CN117019380A - Method for improving recovery rate of associated gold of copper-sulfur ore - Google Patents
Method for improving recovery rate of associated gold of copper-sulfur ore Download PDFInfo
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- CN117019380A CN117019380A CN202311008435.6A CN202311008435A CN117019380A CN 117019380 A CN117019380 A CN 117019380A CN 202311008435 A CN202311008435 A CN 202311008435A CN 117019380 A CN117019380 A CN 117019380A
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- copper
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- sulfur
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- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000011084 recovery Methods 0.000 title claims abstract description 41
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000010931 gold Substances 0.000 title claims abstract description 38
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 38
- BWFPGXWASODCHM-UHFFFAOYSA-N copper monosulfide Chemical compound [Cu]=S BWFPGXWASODCHM-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 75
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 75
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 75
- 229910052802 copper Inorganic materials 0.000 claims abstract description 75
- 239000010949 copper Substances 0.000 claims abstract description 75
- 239000004571 lime Substances 0.000 claims abstract description 75
- 239000012141 concentrate Substances 0.000 claims abstract description 68
- 239000003112 inhibitor Substances 0.000 claims abstract description 25
- 238000005188 flotation Methods 0.000 claims abstract description 23
- 239000004088 foaming agent Substances 0.000 claims abstract description 15
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 14
- 239000011593 sulfur Substances 0.000 claims abstract description 14
- 238000007667 floating Methods 0.000 claims abstract description 8
- 239000003814 drug Substances 0.000 claims description 10
- 229940079593 drug Drugs 0.000 claims description 10
- HQABUPZFAYXKJW-UHFFFAOYSA-O butylazanium Chemical compound CCCC[NH3+] HQABUPZFAYXKJW-UHFFFAOYSA-O 0.000 claims description 9
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 claims description 3
- HVBSAKJJOYLTQU-UHFFFAOYSA-M 4-aminobenzenesulfonate Chemical compound NC1=CC=C(S([O-])(=O)=O)C=C1 HVBSAKJJOYLTQU-UHFFFAOYSA-M 0.000 claims description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 2
- 235000011613 Pinus brutia Nutrition 0.000 claims description 2
- 241000018646 Pinus brutia Species 0.000 claims description 2
- 230000002401 inhibitory effect Effects 0.000 claims description 2
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 claims 1
- 239000012991 xanthate Substances 0.000 claims 1
- 239000011028 pyrite Substances 0.000 abstract description 7
- 229910052683 pyrite Inorganic materials 0.000 abstract description 7
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 abstract description 7
- 229910052952 pyrrhotite Inorganic materials 0.000 abstract description 7
- 238000005187 foaming Methods 0.000 abstract description 4
- 238000004537 pulping Methods 0.000 description 15
- 239000006260 foam Substances 0.000 description 13
- 230000002000 scavenging effect Effects 0.000 description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 239000011707 mineral Substances 0.000 description 8
- 229910052976 metal sulfide Inorganic materials 0.000 description 7
- DSCFFEYYQKSRSV-UHFFFAOYSA-N 1L-O1-methyl-muco-inositol Natural products COC1C(O)C(O)C(O)C(O)C1O DSCFFEYYQKSRSV-UHFFFAOYSA-N 0.000 description 5
- VJXUJFAZXQOXMJ-UHFFFAOYSA-N D-1-O-Methyl-muco-inositol Natural products CC12C(OC)(C)OC(C)(C)C2CC(=O)C(C23OC2C(=O)O2)(C)C1CCC3(C)C2C=1C=COC=1 VJXUJFAZXQOXMJ-UHFFFAOYSA-N 0.000 description 5
- DSCFFEYYQKSRSV-KLJZZCKASA-N D-pinitol Chemical compound CO[C@@H]1[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)[C@H]1O DSCFFEYYQKSRSV-KLJZZCKASA-N 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 4
- 229910052934 alunite Inorganic materials 0.000 description 4
- 239000010424 alunite Substances 0.000 description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
- 229910052601 baryte Inorganic materials 0.000 description 4
- 239000010428 baryte Substances 0.000 description 4
- 229910052948 bornite Inorganic materials 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 229910052947 chalcocite Inorganic materials 0.000 description 4
- 229910052951 chalcopyrite Inorganic materials 0.000 description 4
