CN113802012A - Method for separating gold from thiosulfate gold leaching solution - Google Patents
Method for separating gold from thiosulfate gold leaching solution Download PDFInfo
- Publication number
- CN113802012A CN113802012A CN202111046550.3A CN202111046550A CN113802012A CN 113802012 A CN113802012 A CN 113802012A CN 202111046550 A CN202111046550 A CN 202111046550A CN 113802012 A CN113802012 A CN 113802012A
- Authority
- CN
- China
- Prior art keywords
- gold
- leaching solution
- thiosulfate
- extraction
- organic phase
- 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.)
- Pending
Links
- 239000010931 gold Substances 0.000 title claims abstract description 62
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 53
- 238000002386 leaching Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 23
- DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 title claims abstract 10
- 238000000605 extraction Methods 0.000 claims abstract description 40
- 239000012074 organic phase Substances 0.000 claims abstract description 29
- GPAYUJZHTULNBE-UHFFFAOYSA-N diphenylphosphine Chemical group C=1C=CC=CC=1PC1=CC=CC=C1 GPAYUJZHTULNBE-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000008346 aqueous phase Substances 0.000 claims description 25
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 24
- 239000012071 phase Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 abstract description 3
- 239000010970 precious metal Substances 0.000 abstract description 2
- DHCDFWKWKRSZHF-UHFFFAOYSA-L thiosulfate(2-) Chemical compound [O-]S([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-L 0.000 description 14
- 239000003795 chemical substances by application Substances 0.000 description 8
- ZBKIUFWVEIBQRT-UHFFFAOYSA-N gold(1+) Chemical compound [Au+] ZBKIUFWVEIBQRT-UHFFFAOYSA-N 0.000 description 3
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- XGRJZXREYAXTGV-UHFFFAOYSA-N chlorodiphenylphosphine Chemical compound C=1C=CC=CC=1P(Cl)C1=CC=CC=C1 XGRJZXREYAXTGV-UHFFFAOYSA-N 0.000 description 2
- 125000004437 phosphorous atom Chemical group 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- QRJOYPHTNNOAOJ-UHFFFAOYSA-N copper gold Chemical compound [Cu].[Au] QRJOYPHTNNOAOJ-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- MXZVHYUSLJAVOE-UHFFFAOYSA-N gold(3+);tricyanide Chemical compound [Au+3].N#[C-].N#[C-].N#[C-] MXZVHYUSLJAVOE-UHFFFAOYSA-N 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Images
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
- C22B11/04—Obtaining noble metals by wet processes
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for separating gold from thiosulfate gold leaching solution, and belongs to the field of precious metal recovery. Preparing thiosulfate gold leaching solution and an organic phase containing extraction components, and performing extraction separation on the gold leaching solution and a certain amount of an extracting agent; the extracting agent is diphenylphosphine and derivatives thereof, has simple structure and easy acquisition, and has good extraction and separation effects on hardware in thiosulfate gold leaching solution; the extraction separation method provided by the invention is not influenced by the pH of the thiosulfate gold leaching solution, and the method has the advantages of simple process and short time consumption.
Description
Technical Field
The invention belongs to the field of precious metal recovery, and particularly relates to a method for separating gold from thiosulfate gold leaching solution.
Background
Gold as a noble metal has unique physical properties, and is not only an important material in the departments of jewelry industry, electronic industry, modern communication, aerospace industry and the like, but also a special currency for storage and investment. However, the average content of gold in the crust is only 1.1 parts per billion, and the pure gold in nature is very little, and is often associated with elements such as sulfur, iron, copper and the like in minerals, so that the extraction method of gold is particularly difficult. At present, the main gold extraction method is the cyanidation method, but because cyanide is a highly toxic substance and the cyanidation method can generate a large amount of cyanide-containing waste and waste liquid to cause environmental pollution, the cyanidation method is strictly controlled or prohibited by some countries. The thiosulfate gold leaching method is a non-cyanide gold extraction technology which is most likely to replace a cyanidation method due to the characteristics of no toxicity, environmental protection and high efficiency, and capability of treating carbonaceous gold ores, sulfur-containing gold ores or copper gold ores which cannot be treated by the cyanidation method.
Solvent extraction is used as a gold separation method, and the method has the advantages of simple process, easy operation and good separation effect; aiming at the separation and extraction of Au (I) in a thiosulfate gold leaching system, a solvent extraction system is usually constructed by amine or quaternary ammonium salt and other substances; although these extraction systems have a certain extraction effect on gold in a thiosulfate gold leaching method, the extraction systems also have the problems of poor stability, large influence of pH, limited types of extractants and the like.
