CN1220318A - Formula for purifying gold and gold purifying method using fast wet method - Google Patents
Formula for purifying gold and gold purifying method using fast wet method Download PDFInfo
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- CN1220318A CN1220318A CN97121757A CN97121757A CN1220318A CN 1220318 A CN1220318 A CN 1220318A CN 97121757 A CN97121757 A CN 97121757A CN 97121757 A CN97121757 A CN 97121757A CN 1220318 A CN1220318 A CN 1220318A
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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
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Abstract
The present invention relates to a formula for purifying gold and its fast wet gold-purifying process. Said invention adopts potassium permanganate, sodium oxide, hydrochloric acid and nitric acid as gold-dissolving agent,a nd adopts hyrdazine hydrate and sodium hydroxide as reduction agent to make wet gold purification for gold powder with a certain grade. Said invention possesses the advantages of short purifying time, low gold purification loss rate, high gold yield, high gold purity reaching to greater than or equal to 99.9% of national standard, low production cost and good operation environment, etc..
Description
The present invention relates to the method that a kind of wet method gold is purified, especially a kind ofly be used to put forward pure gold prescription and method using fast wet gold method of purification thereof.
The wet method gold purifying technique of using now is to dissolve bronze with chloroazotic acid, adopts ferrous sulfate, sulfurous gas, and Sodium Nitrite, oxalic acid, one of them reduces gold as reductive agent, reaches the purpose of purification.But exist aqua regia dissolution bronze (or gold grain) time long, must catch up with nitre, the NO2 of generation causes poor working environment, and causes certain gold loss; Recovery time is long, and reduction effect is not very good yet; The gold cost for purification is also higher; The gold purification rate of recovery is on the low side, generally between 99.2-99.5%; Golden purity after the purification does not reach 99.9% sometimes; The gold purification time is long, generally needs 48-72 hour.
The object of the present invention is to provide a kind of pure gold prescription that is used to carry, by the pharmaceutical dissolution that constitutes prescription and the reduction medicament acting in conjunction realize putting forward pure gold purpose.
A further object of the present invention provides and a kind ofly is used to put forward pure gold method using fast wet gold method of purification, and realizes producing to the end from the gold containing material powder purpose of fine bullion from the technological process of several steps.
In conjunction with above-mentioned purpose, major programme of the present invention and implementation method are: a kind ofly be used to carry pure gold prescription, it wraps the medicament of molten gold and the medicament of reduction gold, wherein, the drug prescription composition of described dissolve gold is: sodium oxide (NaCL), potassium permanganate (KMnO4), hydrochloric acid (HHCL), nitric acid (HNO3); The drug prescription composition of described reduction gold is hydrazine hydrate (N2H4H2O), sodium hydroxide (NaOH); A kind ofly be used to put forward pure gold method using fast wet gold method of purification, the step of its method is:
A. the gold containing material powder of poly-certain grade is in container;
B. earlier the gold containing material powder is added in the fusion device, add KMnO4, NaCL, HCL, HNO3 more in proportion;
C. filter and separate out golden liquid, silver suboxide;
D. golden liquid is inserted in the reduction jar, add hydrazine hydrate and sodium hydroxide then in proportion, get proof gold powder and waste liquid;
E. silver chloride being carried out zinc powder is to change after melting gets silver ingot;
F. with proof gold powder filtration washing after melting gets fine bullion.
Because the method that has adopted above-mentioned scheme and realization such scheme is than traditional wet method gold purifying technique, contribution of the present invention is: owing to adopt potassium permanganate, sodium-chlor, hydrochloric acid, the nitric acid medicament as dissolve gold, adopt hydrazine hydrate and sodium hydroxide medicament, carry out gold and purify as the reduction gold.Can make the gold containing material of golden purity at 50-99.5%, be purified to golden purity fast to reach 〉=99.9%.The state bank purchase price of gold, Gold Content less than 99.9% by 88 yuan of purchases of every gram; Gold Content reaches (comprising 99.9%) more than 99.9% by 88.7 yuan of purchases of every gram.0.7 yuan/gram of golden every gram over-bought of purity 〉=99.9.
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is in conjunction with being used to carry pure gold prescription and being used to carry the schema of pure gold method using fast wet gold method of purification.
The prescription that the present invention relates to is by the dissolve gold medicament and the golden medicament of reduction constitutes and the prescription composition of dissolve gold medicament is sodium-chlor (NaCL), potassium permanganate (KMnO4), hydrochloric acid (HCL), nitric acid (HNO3);
The prescription composition of golden medicament of reducing is: hydrazine hydrate (N2H4H2O), sodium hydroxide (NaOH).As being that X gram calculates then that the best proportioning of prescription of above-mentioned each medicament is by the proof gold amount:
The dissolve gold medicament:
1. sodium-chlor: (NaCL :) 100-110X%
2. potassium permanganate: (KMnO4 :) 6-7X%
3. hydrochloric acid: (HCL :) 200-220X%
4. nitric acid: (HNO3 :) 50-60X%
Reduce golden medicament:
5. hydrazine hydrate: (N2H4H2O) 90-95X%
6. sodium hydroxide (NaOH) 16-18X% (or potassium hydroxide)
So far, can realize producing the purpose of ingot by following several steps according to above-mentioned schema:
A. the gold containing material powder of poly-certain grade is in container;
B. earlier the gold containing material powder is added in the fusion device, add KMnO4, NaCL, HCL, HNO3 more in proportion;
C. filter and separate out golden liquid, silver suboxide;
D. golden liquid is inserted in the reduction jar, add hydrazine hydrate and sodium hydroxide then in proportion, get proof gold powder and waste liquid;
