CN114015864A - Method for deep separation and copper enrichment of high-silicon copper oxide ore - Google Patents
Method for deep separation and copper enrichment of high-silicon copper oxide ore Download PDFInfo
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- CN114015864A CN114015864A CN202111303786.0A CN202111303786A CN114015864A CN 114015864 A CN114015864 A CN 114015864A CN 202111303786 A CN202111303786 A CN 202111303786A CN 114015864 A CN114015864 A CN 114015864A
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- oxide ore
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- 239000010949 copper Substances 0.000 title claims abstract description 83
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 78
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 77
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 239000005751 Copper oxide Substances 0.000 title claims abstract description 65
- 229910000431 copper oxide Inorganic materials 0.000 title claims abstract description 65
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 61
- 239000010703 silicon Substances 0.000 title claims abstract description 61
- 238000000926 separation method Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 43
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 33
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 33
- 241000692870 Inachis io Species 0.000 claims abstract description 32
- 239000004575 stone Substances 0.000 claims abstract description 32
- 238000005188 flotation Methods 0.000 claims abstract description 23
- 239000000203 mixture Substances 0.000 claims abstract description 22
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 21
- 239000012141 concentrate Substances 0.000 claims abstract description 20
- 238000001035 drying Methods 0.000 claims abstract description 19
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 238000005728 strengthening Methods 0.000 claims abstract description 13
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 12
- 239000010453 quartz Substances 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims description 41
- 238000000227 grinding Methods 0.000 claims description 21
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 20
- 239000011707 mineral Substances 0.000 claims description 20
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 239000004088 foaming agent Substances 0.000 claims description 10
- 229910052952 pyrrhotite Inorganic materials 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 238000007725 thermal activation Methods 0.000 claims description 9
- 238000001238 wet grinding Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 238000011084 recovery Methods 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 7
- 229910052717 sulfur Inorganic materials 0.000 claims description 7
- 239000011593 sulfur Substances 0.000 claims description 7
- 239000000470 constituent Substances 0.000 claims description 6
- 238000009837 dry grinding Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- WVYWICLMDOOCFB-UHFFFAOYSA-N 4-methyl-2-pentanol Chemical compound CC(C)CC(C)O WVYWICLMDOOCFB-UHFFFAOYSA-N 0.000 claims description 5
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical compound CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 5
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 claims description 5
- QWENMOXLTHDKDL-UHFFFAOYSA-N pentoxymethanedithioic acid Chemical compound CCCCCOC(S)=S QWENMOXLTHDKDL-UHFFFAOYSA-N 0.000 claims description 5
- 239000010665 pine oil Substances 0.000 claims description 5
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims description 4
- 229910052683 pyrite Inorganic materials 0.000 claims description 4
- 239000011028 pyrite Substances 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 8
- 238000005979 thermal decomposition reaction Methods 0.000 abstract description 5
- 238000003723 Smelting Methods 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 abstract 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 16
- 230000008569 process Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 241000907663 Siproeta stelenes Species 0.000 description 2
- WUOACPNHFRMFPN-UHFFFAOYSA-N alpha-terpineol Chemical group CC1=CCC(C(C)(C)O)CC1 WUOACPNHFRMFPN-UHFFFAOYSA-N 0.000 description 2
- YNTQKXBRXYIAHM-UHFFFAOYSA-N azanium;butanoate Chemical compound [NH4+].CCCC([O-])=O YNTQKXBRXYIAHM-UHFFFAOYSA-N 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229910000365 copper sulfate Inorganic materials 0.000 description 2
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- SQIFACVGCPWBQZ-UHFFFAOYSA-N delta-terpineol Natural products CC(C)(O)C1CCC(=C)CC1 SQIFACVGCPWBQZ-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052595 hematite Inorganic materials 0.000 description 2
- 239000011019 hematite Substances 0.000 description 2
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229940116411 terpineol Drugs 0.000 description 2
- YCVPRTHEGLPYPB-VOTSOKGWSA-N trans-pinosylvin Chemical compound OC1=CC(O)=CC(\C=C\C=2C=CC=CC=2)=C1 YCVPRTHEGLPYPB-VOTSOKGWSA-N 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 241000284466 Antarctothoa delta Species 0.000 description 1