Disclosure of Invention
The invention aims to solve the problems of gold extraction and separation in a thiosulfate gold leaching system, and provides a method for separating gold from thiosulfate gold leaching solution, wherein the whole extraction process is simple and easy to operate, and has large extraction flux, and the method specifically comprises the following steps:
(1) dissolving diphenylphosphine and its derivatives in organic solvent to form organic phase.
(2) Leaching gold ore by a thiosulfate method to extract gold, and taking the leaching liquid as a water phase; the organic and aqueous phases were mixed and Au (I) was extracted into the organic phase.
Preferably, the organic phase in step (1) of the present invention is toluene, and the concentration of diphenylphosphine and its derivatives is 5-8 mmol/L.
Preferably, the extraction temperature in the step (2) is 10-55 ℃, and the extraction time is 10 min.
Preferably, the volume ratio of the organic phase to the aqueous phase in the step (2) of the present invention is 1 (2-10).
The structural formula of the extracting agent diphenylphosphine and the derivatives thereof is as follows:
The phosphorus atom of the diphenyl phosphine provides a lone pair of electrons to the gold (I) with an empty orbit, and a coordination bond is formed between the phosphorus atom and the gold (I), so that the chlorodiphenyl phosphine can form a complex with the gold (I) in the solution, and the gold (I) is extracted from the solution.
The invention has the beneficial effects that:
(1) the invention provides a novel extracting agent diphenylphosphine and a derivative thereof, wherein the extracting agent can well extract Au (I) in a thiosulfate gold leaching system.
(2) The extraction separation method provided by the invention is less influenced by the pH value of the water phase, and has better adsorption effect within the range that the pH value is more than or equal to 6.
(3) The invention has simple and easy operation, high extraction rate and good effect, and can realize the quick extraction and recovery of the cash only needing 10 min.
Drawings
FIG. 1 is a flow diagram of the extraction process of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments, but the present invention is not limited thereto
Not limited to the contents.
Example 1
(1) The diphenylphosphine is dissolved in toluene to form an organic phase, and the concentration of the extracting agent is 5 mmol/L.
(2) In this example, a leaching solution of gold ore is used as an aqueous phase, and the leaching solution contains Au (S)2O3)2 3-Concentration of 20.5 mg/L, Cu2+Concentration of 5mmol/L, NH3/NH4+The concentration is 80 mmol/L, S2O3 2-The concentration is 0.1 mol/L; the aqueous phase was adjusted to pH 6.
(3) Mixing 10mL of organic phase and 20mL of aqueous phase, extracting for 10min at 15 ℃, shaking in the extraction process to ensure that the aqueous phase and the organic phase are fully contacted, and calculating the gold extraction rate to be 98 percent after the extraction is finished.
Example 2
(1) The diphenylphosphine is dissolved in toluene to form an organic phase, and the concentration of the extracting agent is 6 mmol/L.
(2) In this example, a leaching solution of gold ore is used as an aqueous phase, and the leaching solution contains Au (S)2O3)2 3-At a concentration of
12.3 mg/L，Cu2+Concentration of 5mmol/L, NH3/NH4+The concentration is 80 mmol/L, S2O3 2-The concentration is 0.1 mol/L; the aqueous phase was adjusted to pH 7.
(3) Mixing 10mL of organic phase and 40mL of water phase, extracting for 10min at 25 ℃, shaking in the extraction process to ensure that the water phase and the organic phase are fully contacted, and calculating the gold extraction rate to be 96% after the extraction is finished.
Example 3
(1) The diphenylphosphine was dissolved in toluene to form an organic phase, and the concentration of the extractant was 7 mmol/L.
(2) In this example, a leaching solution of gold ore is used as an aqueous phase, and the leaching solution contains Au (S)2O3)2 3-Concentration of 20.5 mg/L, Cu2+Concentration of 5mmol/L, NH3/NH4+The concentration is 80 mmol/L, S2O3 2-The concentration is 0.1 mol/L; the aqueous phase was adjusted to pH 8.
(3) Mixing 10mL of organic phase and 20mL of aqueous phase, extracting for 10min at 35 ℃, shaking in the extraction process to ensure that the aqueous phase and the organic phase are fully contacted, and calculating the gold extraction rate to be 98 percent after the extraction is finished.
Example 4
(1) The diphenylphosphine is dissolved in toluene to form an organic phase, and the concentration of the extracting agent is 8 mmol/L.
