CN102874844A - Method for producing silver potassium cyanide - Google Patents
Method for producing silver potassium cyanide Download PDFInfo
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- CN102874844A CN102874844A CN2012104098495A CN201210409849A CN102874844A CN 102874844 A CN102874844 A CN 102874844A CN 2012104098495 A CN2012104098495 A CN 2012104098495A CN 201210409849 A CN201210409849 A CN 201210409849A CN 102874844 A CN102874844 A CN 102874844A
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- silver
- potassium cyanide
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- cyanide
- nitrate
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Abstract
The invention discloses a method for producing silver potassium cyanide. The silver potassium cyanide with high purity can be obtained by steps of dissolving, detecting, neutralizing, precipitating, cleaning, detecting, dissolving again, cooling for crystallization, leaching, washing and the like. Compared with conventional production methods, the method for producing silver potassium cyanide is added in multi-time detection and filtering and improved in purity of final product, and vacuum drying is simultaneously performed, so that water content of the obtained silver potassium cyanide is low, and product quality is improved.
Description
Technical field
The present invention relates to the synthetic field of prussiate, relate in particular to a kind of method of producing silver potassium cyanide.
Background technology
Japanese publication " method that mineral compound prepares the production silver potassium cyanide of introducing in the handbook (the 3rd volume) is the production method that usually adopts at present, that is: with 1:1 nitric acid dissolve argent, the silver nitrate solution that obtains is evaporated to remove excessive nitric acid, obtain the Silver Nitrate crystallization after the cooling, after filtration after the oven dry, by calculating the mol ratio of pressing Silver Nitrate and potassium cyanide 1:1, be made into respectively Silver Nitrate and the potassium cyanide solution of concentration, under agitation Silver Nitrate is added the people and in potassium cyanide solution, be settled out silver cyanide, then silver cyanide is made silver potassium cyanide with potassium cyanide by the 1:1 molar ratio reaction again.It is lack of standardization that traditional production method exists operational path, complex operation, and the silver potassium cyanide purity that obtains is on the low side etc. not enough.
Summary of the invention
In order to overcome defects, the invention provides a kind of method low and the production silver potassium cyanide that product purity is high that consumes.
To achieve these goals, technical scheme of the present invention is: a kind of method of producing silver potassium cyanide, and it may further comprise the steps:
1) silver is put into dilute nitric acid solution, fully obtain silver nitrate solution after the dissolving, the mass ratio of silver and dilute nitric acid solution is 1:1.7;
2) the heating exhausting makes that silver ion content is 85-90g/L in the silver nitrate solution;
3) survey the pH value of silver nitrate solution, adding simultaneously ammoniacal liquor, to make the pH value of silver nitrate solution be 5～6, obtains the Silver Nitrate neutralizer;
4) the Silver Nitrate neutralizer is sprayed in the potassium cyanide solution, the mass ratio of silver ions and potassium cyanide is 1:0.625 in the Silver Nitrate, after reaction finishes, emits reaction solution and filtration, obtains silver cyanide precipitation body;
5) the washing silver cyanide precipitation body that discharges water is removed nitrate radical, and detects to not containing nitrate radical, obtains the solid silver cyanide;
6) the solid silver cyanide is added potassium cyanide solution, the mass ratio of silver ions and potassium cyanide is 1:0.625, and heating is also stirred, and the solid silver cyanide is dissolved fully and reacts completely, and obtains silver potassium cyanide solution;
7) silver potassium cyanide solution is put into container, carry out the normal temperature and pressure water-cooled, obtain the silver potassium cyanide xln;
8) the silver potassium cyanide xln is carried out suction filtration, washing in the zero degree frozen water, obtain pure silver potassium cyanide xln;
9) pure silver potassium cyanide xln is carried out drying under vacuum environment, obtain after the assay was approved the finished product silver potassium cyanide.
Further, the dilute nitric acid solution described in the step 1) is the mixed solution of nitric acid and water 1:1
The invention has the beneficial effects as follows: with traditional manufacture method compared, increased repeated detection and filtration, improved the purity of final product, carried out simultaneously vacuum-drying, the silver potassium cyanide water content that obtains is low, has improved quality.
Embodiment
The present invention is described further below in conjunction with specific embodiment.
A kind of method of producing silver potassium cyanide, it may further comprise the steps:
1) 1KG silver is put into the 1.7KG1:1 dilute nitric acid solution, fully obtain silver nitrate solution after the dissolving;
2) the heating exhausting makes that silver ion content is 90g/L in the silver nitrate solution;
3) survey the pH value of silver nitrate solution, adding simultaneously ammoniacal liquor, to make the pH value of silver nitrate solution be 5～6, obtains the Silver Nitrate neutralizer;
4) the Silver Nitrate neutralizer is sprayed in the solution that contains 0.625KG potassium cyanide, after reaction finishes, emit reaction solution and filtration, obtain silver cyanide precipitation body;
5) the washing silver cyanide precipitation body that discharges water is removed nitrate radical, and detects to not containing nitrate radical, obtains the solid silver cyanide;
6) the solid silver cyanide is added contain in the solution of 0.625KG potassium cyanide, heating is also stirred, and the solid silver cyanide is dissolved fully and reacts completely, and obtains silver potassium cyanide solution;
7) silver potassium cyanide solution is put into container, carry out the normal temperature and pressure water-cooled, obtain the silver potassium cyanide xln;
8) the silver potassium cyanide xln is carried out suction filtration, washing in the zero degree frozen water, obtain pure silver potassium cyanide xln;
9) pure silver potassium cyanide xln is carried out drying under vacuum environment, obtain after the assay was approved the finished product silver potassium cyanide.
