CN106362868B - A kind of ore-dressing technique reducing content of magnesia in copper sulfide ore flotation concentrate - Google Patents
A kind of ore-dressing technique reducing content of magnesia in copper sulfide ore flotation concentrate Download PDFInfo
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- CN106362868B CN106362868B CN201610999812.0A CN201610999812A CN106362868B CN 106362868 B CN106362868 B CN 106362868B CN 201610999812 A CN201610999812 A CN 201610999812A CN 106362868 B CN106362868 B CN 106362868B
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- 239000012141 concentrate Substances 0.000 title claims abstract description 110
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 54
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 238000005188 flotation Methods 0.000 title claims abstract description 32
- 239000000395 magnesium oxide Substances 0.000 title claims abstract description 29
- 239000010949 copper Substances 0.000 claims abstract description 115
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 112
- 229910052802 copper Inorganic materials 0.000 claims abstract description 112
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 55
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 55
- 239000011734 sodium Substances 0.000 claims abstract description 55
- 238000000227 grinding Methods 0.000 claims abstract description 39
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical compound CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 24
- 238000010926 purge Methods 0.000 claims description 21
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 19
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 19
- 239000004571 lime Substances 0.000 claims description 19
- 238000003801 milling Methods 0.000 claims description 18
- 239000002516 radical scavenger Substances 0.000 claims description 13
- 230000008859 change Effects 0.000 claims description 9
- 238000007670 refining Methods 0.000 claims description 9
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 8
- 239000005864 Sulphur Substances 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 6
- BWFPGXWASODCHM-UHFFFAOYSA-N copper monosulfide Chemical class [Cu]=S BWFPGXWASODCHM-UHFFFAOYSA-N 0.000 claims description 4
- 238000004073 vulcanization Methods 0.000 claims description 4
- FENRSEGZMITUEF-ATTCVCFYSA-E [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].OP(=O)([O-])O[C@@H]1[C@@H](OP(=O)([O-])[O-])[C@H](OP(=O)(O)[O-])[C@H](OP(=O)([O-])[O-])[C@H](OP(=O)(O)[O-])[C@H]1OP(=O)([O-])[O-] Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].OP(=O)([O-])O[C@@H]1[C@@H](OP(=O)([O-])[O-])[C@H](OP(=O)(O)[O-])[C@H](OP(=O)([O-])[O-])[C@H](OP(=O)(O)[O-])[C@H]1OP(=O)([O-])[O-] FENRSEGZMITUEF-ATTCVCFYSA-E 0.000 claims 1
- 229940083982 sodium phytate Drugs 0.000 claims 1
- 230000002401 inhibitory effect Effects 0.000 abstract description 9
- 229910000514 dolomite Inorganic materials 0.000 abstract description 8
- 239000010459 dolomite Substances 0.000 abstract description 8
- 229910001779 copper mineral Inorganic materials 0.000 abstract description 7
- 239000003112 inhibitor Substances 0.000 abstract description 6
- 238000004064 recycling Methods 0.000 abstract description 6
- 230000009467 reduction Effects 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 238000007667 floating Methods 0.000 abstract description 3
- 231100000252 nontoxic Toxicity 0.000 abstract description 3
- 230000003000 nontoxic effect Effects 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 11
- 229910052500 inorganic mineral Inorganic materials 0.000 description 9
- 239000011707 mineral Substances 0.000 description 9
- 238000011084 recovery Methods 0.000 description 9
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000004021 humic acid Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 229910052951 chalcopyrite Inorganic materials 0.000 description 2
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910052569 sulfide mineral Inorganic materials 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 241000907663 Siproeta stelenes Species 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910052948 bornite Inorganic materials 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052955 covellite Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 239000010433 feldspar Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- B03D1/016—Macromolecular compounds
-
- 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
- B03D1/018—Mixtures of inorganic and organic compounds
-
- 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
- B03D2201/06—Depressants
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of ore-dressing techniques of content of magnesia in reduction copper sulfide ore flotation concentrate, belong to technical field of beneficiation.This method includes ore grinding, flotation, regrinds and selected four big steps.Compared with prior art, the present invention uses sodium humate as the inhibitor of dolomite, and dosage is few, and inhibiting effect is strong；Using, in the selected middle dosing method for adding sodium humate, the selectivity of its inhibiting effect is helped to improve after copper coarse concentrate regrinding, copper mineral recycling is influenced small.Floating agent used by ore-dressing technique of the present invention is non-toxic or low-toxic, environmental-friendly, application easy to spread.
