CN109530095A - A kind of flotation device and flotation column joint gradient extracting method of misproportion dissemination copper sulfide ore - Google Patents
A kind of flotation device and flotation column joint gradient extracting method of misproportion dissemination copper sulfide ore Download PDFInfo
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- CN109530095A CN109530095A CN201811168504.9A CN201811168504A CN109530095A CN 109530095 A CN109530095 A CN 109530095A CN 201811168504 A CN201811168504 A CN 201811168504A CN 109530095 A CN109530095 A CN 109530095A
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- flotation
- ore
- copper
- flotation device
- flotation column
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- 238000005188 flotation Methods 0.000 title claims abstract description 184
- 238000000034 method Methods 0.000 title claims abstract description 45
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000010949 copper Substances 0.000 claims abstract description 87
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 85
- 229910052802 copper Inorganic materials 0.000 claims abstract description 85
- 239000012141 concentrate Substances 0.000 claims abstract description 64
- 238000004140 cleaning Methods 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims description 28
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 21
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 21
- 239000004571 lime Substances 0.000 claims description 21
- 238000010926 purge Methods 0.000 claims description 18
- 238000000227 grinding Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 13
- OXVXWUDYARFPLN-UHFFFAOYSA-N ethylazanium;hydron;sulfate Chemical compound CC[NH3+].OS([O-])(=O)=O OXVXWUDYARFPLN-UHFFFAOYSA-N 0.000 claims description 10
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical compound CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 3
- 239000003112 inhibitor Substances 0.000 claims description 3
- 229910052683 pyrite Inorganic materials 0.000 claims description 3
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims description 3
- 239000011028 pyrite Substances 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 5
- 229910001779 copper mineral Inorganic materials 0.000 abstract 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 229910052951 chalcopyrite Inorganic materials 0.000 description 3
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 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
- 238000004458 analytical method Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052948 bornite Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000012991 xanthate 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
- 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
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1406—Flotation machines with special arrangement of a plurality of flotation cells, e.g. positioning a flotation cell inside another
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
-
- 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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/06—Depressants
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of flotation devices of misproportion dissemination copper sulfide ore and flotation column to combine gradient extracting method, comprising the following steps: the ore pulp that tcrude ore is added water mill mine that suitable concentration is made by S1 after broken；Ore pulp is put into roughing in flotation device and obtains rougher concentration and rougher tailings by S2；S3 rougher concentration is regrinded；Rougher concentration after S4 is regrinded obtains primary cleaning concentrate and primary cleaner tailing by flotation column is selected；S5 primary cleaning concentrate obtains a step copper concentrate by flotation column is selected；S6 primary cleaner tailing obtains two step copper concentrates through tertiary flotation machine is selected；S7 rougher tailings is scanned to obtain copper tailing.Compared with the existing technology, the present invention recycles particulate copper mineral by flotation column, tailing of the flotation column after selected is carried out using flotation device selected, so that can not effectively be recycled by the coarse grain that flotation column recycles by flotation device, not only it had recycled coarse grain but also had recycled particulate, recovery efficiency is substantially increased, the grade of copper concentrate is also improved.
Description
Technical field
The present invention relates to ore screening technical fields, and in particular to a kind of flotation device of misproportion dissemination copper sulfide ore and
Flotation column combines gradient extracting method.
Background technique
Copper is a kind of and the very close non-ferrous metal of human relation, is widely used in electrical, light industry, mechanical system
It makes, building industry, the fields such as national defense industry, is only second to aluminium in the consumption of China's nonferrous materials.As it can be seen that dividing from copper mine
Develop from the technology for extracting metallic copper concerning China's multi industries.
Copper Ores are the sulfide of copper or the aggregate of oxide and other mineral compositions, according to composition of ores and color
Difference be divided into the several types such as chalcopyrite, vitreous copper and bornite.Wherein, what China mainly exploited is chalcopyrite, chalcopyrite
Stone is in brassy, contains the elements such as copper (Cu), sulphur (S), iron (Fe).It is depleted with China's high brass ore resources, it is poor
Thin miscellaneous type copper mine is increasingly becoming the mainstream of copper resource exploitation.And the Mineral separation difficulty of poor thin miscellaneous type Copper Ores is high, especially slightly
The separating-purifying difficulty of the Copper Ores of thin misproportion dissemination is bigger.Because thick for misproportion dissemination copper sulfide ore
A large amount of particles and particulate have been distributed and disseminated grain size is extremely uneven in grain, and iron, sulfur content be high, especially element sulphur
Content is up to 18%~24%, results in the difficulty that it isolates copper concentrate and increases.