- 229910021532 Calcite Inorganic materials 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052951 chalcopyrite Inorganic materials 0.000 description 1
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 1
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 description 1
- ZZBBCSFCMKWYQR-UHFFFAOYSA-N copper;dioxido(oxo)silane Chemical compound [Cu+2].[O-][Si]([O-])=O ZZBBCSFCMKWYQR-UHFFFAOYSA-N 0.000 description 1
- LBJNMUFDOHXDFG-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu].[Cu] LBJNMUFDOHXDFG-UHFFFAOYSA-N 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- YCVPRTHEGLPYPB-UHFFFAOYSA-N pinosylvine Natural products OC1=CC(O)=CC(C=CC=2C=CC=CC=2)=C1 YCVPRTHEGLPYPB-UHFFFAOYSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000012991 xanthate Substances 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Images
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
- C22B1/00—Preliminary treatment of ores or scrap
-
- 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
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G3/00—Compounds of copper
- C01G3/12—Sulfides
-
- 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
- C22B15/00—Obtaining copper
- C22B15/0002—Preliminary treatment
- C22B15/0004—Preliminary treatment without modification of the copper constituent
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a method for deeply separating and enriching copper from high-silicon copper oxide ore, which sequentially comprises the following steps: 1) preparing powder; 2) pre-drying; 3) mixing materials: uniformly mixing the dried powder with a strengthening decomposer to prepare a mixture; 4) separating elements; 5) separating components; 6) and (3) enriching components: carrying out flotation on the obtained ore pulp to obtain copper sulfide concentrate and quartz tailings; the invention realizes the transformation of valuable metal copper from extremely difficult-to-select combined copper oxide to extremely easy-to-select copper sulfide, and expands the development and utilization range of copper oxide resources; the addition of the strengthening decomposer increases the thermal decomposition driving force of the peacock stone, so that the copper element in the peacock stone crystal is separated in the form of copper sulfide, and the silicon element is recombined into silicon dioxide, thereby realizing the separation of the copper element; the copper content of the obtained copper sulfide concentrate is more than 50 percent and is far higher than the theoretical copper content of the peacock stone, and the copper sulfide concentrate can be directly used as a one-step copper smelting raw material.
Description
Technical Field
The invention relates to the field of mineral processing engineering, in particular to a method for deeply separating and enriching copper in high-silicon copper oxide ore.
Background
Copper is widely used in the fields of electricity, light industry, national defense industry and the like, and is second only to aluminum in the consumption of nonferrous metal materials in China. The raw material for extracting copper is mainly copper sulfide ore, and the copper is usually produced by a flotation-pyrometallurgy-electrolysis combined process. With the continuous development of copper sulfide ore resources, a large amount of resources are deficient, the supply of copper consumption markets is insufficient, and people begin to look to the development of copper oxide ores. Common minerals in the copper oxide ore are malachite, peacock stone, cuprite, chalcopyrite and the like. Currently, a great deal of copper oxide ore mainly containing malachite is produced industrially, but high-silicon copper oxide ore mainly containing peacock stone can only be stockpiled as waste tailings.
The content of copper in the peacock stone is about 35 percent, which is an important copper oxide mineral, but the effective utilization is difficult until now, and the main reasons comprise: 1) the sulfide-xanthate flotation method is a main method for sorting copper oxide ores, but the peacock stone is difficult to float, because the composition and the production state of the peacock stone are unstable, the peacock stone usually presents the characteristics of colloidal minerals, the surface of the peacock stone has strong hydrophilicity, and a collecting agent adsorption film is difficult to firmly attach to the surface of the minerals; 2) by adopting wet processing, when copper in the peacock stone is dissolved out, silicon dioxide combined with the peacock stone is dissolved out in the form of silicic acid, so that the load of the subsequent extraction and electrodeposition processes is increased, the consumption of an extracting agent is increased, and the quality of cathode copper is deteriorated; 3) by adopting pyrometallurgical treatment, copper is produced in the form of copper matte, but the problems of poor product quality, high energy consumption, sulfur dioxide flue gas pollution and the like exist.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for deeply separating and enriching copper in high-silicon copper oxide ores, which can effectively utilize the high-silicon copper oxide ores.
