CN108514950A - A method of improving copper-sulphide ores copper recovery - Google Patents
A method of improving copper-sulphide ores copper recovery Download PDFInfo
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- CN108514950A CN108514950A CN201810300427.1A CN201810300427A CN108514950A CN 108514950 A CN108514950 A CN 108514950A CN 201810300427 A CN201810300427 A CN 201810300427A CN 108514950 A CN108514950 A CN 108514950A
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- copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- 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
-
- 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
-
- 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
-
- 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
Abstract
The present invention provides a kind of method improving copper-sulphide ores copper recovery, it includes first carrying out Semi-Autogenous broken, screening to copper sulfide ore to divide progress dump leaching all the way, extraction, electrodeposition generation tough cathode again, another way carries out fine crushing, classification, iron concentrate, copper concentrate and tailing are selected in ball milling, flotation, it further include increase between screening and dump leaching high pressure roller be crushed, screening step again；The advanced horizontal high voltage roller of copper sulfide broken ore to screening out+70mm is crushed, sieves again, the mineral surface for separating+0.3mm has the copper sulfide broken ore of more micro-crack to enter dump leaching, extraction, electrodeposition, tough cathode is generated, high pressure roller is broken can to reduce energy consumption and cost, improve copper recovery；Copper sulfide broken ore to screening out 70mm still carries out fine crushing, classification, to qualified ore milling product ball milling, flotation, select iron concentrate, copper concentrate and tailing, have many advantages, such as that copper recovery is high, low energy consumption, less investment, there is preferable popularizing application prospect, is suitable for Copper Ores Bioleaching application.
Description
Technical field
The present invention relates to metallurgical technology fields, and in particular to a method of copper-sulphide ores copper recovery is improved, copper is suitable for
Ore biology leaches application.
Background technology
Biology carry copper technology research carry out it is more early, since 1958 Spain with bacteriogenic ferric sulphate it is molten soak it is low
Grade Copper Ores have successfully recycled copper, and up to the present, the whole world is accounted for using the amount of copper that the molten leaching method of microorganism obtains entirely adopt every year
20% or more amount of copper.The states such as Chile, the U.S., Australia build up extensive copper mineral dump leaching factory in succession.China in the eighties with
After form than more complete Bioleaching-Extraction electrodeposition technique, the known technology that uses is in biology proposes copper production at present
Semi-Autogenous broken, screening is first carried out to copper sulfide ore divides progress dump leaching all the way, extraction, electrodeposition generation tough cathode, another way again
Carry out fine crushing, classification, iron concentrate, copper concentrate and tailing are selected in ball milling, flotation, that there are ore leaching cycles is long for this method, leaches
The problems such as rate is relatively low causes ore heap leaching operation that can not complete the spray of a leaching cycle and cover heap into mine, causes tailings grade inclined
Height will cause the waste of resource if directly sealing heap.Related scholar to Copper Ores dump leaching tailings process mineralogy research shows that：
The leaching cycle of certain copper minerals is long in ore, reduces the granularity of ore and can improve the leaching rate of stockyard ore and shorten leaching
Period.For this purpose, ten thousand loyalties of domestic print et al. inquired into application of the high-pressure roller mill in non-ferrous metal ore field, high pressure roller is had studied
Particle property, Grinding dynamics characteristic and the flotation characteristic of broken lower product；It thanks to Hong Zhen et al. and has carried out high pressure for certain gold mine
Roller galls broken and dump leaching process and proposes golden experiment；Master sieve is flat, the structure construction of Liu Jianhua et al. system introduction high-pressure roller mill, work
The feature of principle, fragmentation mechanism and its protrusion, to the typical process flow of domestic and international metal mine application high-pressure roller mill,
Sorting index, simplification of flowsheet are being improved, is expanding to lower consumption etc. and has made selective analysis；Wu likes auspicious et al. with alkaline oxygenated copper
Mine dump leaching is engineering background, carries out high pressure roller ore and leaches front and rear surfaces micromorphology evolution experimental study.External brilliant bright doctor
Differentiation and the developing history for describing high-pressure roller mill imitate the leaching of gold for its Cracking Mechanism, using advantage, internal microgap
Fruit carried out introduction；Phanindra Kodali et al. utilize high pressure roller mill breaking ores, have carried out the column leaching test of oxidation；
Y.Ghorbania et al. describes the infiltration of the advantages of high pressure roller breaking ores generate micro-crack and leaching agent in ore and asks
Topic, has carried out the leaching test of different crumbling methods for zinc ore, has had studied the micro-crack of different leaching stage mineral surfaces
Situation.High pressure roller mill was at home and abroad applied on more nonferrous metal mine in recent years, such as U.S. Cyprus
Sierrita copper mines, South Africa Northam Platinum companies etc., domestic Shaanxi Jinduicheng Molybdenum Industry Corp, Zijin Mining share have
Limit company etc..
