CN113621827A - Method for synchronously recovering gold and value-added utilizing antimony from antimony-containing gold ore - Google Patents
Method for synchronously recovering gold and value-added utilizing antimony from antimony-containing gold ore Download PDFInfo
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- CN113621827A CN113621827A CN202110974325.XA CN202110974325A CN113621827A CN 113621827 A CN113621827 A CN 113621827A CN 202110974325 A CN202110974325 A CN 202110974325A CN 113621827 A CN113621827 A CN 113621827A
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- 239000010931 gold Substances 0.000 title claims abstract description 173
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 172
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 172
- 229910052787 antimony Inorganic materials 0.000 title claims abstract description 138
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 title claims abstract description 138
- 238000000034 method Methods 0.000 title claims abstract description 32
- YPMOSINXXHVZIL-UHFFFAOYSA-N sulfanylideneantimony Chemical compound [Sb]=S YPMOSINXXHVZIL-UHFFFAOYSA-N 0.000 claims abstract description 47
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 32
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 29
- 239000011593 sulfur Substances 0.000 claims abstract description 29
- 238000002386 leaching Methods 0.000 claims abstract description 27
- 238000004073 vulcanization Methods 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- 239000000243 solution Substances 0.000 claims abstract description 16
- 239000012670 alkaline solution Substances 0.000 claims abstract description 13
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 239000007787 solid Substances 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims abstract description 7
- 239000011261 inert gas Substances 0.000 claims abstract description 7
- 238000005406 washing Methods 0.000 claims abstract description 7
- 239000007792 gaseous phase Substances 0.000 claims abstract description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- 238000004070 electrodeposition Methods 0.000 claims description 15
- 229910052979 sodium sulfide Inorganic materials 0.000 claims description 6
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims description 6
- 229910052947 chalcocite Inorganic materials 0.000 claims description 3
- 229910052683 pyrite Inorganic materials 0.000 claims description 3
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims description 3
- 239000011028 pyrite Substances 0.000 claims description 3
- 229910052948 bornite Inorganic materials 0.000 claims description 2
- 229910052951 chalcopyrite Inorganic materials 0.000 claims description 2
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 claims description 2
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 229910052961 molybdenite Inorganic materials 0.000 claims description 2
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 4
- 229910000510 noble metal Inorganic materials 0.000 abstract 1
- 238000009856 non-ferrous metallurgy Methods 0.000 abstract 1
- 229910052785 arsenic Inorganic materials 0.000 description 16
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 16
- 239000012071 phase Substances 0.000 description 9
- GJJDHSBABFZVRQ-UHFFFAOYSA-N [Na+].[Na+].[Na+].[O-][Sb]([O-])([O-])=S Chemical compound [Na+].[Na+].[Na+].[O-][Sb]([O-])([O-])=S GJJDHSBABFZVRQ-UHFFFAOYSA-N 0.000 description 8
- 238000003723 Smelting Methods 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 239000001307 helium Substances 0.000 description 3
- 229910052734 helium Inorganic materials 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- KAPYVWKEUSXLKC-UHFFFAOYSA-N [Sb].[Au] Chemical compound [Sb].[Au] KAPYVWKEUSXLKC-UHFFFAOYSA-N 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006065 biodegradation reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009297 electrocoagulation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 229910052742 iron Inorganic materials 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
- 239000012528 membrane Substances 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000009853 pyrometallurgy Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910052950 sphalerite Inorganic materials 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
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Classifications
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- 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
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/11—Removing sulfur, phosphorus or arsenic other than by roasting
-
- 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
- C22B11/02—Obtaining noble metals by dry processes
-
- 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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/12—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions
-
- 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
- C22B30/00—Obtaining antimony, arsenic or bismuth
- C22B30/02—Obtaining antimony
-
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/22—Electrolytic production, recovery or refining of metals by electrolysis of solutions of metals not provided for in groups C25C1/02 - C25C1/20
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/06—Operating or servicing
-
- 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 method for synchronously recovering gold and value-added utilizing antimony from antimony-containing gold ores, belonging to the technical field of non-ferrous metallurgy. Adding antimony-containing gold ore into an alkaline solution to carry out alkaline leaching to obtain an alkaline leaching solution and gold-containing antimony-removed ore; recovering gold from gold-containing antimony-removed ore; electrodepositing the alkaline leaching solution to obtain gold-containing electrodeposited antimony and gold-containing anode mud; recovering gold from the gold-bearing anode mud; placing a solid sulfur source in a low-temperature heating area of a double-temperature area furnace reactor, placing gold-containing electrodeposited antimony in a high-temperature vulcanization reaction area of the double-temperature area furnace reactor, washing with inert gas to exhaust impurity gases, heating to 200-400 ℃ of the low-temperature heating area, 500-800 ℃ of the high-temperature vulcanization reaction area, releasing gaseous sulfur from the solid sulfur source in the low-temperature heating area, reacting with the gold-containing electrodeposited antimony in the high-temperature vulcanization reaction area to generate gaseous phase antimony sulfide and gold-containing residues, condensing the gaseous phase antimony sulfide, and recovering gold from the gold-containing residues. The invention realizes the value-added utilization of the metal antimony and the high-efficiency recovery of the noble metal gold.
