal concentration method and noble metal concentration device |
| JP7046352B2 (en) | 2018-02-23 | 2022-04-04 | 学校法人法政大学 | Precious metal concentrating method and precious metal concentrator |
| US11319613B2 (en) | 2020-08-18 | 2022-05-03 | Enviro Metals, LLC | Metal refinement |
| US11578386B2 (en) | 2020-08-18 | 2023-02-14 | Enviro Metals, LLC | Metal refinement |
| CN112210672A (en) * | 2020-10-20 | 2021-01-12 | 昆明理工大学 | Method for purifying crude silver |
| CN112210672B (en) * | 2020-10-20 | 2021-12-07 | 昆明理工大学 | Method for purifying crude silver |
| CN112522518A (en) * | 2020-12-01 | 2021-03-19 | 昆明理工大学 | Safe control and comprehensive recycling method for high-lead mercury-containing acid mud |
| CN113106262A (en) * | 2021-03-01 | 2021-07-13 | 温州伟达贵金属粉体材料有限公司 | Efficient recovery process for silver-based contact material |
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Application publication date: 20110824 |