Description
Technical field
The invention belongs to technical field of beneficiation, are related to a kind of choosing for reducing content of magnesia in copper sulfide ore flotation concentrate
The ore-dressing technique of dolomitic gangue in miner's skill more particularly to a kind of sorting copper sulfide concentrate.
Background technique
Dolomite is as a kind of mineral that content of magnesia is high, in copper sulfide mineral floatation process, when raw ore content is high
With sorting not exclusively and when entering copper concentrate, it is high to will cause in copper concentrate content of magnesia, cause smelting process leads to the problem of with
It is difficult.
Dolomite mainly uses in sorting copper sulfide ore to reduce content of magnesia in flotation concentrate both at home and abroad at present
The method for adding the inhibitor such as waterglass, carboxymethyl cellulose, calgon, humic acid, but after these this methods of use,
Content of magnesia is still higher, as a result undesirable, and these inhibitor substances have stronger inhibiting effect to copper mineral, cause
It is larger that the rate of recovery of copper reduces amplitude.Therefore how overcome the deficiencies in the prior art is current technical field of beneficiation urgent need to resolve
Problem.
Summary of the invention
It is an object of the present invention to solve the deficiency of the existing technology and provide in a kind of reduction copper sulfide ore flotation concentrate
The ore-dressing technique of content of magnesia, which can effectively reduce content of magnesia in copper sulfide ore flotation concentrate, and be adopted
Inhibitor has good selectivity, and recycling on copper mineral influences small, application easy to spread.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of ore-dressing technique reducing content of magnesia in copper sulfide ore flotation concentrate, comprising the following steps:
Copper sulfide raw ore is carried out ore grinding using ore mill, when ore grinding, lime is added simultaneously in ore mill by step (1),
The additional amount of lime is 500 ~ 1500 g tons, and grinding fineness is -74 μm 75% ~ 85%, obtains raw ore ore milling product；
Step (2) carries out copper sulfide flotation, the sulphur being added in floatation process to the raw ore ore milling product that step (1) obtains
Change sodium total amount is 100 ~ 200 g tons, butyl xanthate total amount is 50 ~ 150 g tons and 2# oil total amount is 50 ~ 150 g tons, obtains copper
Rough concentrate；
Step (3) regrinds the copper rough concentrate that step (2) obtains, and grinding fineness is -48 μm 90% ~ 95%, obtains
Regrind copper rough concentrate；
Step (4), to step (3) obtain regrind copper rough concentrate carry out it is selected, sodium humate is added in refining process, obtains
Obtain copper sulfide concentrate；The additional amount of sodium humate is 200 ~ 400 g tons.
It is further preferred that flotation described in step (2) includes the secondary roughing successively carried out and once purging selection, twice
The copper rough concentrate that roughing obtains carries out the regrinding process of step (3) after merging, copper scavenger concentrate returns to first time roughing.
It is further preferred that the total dosage of quality Zhan that 2# oil adds in secondary roughing and once purging selection be followed successively by 80%,
13-15%,5-7%；
The total dosage of quality Zhan that vulcanized sodium adds in secondary roughing and once purging selection is followed successively by 60%, 30%, 10%；
The total dosage of quality Zhan that butyl xanthate adds in secondary roughing and once purging selection be followed successively by 60%-65%, 20%-30%,
10%-15%.；
But in actual application, ratio is without being limited thereto.
It is further preferred that selected described in step (4) is secondary or triple cleaning.
It is further preferred that selected obtained cleaner tailings returns to first time roughing for the first time；Selected for the second time
The cleaner tailings arrived is selected back to first time；Obtained cleaner tailings selected for the third time is selected back to second.