In order to solve the technical problems, the technical scheme of the invention is as follows: a method for deeply separating and enriching copper from high-silicon copper oxide ore sequentially comprises the following steps:
1) preparation of powder
Crushing and grinding the high-silicon copper oxide ore raw material to a material with the particle size of-55 to-35 mu m;
2) predrying
Pre-drying the obtained material at the drying temperature of 50-150 ℃ for 30-90 min to obtain powder;
3) mixing material
Uniformly mixing the pre-dried powder with a strengthening decomposer to prepare a mixture;
4) separation of elements
Carrying out thermal activation treatment on the mixture at 700-1000 ℃ for 30-120 min to separate elements copper and silicon from the crystalline of the peacock stone in the forms of copper sulfide and silicon dioxide respectively, and taking out after naturally cooling to 8-32 ℃;
the specific reaction equation is as follows:
2CuSiO3(H2O)2＝2CuO+2SiO2+4H2O (1)
2CuSiO3(H2O)2+2S(l)＝Cu2S+2SiO2+4H2O+SO2 (2)
2CuSiO3(H2O)2+S2(g)＝Cu2S+2SiO2+4H2O+SO2 (3)
2CuSiO3(H2O)2+3/4FeS2＝Cu2S+2SiO2+1/4Fe3O4+4H2O+1/2SO2 (4)
5) separation of components
Carrying out wet grinding on the cooled material, wherein the concentration of ore pulp is 60-75%, and obtaining ore pulp containing mineral particles with the particle size of-15 to-25 mu m;
6) enrichment of constituent elements
And carrying out flotation on the obtained ore pulp to obtain copper sulfide concentrate and quartz tailings.
According to a preferable technical scheme, the copper content of the high-silicon copper oxide ore in the high-silicon copper oxide ore raw material is 2-15%, and the copper content of the peacock stone is more than 60%.
As a preferable technical scheme, the mass percentage of the material with the particle size of-45 mu m in the step 1) in the whole material is more than 75%.
Preferably, the ore grinding mode in the step 1) is dry grinding, and the ore grinding medium is one of a steel bar, ceramic or steel ball.
As a preferable technical scheme, the mass content of free water in the powder in the step 2) is less than 10 percent.
As a preferable technical scheme, in the step 3), the strengthening decomposer is one or more of pyrrhotite, pyrite and sulfur, the particle size of the strengthening decomposer is-150-74 mu m, the adding amount of the strengthening decomposer is 2-15% of the mass of the high-silicon copper oxide ore, and the thermal decomposition driving force of the added peacock stone is obviously increased.
As a preferable technical scheme, the mass ratio of mineral particles with the particle size of-15 to-25 mu m in the ore pulp obtained in the step 5) is more than 60 percent.
According to the preferable technical scheme, in the step 6), the flotation pH range is 6-10, the collecting agent is one or more of ethyl xanthate, butyl xanthate, amyl xanthate and ammonium butyrate nigricans, the using amount is 60-200 g/t, the foaming agent is one or two of pine oil and MIBC, and the using amount is 30-60 g/t.
As a further preference, the copper sulfide concentrate obtained by flotation in step 6) contains more than 50% of copper and the copper recovery rate is more than 75%.
Due to the adoption of the technical scheme, the method for deeply separating and enriching the copper from the high-silicon copper oxide ore sequentially comprises the following steps: 1) preparing powder: crushing and grinding the high-silicon copper oxide ore raw material to a material with the particle size of-55 to-35 mu m; 2) pre-drying: pre-drying the obtained material at the drying temperature of 50-150 ℃ for 30-90 min to obtain powder; 3) mixing materials: uniformly mixing the pre-dried powder with a strengthening decomposer to prepare a mixture; 4) element separation: carrying out thermal activation treatment on the mixture at 700-1000 ℃ for 30-120 min to separate elements copper and silicon from the crystalline of the peacock stone in the forms of copper sulfide and silicon dioxide respectively, and taking out after naturally cooling to 8-32 ℃; 5) component separation: carrying out wet grinding on the cooled material, wherein the concentration of ore pulp is 60-75%, and obtaining ore pulp containing mineral particles with the particle size of-15 to-25 mu m; 6) and (3) enriching components: carrying out flotation on the obtained ore pulp to obtain copper sulfide concentrate and quartz tailings; by adopting a new method of element separation, component separation and component selective enrichment, the conversion of valuable metal copper from extremely difficult-to-select combined copper oxide to extremely easy-to-select copper sulfide is realized, and the development and utilization range of copper oxide resources is expanded; the addition of the strengthening decomposer increases the thermal decomposition driving force of the peacock stone, so that the copper element in the peacock stone crystal is separated in the form of copper sulfide, and the silicon element is recombined into silicon dioxide, thereby realizing the separation of the copper element; the copper content of the obtained copper sulfide concentrate is more than 50 percent and is far higher than the theoretical copper content of the peacock stone, and the copper sulfide concentrate can be directly used as a one-step copper smelting raw material.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the present invention will be further explained with reference to the accompanying drawings.