Claims (2)
1. method of producing silver potassium cyanide, it is characterized in that: it may further comprise the steps:
1) silver is put into dilute nitric acid solution, fully obtain silver nitrate solution after the dissolving, the mass ratio of silver and dilute nitric acid solution is 1:1.7;
2) the heating exhausting makes that silver ion content is 85-90g/L in the silver nitrate solution;
3) survey the pH value of silver nitrate solution, adding simultaneously ammoniacal liquor, to make the pH value of silver nitrate solution be 5～6, obtains the Silver Nitrate neutralizer;
4) the Silver Nitrate neutralizer is sprayed in the potassium cyanide solution, the mass ratio of silver ions and potassium cyanide is 1:0.625 in the Silver Nitrate, after reaction finishes, emits reaction solution and filtration, obtains silver cyanide precipitation body;
5) the washing silver cyanide precipitation body that discharges water is removed nitrate radical, and detects to not containing nitrate radical, obtains the solid silver cyanide;
6) the solid silver cyanide is added potassium cyanide solution, the mass ratio of silver ions and potassium cyanide is 1:0.625, and heating is also stirred, and the solid silver cyanide is dissolved fully and reacts completely, and obtains silver potassium cyanide solution;
7) silver potassium cyanide solution is put into container, carry out the normal temperature and pressure water-cooled, obtain the silver potassium cyanide xln;
8) the silver potassium cyanide xln is carried out suction filtration, washing in the zero degree frozen water, obtain pure silver potassium cyanide xln;
9) pure silver potassium cyanide xln is carried out drying under vacuum environment, obtain after the assay was approved the finished product silver potassium cyanide.
2. the method for production silver potassium cyanide according to claim 1, it is characterized in that: the dilute nitric acid solution described in the step 1) is the mixed solution of nitric acid and water 1:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104098495A CN102874844A (en) | 2012-10-25 | 2012-10-25 | Method for producing silver potassium cyanide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104098495A CN102874844A (en) | 2012-10-25 | 2012-10-25 | Method for producing silver potassium cyanide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102874844A true CN102874844A (en) | 2013-01-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104098495A Pending CN102874844A (en) | 2012-10-25 | 2012-10-25 | Method for producing silver potassium cyanide |
Country Status (1)
| Country | Link |
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| CN (1) | CN102874844A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104250012A (en) * | 2014-09-27 | 2014-12-31 | 深圳市鑫鸿发环保设备有限公司 | Silver cyanide manufacturing technology and equipment thereof |
| CN107381600A (en) * | 2017-07-21 | 2017-11-24 | 上海交通大学 | Carbon-carbon bond fracture synthesis cyanide and the method that one-dimensional coiled material is prepared from two-dimensional material |
| CN113247919A (en) * | 2021-05-21 | 2021-08-13 | 漯河瀚普环创环保科技有限公司 | Preparation method of silver potassium cyanide |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1161935A (en) * | 1996-04-11 | 1997-10-15 | 郑州大学 | Method for production of silver potassium cyanide |
| JP3800352B2 (en) * | 1995-12-27 | 2006-07-26 | 同和鉱業株式会社 | Potassium dicyanosilverate used for silver plating and method for producing the same |
-
2012
- 2012-10-25 CN CN2012104098495A patent/CN102874844A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3800352B2 (en) * | 1995-12-27 | 2006-07-26 | 同和鉱業株式会社 | Potassium dicyanosilverate used for silver plating and method for producing the same |
| CN1161935A (en) * | 1996-04-11 | 1997-10-15 | 郑州大学 | Method for production of silver potassium cyanide |
Non-Patent Citations (1)
| Title |
|---|
| 刘庆杰: "氰化银法生产氰化银钾的生产实践", 《中国有色冶金》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104250012A (en) * | 2014-09-27 | 2014-12-31 | 深圳市鑫鸿发环保设备有限公司 | Silver cyanide manufacturing technology and equipment thereof |
| CN107381600A (en) * | 2017-07-21 | 2017-11-24 | 上海交通大学 | Carbon-carbon bond fracture synthesis cyanide and the method that one-dimensional coiled material is prepared from two-dimensional material |
| CN107381600B (en) * | 2017-07-21 | 2019-07-12 | 上海交通大学 | Method carbon-to-carbon rupture synthesis cyanide and prepare one-dimensional coiled material from two-dimensional material |
| CN113247919A (en) * | 2021-05-21 | 2021-08-13 | 漯河瀚普环创环保科技有限公司 | Preparation method of silver potassium cyanide |
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Application publication date: 20130116 |