It is further preferred that the ore-dressing technique for reducing content of magnesia in copper sulfide ore flotation concentrate, packet
Include following steps:
Copper sulfide raw ore is carried out ore grinding using ore mill, when ore grinding, lime is added simultaneously in ore mill by step (1),
The additional amount of lime is 500 ~ 1500 g tons, and grinding fineness is -74 μm 75% ~ 85%, obtains raw ore ore milling product；
Step (2), the raw ore ore milling product that step (1) is obtained be added 60 g tons of vulcanized sodium, 50 g tons of butyl xanthate and
2# 60 g tons of progress primary vulcanization copper roughings of oil, obtain copper rough concentrate I and the thick tailing I of copper；
30 g tons of vulcanized sodium, 20 g tons of butyl xanthate and 2# second of sulphur of oily 10 g tons of progress are added into the thick tailing I of copper
Change copper roughing, obtains copper rough concentrate II and the thick tailing II of copper；
The oily 5 g tons of progress copper sulfides of 10 g tons of vulcanized sodium, 10 g tons of butyl xanthate and 2# are added into the thick tailing II of copper to sweep
Choosing, obtains copper scavenger concentrate and tailing, and copper scavenger concentrate returns to first time roughing；
Step (3) is regrinded, grinding fineness after merging copper rough concentrate I and copper rough concentrate II that step (2) obtains
It is -48 μm 95%, obtains regrinding copper rough concentrate；
Step (4) carries out secondary or triple cleaning to regrinding of obtaining of step (3) in copper rough concentrate, in refining process plus
Enter sodium humate, obtains copper sulfide concentrate；The additional amount of sodium humate is 200-400 g tons.
The principle of the present invention:
Humic acid is a kind of natural polymer polyeletrolyte, has colloidal compound property, can be in different pH condition
Lower and various metals ion forms chelate, including Fe2+、Fe3+、Cu2+、Ca2+Plasma, thus can be adsorbed on containing associated metal
Inhibiting effect is generated on the mineral of ion component.Copper coarse concentrate regrinding is to promote the abundant dissociation of copper mineral and add in selected
Sodium humate is added to facilitate the selectivity of its inhibiting effect, to reach the mesh for not only inhibiting dolomite but also not influencing copper mineral recycling
's.
Compared with prior art, the present invention has the advantages that:
(1) present invention uses sodium humate as the inhibitor of dolomite, and dosage is 200-400 g tons, and dosage is few, inhibits
Effect is strong；
(2) present invention is using in the dosing method of selected middle addition sodium humate, helping to improve after copper coarse concentrate regrinding
The selectivity of its inhibiting effect, Cu Concentrate Grade improve 3%-6%, and copper concentrate content of magnesia reduces 3%-5%, and copper recovery only drops
Low 0.2%-0.9%, good separation effect influence copper mineral recycling small；
(3) floating agent used by ore-dressing technique of the present invention is non-toxic or low-toxic, environmental-friendly.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and illustrative embodiments and their description of the invention are for explaining
The present invention does not constitute improper limitations of the present invention.
Fig. 1 is the flow diagram that the present invention reduces the ore-dressing technique of content of magnesia in copper sulfide ore flotation concentrate.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail.
It will be understood to those of skill in the art that the following example is merely to illustrate the present invention, and it should not be regarded as limiting this hair
Bright range.In the examples where no specific technique or condition is specified, described technology or conditions according to the literature in the art
Or it is carried out according to product description.Production firm person is not specified in material therefor or instrument, is that can be obtained by purchase
Conventional products.
The present invention unless otherwise stated, percentage sign representation quality percentage.
The present invention only has concrete restriction to the addition total amount of sodium humate, and the amount of each selected middle addition is wanted without special
It asks, but different addition manners can have certain influence to mineral processing index, can be adjusted according to actual needs.