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 4
- QRJOYPHTNNOAOJ-UHFFFAOYSA-N copper gold Chemical compound [Cu].[Au] QRJOYPHTNNOAOJ-UHFFFAOYSA-N 0.000 description 4
- 229910001649 dickite Inorganic materials 0.000 description 4
- 229910052971 enargite Inorganic materials 0.000 description 4
- 239000010433 feldspar Substances 0.000 description 4
- 229910052949 galena Inorganic materials 0.000 description 4
- XCAUINMIESBTBL-UHFFFAOYSA-N lead(ii) sulfide Chemical compound [Pb]=S XCAUINMIESBTBL-UHFFFAOYSA-N 0.000 description 4
- 239000010453 quartz Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229910052950 sphalerite Inorganic materials 0.000 description 4
- 229910052600 sulfate mineral Inorganic materials 0.000 description 4
- 229910052969 tetrahedrite Inorganic materials 0.000 description 4
- KPZTWMNLAFDTGF-UHFFFAOYSA-D trialuminum;potassium;hexahydroxide;disulfate Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Al+3].[Al+3].[Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O KPZTWMNLAFDTGF-UHFFFAOYSA-D 0.000 description 4
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000002516 radical scavenger Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- YNTQKXBRXYIAHM-UHFFFAOYSA-N azanium;butanoate Chemical compound [NH4+].CCCC([O-])=O YNTQKXBRXYIAHM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000006309 butyl amino group Chemical group 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/008—Organic compounds containing oxygen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/012—Organic compounds containing sulfur
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/007—Modifying reagents for adjusting pH or conductivity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/04—Frothers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The application provides a method for improving the recovery rate of associated gold of copper-sulfur ores, which comprises the following steps: s1, grinding ore, adding lime to adjust pH value, adding a collector and a foaming agent, and performing copper roughing flotation to obtain copper rough concentrate and roughingTailings; s2, adding lime into the copper rough concentrate to adjust pH, and then addingSelecting to obtain copper concentrate; the addition amount of the lime is 0-200 g/t according to each ton of ore; the saidThe addition amount of (C) is 0-200 g/t. Wherein the saidThe method is used for replacing part of lime and taking lime together as an inhibitor to reduce the addition amount of lime, so that the alkalinity of copper rough concentrate is reduced, the recovery rate of associated gold is improved, the economic benefit of enterprises is enhanced, the upward floating of sulfur in pyrite and pyrrhotite is inhibited, copper and sulfur are separated with low alkalinity, and foaming of ores is reduced.
Description
Technical Field
The application relates to the field of nonferrous metal metallurgy, in particular to a method for improving the recovery rate of associated gold of copper-sulfur ores.
Background
At the present stage, most copper-sulfur ore is preferably selected from copper by adopting a high-alkalinity process, and according to statistics, about 1 hundred million tons of lime are consumed by mines each year, the limestone is extracted on a large scale to seriously destroy the ecological environment, and a large amount of CO is released in the lime firing process 2 The method has positive significance for reducing carbon emission, promoting the upgrading of the traditional mineral separation production technology of mines, promoting the development of green low carbon of the mines and improving the comprehensive utilization rate of resources under the conditions of 'carbon reaching peak', 'carbon neutralization'.
However, the need for high pH to inhibit adsorption of sulfur impurities is combined with the need for low alkalinity, low pH of the tailings wastewater to increase associated gold recovery. The existing high alkalinity sulfur separation process has a further disadvantage: the use of lime suppresses a large amount of associated gold by high alkalinity, the addition of lime causes the bubble to be sticky, the ore slurry is seriously entrained, the quality of concentrate is affected, the equipment and the environment are not good, and sulfuric acid or copper sulfate is often required to be added as an activating agent in the subsequent sulfur recovery stage.