FIG. 1 is a.DELTA.G of the thermal decomposition and enhanced decomposition of the peacock stone of the present inventionθ-a T-relationship graph;
FIG. 2 is a process flow diagram of the present invention.
Detailed Description
A method for deeply separating and enriching copper from high-silicon copper oxide ore sequentially comprises the following steps:
1) preparation of powder
Crushing and grinding the high-silicon copper oxide ore raw material to a material with the particle size of-55 to-35 mu m;
2) predrying
Pre-drying the obtained material at the drying temperature of 50-150 ℃ for 30-90 min to obtain powder;
3) mixing material
Uniformly mixing the pre-dried powder with a strengthening decomposer to prepare a mixture;
4) separation of elements
Carrying out thermal activation treatment on the mixture at 700-1000 ℃ for 30-120 min to separate elements copper and silicon from the crystalline of the peacock stone in the forms of copper sulfide and silicon dioxide respectively, and naturally cooling to 8-32 ℃ and taking out;
the specific reaction equation is as follows:
2CuSiO3(H2O)2＝2CuO+2SiO2+4H2O (1)
2CuSiO3(H2O)2+2S(l)＝Cu2S+2SiO2+4H2O+SO2 (2)
2CuSiO3(H2O)2+S2(g)＝Cu2S+2SiO2+4H2O+SO2 (3)
2CuSiO3(H2O)2+3/4FeS2＝Cu2S+2SiO2+1/4Fe3O4+4H2O+1/2SO2 (4)
5) separation of components
Carrying out wet grinding on the cooled material, wherein the concentration of ore pulp is 60-75%, and obtaining ore pulp containing mineral particles with the particle size of-15 to-25 mu m;
6) enrichment of constituent elements
And carrying out flotation on the obtained ore pulp to obtain copper sulfide concentrate and quartz tailings.
The copper content of the high-silicon copper oxide ore in the high-silicon copper oxide ore raw material is 2-15%, and the copper content of the peacock stone is more than 60%.
In the step 1), the mass percentage of the material with the particle size of-45 mu m in the whole material is more than 75%.
The ore grinding mode in the step 1) is dry grinding, and the ore grinding medium is one of a steel bar, ceramic or steel ball.
The mass content of free water in the powder in the step 2) is less than 10 percent.
The enhanced decomposer in the step 3) is one or more of pyrrhotite, pyrite and sulfur, the granularity of the enhanced decomposer is-150-74 mu m, the addition amount of the enhanced decomposer is 2-15% of the mass of the high-silicon copper oxide ore, and the thermal decomposition driving force of the added peacock stones is obviously increased.
The mass ratio of mineral particles with the particle size of-15 to-25 mu m obtained in the step 5) is more than 60 percent.
In the step 6), the flotation pH range is 6-10, the collecting agent is one or more of ethyl xanthate, butyl xanthate, amyl xanthate and ammonium-butyl-black, the using amount is 60-200 g/t, and the foaming agent is one or two of pine oil and MIBC, and the using amount is 30-60 g/t.
The copper content of the copper sulfide concentrate obtained by flotation in the step 6) is more than 50%, and the copper recovery rate is more than 75%.
Example 1
The processing object is as follows: high-silicon copper oxide ore after pre-enrichment of copper tailings
The high-silicon copper oxide ore after the pre-enrichment of copper tailings comprises the following main chemical components in percentage by mass: cu4.52 percent and SiO232.56 percent, Fe 12.43 percent and CaO10.25 percent, and the main minerals comprise peacock stone, calcite, quartz, hematite and the like. The chemical phases (mass percent) of the copper are as follows: copper sulfate 0.96%, free copper oxide 7.2%, combined copper oxide 87.83%, and copper sulfide 4.01%.