Description
Technical Field
The invention relates to a method for synchronously recycling gold and value-added utilizing antimony from antimony-containing gold ores, belonging to the technical field of metallurgical engineering.
Background
The antimony-containing gold ore is treated by adopting the traditional roasting process, most of arsenic and antimony enter flue gas, and the arsenic and the antimony are difficult to separate; common methods for arsenic removal are: precipitation, membrane treatment, adsorption, biodegradation, ion exchange, extraction, electrocoagulation and the like, and the methods mostly need to reprocess the solution after arsenic removal, have complex process and harm to the environment to a certain extent. In the traditional vacuum distillation volatilization process, impurities such as iron, copper and silver and most of lead and sulfur are enriched in residues, and the impurity removal effect is not ideal. The traditional antimony-containing gold ore treatment process is leached to obtain the antimony-removed ore, namely, the antimony-removed ore is sent to extract gold, but a small amount of gold remains in the leaching solution, and the antimony contained in the ore is treated to obtain electrodeposited antimony and then is generally sold directly, so that the values of the antimony and the gold are greatly reduced.
At present, the gold-containing antimony sulfide ore containing more than 30 percent of antimony is generally recovered and treated by adopting blast furnace volatilization smelting, although the method is based on the fact that the antimony has better trapping capacity for gold, most of the antimony can volatilize in the form of antimony oxide powder in the blast furnace volatilization smelting process, a small amount of antimony is produced in the form of antimony matte or crude antimony, and the utilization value of the antimony is low. However, the low-grade gold-containing antimony sulfide ore with antimony content below 20% is not suitable for being processed by blast furnace volatilization smelting, mainly because of high cost and energy consumption and low recovery rate of antimony gold. When the antimony-containing gold ore is used for smelting gold, the antimony content in the antimony-containing gold ore is low, so that the antimony cannot be subjected to large-scale pyrometallurgy, and the product value is low. The electro-deposited antimony obtained by leaching electro-deposition contains gold, and the traditional volatilization process cannot effectively realize gold-antimony separation.
Disclosure of Invention
The invention provides a method for synchronously recovering gold and increasing value of antimony in an antimony-containing gold ore, aiming at the problems of recovery of gold and high value of antimony in the antimony-containing gold ore in the prior art, and provides a method for synchronously recovering gold and increasing value of antimony.
The invention utilizes the large difference of the saturated vapor pressure of antimony, antimony sulfide and gold and the volatile volatility of antimony sulfide, adopts the vulcanization volatilization process to directly vulcanize the electrodeposited antimony to generate antimony sulfide, converts the metal antimony into antimony sulfide and enriches gold, and realizes the value-added utilization of the metal antimony in the electrodeposited antimony and the high-efficiency recovery of the precious metal gold.