Disclosure of Invention
In view of the above problems in the prior art, the present application provides a method for increasing recovery rate of associated gold from copper-sulfur ores by adding during concentration8372CN replaces part of lime,>8372CN and lime are used together as inhibitors to reduce the addition amount of lime, so that the alkalinity of copper rough concentrate is reduced, the recovery rate of associated gold is improved, the upward floating of sulfur in pyrite and pyrrhotite is inhibited, and meanwhile, low-alkalinity separation of copper and sulfur is realized, and foaming and stickiness of ore are reduced.
The specific application comprises the following steps:
in a first aspect, the application provides a method for improving recovery rate of associated gold from copper-sulfur ores, the method comprising the steps of:
s1, grinding ore, adding lime to adjust the pH value, adding a collector and a foaming agent, and performing copper roughing flotation to obtain copper rough concentrate and roughing tailings;
s2, adding lime into the copper rough concentrate to adjust pH, and then adding8372CN, carrying out concentration to obtain copper concentrate; wherein said lime and said +.>8372CN as an inhibitor; said->8372CN is used to replace lime and inhibit sulfurFloating to reduce the alkalinity of the copper rough concentrate concentration; the addition amount of the lime is 0-200 g/t according to each ton of ore; said->8372CN is added in an amount of 0-200 g/t.
Optionally, in the step S1, the grinding fineness of-0.074 mm accounts for 45-90%.
Optionally, in step S1, the fineness of grinding is-0.074 mm accounting for 60%.
Optionally, in step S1, the collector is at least one of a butylamino black drug, sulfanilate, and xanthogen.
Optionally, in step S1, the foaming agent is any one of ether alcohol or pine alcohol oil.
Optionally, in the step S1, the addition amount of the collecting agent is 5-200 g/t per ton of ore; the addition amount of the foaming agent is 0-100 g/t.
Optionally, in the step S1, the number of times of copper roughing flotation is 1-2 times; the copper rougher flotation time is 3-15 minutes in total.
Optionally, in the step S2, the addition amount of the lime is 0-100 g/t per ton of ore;
the said8372CN is added in an amount of 5-15 g/t.
Optionally, in step S2, the number of times of selection is 1-10 times; the time for each selection is 2-15 minutes.
Optionally, in steps S1 and S2, the pH is 8 to 11.
Compared with the prior art, the application has the following advantages:
the method for improving the recovery rate of associated gold of copper-sulfur ores provided by the application is characterized in that in the process of concentration, the copper-sulfur ores are added with8372CN replaces part of lime,>8372CN and lime are used together as inhibitors to reduce the addition amount of lime, so that the alkalinity of the copper rough concentrate is reduced, the inhibition effect on associated gold is reduced, and the recovery rate of associated gold of copper-sulfur ores is improved. The test results show that during the concentration process, compared to lime alone as inhibitor, the method comprises the steps of->8372CN and lime are used together as the low alkalinity combination of the inhibitor, the associated gold recovery rate of the copper concentrate can be improved by 2-15 percent, the recovery rate of copper is not affected, and the phenomenon of bubble stickiness is improved. Furthermore, the->8372CN has little pollution to the environment and is more environment-friendly.
The application provides a method for improving the recovery rate of associated gold of copper-sulfur ores,8372CN and lime are used together as inhibitors to reduce the addition of lime, so that the carefully chosen alkalinity of the copper rough concentrate is reduced, the recovery rate of associated gold is improved, meanwhile, the upward floating of sulfur in pyrite and pyrrhotite is inhibited, the low-alkalinity separation of copper and sulfur is realized, and the foaming and adhesion of ore bubbles are reduced.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 shows a schematic flow chart of a method for improving recovery rate of associated gold of copper-sulfur ores, which is provided by an embodiment of the application;
FIG. 2 shows a schematic diagram of the operation flow of a method for improving the recovery rate of associated gold of copper-sulfur ores, which is provided by the embodiment of the application;
FIG. 3 shows a schematic flow chart of ore treatment by the method for improving the recovery rate of associated gold of copper-sulfur ores according to the embodiment of the application;
fig. 4 shows a schematic flow diagram of a conventional flotation process for treating ore.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. Any product that is the same as or similar to the present application, which anyone in the light of the present application or combines the present application with other prior art features, falls within the scope of the present application based on the embodiments of the present application. And all other embodiments that may be made by those of ordinary skill in the art without undue burden and without departing from the scope of the application.