Embodiment 1
As shown in Figure 1, a kind of ore-dressing technique for reducing content of magnesia in copper sulfide ore flotation concentrate, including following step
It is rapid:
Copper sulfide raw ore is carried out ore grinding using ore mill, when ore grinding, lime is added simultaneously in ore mill by step (1),
The additional amount of lime is 1000 g tons, and grinding fineness is -74 μm 80%, obtains raw ore ore milling product；
Step (2), the raw ore ore milling product that step (1) is obtained be added 60 g tons of vulcanized sodium, 50 g tons of butyl xanthate and
2# 60 g tons of progress primary vulcanization copper roughings of oil, obtain copper rough concentrate I and the thick tailing I of copper；
30 g tons of vulcanized sodium, 20 g tons of butyl xanthate and 2# second of sulphur of oily 10 g tons of progress are added into the thick tailing I of copper
Change copper roughing, obtains copper rough concentrate II and the thick tailing II of copper；
The oily 5 g tons of progress copper sulfides of 10 g tons of vulcanized sodium, 10 g tons of butyl xanthate and 2# are added into the thick tailing II of copper to sweep
Choosing, obtains copper scavenger concentrate and tailing, and copper scavenger concentrate returns to first time roughing；
Step (3) regrinds the merging of copper rough concentrate I and copper rough concentrate II that step (2) obtains, and grinding fineness is-
It 48 μm 95%, obtains regrinding copper rough concentrate；
Step (4), to step (3) obtain regrind copper rough concentrate carry out it is selected, sodium humate is added in refining process, obtains
Obtain copper sulfide concentrate；The additional amount of sodium humate: selected for the first time to be added 300 g tons；Obtained cleaner tailings selected for the first time
Back to first time roughing；Second of selected obtained cleaner tailings is selected back to first time.
Embodiment 2
As shown in Figure 1, a kind of ore-dressing technique for reducing content of magnesia in copper sulfide ore flotation concentrate, including following step
It is rapid:
Copper sulfide raw ore is carried out ore grinding using ore mill, when ore grinding, lime is added simultaneously in ore mill by step (1),
The additional amount of lime is 1000 g tons, and grinding fineness is -74 μm 80%, obtains raw ore ore milling product；
Step (2), the raw ore ore milling product that step (1) is obtained be added 60 g tons of vulcanized sodium, 50 g tons of butyl xanthate and
2# 60 g tons of progress primary vulcanization copper roughings of oil, obtain copper rough concentrate I and the thick tailing I of copper；
30 g tons of vulcanized sodium, 20 g tons of butyl xanthate and 2# second of sulphur of oily 10 g tons of progress are added into the thick tailing I of copper
Change copper roughing, obtains copper rough concentrate II and the thick tailing II of copper；
The oily 5 g tons of progress copper sulfides of 10 g tons of vulcanized sodium, 10 g tons of butyl xanthate and 2# are added into the thick tailing II of copper to sweep
Choosing, obtains copper scavenger concentrate and tailing, and copper scavenger concentrate returns to first time roughing；
Step (3) is regrinded, grinding fineness after merging the thick tailing I of copper and copper rough concentrate II that step (2) obtains
It is -48 μm 95%, obtains regrinding copper rough concentrate；
Step (4), to step (3) obtain regrind copper rough concentrate carry out it is selected, sodium humate is added in refining process, obtains
Obtain copper sulfide concentrate；The additional amount of sodium humate is respectively: selected for the first time that 300 g tons, second of selected addition 100 is added
G ton；Obtained cleaner tailings selected for the first time returns to first time roughing；Second of selected obtained cleaner tailings returns to
It is selected for the first time；Obtained cleaner tailings selected for the third time is selected back to second.
Embodiment 3
A kind of ore-dressing technique reducing content of magnesia in copper sulfide ore flotation concentrate, comprising the following steps:
Copper sulfide raw ore is carried out ore grinding using ore mill, when ore grinding, lime is added simultaneously in ore mill by step (1),
The additional amount of lime is 500 g tons, and grinding fineness is -74 μm 75%, obtains raw ore ore milling product；
Step (2) carries out copper sulfide flotation, the sulphur being added in floatation process to the raw ore ore milling product that step (1) obtains
Change sodium total amount is 100 g tons, butyl xanthate total amount is 50 g tons and 2# oil total amount is 50 g tons, obtains copper rough concentrate；
The flotation includes the secondary roughing successively carried out and once purging selection, and the copper rough concentrate that roughing twice obtains merges
The regrinding process of step (3) is carried out afterwards, and copper scavenger concentrate returns to first time roughing；
The total dosage of quality Zhan that 2# oil adds in secondary roughing and once purging selection is followed successively by 80%, 14%, 6%；
The total dosage of quality Zhan that vulcanized sodium adds in secondary roughing and once purging selection is followed successively by 60%, 30%, 10%；
The total dosage of quality Zhan that butyl xanthate adds in secondary roughing and once purging selection is followed successively by 60%, 30%, 10%；
Step (3) regrinds the copper rough concentrate that step (2) obtains, and grinding fineness is -48 μm 90%, is regrinded
Copper rough concentrate；
Step (4) carries out triple cleaning to the copper rough concentrate of regrinding that step (3) obtains, humic acid is added in refining process
Sodium obtains copper sulfide concentrate；The additional amount of sodium humate is 200 g tons, is all added in essence for the first time.