E. silver chloride is carried out zinc dust precipitation after melting gets silver ingot;
F. with proof gold powder filtration washing after melting gets fine bullion.
If with prescription of the present invention and use the method for prescription to handle the gold containing material of grade 50-84%, then divide silver with nitric acid earlier after, produce the bronze of purity more than 85% and purify with the solution of the present invention again.And dissolve gold, reduction gold can be carried out in plastic tank.In sum, weighing technical scheme that the present invention relates to and the long-pending power effect that method produced that realizes these schemes can be illustrated by following index and benefit:
Gold dissolution time 30 minutes
30 minutes recovery times of gold
Golden purity after purifying: 〉=99.9%
The gold purification rate of recovery: 〉=99.995%
Gold purification production cost: calculate by the every gram proof gold of output
1) golden purification reagent cost: 0.045 yuan/gram
2) golden purification total cost: 0.1 yuan/gram
Throughput: 30 fens jin/days, the 100 kilograms of gold of can purifying in continuous 2 day time.
Economic benefit: behind every gram gold purification deduction cost, its profit is 0.6 yuan, and the benefit after each hundred kilograms of gold purification is 60,000 yuan.
Claims (6)
1. one kind is used to carry pure gold prescription, and it comprises the medicament of molten gold and the medicament of reduction gold, it is characterized in that the drug prescription composition of described dissolve gold is: sodium oxide (NaCL), potassium permanganate (KMnO4), hydrochloric acid (HCL), nitric acid (HNO3); The drug prescription of described reduction gold is hydrazine hydrate (N2H4.H2O), sodium hydroxide (NaOH).
2. according to claim 1ly be used to carry pure gold prescription, it is characterized in that above-mentioned dissolve gold medicament, its best proportional quantity as calculating by the gold * gram of purifying then is: sodium-chlor (NaCL): 100～110 * %, potassium permanganate (KMnO4): 6～7 * %, hydrochloric acid (HCL): 200～220 * %, nitric acid (HNO3): 50～60 * %.
3. according to claim 1ly be used to carry pure gold prescription, it is characterized in that above-mentioned reduction gold medicament, its best proportional quantity is as then being hydrazine hydrate (N2H4H2O): 90～95 * % by the gold * gram calculating of purifying, sodium hydroxide (NaOH) 16 * 18%.
4. describedly be used to carry pure gold prescription according to claim 1 and 3, the prescription composition that it is characterized in that above-mentioned reduction gold medicament can also be hydrazine hydrate, potassium hydroxide, and their optimum amount proportioning is: hydrazine hydrate 90～95 * %, potassium hydroxide 16～18 * %.
5. one kind is used to put forward pure gold method using fast wet gold method of purification, it is characterized in that:
A. the gold containing material powder of poly-certain grade is in container;
B. earlier the gold containing material powder is added in the fusion device, add KMnO4, NaCL, HCL, HNO3 more in proportion;
C. filter and separate out golden liquid, silver suboxide;
D. golden liquid is inserted in the reduction jar, add hydrazine hydrate and sodium hydroxide then in proportion, get proof gold powder and waste liquid;
E. silver chloride is carried out zinc dust precipitation after melting gets silver ingot;
F. with proof gold powder filtration washing after melting gets fine bullion.
6. according to claim 5ly be used to put forward pure gold method using fast wet gold method of purification, it is characterized in that above-mentioned step C, the processing step after it can carry out simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97121757A CN1220318A (en) | 1997-12-17 | 1997-12-17 | Formula for purifying gold and gold purifying method using fast wet method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97121757A CN1220318A (en) | 1997-12-17 | 1997-12-17 | Formula for purifying gold and gold purifying method using fast wet method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1220318A true CN1220318A (en) | 1999-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97121757A Pending CN1220318A (en) | 1997-12-17 | 1997-12-17 | Formula for purifying gold and gold purifying method using fast wet method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103834811A (en) * | 2014-03-14 | 2014-06-04 | 昆明贵益金属材料有限公司 | Method for selectively extracting gold from complex gold-containing waste |
| CN110205500A (en) * | 2019-06-18 | 2019-09-06 | 山东黄金冶炼有限公司 | The removal methods of impurity in a kind of reduction bronze |
| CN110643827A (en) * | 2019-10-22 | 2020-01-03 | 贵州大学 | Green method for dissolving and extracting gold element |
-
1997
- 1997-12-17 CN CN97121757A patent/CN1220318A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103834811A (en) * | 2014-03-14 | 2014-06-04 | 昆明贵益金属材料有限公司 | Method for selectively extracting gold from complex gold-containing waste |
| CN110205500A (en) * | 2019-06-18 | 2019-09-06 | 山东黄金冶炼有限公司 | The removal methods of impurity in a kind of reduction bronze |
| CN110205500B (en) * | 2019-06-18 | 2021-09-17 | 山东黄金冶炼有限公司 | Method for removing impurities in reduced gold powder |
| CN110643827A (en) * | 2019-10-22 | 2020-01-03 | 贵州大学 | Green method for dissolving and extracting gold element |
| CN110643827B (en) * | 2019-10-22 | 2022-02-18 | 贵州大学 | Green method for dissolving and extracting gold element |
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