Specific experimental steps or conditions are not noted in the examples and may be performed in accordance with the operation or conditions of conventional experimental steps described in the prior art in the field. The reagents used, as well as other instruments, are conventional reagent products available commercially, without the manufacturer's knowledge. Furthermore, the drawings are merely schematic illustrations of embodiments of the application and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate.
In the description of the present application, it should be understood that the terms "first," "second," and the like are used for defining the components, and are merely for convenience in distinguishing the corresponding components, and the terms are not meant to have any special meaning unless otherwise indicated, so that the scope of the present application is not to be construed as being limited.
In addition, the technical features of the different embodiments of the present application described below may be combined with each other as long as they do not collide with each other.
Based on the prior copper-sulfur ore, the copper is preferably selected by adopting a high-alkalinity process, a large amount of lime is added as an inhibitor, so that the alkalinity is increased, the floating of sulfur is inhibited, the contradiction exists between the high alkalinity and the low alkalinity required by improving the recovery rate of associated gold and tailing wastewater, the recovery rate of the associated gold in the copper-sulfur ore is lower due to the high alkalinity, and the problems of sticky ore bubbles, serious ore slime entrainment, influence on concentrate quality and the like are caused by the large amount of lime. Specifically, during the concentration process, by adding8372CN replaces part of lime,>8372CN and lime are used together as inhibitors to reduce the addition of lime, so that the carefully chosen alkalinity of the copper rough concentrate is reduced, the inhibition effect on associated gold is reduced, and the recovery rate of associated gold of copper-sulfur ores is improved. The test results show that +.>8372CN replaces part of lime,>8372CN and lime are used together as inhibitor, the recovery rate of associated gold of copper concentrate can be improved by 2-15 percent, and the recovery rate of copper is not affected. In addition, the foaming phenomenon of the ore foam is improved after the addition amount of lime is reduced, and +.>8372CN has little pollution to the environment and is more environment-friendly. The specific embodiments are as follows:
in a first aspect, the application provides a method for increasing recovery of associated gold from copper-sulfur ores. Fig. 1 shows a schematic flow chart of a method for improving recovery rate of associated gold of copper-sulfur ores, which is provided by the embodiment of the application, as shown in fig. 1; the method comprises the following steps:
s1, grinding ore, adding lime to adjust the pH value, adding a collector and a foaming agent, and performing copper roughing flotation to obtain copper rough concentrate and roughing tailings;
when the step is specifically implemented, firstly ore is ground until the fineness of-0.074 mm accounts for 45-90%, and lime is added to adjust the pH value to 8-11. And then adding a collector and a foaming agent for size mixing, and carrying out copper roughing flotation to obtain copper rough concentrate and roughing tailings. Specifically, in the embodiment, ore is ground to the fineness of-0.074 mm accounting for 60%, the number of copper roughing flotation is 1-2, and the total time is 3-15 minutes. The collecting agent is at least one of ammonium butyrate, sulfanilate and xanthogen, and the foaming agent is any one of ether alcohol or pinitol oil. The addition amount of the collecting agent is 5-200 g/t and the addition amount of the foaming agent is 0-100 g/t according to each ton of ore. Adding a collector into the roughing tailings, pulping, and performing roughing flotation to obtain copper rough concentrate.
S2, adding lime into the copper rough concentrate to adjust pH, and then adding8372CN, concentrating to obtain copper concentrate; wherein said lime and said +.>8372CN as an inhibitor; said->8372CN is used for replacing lime, inhibiting the floating of sulfur and reducing the alkalinity of the concentration of the copper rough concentrate; the lime is calculated according to each ton of oreThe addition amount is 0-200 g/t; said->8372CN is added in an amount of 0-200 g/t.