(2) In this example, a leaching solution of gold ore is used as an aqueous phase, and the leaching solution contains Au (S)2O3)2 3-The concentration is 50.6 mg/L, Cu2+Concentration of 5mmol/L, NH3/NH4+The concentration is 80 mmol/L, S2O3 2-Concentration ofIs 0.1 mol/L; the aqueous phase was adjusted to pH 9.
(3) Mixing 10mL of organic phase and 20mL of aqueous phase, extracting for 10min at 45 ℃, shaking in the extraction process to ensure that the aqueous phase and the organic phase are fully contacted, and calculating the gold extraction rate to be 86 percent after the extraction is finished.
Example 5
(1) The diphenylphosphine is dissolved in toluene to form an organic phase, and the concentration of the extracting agent is 8 mmol/L.
(2) Configuration of 80mg/L Au (S)2O3)2 3-The simulated solution was an aqueous phase, which was adjusted to pH 11.
(3) Mixing 10mL of organic phase and 30mL of aqueous phase, extracting for 10min at 25 ℃, shaking in the extraction process to ensure that the aqueous phase and the organic phase are fully contacted, and calculating the gold extraction rate to be 99 percent after the extraction is finished.
Example 6
(1) The chlorodiphenylphosphine is dissolved in toluene to form an organic phase, and the concentration of the extracting agent is 8 mmol/L.
(2) In this example, a leaching solution of gold ore is used as an aqueous phase, and the leaching solution contains Au (S)2O3)2 3-The concentration is 50.6 mg/L, Cu2+The concentration is 5mmol/L, NH3/NH4 +The concentration is 80 mmol/L, S2O3 2-The concentration is 0.1 mol/L; the aqueous phase was adjusted to pH 9.
(3) Mixing 10mL of organic phase and 20mL of aqueous phase, extracting for 10min at 45 ℃, shaking in the extraction process to ensure that the aqueous phase and the organic phase are fully contacted, and calculating the gold extraction rate to be 81 percent after the extraction is finished.
While the present invention has been described in detail with reference to the specific embodiments thereof, the present invention is not limited to the embodiments described above, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (4)
1. A method for separating gold from thiosulfate gold leaching solution is characterized by comprising the following steps:
(1) dissolving diphenylphosphine and its derivatives in an organic solvent to form an organic phase;
(2) leaching gold ore by a thiosulfate method to extract gold, and taking the leaching liquid as a water phase; the organic and aqueous phases were mixed and Au (I) was extracted into the organic phase.
2. The method of separating gold in a thiosulfate gold leaching solution of claim 1, characterized in that: the organic phase in the step (1) is toluene, and the concentration of the diphenylphosphine and the derivative thereof is 5-8 mmol/L.
3. The method of separating gold in a thiosulfate gold leaching solution of claim 1, characterized in that: the extraction temperature in the step (2) is 10-55 ℃, and the extraction time is 10 min.
4. The method of separating gold in a thiosulfate gold leaching solution of claim 1, characterized in that: the volume ratio of the organic phase to the aqueous phase in the step (2) is 1 (2-10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111046550.3A CN113802012A (en) | 2021-09-08 | 2021-09-08 | Method for separating gold from thiosulfate gold leaching solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111046550.3A CN113802012A (en) | 2021-09-08 | 2021-09-08 | Method for separating gold from thiosulfate gold leaching solution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113802012A true CN113802012A (en) | 2021-12-17 |
Family
ID=78940807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111046550.3A Pending CN113802012A (en) | 2021-09-08 | 2021-09-08 | Method for separating gold from thiosulfate gold leaching solution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113802012A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115232964A (en) * | 2022-08-15 | 2022-10-25 | 云南大学 | Method for extracting gold from alkaline solution containing aurous thiosulfate complex based on natural eutectic solvent |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010179287A (en) * | 2009-02-09 | 2010-08-19 | National Institute Of Advanced Industrial Science & Technology | Extracting agent consisting of phosphorus-containing polymer |
| CN101824545A (en) * | 2010-02-10 | 2010-09-08 | 昆明理工大学 | Method for extracting gold from thiosulfate adopting ethanediamine as additive |
| CN108546827A (en) * | 2018-05-14 | 2018-09-18 | 中南大学 | A method of soaking gold using ferrous ion, magnesium thiosulfate |