In conclusion forefathers are concentrated mainly on cement, coal and all kinds of nonmetallic minerals for the application and research of high pressure roller
Crushing on, in iron ore, manganese ore, pelletizing industry, also have nonferrous metals ore and all kinds of metallic ores application study simultaneously
It proposes " much broken and lessmill ", the viewpoint of " being ground with broken generation " increases follow-up grinding capacity, enhancing to improve the crush efficiency of material
Ore dissociation improves the rate of recovery, but there are no in disclosed document report that generate copper sulfide ore for high pressure roller micro-
Crackle improves the report of the influence related fields of Copper Ores Bioleaching rate.
Therefore, a kind of method improving copper-sulphide ores copper recovery using high pressure roller of research and development just seems meaningful.
Invention content
The task of the present invention is in order to overcome the shortcomings of existing method, a kind of side for improving copper-sulphide ores copper recovery is provided
Method.
The task of the present invention is by the following technical programs to complete：
A method of copper-sulphide ores copper recovery being improved, it includes that Semi-Autogenous broken, sieve is first carried out to copper sulfide ore
Point divide again carry out dump leaching all the way, extraction, electrodeposition generate tough cathode, another way carries out that fine crushing, classification, ball milling, that sulphur is selected in flotation is smart
Mine, copper concentrate and tailing, it further includes increasing that high pressure roller is broken, screening step again between screening and dump leaching；To screen out+
The advanced horizontal high voltage roller of copper sulfide broken ore of 70mm is broken, sieves again, and the mineral surface for separating+0.3mm has more micro-crack
Copper sulfide broken ore enters dump leaching, extraction, electrodeposition, generates tough cathode, and high pressure roller is broken can to reduce energy consumption and cost, improve copper and return
Yield；Copper sulfide broken ore to screening out -70mm still carries out fine crushing, classification, to qualified ore milling product ball milling, flotation, choosing
Go out iron concentrate, copper concentrate and tailing.
Compared with the prior art, the present invention has the following advantages and effect：
1. biological dump leaching copper leaching rate is high, up to 85%；
2. high pressure roller fine fraction ore, which enters after mill floats system, can significantly reduce ore grinding energy consumption and just consumption；
3. less investment has preferable popularizing application prospect.
Description of the drawings
Fig. 1 is prior art copper recovery process flow chart.
Fig. 2 is according to a kind of process flow chart for the method improving copper-sulphide ores copper recovery proposed by the present invention.
Explanation is described in further detail below in conjunction with attached drawing.
Specific implementation mode
Referring to Fig.1, conventional copper recovery process flow is first to carry out Semi-Autogenous broken, screening to copper sulfide ore again to divide all the way
Carry out dump leaching, extraction, electrodeposition generate tough cathode, another way carries out fine crushing, classification, iron concentrate is selected in ball milling, flotation, copper concentrate and
Tailing.
