CN113406269A - Method for judging concentration and crystallization end point of potassium aurous cyanide - Google Patents
Method for judging concentration and crystallization end point of potassium aurous cyanide Download PDFInfo
- Publication number
- CN113406269A CN113406269A CN202110440513.4A CN202110440513A CN113406269A CN 113406269 A CN113406269 A CN 113406269A CN 202110440513 A CN202110440513 A CN 202110440513A CN 113406269 A CN113406269 A CN 113406269A
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- Prior art keywords
- crystallization
- potassium
- end point
- solution
- cyanide
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- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 title claims abstract description 48
- IZLAVFWQHMDDGK-UHFFFAOYSA-N gold(1+);cyanide Chemical compound [Au+].N#[C-] IZLAVFWQHMDDGK-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 229910052700 potassium Inorganic materials 0.000 title claims abstract description 48
- 239000011591 potassium Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000002425 crystallisation Methods 0.000 title claims abstract description 27
- 230000008025 crystallization Effects 0.000 title claims abstract description 27
- 239000011549 crystallization solution Substances 0.000 claims abstract description 37
- 239000000126 substance Substances 0.000 claims abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 26
- 229910052782 aluminium Inorganic materials 0.000 claims description 26
- 239000000243 solution Substances 0.000 claims description 16
- NRTDAKURTMLAFN-UHFFFAOYSA-N potassium;gold(3+);tetracyanide Chemical compound [K+].[Au+3].N#[C-].N#[C-].N#[C-].N#[C-] NRTDAKURTMLAFN-UHFFFAOYSA-N 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- 238000005406 washing Methods 0.000 claims description 11
- 239000010931 gold Substances 0.000 claims description 10
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 239000013078 crystal Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 239000004566 building material Substances 0.000 abstract 1
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000009713 electroplating Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 229910003771 Gold(I) chloride Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to the technical field of fireproof building materials, in particular to a method for judging a concentration crystallization end point of potassium aurous cyanide, which comprises the following steps: step seven: and then observing substances on the inner side of the filter funnel through a magnifying lens, wherein if the inner side of the filter funnel has elemental Au, the situation that the potassium aurous cyanide crystallization solution is not completely concentrated and crystallized is shown, and if the inner side of the filter funnel does not have elemental Au, the situation that the potassium aurous cyanide crystallization solution is completely concentrated and crystallized is shown, and the crystallization end point is reached.
Description
Technical Field
The invention relates to the technical field of chemical reactions, in particular to a method for judging a concentration crystallization end point of potassium aurous cyanide.
Background
Potassium aurous cyanide is an important electroplating chemical raw material, is a main gold-plating raw material of integrated circuit boards or artware, is mainly used for electroplating of electronic products, and is prepared by the action of potassium cyanide and aurous chloride in analytical reagent, pharmaceutical industry and the like.
The method is characterized in that a gold potassium cyanide crystal can be obtained only by concentrating and crystallizing after a gold potassium cyanide solution is prepared, whether the gold potassium cyanide solution is completely crystallized or not needs to be judged in the concentrating and crystallizing process of a general gold potassium cyanide solution, namely, the crystallization end point of the gold potassium cyanide solution is judged.
Disclosure of Invention
The invention aims to provide a method for judging the concentration and crystallization end point of potassium aurous cyanide, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for judging the concentration and crystallization end point of potassium aurous cyanide,
the method comprises the following steps: firstly, putting a potassium aurous cyanide crystallization solution into a beaker through a liquid taking tube;
step two: then cutting a proper amount of aluminum sheet by a knife, weighing by a balance, and putting the aluminum sheet into a sample box by tweezers;
step three: placing the beaker filled with the potassium aurous cyanide crystallization solution on an alcohol lamp bracket, and heating the beaker by an alcohol lamp;
step four: then the worker puts the aluminum sheet in the sample box into a beaker containing the potassium aurous cyanide crystallization solution through tweezers and reacts for a period of time.
Step five: filtering the solution obtained after the reaction in the step four through a filter funnel;
step six: washing the filter funnel in the fifth step by using an aqueous solution;
step seven: and then observing substances on the inner side of the filter funnel through a magnifying glass, wherein if the inner side of the filter funnel has elemental Au, the gold potassium cyanide crystallization solution is not completely concentrated and crystallized, and if the inner side of the filter funnel does not have elemental Au, the gold potassium cyanide crystallization solution is completely concentrated and crystallized to reach the crystallization end point.
Preferably, the capacity of the potassium aurous cyanide crystallization solution in the first step is 50 ml.
Preferably, the mass of the aluminum sheet in the second step is 5 g.
Preferably, the reaction time of the potassium aurous cyanide crystal solution and the aluminum sheet in the step IV is 10 min.
Preferably, the washing mode of the step six is slow washing from the upper part of the funnel to the lower part of the funnel.
