CN106367609A - Vacuum-refining purification method for raw gold - Google Patents
Vacuum-refining purification method for raw gold Download PDFInfo
- Publication number
- CN106367609A CN106367609A CN201610965709.4A CN201610965709A CN106367609A CN 106367609 A CN106367609 A CN 106367609A CN 201610965709 A CN201610965709 A CN 201610965709A CN 106367609 A CN106367609 A CN 106367609A
- Authority
- CN
- China
- Prior art keywords
- gold
- vacuum
- temperature
- purification
- purification method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 47
- 239000010931 gold Substances 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000007670 refining Methods 0.000 title claims abstract description 23
- 238000000746 purification Methods 0.000 title claims abstract description 19
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 238000004821 distillation Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 239000000498 cooling water Substances 0.000 claims abstract description 6
- 238000010792 warming Methods 0.000 claims description 6
- 238000001291 vacuum drying Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000003912 environmental pollution Methods 0.000 abstract description 5
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 238000005520 cutting process Methods 0.000 abstract 1
- 238000005272 metallurgy Methods 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 229910052725 zinc Inorganic materials 0.000 abstract 1
- 241000416536 Euproctis pseudoconspersa Species 0.000 description 4
- 229910001069 Ti alloy Inorganic materials 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 238000005868 electrolysis reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000001036 glow-discharge mass spectrometry Methods 0.000 description 4
- 238000005660 chlorination reaction Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 229910003803 Gold(III) chloride Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- RJHLTVSLYWWTEF-UHFFFAOYSA-K gold trichloride Chemical compound Cl[Au](Cl)Cl RJHLTVSLYWWTEF-UHFFFAOYSA-K 0.000 description 2
- NICDRCVJGXLKSF-UHFFFAOYSA-N nitric acid;trihydrochloride Chemical compound Cl.Cl.Cl.O[N+]([O-])=O NICDRCVJGXLKSF-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002887 superconductor Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/02—Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
-
- 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
Abstract
The invention relates to a vacuum-refining purification method for raw gold and belongs to the technical field of metallurgy. The vacuum-refining purification method comprises the following steps: firstly cutting the raw gold into small pieces; vacuumizing in a vacuum furnace until the pressure is 30Pa to 100Pa; heating to a temperature of 1550 to 1650 DEG C; performing constant-temperature distillation for 60min; during distillation, controlling the temperature of a condensing cover to be 400 to 800 DEG C by using circulating cooling water in order to obtain distilments, and obtaining residues after distillation is ended. The vacuum-refining purification method for raw gold is capable of overcoming the problems that the prior art is complicated in operation process, long in production period, large in environmental pollution, high in cost and the like, so impurity elements such as Ag, Zn, Cu and Ni can be effectively removed.
Description
Technical field
The present invention relates to one kind slightly golden vacuum refining method of purification, belong to metallurgical technology field.
Background technology
Gold is the metal that the mankind more early find and utilize, and because it is rare, special and precious, is considered five since ancient times
First of gold, there is the title of the king of metal.It has high erosion-resisting stability；Good electric conductivity and heat conductivity；Gold
Atomic nucleus have the effective cross-section of larger capture neutron；There are in golden alloy various catalyst properties.In recent years, with integrated
The development of circuit, as the gold of the optimal superconductor of electronic integrated board, purity is higher, and its data transmission efficiency is higher, at present
The gold that space flight and aviation technically uses is all High Purity Gold.
At present, most gold manufacturing enterprises, thick gold refining purifying technique main in a wet process based on, have electrorefining to carry
Pure, high-temp chlorination Refining, chloroazotic acid Refining and secondary chlorination-secondary reduction refining and purification process.
Baiyin Nonferrous Metal Group Co., Ltd.'s patent application 201310533395.7 discloses Wang Yinxiang, Feng Zhibing et al.
Invent a kind of method improving gold precipitation grade in Gold electrolysis refinery practice.The feature of the method is with thick golden plate as anode,
With proof gold plate as negative electrode, electrorefining is carried out for electrolyte with Auric chloride. solution, the outside of described anode is arranged with by third
The pocket shape barrier film that American run becomes, the mesh of barrier film is 800～850 mesh.Described negative electrode is made up of following methods: with thick golden plate is
Anode, with titanium alloy sheet, is electrolysed with Auric chloride. solution for electrolyte, separates out pure after a period of time in titanium alloy sheet both sides
Layer gold, proof gold layer is peeled off and obtains final product Gold electrolysis minus plate.When preparing Gold electrolysis minus plate, replace silver plate with titanium alloy sheet and make
For negative electrode, because Titanium has good chemical stability, there is good corrosion resistance in the electrolytic solution, and be electrolysed
In journey, titanium alloy sheet surface can form the oxide-film of continuous dense uniform and make golden starting sheet so that proof gold layer is easily peeled off
Make easier.But because electrolysis technology condition has high demands, golden backlog is big, and production cost is high, and uses in production process
So that production equipment seriously corroded, poor working environment, there is certain danger in concentrated acid, highly basic etc..Ministry of Metallurgical Industry Changchun is yellow
The cn01100059.7 of golden academy application discloses a kind of Amminochloride process of purifying gold, and it includes following step:
Nitric acid remove impurity, filtration washing, chlorination leaching gold, filtration washing, golden reduction, filtration washing, golden melting.The method complex operation and
Produce and use the reagent that strong acid etc. has certain risk, production environment is poor, has certain limitation for large-scale promotion.