As shown in Fig. 2, a kind of method improving copper-sulphide ores copper recovery, it includes that half is first carried out to copper sulfide ore certainly
Gall broken, screening divides progress dump leaching all the way, extraction, electrodeposition to generate tough cathode again, and another way carries out fine crushing, classification, ball milling, flotation
Iron concentrate, copper concentrate and tailing are selected, it further includes increasing that high pressure roller is broken, screening step again between screening and dump leaching；It is right
The advanced horizontal high voltage roller of copper sulfide broken ore that screens out+70mm is broken, sieves again, separate+0.3mm mineral surface have it is more micro-
The copper sulfide broken ore of crackle enters dump leaching, extraction, electrodeposition, generates tough cathode, high pressure roller is broken can to reduce energy consumption and cost, carry
High copper recovery；Copper sulfide broken ore to screening out -70mm still carries out fine crushing, classification, to qualified ore milling product ball milling, floating
Choosing, selects iron concentrate, copper concentrate and tailing.
A kind of method of raising copper-sulphide ores copper recovery of the present invention may furthermore is that：
The step high pressure roller is broken, sieve again separate -0.3mm copper sulfide broken ore be classified, qualified ore grinding production
Product carry out flotation again, select iron concentrate, copper concentrate and tailing.
The step is classified unqualified ore milling product and carries out ball milling, is milled to qualified ore milling product and carries out flotation again, selects sulphur
Concentrate, copper concentrate and tailing.
The percentage occurred in application documents is mass percent.
Table 1 is ore routinely broken and high pressure roller disrupted sample specific surface area (BET) and pore volume (BJH) analysis result
The table of comparisons.Show Copper Ores after high pressure roller is broken, the specific surface area and pore volume of mineral are more conventional broken big, in surface energy
More micro-crack is formed, to be conducive to being in direct contact for spray liquid and mineral surfaces.
1 ore BET of table and the BJH test result tables of comparisons
The present invention is described in further details with reference to specific embodiment.
Embodiment 1, Copper Ores come from Fujian somewhere, and Cu grades are 0.424%, mainly with alpha chalcocite, covellite, sulphur arsenic
The copper-sulphide ores form such as copper mine exists.According to 4.5 ten thousand tons/d of total productive capacity, wherein 1.2 ten thousand tons/d of dump leaching production capacity, flotation
3.3 ten thousand tons/d of production capacity carries out the rate of recovery and ton mine benefit estimation to common process and present invention process.
Tcrude ore (＜ 300mm) is sieved after Semi-Autogenous in common process, and sieving lower ore, (- 70mm, Cu grade is
0.44%) through fine crushing, ore grinding, floatation process production copper concentrate and iron concentrate.(0.38%)+70mm, Cu grade are to hard rock on sieve
The a height of 6m of biological dump leaching, heap is directly carried out with Automobile Transportation mode, period of heap leaching is 3 months, spraying intensity 30L/hm2,
Leachate recycles, and copper-rich liquid produces Cu-CATH-1 using conventional extraction, electrodeposition process.
Using present invention process, tcrude ore (＜ 300mm) is sieved after Semi-Autogenous, and sieving lower ore, (- 70mm, Cu grade is
0.44%) through fine crushing, ore grinding, floatation process production copper concentrate and iron concentrate.(0.38%)+70mm, Cu grade are to hard rock on sieve
It is sieved after high pressure roller is broken, (+0.3mm, Cu grade are 0.37%) to carry out biological dump leaching, heap height with Automobile Transportation mode to coarse grain
For 6m, period of heap leaching is 3 months, spraying intensity 30L/hm2, leachate cycle, copper-rich liquid using conventional extraction, electrodeposition work
Skill produces Cu-CATH-1.(- 0.3mm, Cu grade are 0.48%) to enter grinding flotation system production copper concentrate and sulphur essence to particulate
Mine.
Table 2,3 is respectively the rate of recovery of common process and present invention process, the control of ton mine economic benefit.