A method for synchronously recovering gold and value-added utilizing antimony from antimony-containing gold ore comprises the following specific steps:
(1) adding the antimony-containing gold ore into an alkaline solution for alkaline leaching to obtain an alkaline leaching solution and gold-containing antimony-removed ore; recovering gold from gold-containing antimony-removed ore;
(2) electrodepositing the alkaline leaching solution to obtain gold-containing electrodeposited antimony and gold-containing anode mud; recovering gold from the gold-bearing anode mud;
(3) placing a solid sulfur source in a low-temperature heating zone of a double-temperature zone furnace reactor, placing gold-containing electrodeposited antimony in a high-temperature vulcanization reaction zone of the double-temperature zone furnace reactor, washing with inert gas to exhaust impurity gases, heating to 200-400 ℃ of the low-temperature heating zone, 500-800 ℃ of the high-temperature vulcanization reaction zone, reacting gaseous sulfur released by the solid sulfur source in the low-temperature heating zone with the gold-containing electrodeposited antimony in the high-temperature vulcanization reaction zone to generate gaseous phase antimony sulfide and gold-containing residues, condensing the gaseous phase antimony sulfide, and recovering gold from the gold-containing residues;
the alkaline solution in the step (1) contains 20-120 g/L of sodium hydroxide and 20-120 g/L of sodium sulfide, and the alkaline leaching time is 0.1-6 h;
the cathode current density in the electrodeposition in the step (2) is 150-200A/m2；
The sulfur source in the step (3) comprises but is not limited to sublimed sulfur, chalcopyrite, chalcocite, bornite, pyrite, molybdenite, sphalerite and silversmith;
the condensation temperature is 20-250 ℃;
the antimony-containing gold ore contains 1.00-10.00 wt% of antimony, 0.10-80.00 g/t of gold, 1.00-10.00 wt% of arsenic and 1.00-30.00 wt% of sulfur;
and (4) the pressure intensity during the reaction in the step (3) is 5-80000 Pa.
The invention has the beneficial effects that:
(1) the invention carries out vulcanization treatment on the electrodeposited antimony by utilizing the fact that the saturated vapor pressure difference of antimony sulfide and gold is large and the antimony sulfide is volatile through a leaching-electrodeposition-vulcanization volatilization process to obtain gas-phase high-valued high-purity antimony sulfide, and gold is enriched into residues;
(2) according to the invention, arsenic is leached into the antimony-removed ore through leaching, so that the separation of arsenic and antimony is realized, the impurity removal of arsenic is not required, the electrodeposited antimony is directly subjected to vulcanization volatilization to obtain high-valued high-purity antimony sulfide, and the problem of high impurity content of the electrodeposited antimony is solved;
(3) according to the invention, antimony sulfide is obtained by vulcanizing volatile electro-deposited antimony, the melting point of the antimony sulfide is lower than that of antimony, and compared with metal antimony, the antimony sulfide is easier to volatilize, the volatilization temperature is lower and the energy consumption is less, the energy consumption is effectively reduced by carrying out reaction under the vacuum oxygen-free condition, and the reaction efficiency and the product quality are improved;
(4) the invention enriches gold into gold-containing antimony removal ore through alkaline leaching, enriches the gold in the alkaline leaching solution into anode mud through electrodeposition, enriches the gold in the electrodeposited antimony into volatile residues through the difference between sulfide electrodeposited antimony and saturated vapor pressure, and greatly improves the recovery rate of the gold.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments, but the scope of the present invention is not limited to the description.
