CN104692416A - Preparation method of high purity fulminate gold - Google Patents
Preparation method of high purity fulminate gold Download PDFInfo
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- CN104692416A CN104692416A CN201310650386.6A CN201310650386A CN104692416A CN 104692416 A CN104692416 A CN 104692416A CN 201310650386 A CN201310650386 A CN 201310650386A CN 104692416 A CN104692416 A CN 104692416A
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- CN
- China
- Prior art keywords
- gold
- fulminate
- fulminating
- fulminating gold
- preparation
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G7/00—Compounds of gold
Abstract
A preparation method of high purity fulminate gold is characterized by comprising the following steps: (1) preparation of fulminate gold: using 4.6ml-5.5mL of ammonia for per gram of raw material chloroauric acid, and reacting at stirring speed of 130-170r / min at the temperature of 90-110 DEG C for 40-60 min, so as to obtain a preliminary product of brown coarse fulminate gold for later processing; and (2) subsequent washing and refining: conducting pumping filtration on brown coarse fulminate gold from the step (1), washing the fulminate gold with distilled water at 80-95 DEG C, with water flow rate of 50-75ml / min for 60-85min after washing, so as to obtain the refined fulminate gold product. The invention avoids the problems of long flow, low purity of fulminate gold and certain risk in the traditional process, solves the defects of low gold content and storage difficulties, and has greatly reduced cost.
Description
Technical field
The present invention relates to a kind of preparation method of fulminating gold, particularly relate to a kind of preparation method of high purity fulminating gold, belong to precious metals metallurgy field.
Background technology
Fulminic acid method is the main method of producing gold tricyanide (I) potassium at present.Fulminating gold also can be used for being separated of the process of non-metal electroplating front activating, gold-plated, glass and ceramic colorant and the element such as rubidium, caesium.The catalysis that all matches in aviation, microelectronics, chemistry, petrochemical complex, glass fibre, waste-gas cleaning, medicine, the energy and the every field such as biotechnology and metallurgical industry have all played vital role.Due to the special physical property of fulminating gold, deposit shortcomings such as exploding in the dry state, product gold content is low, environmental pollution is serious, storage requirement is harsh, and transport is inconvenient.So real-time high-efficiency prepared by fulminating gold has just become the most important thing.
Summary of the invention
The object of the invention is to solve prior art Problems existing, for the shortcoming that existing fulminating gold preparation method exists, after repeatedly having studied and done lot of experiments, develop a kind of simple, efficient, safety and the preparation method of the high high purity fulminating gold of product purity.
The technical solution that the present invention provides is: the preparation method of this high purity fulminating gold, is characterized in refining two steps of subsequent wash comprising fulminating gold preparation, fulminating gold product.
Prepared by step (1) fulminating gold.
Corresponding every gram of raw material hydrochloro-auric acid, corresponding ammonia volume is 4.6ml-5.5ml, mixing speed 130-170r/min, and temperature of reaction is at 90-110 DEG C, constantly drying is sure not to system moisturizing in reaction times 40-60min(reaction process), there is following reaction in system.
2HAuCl
4+11NH
3·H
2O→Au
2O
3·3NH
3↓+8NH
4Cl+8H
2O。
Draw the thick fulminating gold of preliminary product brown color, in order to subsequent disposal.
Step (2) subsequent wash is refined.
The thick fulminating gold suction filtration of brown color (1) step obtained, wash it with the distilled water of 80 DEG C-95 DEG C, washing water flow velocity is 50-75ml/min, washing time 60-85min, namely obtains refining fulminating gold product after washing.
For realizing object of the present invention better, time prepared by step (1) fulminating gold, recommendation ammonia volume is 4.6ml/g-5.0ml/g(hydrochloro-auric acid), mixing speed 140-160r/min, temperature of reaction 95-105 DEG C, reaction times 45-60min.
For realizing object of the present invention better, when step (2) subsequent wash is refined, recommend the distilled water of employing 80 DEG C-90 DEG C to wash it, washing water flow velocity is 50-65ml/min, washing time 65-75min.
Compared with prior art, the invention has the beneficial effects as follows: high-purity fulminating gold product prepared by present method, avoid that conventional process flow is long, fulminating gold purity is low, preparation process has the problems such as certain risk, solve product gold content low, store the drawbacks such as difficulty, and cost to reduce a lot.
Specific embodiments
Embodiment 1.