When the step is implemented, the obtained copper rough concentrate is mixed, lime is added to adjust the pH value to 8-11, and then8372CN, the times of concentration are 1-10 times, and the time of each concentration is 2-15 minutes, thus obtaining copper concentrate. Specifically, the lime is added in an amount of 0-200 g/t->8372CN is added in an amount of 0-200 g/t. In this embodiment, the optimal addition value is: lime is added in an amount of 0-100 g/t->The addition amount of 8372CN is 5-15 g/t, and the recovery rate of associated gold is highest at the moment. />8372CN is a registered reagent, can replace lime, reduce the alkalinity of copper rough concentrate concentration, and can inhibit the floating of sulfur. The application uses->8372CN replaces part of lime,>8372CN and lime together act as inhibitors to inhibit sulfur floating. The method reduces the addition amount of lime, thereby reducing the alkalinity of the copper rough concentrate, being beneficial to improving the recovery rate of associated gold and not affecting the recovery of copper.
In order that those skilled in the art will more clearly understand the present application, a method for increasing recovery of copper-sulfur mine associated gold according to the present application will now be described in detail by way of the following examples.
Fig. 2 shows a schematic operation flow chart of the method for improving the recovery rate of associated gold of copper-sulfur ores, and the following examples refer to the flow chart for roughing flotation and concentration operation of copper-sulfur ores.
Example 1
The copper-bearing mineral of the Fujian gold copper ore is 0.78 percent, the accompanying copper content of the ore body is Jin Pinwei 0.11.11 g/t, the main copper-bearing mineral is chalcocite/copper blue, enargite, chalcopyrite, bornite, hexagonal tetrahedrite accounting for 0.88 percent of the total mass of the material, the content of pyrite and pyrrhotite accounting for 9.04 percent of the total mass of the material, and other metal sulfides are sphalerite, galena and the like, and the content of the other metal sulfides is not high. The sulfate mineral mainly comprises alunite and barite, and the silicate gangue has high content, and mainly comprises quartz, dickite, feldspar, etc.
FIG. 3 is a schematic flow chart of the method for improving the recovery rate of associated gold of copper-sulfur ore according to the embodiment 1 of the application, wherein the low alkalinity inhibitor is prepared from lime and8372 CN. As shown in fig. 3, ore is ground to-0.074 mm 60%, and lime is added to adjust the pH to 11; adding 20g/t of collector butylammonium black drug and 5g/t of foaming agent pinitol oil, pulping for 2min, and then performing roughing I flotation for 4min to obtain copper rough concentrate I and roughing I tailings; adding 10g/t of a collector butylammonium black drug into the roughing I tailings, pulping for 2min, performing roughing II flotation for 3min, and scavenging the roughing tailings for 4min to obtain scavenging foam and final tailings; the inhibitor lime is added for 100g/t after the copper rough concentrate I and the copper rough concentrate II are combined, and the inhibitor lime is added for 100g/t>8372CN 15g/t, pulping for 3min, concentrating for 6min to obtain concentrate I underflow and concentrate I foam, adding lime 50g/t into the concentrate I foam, pulping for 3min to obtain concentrate II, concentrating for 5min to obtain concentrate II, and returning the concentrate II underflow to concentrate I for re-concentration; the underflow from beneficiation I and the froth from scavenger I are combined and returned to rougher II for recleaning. Results attachmentTable 1 shows the results.
TABLE 1
The flow of ore treatment using conventional high alkalinity flotation process is shown in fig. 4, the inhibitors are all lime and the test results are shown in table 1 for comparison with the present application. Compared with the conventional high alkalinity floatation process for treating ore, the method is used for8372CN replaces part of lime,>8372CN and lime are used together as the low alkalinity combination of the inhibitor, the copper recovery rate is basically equal, the gold recovery rate is improved to 40.51 percent, and the improvement is 10.45 percent.
Example 2
The copper-bearing mineral of the Fujian gold copper ore is 0.39 percent, the accompanying copper content of the ore body is Jin Pinwei 0.13.13 g/t, the main copper-bearing mineral is chalcocite/copper blue, enargite, chalcopyrite, bornite, hexagonal tetrahedrite accounting for 0.88 percent of the total mass of the material, the content of pyrite and pyrrhotite accounting for 9.04 percent of the total mass of the material, and other metal sulfides are sphalerite, galena and the like, and the content of the other metal sulfides is not high. The sulfate mineral mainly comprises alunite and barite, and the silicate gangue has high content, and mainly comprises quartz, dickite, feldspar, etc.