Currently, from misproportion dissemination Copper Ores there are mainly two types of the methods of separation metallic copper.First method, such as attached drawing
Shown in 1, former misproportion dissemination copper sulfide ore comminution is obtained into the lesser Copper Ores particle of granularity；Then ore particles are put into
In flotation device, carries out one roughing, triple cleaning and scan to obtain copper concentrate twice, chats sequence returns.Second method, i.e.,
Coarse concentrate regrinding flotation column dressing process: Copper Ores particle is obtained through process same as method one first, then by Copper Ores
Roughing is carried out in particle investment flotation device and obtains rougher concentration, and then rougher concentration puts into flotation column and carries out after regrinding
It is selected to obtain copper concentrate.
But for first method, ore dressing instrument as used in it is flotation device, and flotation machine equipment is to fine fraction
Copper Ores particle recovering effect it is bad, therefore in the lesser situation of most copper ore particles partial size, lead to part particulate
Copper mine enters in copper tailing, so that copper tailing grade is higher, and Cu Concentrate Grade is lower；And it is returned even if carrying out chats sequence
Operation, the rate of recovery are still relatively low.For second method, by Copper Ores particle, by flotation device roughing, to go out partial size lesser
Rougher concentration puts into flotation column after regrinding and carries out selected, compares flotation since flotation column equipment recycles fine-graded Copper Ores
Machine has greater advantage, but undesirable to coarsely graded Copper Ores particle recovering effect, therefore, the mine for causing a large amount of partial sizes thicker
Stone particle carries out effectively recycling in refining process in flotation column, so that copper tailing after coming out in flotation device
Grade is higher, the rate of recovery is low.
Summary of the invention
Based on this, the object of the present invention is to provide the flotation devices and flotation column of a kind of misproportion dissemination copper sulfide ore
Joint gradient extracting method reduces copper tailing grade to improve the rate of recovery of Copper Ores, i.e., the content of copper in reduction copper tailing.
The flotation device and flotation column of a kind of misproportion dissemination copper sulfide ore of the invention combine gradient extracting method, including
Following steps:
S1 ore grinding: tcrude ore being crushed, ore grinding, and in grinding process plus water is prepared into ore pulp；
S2 flotation device roughing: after the pH to 8.0~8.5 of ore pulp obtained by regulating step S1, butyl xanthate is added and collecting rises
Infusion stirs evenly, and puts into flotation device and carries out roughing, obtains rougher concentration and rougher tailings；
S3 rougher concentration is regrinded: carrying out ore grinding again to the resulting rougher concentration of step S2；
S4 rougher concentration flotation column is selected: carrying out a flotation column essence in the rougher concentration investment flotation column after regrinding
Choosing, obtains primary cleaning concentrate and primary cleaner tailing；
S5 primary cleaning concentrate flotation column is selected: will carry out two in the resulting primary cleaning concentrate investment flotation column of step S4
Secondary flotation column is selected, obtains recleaning chats and a step copper concentrate；
The recleaning middling recurrence repeats step S3~S5 to rougher concentration；
S6 primary cleaner tailing flotation device is selected: will carry out one in the resulting primary cleaner tailing investment flotation device of step S4
Secondary flotation device is selected, obtains primary cleaning tail concentrate and primary cleaning tail chats；
It is selected by secondary flotation machine is carried out in primary cleaning tail concentrate investment flotation device, obtain recleaning tail concentrate
With recleaning tail chats；The primary cleaning tail middling recurrence to roughing forms closed cycle；
It is selected by tertiary flotation machine is carried out in recleaning tail concentrate investment flotation device, obtain two step copper concentrates and three
Secondary selected tail chats；The recleaning tail middling recurrence is to the selected formation closed cycle of a flotation device；
The triple cleaning tail middling recurrence is to the selected formation closed cycle of secondary flotation machine；
S7 rougher tailings is scanned: will be carried out once purging selection in the resulting rougher tailings investment flotation device of step S2, is obtained one
It is secondary to scan tailing and once purging selection chats；
The once purging selection tailing is put into flotation device carry out it is secondary scan, obtain copper tailing and secondary scan chats；
The once purging selection middling recurrence roughing forms closed cycle；
Secondary middling recurrence to the once purging selection of scanning forms closed cycle.