After the high-silicon copper oxide ore is subjected to dry rod grinding treatment, a sample with the diameter of-45 mu m accounting for 78.65 percent is obtained. And heating and drying the ground sample at 125 ℃ for 45min to obtain pre-dried powder with the free water content of 8.5%. Uniformly mixing pyrrhotite with the granularity of-100 mu m with the pre-dried powder, wherein the adding amount of the pyrrhotite is 8.5 percent of the mass of the high-silicon copper oxide ore. And (3) carrying out thermal activation treatment on the mixture at 900 ℃ for 60min, naturally cooling to room temperature, and taking out. The obtained material is subjected to wet grinding, the concentration of the ore pulp is 65 percent, and the obtained particle size fraction of 20 mu m is 78 percent. The pH value is controlled to be 8.5 in the flotation process, the collecting agent is butyl xanthate, the using amount is 160g/t, the foaming agent is terpineol, the using amount is 40g/t, and finally copper concentrate containing 51.5% of copper and having the recovery rate of 78.2% is obtained.
Example 2
The processing object is as follows: high-silicon copper oxide ore after recleaning of hydrous copper silicate tailings
Aqueous copper silicic acidThe high-silicon copper oxide ore after the salt tailings are re-sorted comprises the following main chemical components in percentage by mass: cu 12.80%, CaO 6.89%, SiO2 28.77％，Fe 14.32％、Al2O34.5 percent of the main minerals are the pinosylvine, the dolomite, the hematite and the limonite, the quartz and the like. The chemical phases (mass percent) of the copper are as follows: 1.23 percent of copper sulfate, 6.44 percent of free copper oxide, 90.54 percent of combined copper oxide and 1.79 percent of copper sulfide.
After the high-silicon copper oxide ore is subjected to dry ceramic grinding treatment, a sample with the thickness of-45 mu m accounting for 85% is obtained. And heating and drying the ground sample at the drying temperature of 130 ℃ for 70min to obtain pre-dried powder with the free water content of 7.8%. The method comprises the steps of preparing a composite decomposer from pyrrhotite and sulfur according to the mass ratio of 1:1, wherein the granularity of the pyrrhotite is-100 mu m, and then uniformly mixing the pyrrhotite and pre-dried powder, wherein the addition amount of the composite decomposer is 9.6% of the mass of the high-silicon copper oxide ore. And (3) carrying out thermal activation treatment on the mixture at 950 ℃ for 80min, naturally cooling to room temperature, and taking out. The obtained material is subjected to wet grinding, the concentration of the ore pulp is 72 percent, and the grain size of-20 mu m accounting for 84 percent is obtained. The pH value is controlled to be 9.0 in the flotation process, the collecting agent is amyl xanthate, the using amount is 150g/t, the foaming agent is terpineol, the using amount is 50g/t, and finally copper concentrate containing 58.6% of copper and having the recovery rate of 83.5% is obtained.
Example 3
1) Preparation of powder
Crushing and grinding the high-silicon copper oxide ore raw material to a material with the particle size of minus 55 mu m;
2) predrying
Pre-drying the obtained material at the drying temperature of 50-150 ℃ for 30-90 min to obtain powder;
3) mixing material
Uniformly mixing the pre-dried powder with a strengthening decomposer to prepare a mixture;
4) separation of elements
Carrying out thermal activation treatment on the mixture at 700-1000 ℃ for 30-120 min to separate elements copper and silicon from the crystalline of the peacock stone in the forms of copper sulfide and silicon dioxide respectively, and naturally cooling to 8 ℃ and taking out;
5) separation of components
Carrying out wet grinding on the cooled material, wherein the concentration of ore pulp is 60-75%, and obtaining ore pulp containing mineral particles with the particle size of-15 mu m;
6) enrichment of constituent elements
And carrying out flotation on the obtained ore pulp to obtain copper sulfide concentrate and quartz tailings.
The copper content of the high-silicon copper oxide ore in the high-silicon copper oxide ore raw material is 2-15%, and the copper content of the peacock stone is more than 60%.
In the step 1), the mass percentage of the material with the particle size of-55 mu m in the whole material is more than 75%.
The ore grinding mode in the step 1) is dry grinding, and the ore grinding medium is a steel bar.
The mass content of free water in the powder in the step 2) is less than 10 percent.
The intensified decomposer in the step 3) is one or more of pyrrhotite, pyrite and sulfur, the granularity of the intensified decomposer is-150-74 mu m, and the adding amount of the intensified decomposer is 2-15% of the mass of the high-silicon copper oxide ore.
The mass ratio of mineral particles with the particle size of-15 mu m obtained in the step 5) is more than 60%.
In the step 6), the pH range of flotation is 6-10, the collecting agent is a mixture of ethyl xanthate and ammonium butyrate nigride, the using amount of the collecting agent is 60-200 g/t, and the foaming agent is pine oil, and the using amount of the foaming agent is 30-60 g/t.