Obtained cleaner tailings selected for the first time returns to first time roughing；Second of selected obtained cleaner tailings returns
It is selected to first time；Obtained cleaner tailings selected for the third time is selected back to second.
Embodiment 4
A kind of ore-dressing technique reducing content of magnesia in copper sulfide ore flotation concentrate, comprising the following steps:
Copper sulfide raw ore is carried out ore grinding using ore mill, when ore grinding, lime is added simultaneously in ore mill by step (1),
The additional amount of lime is 1500 g tons, and grinding fineness is -74 μm 85%, obtains raw ore ore milling product；
Step (2) carries out copper sulfide flotation, the sulphur being added in floatation process to the raw ore ore milling product that step (1) obtains
Change sodium total amount is 200 g tons, butyl xanthate total amount is 150 g tons and 2# oil total amount is 150 g tons, obtains copper rough concentrate；
The flotation includes the secondary roughing successively carried out and once purging selection, and the copper rough concentrate that roughing twice obtains merges
The regrinding process of step (3) is carried out afterwards, and copper scavenger concentrate returns to first time roughing；
The total dosage of quality Zhan that 2# oil adds in secondary roughing and once purging selection is followed successively by 80%, 10%, 10%；
The total dosage of quality Zhan that vulcanized sodium adds in secondary roughing and once purging selection is followed successively by 60%, 30%, 10%；
The total dosage of quality Zhan that butyl xanthate adds in secondary roughing and once purging selection is followed successively by 65%, 20%, 15%；
Step (3) regrinds the copper rough concentrate that step (2) obtains, and grinding fineness is -48 μm 90% ~ 95%, obtains
Regrind copper rough concentrate；
Step (4) carries out triple cleaning to the copper rough concentrate of regrinding that step (3) obtains, humic acid is added in refining process
Sodium obtains copper sulfide concentrate；The additional amount of sodium humate is 400 g tons, selected for the first time that 200 g tons, second of essence is added
Choosing is added 100 g tons, 100 g tons of of the selected addition of third time
Obtained cleaner tailings selected for the first time returns to first time roughing；Second of selected obtained cleaner tailings returns
It is selected to first time；Obtained cleaner tailings selected for the third time is selected back to second.
Embodiment 5
A kind of ore-dressing technique reducing content of magnesia in copper sulfide ore flotation concentrate, comprising the following steps:
Copper sulfide raw ore is carried out ore grinding using ore mill, when ore grinding, lime is added simultaneously in ore mill by step (1),
The additional amount of lime is 1000 g tons, and grinding fineness is -74 μm 80%, obtains raw ore ore milling product；
Step (2) carries out copper sulfide flotation, the sulphur being added in floatation process to the raw ore ore milling product that step (1) obtains
Change sodium total amount is 150 g tons, butyl xanthate total amount is 100 g tons and 2# oil total amount is 100 g tons, obtains copper rough concentrate；
The flotation includes the secondary roughing successively carried out and once purging selection, and the copper rough concentrate that roughing twice obtains merges
The regrinding process of step (3) is carried out afterwards, and copper scavenger concentrate returns to first time roughing；
The total dosage of quality Zhan that 2# oil adds in secondary roughing and once purging selection is followed successively by 80%, 15%, 5%；
The total dosage of quality Zhan that vulcanized sodium adds in secondary roughing and once purging selection is followed successively by 60%, 30%, 10%；
The total dosage of quality Zhan that butyl xanthate adds in secondary roughing and once purging selection is followed successively by 65%, 25%, 10%；
Step (3) regrinds the copper rough concentrate that step (2) obtains, and grinding fineness is -48 μm 90% ~ 95%, obtains
Regrind copper rough concentrate；
Step (4) carries out recleaning to the copper rough concentrate of regrinding that step (3) obtains, humic acid is added in refining process
Sodium obtains copper sulfide concentrate；The additional amount of sodium humate is 350 g tons, selected for the first time that 250 g tons, second of essence is added
Choosing is added 100 g tons；
Obtained cleaner tailings selected for the first time returns to first time roughing；Second of selected obtained cleaner tailings returns
It is selected to first time.