Compared with the existing technology, the flotation device of misproportion dissemination copper sulfide ore of the invention and flotation column joint gradient mention
Take method selected to tailing progress gradient of the flotation column after selected by using the flotation device that can recycle coarse grain, so that not
It can effectively be recycled by the selected coarse granule of flotation column by flotation device, become two step copper concentrates, while flotation column continues
Recycling particulate obtains a step copper concentrate, to not only recycle coarse grain but also recycle particulate, substantially increases recovery efficiency, is also promoted
Copper content in copper concentrate, that is, improve the grade of copper concentrate, also reduce the grade of copper tailing.
Further, the collector and frother is any one in ethyl ammonia sulfate, EP and DY-1.
Preferably, the collector and frother is ethyl ammonia sulfate.
Further, in step S1, during broken, ore grinding is at ore pulp by tcrude ore, lime is added and makees pH regulator
With pyrite inhibitor, according to tcrude ore meter per ton, lime-crushed stone pile is 2000~3000g/t, and water is added to size mixing to ore pulp chats
Grain mass concentration is 32~35%.
Further, it in step S2, continuously adds lime and adjusts pH values of pulp to 8.0~8.5, based on tcrude ore per ton, add
Add 15~20g/t butyl xanthate, 70~80g/t ethyl ammonia sulfate, stir 2~3min, put into flotation device carry out roughing 10~
12min obtains rougher concentration and rougher tailings.
Further, in step S3, rougher concentration is put into cyclone and is classified, wherein cyclone overflow enters
Carry out that a flotation column is selected, and hydrocyclone sand is again introduced into cyclone after grinding again and is formed hierarchically in flotation column
It regrinds closed circuit；During rougher concentration is regrinded, based on tcrude ore per ton, 500~700g/t of lime is added, water is added to size mixing to mine
Ore particle mass concentration is 20%~25% in slurry, and pH values of pulp is 10~11.The present invention regrinds process by being added, so that ore
The uniformity that grain is sufficiently dissociated into monomer, improves ore particle, to be conducive to flotation.
Further, in step S4, the selected condition of a flotation column is, based on tcrude ore per ton, lime is added
400~500g/t, 10~15g/t of ethyl ammonia sulfate, pH values of pulp are 11~12,6~8min of flotation time.
Further, in step S5, the selected condition of the secondary flotation column is, based on tcrude ore per ton, lime is added
200~300g/t, pH values of pulp are 12~13,6~8min of flotation time.
Further, in step S6, the selected condition of a flotation device is, based on tcrude ore per ton, lime is added
300~400g/t, pH values of pulp are 11~12,6~8min of flotation time；The selected condition of the secondary flotation machine is, by per ton
200~300g/t of lime is added in tcrude ore meter, and pH values of pulp is 12~13,6~8min of flotation time；The tertiary flotation machine essence
The condition of choosing is 6~8min of flotation time.
Further, in step S7, the condition of the once purging selection is, based on tcrude ore per ton, 10~15g/t fourth is added
Base xanthate, 8~10min of flotation time；The secondary condition scanned is 10~12min of flotation time.
Further, in step S1, in the ore particle that grinds, ore particle Zhan total ore particle of the partial size less than 0.075mm
65%~70%；In step S3, in the ore particle that grinds, ore particle Zhan total ore particle of the partial size less than 0.043mm 75%~
80%.
In order to better understand and implement, the invention will now be described in detail with reference to the accompanying drawings.
Detailed description of the invention
Fig. 1 is the flow diagram of the separating and extracting process of the misproportion dissemination copper sulfide ore of the prior art；
Fig. 2 is the flotation device of misproportion dissemination copper sulfide ore of the invention and the stream of flotation column joint gradient extracting method
Journey schematic diagram.
Specific embodiment
It is mentioned referring to Fig. 2, it combines gradient for the flotation device and flotation column of misproportion dissemination copper sulfide ore of the invention
Take the flow diagram of method.The flotation device and flotation column of misproportion dissemination copper sulfide ore of the invention combine gradient extraction side
Method, comprising the following steps:
S1 ore grinding: the broken, ore grinding by tcrude ore is added lime in ore grinding and makees pH regulator and pyrite inhibitor, presses
According to tcrude ore meter per ton, lime-crushed stone pile is 2000~3000g/t, add water size mixing into ore pulp ore particle mass concentration be 32~
35%, pH values of pulp is 7.5~8.0.