High-temp chlorination refining and purification process environmental pollution is big, and product quality is difficult to stably reaching standard, and operating process complicated difficult
To grasp it is desirable to the index controlling is more, it is difficult to realize automatization, scale, is only suitable for small-scale production.Chloroazotic acid Refining
It is refining and purification process the most ancient, its long the production cycle, environmental pollution is big, and has substantial amounts of liquid to need to process.Therefore urgently
Efficiency high to be developed, the new technology that investment is little, environmental pollution is little, simple to operate.Through research, slightly golden vacuum distilling refine carries
Pure have good effect.
Content of the invention
The problem existing for above-mentioned prior art and deficiency, the present invention provides one kind slightly golden vacuum refining method of purification.Should
Slightly vacuum refining method of purification overcomes operating process complexity in existing process, long the production cycle to gold, environmental pollution is big, cost is high etc.
So that ag, zn, cu, ni impurity element effectively removes, the present invention is achieved through the following technical solutions problem.
One kind slightly golden vacuum refining method of purification, it specifically comprises the following steps that and first thick gold is cut into small pieces, is placed in vacuum drying oven
It is evacuated to 30～100pa, be warming up to temperature for, after 1550 DEG C～1650 DEG C, constant temperature distills 60min, period passes through circulating cooling
The temperature of water management condensing cover obtains distillation to 400 DEG C～800 DEG C, obtains residue after terminating.
In described thick gold, the mass percent containing gold is 90～95%, also comprises ag, zn, cu and ni impurity.
Described vacuum drying oven heating rate is 10 DEG C/min.
The invention has the beneficial effects as follows: operating process of the present invention is simple, energy consumption is low, on environment almost without impact, remove impurity effect
Really good, applied widely it is easy to implement and industrialization promotion.
Specific embodiment
With reference to specific embodiment, the invention will be further described.
Embodiment 1
This thick gold vacuum refining method of purification, it specifically comprises the following steps that (slightly in gold, the mass percent containing gold is by slightly gold first
93.98%, also comprise impurity ag2.25wt%, zn0.3wt%, cu3.454wt% and ni0.205wt%) be cut into small pieces, it is placed in vacuum
It is evacuated to 60pa in stove, temperature is warming up to for after 1550 DEG C with 10 DEG C/min heating rate, constant temperature distills 60min, period leads to
The temperature overregulating circulating cooling water management condensing cover obtains distillation to 800 DEG C, obtains residue after terminating.
Residue obtained above mass percent of gold after glow discharge mass spectroscopy detection is 99%, impure
Ag0.000005wt%, zn0.000599wt%, cu0.88wt% and ni0.036wt%.
Embodiment 2
This thick gold vacuum refining method of purification, it specifically comprises the following steps that (slightly in gold, the mass percent containing gold is by slightly gold first
91.20%, also comprise impurity ag3.06wt%, zn0.5wt%, cu2.89wt% and ni2.35wt%) be cut into small pieces, it is placed in vacuum drying oven
In be evacuated to 30pa, temperature is warming up to for after 1600 DEG C with 10 DEG C/min heating rate, constant temperature distills 60min, and period passes through
The temperature of circulating cooling water management condensing cover obtains distillation to 400 DEG C, obtains residue after terminating.
Residue obtained above mass percent of gold after glow discharge mass spectroscopy detection is 99%, impure
Ag0.000047wt%, zn0.000517wt%, cu0.62wt% and ni0.046wt%.
Embodiment 3
This thick gold vacuum refining method of purification, it specifically comprises the following steps that (slightly in gold, the mass percent containing gold is by slightly gold first
97.79%, also comprise impurity ag1.25wt%, zn0.3wt%, cu0.454wt% and ni0.205wt%) be cut into small pieces, it is placed in vacuum
It is evacuated to 100pa in stove, temperature is warming up to for after 1625 DEG C with 10 DEG C/min heating rate, constant temperature distills 60min, period leads to
The temperature crossing circulating cooling water management condensing cover obtains distillation to 600 DEG C, obtains residue after terminating.
Residue obtained above mass percent of gold after glow discharge mass spectroscopy detection is 99%, impure
Ag0.000121wt%, zn0.000429wt%, cu0.18wt% and ni0.040wt%.