Example 1: a method for synchronously recovering gold and value-added utilizing antimony from antimony-containing gold ore (see figure 1) comprises the following steps:
(1) adding 500g of antimony-containing gold ore into an alkaline solution at room temperature for alkaline leaching for 2 hours to obtain a sodium thioantimonate alkaline leaching solution and gold-containing deironite; recovering gold from gold-containing antimony-removed ore; wherein the alkaline solution contains 20g/L sodium hydroxide and 20g/L sodium sulfide aqueous solution; the antimony-containing gold ore contains 68.1g/t gold, 4.84 wt% of antimony, 4.91 wt% of arsenic and 27 wt% of sulfur;
(2) performing electrodeposition on the sodium thioantimonate alkaline leaching solution, and separating out metallic antimony from a cathode to obtain gold-containing electrodeposited antimony and gold-containing anode mud; recovering gold from the gold-bearing anode mud; wherein the current density of the electro-deposition cathode is 150A/m2；
(3) Placing a sulfur source (elemental sulfur) in a low-temperature heating zone of a double-temperature zone furnace reactor, placing gold-containing electrodeposited antimony in a high-temperature vulcanization reaction zone of the double-temperature zone furnace reactor, washing with inert gas (argon) to exhaust impurity gases, heating to the temperature of the low-temperature heating zone of 200 ℃, the temperature of the high-temperature vulcanization reaction zone of 500 ℃, releasing gaseous sulfur from the solid sulfur source (elemental sulfur) in the low-temperature heating zone to react with the gold-containing electrodeposited antimony in the high-temperature vulcanization reaction zone to generate gas-phase antimony sulfide and gold-containing residues, condensing the gas-phase antimony sulfide at the temperature of 20 ℃ to obtain high-purity antimony sulfide, and recovering gold from the gold-containing residues;
the main components of the raw materials of the antimony-containing gold ore, the electro-deposited antimony, the volatile matter (crude antimony) by the conventional heating method and the antimony sulfide in the embodiment are shown in Table 1;
TABLE 1
| Au(g/t) | Sb wt％ | As wt％ | S wt％ | |
| Antimony-containing gold ore | 68.1 | 4.84 | 4.91 | 27 |
| Electrodeposition of antimony | 9.2 | 95.2 | 0.07 | 2.19 |
| Conventional volatile product (crude antimony) | 0.58 | 97.3 | 0.06 | 1.08 |
| Sulfurized volatile product (antimony sulfide) | 0.00006 | 72.03 | 0.03 | 26.89 |
As can be seen from Table 1, the gold content in antimony sulfide is only 0.00006g/t, and the arsenic content is only 0.03 wt%; and the mass ratio of the prepared antimony sulfide accords with a theoretical value.
Example 2: a method for synchronously recovering gold and value-added utilizing antimony from antimony-containing gold ore (see figure 1) comprises the following steps:
(1) adding 500g of antimony-containing gold ore into an alkaline solution at room temperature for alkaline leaching for 2 hours to obtain a sodium thioantimonate alkaline leaching solution and gold-containing deironite; recovering gold from gold-containing antimony-removed ore; wherein the alkaline solution contains an aqueous solution of 60g/L sodium hydroxide and 60g/L sodium sulfide; the antimony-containing gold ore contains 68.1g/t gold, 4.84 wt% of antimony, 4.91 wt% of arsenic and 27 wt% of sulfur;
(2) sodium thioantimonate baseThe immersion liquid is electrodeposited, and metallic antimony is separated out from the cathode to obtain gold-containing electrodeposited antimony and gold-containing anode mud; recovering gold from the gold-bearing anode mud; wherein the current density of the electro-deposition cathode is 175A/m2；
(3) Placing a sulfur source (elemental sulfur) in a low-temperature heating area of a double-temperature area furnace reactor, placing gold-containing electrodeposited antimony in a high-temperature vulcanization reaction area of the double-temperature area furnace reactor, washing with inert gas (helium) to exhaust impurity gases, heating to the temperature of the low-temperature heating area of 300 ℃, the temperature of the high-temperature vulcanization reaction area of 650 ℃, releasing gaseous sulfur from the solid sulfur source (elemental sulfur) in the low-temperature heating area to react with the gold-containing electrodeposited antimony in the high-temperature vulcanization reaction area to generate gas-phase antimony sulfide and gold-containing residues, condensing the gas-phase antimony sulfide at the temperature of 150 ℃ to obtain high-purity antimony sulfide, and recovering gold from the gold-containing residues;
the main components of the raw materials of the antimony-containing gold ore, the electro-deposited antimony, the volatile matter (crude antimony) by the conventional heating method and the antimony sulfide in the embodiment are shown in Table 2;
TABLE 2
| Gold (g/t) | Antimony wt.% | As wt％ | S wt％ | |
| Antimony-containing gold ore | 68.1 | 4.84 | 4.91 | 27 |
| Electrodeposition of antimony | 11.3 | 96.2 | 0.06 | 1.98 |
| Conventional volatile product (crude antimony) | 0.79 | 97.9 | 0.05 | 0.87 |
| Sulfurized volatile product (antimony sulfide) | 0.00002 | 71.88 | 0.03 | 27.16 |
As can be seen from Table 2, the gold content in antimony sulfide is only 0.00002g/t, and the arsenic content is only 0.03 wt%; and the mass ratio of the prepared antimony sulfide accords with a theoretical value.