2 copper recovery of table compares
3 tons of mine economic benefit controls of table
Process copper-sulphide ores using the present invention known to from table 2,3, biological dump leaching operation copper leaching rate improve
10%, biology carries copper overall recovery and accordingly improves 9%, and copper overall recovery accordingly improves 2.17%, and ton mine benefit accordingly improves
1.53 first.
Embodiment 2, Copper Ores come from Fujian somewhere, and Cu grades are 0.326%, mainly with alpha chalcocite, covellite, sulphur arsenic
The copper-sulphide ores form such as copper mine exists.According to 4.5 ten thousand tons/d of total productive capacity, wherein 1.2 ten thousand tons/d of dump leaching production capacity, flotation
3.3 ten thousand tons/d of production capacity carries out the rate of recovery and ton mine benefit estimation to common process and present invention process.
Tcrude ore (＜ 300mm) is sieved after Semi-Autogenous in common process, and sieving lower ore, (- 70mm, Cu grade is
0.36%) through fine crushing, ore grinding, floatation process production copper concentrate and iron concentrate.(0.23%)+70mm, Cu grade are to hard rock on sieve
The a height of 6m of biological dump leaching, heap is directly carried out with Automobile Transportation mode, period of heap leaching is 3 months, spraying intensity 30L/hm2,
Leachate recycles, and copper-rich liquid produces Cu-CATH-1 using conventional extraction, electrodeposition process.
Using present invention process, tcrude ore (＜ 300mm) is sieved after Semi-Autogenous, and sieving lower ore, (- 70mm, Cu grade is
0.36%) through fine crushing, ore grinding, floatation process production copper concentrate and iron concentrate.(0.23%)+70mm, Cu grade are to hard rock on sieve
It is sieved after high pressure roller is broken, (+0.3mm, Cu grade are 0.22%) to carry out biological dump leaching, heap height with Automobile Transportation mode to coarse grain
For 6m, period of heap leaching is 3 months, spraying intensity 30L/hm2, leachate cycle, copper-rich liquid using conventional extraction, electrodeposition work
Skill produces Cu-CATH-1.(- 0.3mm, Cu grade are 0.38%) to enter grinding flotation system production copper concentrate and sulphur essence to particulate
Mine.
Table 4,5 is respectively the rate of recovery of common process and present invention process, the control of ton mine economic benefit.
4 copper recovery of table compares
5 tons of mine economic benefit controls of table
Process copper-sulphide ores using the present invention known to from table 4,5, biological dump leaching operation copper leaching rate improve
8%, biology carries copper overall recovery and accordingly improves 7.2%, and copper overall recovery accordingly improves 1.11%, and ton mine benefit accordingly improves
0.15 yuan.
Embodiment 3, Copper Ores come from Inner Mongol somewhere, and Cu grades are 0.508%, mainly with vitreous copper and chalcopyrite
Equal copper-sulphide ores form exists.According to 4.5 ten thousand tons/d of total productive capacity, wherein 1.2 ten thousand tons/d of dump leaching production capacity, flotation production
3.3 ten thousand tons/d of ability carries out the rate of recovery and ton mine benefit estimation to common process and present invention process.
Tcrude ore (＜ 300mm) is sieved after Semi-Autogenous in common process, and sieving lower ore, (- 70mm, Cu grade is
0.53%) through fine crushing, ore grinding, floatation process production copper concentrate and iron concentrate.(0.448%)+70mm, Cu grade are to hard rock on sieve
The a height of 6m of biological dump leaching, heap is directly carried out with Automobile Transportation mode, period of heap leaching is 3 months, spraying intensity 30L/hm2,
Leachate recycles, and copper-rich liquid produces Cu-CATH-1 using conventional extraction, electrodeposition process.