S2 flotation device roughing: it into step 1 gained ore pulp, continuously adds lime and adjusts pH values of pulp to 8.0~8.5, by every
Ton tcrude ore meter, add 15~20g/t butyl xanthate, 70~80g/t ethyl ammonia sulfate, stir 2~3min, put into flotation device in into
Row 10~12min of roughing, obtains rougher concentration and rougher tailings.
S3 rougher concentration is regrinded: will be classified in the resulting rougher concentration investment cyclone of step S2, wherein cyclone
Overflow enters in flotation column that carry out a flotation column selected；Hydrocyclone sand enters in vertical mill to be ground again, after regrinding
Sand setting enter cyclone and continue to be classified, composition regrind it is closed circuit, until all sand settings all pass through cyclone overflow enter it is primary
The selected link of flotation column, i.e., until all rougher concentrations all pass through cyclone overflow into a selected link of flotation column.?
During rougher concentration is regrinded, based on tcrude ore per ton, 500~700g/t of lime is added, water is added to size mixing into ore pulp ore particle matter
Measuring concentration is 20%~25%, and pH values of pulp is 10~11.
S4 rougher concentration flotation column is selected: carrying out a flotation column essence in the rougher concentration investment flotation column after regrinding
400~500g/t of lime, 10~15g/t of ethyl ammonia sulfate is added based on tcrude ore per ton in choosing, and pH values of pulp is 11~12, when flotation
Between 6~8min, obtain primary cleaning concentrate and primary cleaner tailing.
S5 primary cleaning concentrate flotation column is selected: will carry out two in the resulting primary cleaning concentrate investment flotation column of step S4
Secondary flotation column is selected, and based on tcrude ore per ton, 200~300g/t of lime is added, and pH values of pulp is 12~13, and flotation time 6~
8min obtains recleaning chats and a step copper concentrate；The recleaning middling recurrence to rougher concentration forms closed cycle,
Step S3~S5 is repeated, until all recleaning chats all become a step copper concentrate, i.e., it is whole to all primary cleaning concentrate
As a step copper concentrate.
S6 primary cleaner tailing flotation device is selected: will carry out one in the resulting primary cleaner tailing investment flotation device of step S4
Secondary flotation device is selected, and based on tcrude ore per ton, 300~400g/t of lime is added, and pH values of pulp is 11~12, and flotation time 6~
8min obtains primary cleaning tail concentrate and primary cleaning tail chats；
It is selected by secondary flotation machine is carried out in primary cleaning tail concentrate investment flotation device, based on tcrude ore per ton, add
Enter 200~300g/t of lime, pH values of pulp is 12~13, and 6~8min of flotation time obtains recleaning tail concentrate and recleaning
Tail chats；The primary cleaning tail middling recurrence to roughing forms closed cycle；
Will the recleaning tail concentrate put into flotation device in carry out tertiary flotation machine it is selected, 6~8min of flotation time is obtained
To two step copper concentrates and triple cleaning tail chats；The recleaning tail middling recurrence forms closed circuit follow to a flotation device is selected
Ring；
The triple cleaning tail middling recurrence is to the selected formation closed cycle of secondary flotation machine；
S7 rougher tailings is scanned: once purging selection will be carried out in the resulting rougher tailings investment flotation device of step S2, by per ton
Tcrude ore meter, is added 10~15g/t butyl xanthate, and 8~10min of flotation time is obtained in once purging selection tailing and once purging selection
Mine；
Will the once purging selection tailing put into flotation device in carry out it is secondary scan, 10~12min of flotation time obtains copper tail
Mine and secondary scan chats；The once purging selection middling recurrence roughing forms closed cycle；
Secondary middling recurrence to the once purging selection of scanning forms closed cycle.
According to the method described above, in the present specification, three kinds of embodiments are specifically provided.
2015, our factory used the separating and extracting process of the first misproportion dissemination copper sulfide ore in the prior art,
Detailed process is shown in attached drawing 1.In by the end of June, 2016 our factory mineral processing circuit is transformed, using in this specification technical background
The second method of description --- coarse concentrate regrinding flotation column dressing process, after improvement project, 7-8 month copper in 2016 is practical to be returned
Yield average value is 78%, and 7-10 month average value 69% improves 9 percentage points within than 2015.Right again in by the end of August, 2016
Mineral processing circuit improves, and combines gradient using the flotation device and flotation column of misproportion dissemination copper sulfide ore of the invention
Extracting method, compares coarse concentrate regrinding flotation column dressing process, and copper recovery improves 5-6 percentage points once again.Generally, originally
Factory has been higher by 14.5 percentage points or more than 2015 same period of 7-10 month copper recovery in 2016.