Application example:
Certain copper sulfide ore, raw ore copper grade 0.434%, content of magnesia 16.06%.Copper sulfide mineral is mainly spot copper
Mine, chalcopyrite, gangue mineral are mainly dolomite, quartz, feldspar, copper occurrence status: bornite 73.66%, chalcopyrite
17.41%, vitreous copper 2.90%, covellite 2.96%, malachite 3.07%, magnesia occurrence status: dolomite 97.83%, other
2.17%。
Process flow: roughing twice, once purging selection after raw ore ore grinding, recleaning after copper coarse concentrate regrinding.
Technological condition: -200 mesh 80% of raw ore grinding fineness, 1000 g tons of lime (enter mill, pH9.0)；Roughing is added
90 g tons of vulcanized sodium (I 60 g tons of roughing, II 30 g tons of roughing), 70 g tons of butyl xanthate (I 50 g tons of roughing, roughing II 20
G ton), oily 70 g tons (I 50 g tons of roughing, II 20 g tons of the roughing) of 2#；It scans and 10 g tons of vulcanized sodium, butyl xanthate 10 is added
G ton, 2# oil 5 g tons；- 300 mesh 95% of copper coarse concentrate regrinding fineness；Selected I is added 300 g tons of sodium humate.
Comparative example 1
1 flotation of comparative example is identical as application example to mine.
Process flow: for copper rough concentrate without regrinding, remaining is identical as application example.
Technological condition: selected to be added without sodium humate, remaining is identical as application example.
Comparative example 2
2 flotation of comparative example is identical as application example to mine.
Process flow: for copper rough concentrate without regrinding, remaining is identical as application example.
Technological condition: identical as application example.
The test result of embodiment 1-2, application example and comparative example are shown in Table 1.
1 embodiment 1-2 of table, application example and comparative example 1-2 mineral processing index (%)
It is compared from the mineral processing index of application example and comparative example 1, copper recovery is reduced to 90.29% by 90.53%, only reduces
0.25%；Cu Concentrate Grade is increased to 28.78% by 22.80%, improves 5.98%；Concentrate content of magnesia is reduced to by 8.38%
4.53%, reduce by 3.85%；The ore-dressing technique uses sodium humate as the inhibitor of dolomite, and 300 g tons of dosage, dosage is few,
Inhibiting effect is strong, and to reducing, concentrate content of magnesia effect is obvious, influences on copper mineral recycling and copper recovery small.
It is compared from comparative example 2 and the mineral processing index of comparative example 1, copper recovery is reduced to 89.66% by 90.53%, reduces
0.87%, copper recovery reduction is more, therefore regrinds and be necessary to the implementation of copper rough concentrate, and the ore-dressing technique uses copper rough concentrate
In the dosing method of selected middle addition sodium humate after regrinding, the selectivity of its inhibiting effect is helped to improve.
It is compared from embodiment 2 and the mineral processing index of comparative example 1, Cu Concentrate Grade is increased to 35.61% by 22.80%, mentions
It is high by 12.81%；Concentrate content of magnesia is reduced to 2.88% by 8.38%, reduces by 5.50%；Therefore selected addition sodium humate is to raising
Separating effect, reduction concentrate content of magnesia, raising concentrate copper grade effect are obvious.
Embodiment 1 takes into account the rate of recovery and concentrate grade, and concentration times and sodium humate dosage are moderate；Embodiment 2 stresses essence
Mine grade, concentration times are more, and sodium humate dosage is high.
It is compared from embodiment 2 and the mineral processing index of comparative example 1, copper recovery is reduced to 88.70% by 90.53%, reduces
1.83%, copper recovery reduces sodium humate dosages that are more, therefore should controlling suitable concentration times and be suitable for, avoids influencing copper mine
The recycling of object.
The floating agent that the ore-dressing technique uses is widely used conventional dose, non-toxic or low-toxic, environmental-friendly.