Using present invention process, tcrude ore (＜ 300mm) is sieved after Semi-Autogenous, and sieving lower ore, (- 70mm, Cu grade is
0.53%) through fine crushing, ore grinding, floatation process production copper concentrate and iron concentrate.(0.448%)+70mm, Cu grade are to hard rock on sieve
It is sieved after high pressure roller is broken, (+0.3mm, Cu grade are 0.42%) to carry out biological dump leaching, heap height with Automobile Transportation mode to coarse grain
For 6m, period of heap leaching is 3 months, spraying intensity 30L/hm2, leachate cycle, copper-rich liquid using conventional extraction, electrodeposition work
Skill produces Cu-CATH-1.(- 0.3mm, Cu grade are 0.58%) to enter grinding flotation system production copper concentrate and sulphur essence to particulate
Mine.
Table 6,7 is respectively the rate of recovery of common process and present invention process, the control of ton mine economic benefit.
6 copper recovery of table compares
7 tons of mine economic benefit controls of table
Process copper-sulphide ores using the present invention known to from table 6,7, biological dump leaching operation copper leaching rate improve
12%, biology carries copper overall recovery and accordingly improves 10.8%, and copper overall recovery accordingly improves 1.97%, and ton mine benefit accordingly improves
1.77 first.
As described above, the present invention can be better realized.Above-described embodiment is only the best embodiment of the present invention, but this
The embodiment of invention is simultaneously not restricted to the described embodiments, what other were done without departing from the spirit and principles of the present invention
Change, modification, replace, combination, simplify, should be equivalent substitute mode, be included in protection scope of the present invention.
Claims (3)
1. a kind of method improving copper-sulphide ores copper recovery, it includes that Semi-Autogenous broken, screening is first carried out to copper sulfide ore
Divide again carry out dump leaching all the way, extraction, electrodeposition generate tough cathode, another way carries out fine crushing, classification, iron concentrate is selected in ball milling, flotation,
Copper concentrate and tailing, it is characterised in that it further includes increasing that high pressure roller is broken, screening step again between screening and dump leaching；To sieve
The advanced horizontal high voltage roller of copper sulfide broken ore for separating+70mm is crushed, sieves again, and the mineral surface for separating+0.3mm has more fine fisssure
The copper sulfide broken ore of line enters dump leaching, extraction, electrodeposition, generates tough cathode, high pressure roller is broken can to reduce energy consumption and cost, improve
Copper recovery；Copper sulfide broken ore to screening out -70mm still carries out fine crushing, classification, to qualified ore milling product ball milling, floating
Choosing, selects iron concentrate, copper concentrate and tailing.
2. according to the method described in claim 1, it is characterized in that the step high pressure roller is broken, sieves the sulphur for separating -0.3mm again
Change copper broken ore is classified, qualified ore milling product carries out flotation again, selects iron concentrate, copper concentrate and tailing.
3. method according to claim 1 or 2, it is characterized in that the step, which is classified unqualified ore milling product, carries out ball milling,
It is milled to qualified ore milling product and carries out flotation again, select iron concentrate, copper concentrate and tailing.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109847907A (en) * | 2019-02-21 | 2019-06-07 | 中冶北方（大连）工程技术有限公司 | A kind of closed circuit screening high pressure roller mill pre-selection technique of autogenous grinding half |
| CN109971944A (en) * | 2019-04-19 | 2019-07-05 | 紫金矿业集团股份有限公司 | From the method for low-grade secondary copper sulfide mineral high efficiente callback copper |
| CN110195157A (en) * | 2019-07-05 | 2019-09-03 | 福州大学 | Low Grade Copper Ore briquetting-the biological dump leaching process crushed based on high-pressure roller mill |
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| CN107779596A (en) * | 2017-11-08 | 2018-03-09 | 紫金矿业集团股份有限公司 | A kind of process integration for handling copper-sulphide ores |
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| CN103184334A (en) * | 2011-12-30 | 2013-07-03 | 北京有色金属研究总院 | Selection-smelting combined technology for treating mixed ore containing molybdenum, oxygen, sulfur and copper |
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Application publication date: 20180911 |