FIG. 3 is a schematic flow chart of the method for improving the recovery rate of associated gold of copper-sulfur ore, which is provided in the embodiment 2 of the application, wherein as shown in FIG. 3, lime is added to adjust the pH value to 11 after ore grinding to-0.074 mm 60%; adding 20g/t of collector butylammonium black drug and 5g/t of foaming agent pinitol oil, pulping for 2min, and then performing roughing I flotation for 4min to obtain copper rough concentrate I and roughing I tailings; adding rougher I tailings into the water to catchCollecting agent of butyl ammonium black drug 10g/t, mixing pulp for 2min, carrying out roughing II flotation for 3min, scavenging roughing tailings, and obtaining scavenging foam and final tailings after scavenging for 4 min; mixing the copper rough concentrate I and the copper rough concentrate II, adding inhibitor lime 100g/t,8372 15g/t, pulping for 3min, carrying out concentration for 6min to obtain a concentrate I underflow and a concentrate I foam, adding lime into the concentrate I foam for 50g/t, pulping for 3min for concentration II, carrying out concentration II for 5min to obtain a concentrate II underflow, and returning the concentrate II underflow to the concentration I for recleaning; the underflow from beneficiation I and the froth from scavenger I are combined and returned to rougher II for recleaning. The results are shown in Table 2.
TABLE 2
The flow of ore treatment using conventional high alkalinity flotation process is shown in fig. 4, the inhibitors are all lime and the test results are shown in table 2 for comparison with the present application. Compared with the conventional high alkalinity floatation process for treating ore, the method is used for8372CN replaces part of lime,>8372CN and lime are used together as the low alkalinity combination of the inhibitor, the copper recovery rate is basically equal, the gold recovery rate is improved to 44.18 percent, and the improvement is 8.07 percent.
Example 3
The copper-bearing mineral of the Fujian gold copper ore is 0.68 percent, the accompanying copper content is Jin Pinwei 0.18.18 g/t, the main copper-bearing mineral is chalcocite/copper blue, enargite, chalcopyrite, bornite, hexagonal tetrahedrite accounting for 0.93 percent of the total mass of the material, the content of pyrite and pyrrhotite accounting for 9.23 percent of the total mass of the material, and other metal sulfides are sphalerite, galena and the like, and the content of the other metal sulfides is not high. The sulfate mineral mainly comprises alunite and barite, and the silicate gangue has high content, and mainly comprises quartz, dickite, feldspar, etc.
FIG. 2 is a schematic diagram showing the operation flow of the method for improving the recovery rate of associated gold in copper-sulfur ores, which is provided in embodiment 3 of the application, wherein the low-alkalinity inhibitor consists of lime and8372 CN. As shown in fig. 2, ore is ground to-0.074 mm 60%, and lime is added to adjust the pH to 11; adding a collector butylammonium black drug 30g/t and a foaming agent pinitol oil 7g/t for size mixing for 2min, and then performing roughing I flotation for 4min to obtain copper rough concentrate I and roughing I tailings; adding 20g/t of a collector butylammonium black drug into the roughing I tailings, pulping for 2min, performing roughing II flotation for 3min, and scavenging the roughing tailings for 4min to obtain scavenging foam and final tailings; mixing the copper rough concentrate I and the copper rough concentrate II, adding inhibitor lime 100g/t,8372CN 50g/t, pulping for 3min, concentrating for 6min to obtain concentrate I underflow and concentrate I foam, adding lime 50g/t into the concentrate I foam, pulping for 3min to obtain concentrate II, concentrating for 5min to obtain concentrate II, and returning the concentrate II underflow to concentrate I for re-concentration; the results have a similar trend to those of examples 1 and 2 and are not reproduced here.
Example 4
Fujian gold copper ore contains copper 0.58%, associated Jin Pinwei 0.21.21 g/t, main copper-bearing minerals are chalcocite/copper blue, enargite, chalcopyrite, bornite, hexagonal tetrahedrite accounting for 0.96% of the total amount of substances, pyrite and pyrrhotite accounting for 9.42% of the total amount of substances, and other metal sulfides are sphalerite, galena and the like, and the content is not high. The sulfate mineral mainly comprises alunite and barite, and the silicate gangue has high content, and mainly comprises quartz, dickite, feldspar, etc.