| CN110042235A (en) * | 2019-04-29 | 2019-07-23 | 山东大学 | A kind of extractant and extracting process of separation gold |
| CN112267030A (en) * | 2020-11-02 | 2021-01-26 | 昆明理工大学 | Method for directly recovering gold in thiosulfate system by using active carbon |
-
2021
- 2021-09-08 CN CN202111046550.3A patent/CN113802012A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010179287A (en) * | 2009-02-09 | 2010-08-19 | National Institute Of Advanced Industrial Science & Technology | Extracting agent consisting of phosphorus-containing polymer |
| CN101824545A (en) * | 2010-02-10 | 2010-09-08 | 昆明理工大学 | Method for extracting gold from thiosulfate adopting ethanediamine as additive |
| CN108546827A (en) * | 2018-05-14 | 2018-09-18 | 中南大学 | A method of soaking gold using ferrous ion, magnesium thiosulfate |
| CN110042235A (en) * | 2019-04-29 | 2019-07-23 | 山东大学 | A kind of extractant and extracting process of separation gold |
| CN112267030A (en) * | 2020-11-02 | 2021-01-26 | 昆明理工大学 | Method for directly recovering gold in thiosulfate system by using active carbon |
Non-Patent Citations (4)
| Title |
|---|
| 中国科学院黄金科技工作领导小组办公室编: "《中国金矿研究新进展 第3卷 黄金提取研究与开发》", 30 September 1996, 北京：冶金工业出版社 * |
| 冶金工业出版社《中国冶金百科全书》编辑部编: "《中国冶金百科全书 有色金属冶金》", 31 January 1999, 北京：冶金工业出版社 * |
| 赖才书等: "硫代硫酸盐浸金溶液中金的回收研究现状及发展趋势", 《矿冶》 * |
| 陈泽林编著, 海口：南海出版公司 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115232964A (en) * | 2022-08-15 | 2022-10-25 | 云南大学 | Method for extracting gold from alkaline solution containing aurous thiosulfate complex based on natural eutectic solvent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ashiq et al. | Hydrometallurgical recovery of metals from e-waste | |
| JP7360507B2 (en) | Method for selective leaching and extraction of precious metals in organic solvents | |
| CN105970007B (en) | A kind of method that association rhenium resource is reclaimed in the poor resin from sandstone-type uranium mineralization with respect ground dipping uranium extracting process | |
| Zhang et al. | Removal of iron from sythetic copper leach solution using a hydroxy-oxime chelating resin | |
| Baba et al. | Solvent extraction of Pb (II) and Zn (II) from a Nigerian galena ore leach liquor by tributylphosphate and bis (2, 4, 4-trimethylpentyl) phosphinic acid | |
| Jun et al. | Simple recycling of copper by the synergistic exploitation of industrial wastes: a step towards sustainability | |
| Yang et al. | Extraction of Au (I) from aurocyanide solution by using a synergistic system of primary amine N1923/bis (2-ethylhexyl) sulfoxide: a mechanism study | |
| Chauhan et al. | A review on solvent extraction of nickel | |
| Alguacil et al. | Solvent extraction of indium (III) from HCl solutions by the ionic liquid (A324H+)(Cl−) dissolved in Solvesso 100 | |
| CN113802012A (en) | Method for separating gold from thiosulfate gold leaching solution | |
| Zeng et al. | A novel functionalized ionic liquid [DOC4mim][DEHG] for impurity removal of aluminum in rare earth leaching solution | |
| CN103740930A (en) | Thiosulfate gold extraction method taking alkyl trimethyl quaternary ammonium salt as additive | |
| Love et al. | New insights into the recovery of strategic and critical metals by solvent extraction: The effects of chemistry and the process on performance | |
| US20160298248A1 (en) | Recovery of Copper from Copper-Containing Sulfide Ores | |
| JP5502178B2 (en) | Silver recovery method | |
| CN104928494A (en) | Efficient method for selective separation of copper from ammonia-ammonium salt solution of copper, cobalt and nickel | |
| CN114317961B (en) | Co-extraction system for nickel-cobalt co-extraction and co-extraction method thereof | |
| Jalil et al. | Recovery of gold in solution from electronic waste by di (2-ethylhexyl) phosphoric acid | |
| US20220298600A1 (en) | Method for processing ore or refining intermediate | |
| ES2889149T3 (en) | Separation procedure of palladium from other metallic elements present in an aqueous nitric phase using particular malonamides as extractants | |
| KR101950110B1 (en) | Separation method of paladium and platium | |
| CN109499625B (en) | High-efficiency elution method for gold-loaded resin | |
| US3089885A (en) | Process for the selective recovery of uranium directly from uranium-bearing ores | |
| CN113832343A (en) | Method for recovering gold in thiosulfate gold leaching system by precipitation method | |
| El Salmawy | Adsorption of Gold from Acid Thiourea and Chloride Solutions by Ion Exchange Resins. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211217 |
|
| RJ01 | Rejection of invention patent application after publication |