Example 3: a method for synchronously recovering gold and value-added utilizing antimony from antimony-containing gold ore (see figure 1) comprises the following steps:
(1) adding 500g of antimony-containing gold ore into an alkaline solution at room temperature for alkaline leaching for 2 hours to obtain a sodium thioantimonate alkaline leaching solution and gold-containing deironite; recovering gold from gold-containing antimony-removed ore; wherein the alkaline solution contains an aqueous solution of 120g/L sodium hydroxide and 120g/L sodium sulfide; the antimony-containing gold ore contains 68.1g/t gold, 4.84 wt% of antimony, 4.91 wt% of arsenic and 27 wt% of sulfur;
(2) performing electrodeposition on the sodium thioantimonate alkaline leaching solution, and separating out metallic antimony from a cathode to obtain gold-containing electrodeposited antimony and gold-containing anode mud; recovering gold from the gold-bearing anode mud; wherein the current density of the electro-deposition cathode is 200A/m2；
(3) Placing a sulfur source (elemental sulfur) in a low-temperature heating area of a double-temperature-area furnace reactor, placing gold-containing electrodeposited antimony in a high-temperature vulcanization reaction area of the double-temperature-area furnace reactor, washing with inert gas (helium) to exhaust impurity gases, heating to the temperature of the low-temperature heating area of 400 ℃, the temperature of the high-temperature vulcanization reaction area of 800 ℃, releasing gaseous sulfur from the solid sulfur source (elemental sulfur) in the low-temperature heating area to react with the gold-containing electrodeposited antimony in the high-temperature vulcanization reaction area to generate gas-phase antimony sulfide and gold-containing residues, condensing the gas-phase antimony sulfide at the temperature of 250 ℃ to obtain high-purity antimony sulfide, and recovering gold from the gold-containing residues;
the main components of the raw materials of the antimony-containing gold ore, the electro-deposited antimony, the volatile matter (crude antimony) by the conventional heating method and the antimony sulfide in the embodiment are shown in Table 3;
TABLE 3
| Gold (g/t) | Antimony wt.% | As wt％ | S wt％ | |
| Antimony-containing gold ore | 68.1 | 4.84 | 4.91 | 27 |
| Electrodeposition of antimony | 13.5 | 96.5 | 0.06 | 1.79 |
| Conventional volatile product (crude antimony) | 0.82 | 98.4 | 0.05 | 0.79 |
| Sulfurized volatile product (antimony sulfide) | 0.00005 | 71.86 | 0.03 | 27.66 |
As can be seen from Table 3, the gold content in antimony sulfide is only 0.00005g/t, and the arsenic content is only 0.03 wt%; and the mass ratio of the prepared antimony sulfide accords with a theoretical value.