Get 5g hydrochloro-auric acid (gold content >=47.8%), add 25ml ammoniacal liquor (28%), in temperature 100 DEG C in reaction system, reaction times 60min, system mixing speed 160r/min.Material is taken out, filters, use flow velocity 60ml/min, 85 DEG C of distilled water wash product fulminating gold 65min.Take weight, and chemically examine.
Result:
Fulminating gold quality: 3.5g
Fulminating gold purity: 99.23%
Fulminating gold gold content: 39.8 %.
Embodiment 2.
Get 5g hydrochloro-auric acid (gold content >=47.8%), add 24ml ammoniacal liquor (28%), in temperature 95 DEG C in reaction system, reaction times 60min, system mixing speed 140r/min.Material is taken out, filters, use flow velocity 50ml/min, 80 DEG C of distilled water wash product fulminating gold 70min.Take weight, and chemically examine.
Result:
Fulminating gold quality: 3.45g
Fulminating gold purity: 99.23%
Fulminating gold gold content: 39.75%.
Embodiment 3.
Get 5g hydrochloro-auric acid (gold content >=47.8%), add 23ml ammoniacal liquor (28%), in temperature 105 DEG C in reaction system, reaction times 45min, system mixing speed 170r/min.Material is taken out, filters, use flow velocity 70ml/min, 90 DEG C of distilled water wash product fulminating gold 75min.Take weight, and chemically examine.
Result:
Fulminating gold quality: 3.25g
Fulminating gold purity: 99.31%
Fulminating gold gold content: 39.4%.
Claims (3)
1. a preparation method for high purity fulminating gold, is characterized in that refining two steps of subsequent wash comprising fulminating gold preparation, fulminating gold product:
Prepared by step (1) fulminating gold:
Corresponding every gram of raw material hydrochloro-auric acid, corresponding ammonia volume is 4.6ml-5.5ml, mixing speed 130-170r/min, temperature of reaction is at 90-110 DEG C, constantly drying is sure not to system moisturizing) in reaction times 40-60min(reaction process, draw the thick fulminating gold of preliminary product brown color, in order to subsequent disposal;
Step (2) subsequent wash is refined:
The thick fulminating gold suction filtration of brown color (1) step obtained, wash it with the distilled water of 80 DEG C-95 DEG C, washing water flow velocity is 50-75ml/min, washing time 60-85min, namely obtains refining fulminating gold product after washing.
2. the method prepared of high purity fulminating gold according to claim 1, when it is characterized in that prepared by step (1) fulminating gold, use ammonia volume is 4.6ml/g-5.0ml/g(hydrochloro-auric acid), mixing speed 140-160r/min, temperature of reaction 95-105 DEG C, reaction times 45-60min.
3. the method prepared of high purity fulminating gold according to claim 1, when it is characterized in that step (2) subsequent wash is refined, adopt the distilled water of 80 DEG C-90 DEG C to wash it, washing water flow velocity is 50-65ml/min, washing time 65-75min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310650386.6A CN104692416A (en) | 2013-12-06 | 2013-12-06 | Preparation method of high purity fulminate gold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310650386.6A CN104692416A (en) | 2013-12-06 | 2013-12-06 | Preparation method of high purity fulminate gold |
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| Publication Number | Publication Date |
|---|---|
| CN104692416A true CN104692416A (en) | 2015-06-10 |
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|---|---|---|---|
| CN201310650386.6A Pending CN104692416A (en) | 2013-12-06 | 2013-12-06 | Preparation method of high purity fulminate gold |
Country Status (1)
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| CN (1) | CN104692416A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11319613B2 (en) | 2020-08-18 | 2022-05-03 | Enviro Metals, LLC | Metal refinement |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405086A (en) * | 2002-10-29 | 2003-03-26 | 张东山 | Method and apparatus for directly synthesizing auro-potassium cyanide by controlling electric potential |
| CN101829567A (en) * | 2010-05-14 | 2010-09-15 | 浙江大学 | Preparation method and application of load type nano-gold catalyst |
-
2013
- 2013-12-06 CN CN201310650386.6A patent/CN104692416A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1405086A (en) * | 2002-10-29 | 2003-03-26 | 张东山 | Method and apparatus for directly synthesizing auro-potassium cyanide by controlling electric potential |
| CN101829567A (en) * | 2010-05-14 | 2010-09-15 | 浙江大学 | Preparation method and application of load type nano-gold catalyst |
Non-Patent Citations (1)
| Title |
|---|
| 陆金龙: "镀金工艺及黄金回收", 《2007年上海市电子电镀学术年会论文集》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Application publication date: 20150610 |
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