The copper content of the copper sulfide concentrate obtained by flotation in the step 6) is more than 50%, and the copper recovery rate is more than 75%.
Example 4
1) Preparation of powder
Crushing and grinding the high-silicon copper oxide ore raw material to a material with the particle size of minus 45 mu m;
2) predrying
Pre-drying the obtained material at the drying temperature of 50-150 ℃ for 30-90 min to obtain powder;
3) mixing material
Uniformly mixing the pre-dried powder with a strengthening decomposer to prepare a mixture;
4) separation of elements
Carrying out thermal activation treatment on the mixture at 700-1000 ℃ for 30-120 min to separate elements copper and silicon from the crystalline of the peacock stone in the forms of copper sulfide and silicon dioxide respectively, and naturally cooling to 22 ℃ and taking out;
5) separation of components
Carrying out wet grinding on the cooled material, wherein the concentration of ore pulp is 60-75%, and obtaining ore pulp containing mineral particles with the particle size of-20 mu m;
6) enrichment of constituent elements
And carrying out flotation on the obtained ore pulp to obtain copper sulfide concentrate and quartz tailings.
The copper content of the high-silicon copper oxide ore in the high-silicon copper oxide ore raw material is 2-15%, and the copper content of the peacock stone is more than 60%.
In the step 1), the mass percentage of the material with the particle size of-45 mu m in the whole material is more than 75%.
The ore grinding mode in the step 1) is dry grinding, and the ore grinding medium is ceramic.
The mass content of free water in the powder in the step 2) is less than 10 percent.
In the step 3), the intensified decomposer is sulfur, the granularity of the intensified decomposer is-150-74 mu m, and the adding amount of the intensified decomposer is 2-15% of the mass of the high-silicon copper oxide ore.
The mass ratio of mineral particles with the particle size of-20 mu m obtained in the step 5) is more than 60%.
In the step 6), the flotation pH range is 6-10, the collecting agent is ethyl xanthate, the using amount is 60-200 g/t, the foaming agent is MIBC, and the using amount is 30-60 g/t.
The copper content of the copper sulfide concentrate obtained by flotation in the step 6) is more than 50%, and the copper recovery rate is more than 75%.
Example 5
1) Preparation of powder
Crushing and grinding the high-silicon copper oxide ore raw material to a material with the particle size of minus 35 mu m;
2) predrying
Pre-drying the obtained material at the drying temperature of 50-150 ℃ for 30-90 min to obtain powder;
3) mixing material
Uniformly mixing the pre-dried powder with a strengthening decomposer to prepare a mixture;
4) separation of elements
Carrying out thermal activation treatment on the mixture at 700-1000 ℃ for 30-120 min to separate elements copper and silicon from the crystalline of the peacock stone in the forms of copper sulfide and silicon dioxide respectively, and naturally cooling to 32 ℃ and taking out;
5) separation of components
Carrying out wet grinding on the cooled material, wherein the concentration of ore pulp is 60-75%, and obtaining ore pulp containing mineral particles with the particle size of-25 mu m;
6) enrichment of constituent elements
And carrying out flotation on the obtained ore pulp to obtain copper sulfide concentrate and quartz tailings.
The copper content of the high-silicon copper oxide ore in the high-silicon copper oxide ore raw material is 2-15%, and the copper content of the peacock stone is more than 60%.
In the step 1), the mass percentage of the material with the particle size of-35 mu m in the whole material is more than 75%.
The ore grinding mode in the step 1) is dry grinding, and the ore grinding medium is steel balls.
The mass content of free water in the powder in the step 2) is less than 10 percent.
The intensified decomposer in the step 3) is a mixture of pyrrhotite and sulfur, the granularity of the intensified decomposer is-150-74 mu m, and the adding amount of the intensified decomposer is 2-15% of the mass of the high-silicon copper oxide ore.
The mass ratio of mineral particles with the particle size of-25 mu m in the ore pulp obtained in the step 5) is more than 60 percent.
In the step 6), the pH range of flotation is 6-10, the collecting agent is a mixture of butyl xanthate, amyl xanthate and ammonium butyl black, the using amount of the collecting agent is 60-200 g/t, and the foaming agent is a mixture of pine oil and MIBC, and the using amount of the foaming agent is 30-60 g/t.