Embodiment 4
This thick gold vacuum refining method of purification, it specifically comprises the following steps that (slightly in gold, the mass percent containing gold is by slightly gold first
93.98%, also comprise impurity ag2.25wt %, zn0.3wt %, cu3.454wt% and ni0.205wt%) be cut into small pieces, it is placed in true
It is evacuated to 80pa in empty stove, temperature is warming up to for after 1650 DEG C with 10 DEG C/min heating rate, constant temperature distills 60min, period
Distillation is obtained to 650 DEG C by the temperature of circulating cooling water management condensing cover, after terminating, obtains residue.
Residue obtained above mass percent of gold after glow discharge mass spectroscopy detection is 99%, impure
Ag0.00015wt%, zn0.000617wt%, cu0.37wt% and ni0.082wt%.
Above the specific embodiment of the present invention is explained in detail, but the present invention is not limited to above-mentioned embodiment party
Formula, in the ken that those of ordinary skill in the art possess, can also make on the premise of without departing from present inventive concept
Go out various change.
Claims (3)
1. slightly thick gold is cut into small pieces first one kind by golden vacuum refining method of purification it is characterised in that specifically comprising the following steps that, is placed in true
It is evacuated to 30～100pa in empty stove, be warming up to temperature for, after 1550 DEG C～1650 DEG C, constant temperature distills 60min, period passes through to follow
The temperature of ring cooling water control condensing cover obtains distillation to 400 DEG C～800 DEG C, obtains residue after terminating.
2. according to claim 1 thick gold vacuum refining method of purification it is characterised in that: described thick gold in containing gold quality hundred
Divide ratio for 90～95%, also comprise ag, zn, cu and ni impurity.
3. according to claim 1 thick gold vacuum refining method of purification it is characterised in that: described vacuum drying oven heating rate be 10
℃/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610965709.4A CN106367609B (en) | 2016-10-28 | 2016-10-28 | A kind of thick golden vacuum refining method of purification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610965709.4A CN106367609B (en) | 2016-10-28 | 2016-10-28 | A kind of thick golden vacuum refining method of purification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106367609A true CN106367609A (en) | 2017-02-01 |
| CN106367609B CN106367609B (en) | 2019-01-04 |
Family
ID=57894157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610965709.4A Active CN106367609B (en) | 2016-10-28 | 2016-10-28 | A kind of thick golden vacuum refining method of purification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106367609B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112322904A (en) * | 2020-10-12 | 2021-02-05 | 昆明鼎邦科技股份有限公司 | Method for vacuum separation of gold, silver and copper alloy |
| US11319613B2 (en) | 2020-08-18 | 2022-05-03 | Enviro Metals, LLC | Metal refinement |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU94022666A (en) * | 1994-06-10 | 1996-04-10 | Научно-производственное объединение "Вектор" | Apparatus for separation of metals by vacuum distillation |
| JPH108165A (en) * | 1996-06-21 | 1998-01-13 | Dowa Mining Co Ltd | High-purity silver wire for recording or acoustic or image transmission |
| CN101560606A (en) * | 2009-05-19 | 2009-10-21 | 昆明鼎邦科技有限公司 | Deleading method through vacuum distillation of noble lead materials |
| CN101696469A (en) * | 2009-10-29 | 2010-04-21 | 昆明理工大学 | Method for separating multi-element alloy of lead, bismuth, gold, silver and copper |
| EP3029165A1 (en) * | 2013-07-30 | 2016-06-08 | Obschestvo S Ogranichennoi Otvetstvennostyu "Ez OTSM-Inginiring" | Method for separating gold-silver alloys by vacuum distillation and device for realization thereof |
-
2016
- 2016-10-28 CN CN201610965709.4A patent/CN106367609B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU94022666A (en) * | 1994-06-10 | 1996-04-10 | Научно-производственное объединение "Вектор" | Apparatus for separation of metals by vacuum distillation |
| JPH108165A (en) * | 1996-06-21 | 1998-01-13 | Dowa Mining Co Ltd | High-purity silver wire for recording or acoustic or image transmission |
| CN101560606A (en) * | 2009-05-19 | 2009-10-21 | 昆明鼎邦科技有限公司 | Deleading method through vacuum distillation of noble lead materials |
| CN101696469A (en) * | 2009-10-29 | 2010-04-21 | 昆明理工大学 | Method for separating multi-element alloy of lead, bismuth, gold, silver and copper |
| EP3029165A1 (en) * | 2013-07-30 | 2016-06-08 | Obschestvo S Ogranichennoi Otvetstvennostyu "Ez OTSM-Inginiring" | Method for separating gold-silver alloys by vacuum distillation and device for realization thereof |
Non-Patent Citations (1)
| Title |
|---|
| 杨斌，戴永年: "《真空冶炼法提取金属锂的研究》", 31 May 1999 * |
Cited By (3)
| 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 |
| CN112322904A (en) * | 2020-10-12 | 2021-02-05 | 昆明鼎邦科技股份有限公司 | Method for vacuum separation of gold, silver and copper alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106367609B (en) | 2019-01-04 |
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