Basic principles and main features and advantages of the present invention of the invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (4)
1. a kind of ore-dressing technique for reducing content of magnesia in copper sulfide ore flotation concentrate, which is characterized in that including following step
It is rapid:
Copper sulfide raw ore is carried out ore grinding using ore mill, when ore grinding, lime, lime is added simultaneously in ore mill by step (1)
Additional amount be 500 ~ 1500 g tons, grinding fineness be -74 μm 75% ~ 85%, obtain raw ore ore milling product；
Step (2) carries out copper sulfide flotation, the vulcanized sodium being added in floatation process to the raw ore ore milling product that step (1) obtains
Total amount is 100 ~ 200 g tons, butyl xanthate total amount is 50 ~ 150 g tons and 2# oil total amount is 50 ~ 150 g tons, and it is coarse-fine to obtain copper
Mine；
Step (3) regrinds the copper rough concentrate that step (2) obtains, and grinding fineness is -48 μm 90% ~ 95%, is regrinded
Copper rough concentrate；
Step (4) carries out selected, is added sodium humate in refining process, obtains sulphur to the copper rough concentrate of regrinding that step (3) obtains
Change copper concentrate；The additional amount of sodium humate is 200 ~ 400 g tons；
Wherein, flotation described in step (2) includes the secondary roughing successively carried out and once purging selection, and the copper that roughing twice obtains is thick
Concentrate carries out the regrinding process of step (3) after merging, copper scavenger concentrate returns to first time roughing；
The total dosage of quality Zhan that 2# oil adds in secondary roughing and once purging selection is followed successively by 80%, 10%-15%, 5%-10%；
The total dosage of quality Zhan that vulcanized sodium adds in secondary roughing and once purging selection is followed successively by 60%, 30%, 10%；
The total dosage of quality Zhan that butyl xanthate adds in secondary roughing and once purging selection is followed successively by 60%-65%, 20%-30%, 10%-
15%。
2. the ore-dressing technique according to claim 1 for reducing content of magnesia in copper sulfide ore flotation concentrate, feature
It is, selected described in step (4) is secondary or triple cleaning.
3. the ore-dressing technique according to claim 2 for reducing content of magnesia in copper sulfide ore flotation concentrate, feature
It is, selected obtained cleaner tailings returns to first time roughing for the first time；Second of selected obtained cleaner tailings returns to
It is selected for the first time；Obtained cleaner tailings selected for the third time is selected back to second.
4. the ore-dressing technique according to claim 1 for reducing content of magnesia in copper sulfide ore flotation concentrate, feature
It is, comprising the following steps:
Copper sulfide raw ore is carried out ore grinding using ore mill, when ore grinding, lime, lime is added simultaneously in ore mill by step (1)
Additional amount be 500 ~ 1500 g tons, grinding fineness be -74 μm 75% ~ 85%, obtain raw ore ore milling product；
60 g tons of vulcanized sodium, 50 g tons of butyl xanthate and 2# oil is added to the raw ore ore milling product that step (1) obtains in step (2)
60 g tons of progress primary vulcanization copper roughings, obtain copper rough concentrate I and the thick tailing I of copper；
30 g tons of vulcanized sodium, 20 g tons of butyl xanthate and 2# second of copper sulfide of oily 10 g tons of progress are added into the thick tailing I of copper
Roughing obtains copper rough concentrate II and the thick tailing II of copper；
The oily 5 g tons of progress copper sulfides of 10 g tons of vulcanized sodium, 10 g tons of butyl xanthate and 2# are added into the thick tailing II of copper to scan,
Copper scavenger concentrate and tailing are obtained, copper scavenger concentrate returns to first time roughing；
Step (3) is regrinded after merging copper rough concentrate I and copper rough concentrate II that step (2) obtains, and grinding fineness is -48 μ
M 95% obtains regrinding copper rough concentrate；
Step (4), carries out secondary or triple cleaning to regrinding of obtaining of step (3) in copper rough concentrate, be added in refining process rotten
Sodium phytate obtains copper sulfide concentrate；The additional amount of sodium humate is 200-400 g tons.
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| CN110813546A (en) * | 2019-11-28 | 2020-02-21 | 昆明理工大学 | Flotation method of high-calcium-magnesium type oxidized and vulcanized mixed copper ore |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110026294A (en) * | 2019-05-30 | 2019-07-19 | 阳谷祥光铜业有限公司 | A kind of mineral floating method and mineral floating system |
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