Preferably, the aqueous solution in the sixth step is pure water.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, whether the potassium aurous cyanide crystallization solution is completely crystallized or not can be accurately judged through the reaction of the aluminum sheet and the potassium aurous cyanide crystallization solution, namely the crystallization end point is reached, a worker does not need to estimate the crystallization time through concentration, and the worker waits when the potassium aurous cyanide crystallization solution reaches the crystallization end point in advance, so that the precision of the concentrated crystallization of the potassium aurous cyanide crystallization solution is improved, and the efficiency of the concentrated crystallization of the potassium aurous cyanide crystallization solution is improved.
Detailed Description
Example 1
A method for judging the concentration and crystallization end point of potassium aurous cyanide comprises the following steps:
the method comprises the following steps: firstly, putting a potassium aurous cyanide crystallization solution into a beaker through a liquid taking tube;
step two: then cutting a proper amount of aluminum sheet by a knife, weighing by a balance, and putting the aluminum sheet into a sample box by tweezers;
step three: placing the beaker filled with the potassium aurous cyanide crystallization solution on an alcohol lamp bracket, and heating the beaker by an alcohol lamp;
step four: then the worker puts the aluminum sheet in the sample box into a beaker containing the potassium aurous cyanide crystallization solution through tweezers and reacts for a period of time.
Step five: filtering the solution obtained after the reaction in the step four through a filter funnel;
step six: washing the filter funnel in the fifth step by using an aqueous solution;
step seven: and then observing substances on the inner side of the filter funnel through a magnifying glass, wherein if the inner side of the filter funnel has elemental Au, the gold potassium cyanide crystallization solution is not completely concentrated and crystallized, and if the inner side of the filter funnel does not have elemental Au, the gold potassium cyanide crystallization solution is completely concentrated and crystallized to reach the crystallization end point.
The capacity of the potassium aurous cyanide crystallization solution in the step one is 50 ml.
And step two, the mass of the aluminum sheet is 5 g.
Fourthly, the reaction time of the potassium aurous cyanide crystal solution and the aluminum sheet is 10 min.
And the washing mode of the sixth step is to slowly wash from the upper part of the funnel to the lower part.
And sixthly, the aqueous solution is pure water.
Example 2
A method for judging the concentration and crystallization end point of potassium aurous cyanide comprises the following steps:
the method comprises the following steps: firstly, putting a potassium aurous cyanide crystallization solution into a beaker through a liquid taking tube;
step two: then cutting a proper amount of aluminum sheet by a knife, weighing by a balance, and putting the aluminum sheet into a sample box by tweezers;
step three: placing the beaker filled with the potassium aurous cyanide crystallization solution on an alcohol lamp bracket, and heating the beaker by an alcohol lamp;
step four: then the worker puts the aluminum sheet in the sample box into a beaker containing the potassium aurous cyanide crystallization solution through tweezers and reacts for a period of time.
Step five: filtering the solution obtained after the reaction in the step four through a filter funnel;
step six: washing the filter funnel in the fifth step by using an aqueous solution;
step seven: and then observing substances on the inner side of the filter funnel through a magnifying glass, wherein if the inner side of the filter funnel has elemental Au, the gold potassium cyanide crystallization solution is not completely concentrated and crystallized, and if the inner side of the filter funnel does not have elemental Au, the gold potassium cyanide crystallization solution is completely concentrated and crystallized to reach the crystallization end point.
The capacity of the potassium aurous cyanide crystallization solution in the step one is 750 ml.
And step two, the mass of the aluminum sheet is 8 g.
And step four, the reaction time of the potassium aurous cyanide crystal solution and the aluminum sheet is 15 min.
And the washing mode of the sixth step is to slowly wash from the upper part of the funnel to the lower part.
Step six, the water solution is alcohol.
Example 3
A method for judging the concentration and crystallization end point of potassium aurous cyanide comprises the following steps:
the method comprises the following steps: firstly, putting a potassium aurous cyanide crystallization solution into a beaker through a liquid taking tube;
step two: then cutting a proper amount of aluminum sheet by a knife, weighing by a balance, and putting the aluminum sheet into a sample box by tweezers;
step three: placing the beaker filled with the potassium aurous cyanide crystallization solution on an alcohol lamp bracket, and heating the beaker by an alcohol lamp;
step four: then the worker puts the aluminum sheet in the sample box into a beaker containing the potassium aurous cyanide crystallization solution through tweezers and reacts for a period of time.
Step five: filtering the solution obtained after the reaction in the step four through a filter funnel;
step six: washing the filter funnel in the fifth step by using an aqueous solution;
step seven: and then observing substances on the inner side of the filter funnel through a magnifying glass, wherein if the inner side of the filter funnel has elemental Au, the gold potassium cyanide crystallization solution is not completely concentrated and crystallized, and if the inner side of the filter funnel does not have elemental Au, the gold potassium cyanide crystallization solution is completely concentrated and crystallized to reach the crystallization end point.
Step one, the capacity of the potassium aurous cyanide crystallization solution is 100 ml.
And step two, the mass of the aluminum sheet is 10 g.
Fourthly, the reaction time of the potassium aurous cyanide crystal solution and the aluminum sheet is 20 min.