According to sampling analysis, the main source that the rate of recovery improves is the coarse fraction copper concentrate that partial size is greater than 0.075mm, the part
Copper concentrate, which is primarily present in, merges copper concentrate through in the selected two obtained step copper concentrates of flotation device, copper metal content accounts for about
5%, and the coarse fraction copper concentrate through being greater than 0.075mm in the selected obtained step copper concentrate of flotation column only accounts for 0.5% or so, it can
See that coarse fraction copper concentrate of the partial size greater than 0.075mm mainly is recycled to obtain by flotation device.Copper is recycled using flotation column existing
In the technology of concentrate, greater than the coarse fraction copper concentrate of 0.075mm since partial size is excessive, flotation column is limited partial size by self structure,
It is poor to its recovering effect, cause this part copper concentrate not recycled effectively and enter copper tailing, causes the rate of recovery low
And copper tailing grade is higher, wastes ore resource.And flotation device and the flotation of misproportion dissemination copper sulfide ore of the invention
On the one hand column joint gradient extracting method reduces ore partial size by the process of regrinding, enable most copper ore as far as possible
Recycled by flotation column, on the other hand, it is selected to a flotation column after tailing be added flotation device it is selected so that partial size is greater than
The coarse fraction copper concentrate of 0.075mm is effectively recycled, and the Copper Ores for avoiding this part can not be selected and direct by flotation column
The case where waste, occurs, and improves copper recovery, while reducing copper tailing grade, has effectively recycled Copper Ores resource.
Table 1 2015 years, 7-10 month copper production target comparison in 2016
Compared with the existing technology, the flotation device of misproportion dissemination copper sulfide ore of the invention and flotation column joint gradient mention
Method is taken to obtain a step copper concentrate by using flotation column is selected to rougher concentration progress, while use can recycle the floating of coarse grain
Select machine selected to tailing progress gradient of the flotation column after selected, so that can not be led to by the coarse granule of the selected recycling of flotation column
It crosses flotation device effectively to be recycled, becomes two step copper concentrates, a step copper concentrate and two step copper concentrates collectively constitute merging copper concentrate,
To not only recycle coarse grain but also recycle particulate, recovery efficiency is substantially increased, the copper content in copper concentrate is also improved, that is, mentions
The high grade of copper concentrate, also reduces the grade of copper tailing.In addition, the present invention regrinds process by being added, so that ore
The uniformity that grain is sufficiently dissociated into monomer, improves ore particle, to be conducive to flotation；And it is of the invention by the way that eddy flow is used in combination
Device, vertical mill composition regrind it is closed circuit so that coarse grain can be entered cyclone overflow after constantly levigate in all rougher concentrations
In.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.
Claims (10)
1. the flotation device and flotation column of a kind of misproportion dissemination copper sulfide ore combine gradient extracting method, which is characterized in that packet
Include following steps:
S1 ore grinding: tcrude ore being crushed, ore grinding, and in grinding process plus water is prepared into ore pulp；
S2 flotation device roughing: after the pH to 8.0~8.5 of ore pulp obtained by regulating step S1, butyl xanthate and collector and frother is added
It stirs evenly, puts into flotation device and carry out roughing, obtain rougher concentration and rougher tailings；
S3 rougher concentration is regrinded: carrying out ore grinding again to the resulting rougher concentration of step S2；
S4 rougher concentration flotation column is selected:
It is selected that a flotation column is carried out in rougher concentration investment flotation column after regrinding, obtains primary cleaning concentrate and primary essence
Select tailing；
S5 primary cleaning concentrate flotation column is selected: will carry out in the resulting primary cleaning concentrate investment flotation column of step S4 secondary floating
It selects column selected, obtains recleaning chats and a step copper concentrate；
The recleaning middling recurrence repeats step S3~S5 to rougher concentration；
S6 primary cleaner tailing flotation device is selected: will once be floated in the resulting primary cleaner tailing investment flotation device of step S4
It selects machine selected, obtains primary cleaning tail concentrate and primary cleaning tail chats；
It is selected by secondary flotation machine is carried out in primary cleaning tail concentrate investment flotation device, obtain recleaning tail concentrate and two
Secondary selected tail chats；The primary cleaning tail middling recurrence to roughing forms closed cycle；
It is selected by tertiary flotation machine is carried out in recleaning tail concentrate investment flotation device, obtain two step copper concentrates and three times essence
Select tail chats；The recleaning tail middling recurrence is to the selected formation closed cycle of a flotation device；
The triple cleaning tail middling recurrence is to the selected formation closed cycle of secondary flotation machine；
S7 rougher tailings is scanned: will be carried out once purging selection in the resulting rougher tailings investment flotation device of step S2, is once swept
Select tailing and once purging selection chats；
The once purging selection tailing is put into flotation device carry out it is secondary scan, obtain copper tailing and secondary scan chats；It is described
Once purging selection middling recurrence roughing forms closed cycle；
Secondary middling recurrence to the once purging selection of scanning forms closed cycle.