Example 4: a method for synchronously recovering gold and value-added utilizing antimony from antimony-containing gold ore (see figure 1) comprises the following steps:
(1) adding 500g of antimony-containing gold ore into an alkaline solution at room temperature for alkaline leaching for 2 hours to obtain a sodium thioantimonate alkaline leaching solution and gold-containing deironite; recovering gold from gold-containing antimony-removed ore; wherein the alkaline solution contains an aqueous solution of 120g/L sodium hydroxide and 120g/L sodium sulfide; the antimony-containing gold ore contains 68.1g/t gold, 4.84 wt% of antimony, 4.91 wt% of arsenic and 27 wt% of sulfur;
(2) performing electrodeposition on the sodium thioantimonate alkaline leaching solution, and separating out metallic antimony from a cathode to obtain gold-containing electrodeposited antimony and gold-containing anode mud; recovering gold from the gold-bearing anode mud; wherein the current density of the electro-deposition cathode is 200A/m2；
(3) Placing a sulfur source (pyrite) in a low-temperature heating zone of a double-temperature zone furnace reactor, placing gold-containing electrodeposited antimony in a high-temperature vulcanization reaction zone of the double-temperature zone furnace reactor, washing with inert gas (helium) to exhaust impurity gases, heating to the temperature of the low-temperature heating zone of 400 ℃, the temperature of the high-temperature vulcanization reaction zone of 800 ℃, releasing gaseous sulfur from a solid sulfur source (elemental sulfur) in the low-temperature heating zone to react with the gold-containing electrodeposited antimony in the high-temperature vulcanization reaction zone to generate gas-phase antimony sulfide and gold-containing residues, condensing the gas-phase antimony sulfide at the temperature of 250 ℃ to obtain high-purity antimony sulfide, and recovering gold from the gold-containing residues;
the main components of the raw materials of the antimony-containing gold ore, the electro-deposited antimony, the volatile matter (crude antimony) by the conventional heating method and the antimony sulfide in the embodiment are shown in Table 4;
TABLE 4
| Gold (g/t) | Antimony wt.% | As wt％ | S wt％ | |
| Antimony-containing gold ore | 68.1 | 4.84 | 4.91 | 27 |
| Electrodeposition of antimony | 13.5 | 96.5 | 0.06 | 1.79 |
| Conventional volatile product (crude antimony) | 0.82 | 98.4 | 0.05 | 0.79 |
| Sulfurized volatile product (antimony sulfide) | 0.00005 | 71.47 | 0.03 | 27.22 |
As can be seen from Table 4, the gold content in antimony sulfide is only 0.00005g/t, and the arsenic content is only 0.03 wt%; and the mass ratio of the prepared antimony sulfide accords with a theoretical value.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit and scope of the present invention.
Claims (5)
1. A method for synchronously recovering gold and value-added utilizing antimony from antimony-containing gold ore is characterized by comprising the following specific steps:
(1) adding the antimony-containing gold ore into an alkaline solution for alkaline leaching to obtain an alkaline leaching solution and gold-containing antimony-removed ore; recovering gold from gold-containing antimony-removed ore;
(2) electrodepositing the alkaline leaching solution to obtain gold-containing electrodeposited antimony and gold-containing anode mud; recovering gold from the gold-bearing anode mud;
(3) placing a solid sulfur source in a low-temperature heating area of a double-temperature area furnace reactor, placing gold-containing electrodeposited antimony in a high-temperature vulcanization reaction area of the double-temperature area furnace reactor, washing with inert gas to exhaust impurity gases, heating to 200-400 ℃ of the low-temperature heating area, 500-800 ℃ of the high-temperature vulcanization reaction area, releasing gaseous sulfur from the solid sulfur source in the low-temperature heating area, reacting with the gold-containing electrodeposited antimony in the high-temperature vulcanization reaction area to generate gaseous phase antimony sulfide and gold-containing residues, condensing the gaseous phase antimony sulfide, and recovering gold from the gold-containing residues.
2. The method for synchronously recovering gold and value-added utilizing antimony in the antimony-containing gold ore according to claim 1, which is characterized in that: the alkaline solution in the step (1) contains 20-120 g/L of sodium hydroxide and 20-120 g/L of sodium sulfide, and the alkaline leaching time is 0.1-6 h.
3. The method for synchronously recovering gold and value-added utilizing antimony in the antimony-containing gold ore according to claim 1, which is characterized in that: the cathode current density in the electrodeposition step (2) is 150-200A/m2。
4. The method for synchronously recovering gold and value-added utilizing antimony in the antimony-containing gold ore according to claim 1, which is characterized in that: the sulfur source of step (3) includes, but is not limited to, sublimed sulfur, chalcopyrite, chalcocite, bornite, pyrite, molybdenite, blende, and chalcocite.
5. The method for synchronously recovering gold and value-added utilizing antimony in the antimony-containing gold ore according to claim 1, which is characterized in that: the condensation temperature is 20-250 ℃.
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