And the washing mode of the sixth step is to slowly wash from the upper part of the funnel to the lower part.
And sixthly, the water solution is tap water.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present invention, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (6)
1. A method for judging the concentration and crystallization end point of potassium aurous cyanide is characterized in that: the method comprises the following steps:
the method comprises the following steps: firstly, putting a potassium aurous cyanide crystallization solution into a beaker through a liquid taking tube;
step two: then cutting a proper amount of aluminum sheet by a knife, weighing by a balance, and putting the aluminum sheet into a sample box by tweezers;
step three: placing the beaker filled with the potassium aurous cyanide crystallization solution on an alcohol lamp bracket, and heating the beaker by an alcohol lamp;
step four: then the worker puts the aluminum sheet in the sample box into a beaker containing the potassium aurous cyanide crystallization solution through tweezers and reacts for a period of time.
Step five: filtering the solution obtained after the reaction in the step four through a filter funnel;
step six: washing the filter funnel in the fifth step by using an aqueous solution;
step seven: and then observing substances on the inner side of the filter funnel through a magnifying glass, wherein if the inner side of the filter funnel has elemental Au, the gold potassium cyanide crystallization solution is not completely concentrated and crystallized, and if the inner side of the filter funnel does not have elemental Au, the gold potassium cyanide crystallization solution is completely concentrated and crystallized to reach the crystallization end point.
2. The method for judging the end point of the concentration and crystallization of potassium aurous cyanide according to claim 1, wherein the method comprises the following steps: the capacity of the potassium aurous cyanide crystallization solution in the step one is 50 ml.
3. The method for judging the end point of the concentration and crystallization of potassium aurous cyanide according to claim 1, wherein the method comprises the following steps: and step two, the mass of the aluminum sheet is 5 g.
4. The method for judging the end point of the concentration and crystallization of potassium aurous cyanide according to claim 1, wherein the method comprises the following steps: fourthly, the reaction time of the potassium aurous cyanide crystal solution and the aluminum sheet is 10 min.
5. The method for judging the end point of the concentration and crystallization of potassium aurous cyanide according to claim 1, wherein the method comprises the following steps: and the washing mode of the sixth step is to slowly wash from the upper part of the funnel to the lower part.
6. The method for judging the end point of the concentration and crystallization of potassium aurous cyanide according to claim 1, wherein the method comprises the following steps: and sixthly, the aqueous solution is pure water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110440513.4A CN113406269A (en) | 2021-04-26 | 2021-04-26 | Method for judging concentration and crystallization end point of potassium aurous cyanide |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110440513.4A CN113406269A (en) | 2021-04-26 | 2021-04-26 | Method for judging concentration and crystallization end point of potassium aurous cyanide |
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| CN113406269A true CN113406269A (en) | 2021-09-17 |
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| CN202110440513.4A Pending CN113406269A (en) | 2021-04-26 | 2021-04-26 | Method for judging concentration and crystallization end point of potassium aurous cyanide |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949912A (en) * | 2010-09-06 | 2011-01-19 | 河南中原黄金冶炼厂有限责任公司 | Method for detecting content of cyanogens and gold in gold potassium cyanide |
| JP5152943B1 (en) * | 2012-09-19 | 2013-02-27 | 小島化学薬品株式会社 | Method for producing low free cyanogen gold salt |
| CN109518210A (en) * | 2018-11-29 | 2019-03-26 | 泰州市欣港电子材料有限公司 | A kind of gold potassium cyanide production technology |
| CN109928420A (en) * | 2019-04-11 | 2019-06-25 | 四川沃耐稀新材料科技有限公司 | The production technology of electronic grade nitric acid cerium ammonium |
| CN112481501A (en) * | 2020-11-12 | 2021-03-12 | 阳谷祥光铜业有限公司 | Method for preparing nickel powder by using decoppering final solution |
-
2021
- 2021-04-26 CN CN202110440513.4A patent/CN113406269A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949912A (en) * | 2010-09-06 | 2011-01-19 | 河南中原黄金冶炼厂有限责任公司 | Method for detecting content of cyanogens and gold in gold potassium cyanide |
| JP5152943B1 (en) * | 2012-09-19 | 2013-02-27 | 小島化学薬品株式会社 | Method for producing low free cyanogen gold salt |
| CN109518210A (en) * | 2018-11-29 | 2019-03-26 | 泰州市欣港电子材料有限公司 | A kind of gold potassium cyanide production technology |
| CN109928420A (en) * | 2019-04-11 | 2019-06-25 | 四川沃耐稀新材料科技有限公司 | The production technology of electronic grade nitric acid cerium ammonium |
| CN112481501A (en) * | 2020-11-12 | 2021-03-12 | 阳谷祥光铜业有限公司 | Method for preparing nickel powder by using decoppering final solution |
Non-Patent Citations (1)
| Title |
|---|
| 周全法,王琪,徐正: "鼓氧氰化法生产高纯度氰化亚金钾的研究" * |
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Application publication date: 20210917 |
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