2. the flotation device and flotation column of misproportion dissemination copper sulfide ore according to claim 1 combine gradient extraction side
Method, it is characterised in that: the collector and frother is any one in ethyl ammonia sulfate, EP and DY-1.
3. the flotation device and flotation column of misproportion dissemination copper sulfide ore according to claim 2 combine gradient extraction side
Method, it is characterised in that: the collector and frother is ethyl ammonia sulfate.
4. the flotation device of the misproportion dissemination copper sulfide ore described in any one and flotation column joint according to claim 1~3
Gradient extracting method, it is characterised in that: in step S1, during broken, ore grinding is at ore pulp by tcrude ore, lime is added and makees pH
Regulator and pyrite inhibitor, according to tcrude ore meter per ton, lime-crushed stone pile is 2000~3000g/t, and water is added to size mixing to mine
Ore particle mass concentration is 32~35% in slurry.
5. the flotation device of the misproportion dissemination copper sulfide ore described in any one and flotation column joint according to claim 1~3
Gradient extracting method, it is characterised in that: in step S2, continuously add lime and adjust pH values of pulp to 8.0~8.5, by raw ore per ton
Stone meter adds 15~20g/t butyl xanthate, 70~80g/t ethyl ammonia sulfate, stirs 2~3min, puts into flotation device and carries out roughing
10~12min obtains rougher concentration and rougher tailings.
6. the flotation device of the misproportion dissemination copper sulfide ore described in any one and flotation column joint according to claim 1~3
Gradient extracting method, it is characterised in that: in step S3, rougher concentration is put into cyclone and is classified, wherein cyclone overflows
Stream, which enters in flotation column, carries out that a flotation column is selected, and hydrocyclone sand is again introduced into cyclone after grinding again and is divided
Grade formation is regrinded closed circuit；During rougher concentration is regrinded, based on tcrude ore per ton, 500~700g/t of lime is added, adds water tune
Slurry ore particle mass concentration into ore pulp is 20%~25%, and pH values of pulp is 10~11.
7. the flotation device of the misproportion dissemination copper sulfide ore described in any one and flotation column joint according to claim 1~3
Gradient extracting method, it is characterised in that: in step S4, the selected condition of a flotation column is based on tcrude ore per ton, to add
Enter 400~500g/t of lime, 10~15g/t of ethyl ammonia sulfate, pH values of pulp is 11~12,6~8min of flotation time；In step S5,
The selected condition of the secondary flotation column is, based on tcrude ore per ton, 200~300g/t of lime is added, and pH values of pulp is 12~13,
6~8min of flotation time.
8. the flotation device of the misproportion dissemination copper sulfide ore described in any one and flotation column joint according to claim 1~3
Gradient extracting method, it is characterised in that: in step S6, the selected condition of a flotation device is based on tcrude ore per ton, to add
Enter 300~400g/t of lime, pH values of pulp is 11~12,6~8min of flotation time；The selected condition of the secondary flotation machine is,
Based on tcrude ore per ton, 200~300g/t of lime is added, pH values of pulp is 12~13,6~8min of flotation time；It is described to float three times
The condition for selecting machine selected is 6~8min of flotation time.
9. the flotation device of the misproportion dissemination copper sulfide ore described in any one and flotation column joint according to claim 1~3
Gradient extracting method, it is characterised in that: in step S7, the condition of the once purging selection is, based on tcrude ore per ton, addition 10~
15g/t butyl xanthate, 8~10min of flotation time；The secondary condition scanned is 10~12min of flotation time.
10. the flotation device of the misproportion dissemination copper sulfide ore described in any one and flotation column joint according to claim 1~3
Gradient extracting method, it is characterised in that: in step S1, in the ore particle that grinds, partial size is less than the total mine of ore particle Zhan of 0.075mm
The 65%~70% of grain；In step S3, in the ore particle regrinded, the 75% of ore particle Zhan total ore particle of the partial size less than 0.043mm
~80%.
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Application publication date: 20190329 |