FIG. 2 is a schematic diagram showing the operation flow of the method for improving the recovery rate of associated gold in copper-sulfur ores, which is low in embodiment 4 of the applicationThe alkalinity inhibitor is prepared from lime and8372 CN. As shown in fig. 2, ore is ground to-0.074 mm 60%, and lime is added to adjust the pH to 9; adding 20g/t of collector butylammonium black drug and 4g/t of foaming agent pinitol oil, pulping for 2min, and then performing roughing I flotation for 4min to obtain copper rough concentrate I and roughing I tailings; adding 20g/t of a collector butylammonium black drug into the roughing I tailings, pulping for 2min, performing roughing II flotation for 3min, and scavenging the roughing tailings for 4min to obtain scavenging foam and final tailings; mixing the copper rough concentrate I and the copper rough concentrate II, adding inhibitor lime 100g/t,8372CN 50g/t, pulping for 3min, concentrating for 6min to obtain concentrate I underflow and concentrate I foam, adding lime 40g/t into the concentrate I foam, pulping for 3min to obtain concentrate II, concentrating for 5min to obtain concentrate II, and returning the concentrate II underflow to concentrate I for re-concentration; the results have a similar trend to those of examples 1 and 2 and are not reproduced here.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, one skilled in the art can combine and combine the different embodiments or examples described in this specification.
For the purposes of simplicity of explanation, the methodologies are shown as a series of acts, but one of ordinary skill in the art will recognize that the present application is not limited by the order of acts described, as some acts may, in accordance with the present application, occur in other orders and concurrently. Further, those skilled in the art will recognize that the embodiments described in the specification are all of the preferred embodiments, and that the acts and components referred to are not necessarily required by the present application.
The above describes in detail a method for improving recovery rate of associated gold in copper-sulfur ores, and specific examples are applied to illustrate principles and embodiments of the present application, and the above examples are only for helping to understand the method and core ideas of the present application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present application, the present description should not be construed as limiting the present application in view of the above.
Claims (10)
1. A method for improving recovery rate of associated gold of copper-sulfur ores, which is characterized by comprising the following steps:
s1, grinding ore, adding lime to adjust the pH value, adding a collector and a foaming agent, and performing copper roughing flotation to obtain copper rough concentrate and roughing tailings;
s2, adding lime into the copper rough concentrate to adjust pH, and then adding8372CN, carrying out concentration to obtain copper concentrate; wherein said lime and said +.>8372CN as an inhibitor; said->8372CN is used for replacing lime, inhibiting the floating of sulfur and reducing the alkalinity of the concentration of the copper rough concentrate; the addition amount of the lime is 0-200 g/t according to each ton of ore; said->8372CN is added in an amount of 0-200 g/t.
2. The method according to claim 1, wherein in the step S1, the fineness of grinding is-0.074 mm accounting for 45-90%.
3. The method according to claim 2, wherein in step S1, the fineness of grinding is-0.074 mm accounting for 60%.
4. The method of claim 1, wherein in step S1, the collector is at least one of a butylammonium black drug, sulfanilate, and xanthate.
5. The method according to claim 1, wherein in step S1, the foaming agent is any one of ether alcohol or pine alcohol oil.
6. The method according to claim 1, wherein in step S1, the collector is added in an amount of 5 to 200g/t per ton of ore; the addition amount of the foaming agent is 0-100 g/t.
7. The method according to claim 1, wherein in step S1, the number of rougher flotation of copper is 1-2; the copper rougher flotation time is 3-15 minutes in total.
8. The method according to claim 1, characterized in that in step S2, the lime is added in an amount of 0-100 g/t per ton of ore; the said8372CN is added in an amount of 5-15 g/t.
9. The method according to claim 1, wherein in step S2, the number of beneficiations is 1-10; the time for each selection is 2-15 minutes.
10. The method according to claim 1, wherein in steps S1 and S2, the pH is 8 to 11.
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