The copper content of the copper sulfide concentrate obtained by flotation in the step 6) is more than 50%, and the copper recovery rate is more than 75%.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The method for deeply separating and enriching copper in the high-silicon copper oxide ore is characterized by sequentially comprising the following steps of:
1) preparation of powder
Crushing and grinding the high-silicon copper oxide ore raw material to a material with the particle size of-55 to-35 mu m;
2) predrying
Pre-drying the obtained material at the drying temperature of 50-150 ℃ for 30-90 min to obtain powder;
3) mixing material
Uniformly mixing the pre-dried powder with a strengthening decomposer to prepare a mixture;
4) separation of elements
Carrying out thermal activation treatment on the mixture at 700-1000 ℃ for 30-120 min to separate elements copper and silicon from the crystalline of the peacock stone in the forms of copper sulfide and silicon dioxide respectively, and taking out after naturally cooling to 8-32 ℃;
5) separation of components
Carrying out wet grinding on the cooled material, wherein the concentration of ore pulp is 60-75%, and obtaining ore pulp containing mineral particles with the particle size of-15 to-25 mu m;
6) enrichment of constituent elements
And carrying out flotation on the obtained ore pulp to obtain copper sulfide concentrate and quartz tailings.
2. The method for deep separation and copper enrichment of high-silicon copper oxide ore according to claim 1, characterized in that: the copper content of the high-silicon copper oxide ore in the high-silicon copper oxide ore raw material is 2-15%, and the copper content of the peacock stone is more than 60%.
3. The method for deep separation and copper enrichment of high-silicon copper oxide ore according to claim 1, characterized in that: in the step 1), the mass percentage of the material with the particle size of-45 mu m in the whole material is more than 75%.
4. The method for deep separation and copper enrichment of high-silicon copper oxide ore according to claim 3, characterized in that: the ore grinding mode in the step 1) is dry grinding, and the ore grinding medium is one of a steel bar, ceramic or steel ball.
5. The method for deep separation and copper enrichment of high-silicon copper oxide ore according to claim 1, characterized in that: the mass content of free water in the powder in the step 2) is less than 10 percent.
6. The method for deep separation and copper enrichment of high-silicon copper oxide ore according to claim 1, characterized in that: the intensified decomposer in the step 3) is one or more of pyrrhotite, pyrite and sulfur, the granularity of the intensified decomposer is-150-74 mu m, and the adding amount of the intensified decomposer is 2-15% of the mass of the high-silicon copper oxide ore.
7. The method for deep separation and copper enrichment of high-silicon copper oxide ore according to claim 1, characterized in that: the mass ratio of mineral particles with the particle size of-15 to-25 mu m obtained in the step 5) is more than 60 percent.
8. The method for deep separation and copper enrichment of high-silicon copper oxide ore according to claim 1, characterized in that: in the step 6), the flotation pH range is 6-10, the collecting agent is one or more of ethyl xanthate, butyl xanthate, amyl xanthate and ammonium-butyl-black, the using amount is 60-200 g/t, and the foaming agent is one or two of pine oil and MIBC, and the using amount is 30-60 g/t.
9. The method for deep separation and copper enrichment of high-silicon copper oxide ore according to claim 8, characterized in that: the copper content of the copper sulfide concentrate obtained by flotation in the step 6) is more than 50%, and the copper recovery rate is more than 75%.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2149709C1 (en) * | 1998-12-01 | 2000-05-27 | Баков Антон Алексеевич | Method of processing oxidized copper ores |
| RU2352401C2 (en) * | 2007-04-16 | 2009-04-20 | Государственное образовательное учреждение высшего профессионального образования "Московский государственный институт стали и сплавов" (технологический университет) | Method of flotation extraction of sulphide concentrate from sulphide -oxidised copper ore |
-
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2149709C1 (en) * | 1998-12-01 | 2000-05-27 | Баков Антон Алексеевич | Method of processing oxidized copper ores |
| RU2352401C2 (en) * | 2007-04-16 | 2009-04-20 | Государственное образовательное учреждение высшего профессионального образования "Московский государственный институт стали и сплавов" (технологический университет) | Method of flotation extraction of sulphide concentrate from sulphide -oxidised copper ore |
Non-Patent Citations (2)
| Title |
|---|
| 印万忠等: "难选氧化铜矿选冶技术现状与展望", 《有色金属工程》 * |
| 韦华祖: "孔雀石硫化焙烧-浮选的研究", 《湖南有色金属》 * |
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