CN108118147A - A kind of two sections of extract technologies of oxygen-sulfur mixed copper ore - Google Patents
A kind of two sections of extract technologies of oxygen-sulfur mixed copper ore Download PDFInfo
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- CN108118147A CN108118147A CN201611079200.6A CN201611079200A CN108118147A CN 108118147 A CN108118147 A CN 108118147A CN 201611079200 A CN201611079200 A CN 201611079200A CN 108118147 A CN108118147 A CN 108118147A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/244—Binding; Briquetting ; Granulating with binders organic
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
- C22B15/0065—Leaching or slurrying
- C22B15/0067—Leaching or slurrying with acids or salts thereof
- C22B15/0071—Leaching or slurrying with acids or salts thereof containing sulfur
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/18—Extraction of metal compounds from ores or concentrates by wet processes with the aid of microorganisms or enzymes, e.g. bacteria or algae
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
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- Manufacturing & Machinery (AREA)
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- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Biochemistry (AREA)
- Biotechnology (AREA)
- Microbiology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of two sections of extract technologies of oxygen-sulfur mixed copper ore, it is realized by following steps：1) crushing raw ore is to 100 mesh；2) leaching：Ore after broken ore grinding is mixed to carry out leaching in proportion with sulfuric acid；3) phase analysis granulation and curing：Compound binding agent is proportionally added into after phase analysis filtering, is pelletized in drum pelletizer, granule obtained cures；4) granule builds heap；5) biological dump leaching：Bacterium solution is accessed by certain spray (or drop leaching) system spray (or drop leaching) after adjusting pH, when the copper ion concentration in leachate reaches a certain concentration, takes out qualified leachate.The present invention is a kind of technique that can comprehensively utilize oxygen-sulfur mixed copper ore stone, can recycle the copper in oxide ore and sulphide ore step by step, has the characteristics that copper leaching rate is high, comprehensively utilizes mine resources, is good in economic efficiency.
Description
Technical field
The invention belongs to biological metallurgy technical fields, are related to a kind of two sections of extract technologies of oxygen-sulfur mixed copper ore, are particularly
A kind of leaching for comprehensively utilizing oxygen-sulfur mixed copper ore and granulation biological dump leaching process.
Background technology
Copper is the metallics of a kind of great economic value and industrial value, and importance can not be replaced in national economy
Generation.China is to find earliest in the world and one of ancient civilized country using copper, but China's copper ore resource total amount is few, of poor quality,
It is embodied in that lean ore is more, rich ore is few, average grade is low.The method of extraction copper can substantially be divided into two classes at present：First, pyrogenic process
It smelts；Second is that hydrometallurgy.There is the problems such as investment is big, equipment cost is high, seriously polluted in pyrometallurgical smelting, especially set on basis
The remote districts of difference are applied, traditional pyrometallurgical smelting can not cost-effective recycling copper ore resource.Hydrometallurgy such as oxygen pressure leaching
The problem of techniques are big equally there are equipment investment with pyrometallurgical smelting, and maintenance cost is high such as go out, conventional leaching again cannot be very
The good copper recycled in sulfide mineral.Therefore, for oxygen-sulfur mixed copper ore, seeking a kind of economic, environmental protection method is
The problem of having been a concern.
The content of the invention
The object of the present invention is to provide a kind of two sections of extract technologies of oxygen-sulfur mixed copper ore, which is different from traditional wet
Method extract technology, its main feature is that being divided to two sections of progress, first segment recycles the copper in oxide ore by sulfuric acid leaching, and second segment will
The copper in granule progress biological dump leaching recycling sulphide ore is made in acid leaching residue, has high copper leaching rate, comprehensive utilization mine resources, passes through
It helps the features such as profitable.
In order to achieve the above objectives, the present invention takes following technical scheme：
A kind of two sections of extract technologies of oxygen-sulfur mixed copper ore, it comprises the following steps：
(1) crushing raw ore：Oxysulphied ore deposit is crushed into ore grinding；
(2) leaching：Ore pulp after broken ore grinding is mixed to carry out leaching in proportion with sulfuric acid；
(3) phase analysis granulation and curing：Compound binding agent is proportionally added into after phase analysis filtering, is made in drum pelletizer
Grain, granule obtained cure；
(4) granule builds heap；
(5) biological dump leaching：Bacterium solution is accessed by certain spray (or drop leaching) system spray (or drop leaching) after adjusting pH, works as leaching
When the copper ion concentration gone out in liquid reaches a certain concentration, qualified leachate is taken out.
For the copper grade of oxysulphied ore deposit described in step (1) between 0.5%~10%, oxysulphied ore deposit crushes ore grinding
Granularity is -100 mesh.
Leaching described in step (2) is to stir the ore pulp of broken milled according to a certain percentage with water, sulfuric acid
It mixes and leaching is stirred in slot.
Leaching pulp density described in step (2) is between 10%-35%, sulfuric acid concentration 50-500g/L.
Phase analysis granulation described in step (3) is will to add compound binding agent in cylinder after the phase analysis filtering in step (2)
Granule is formed in granulator.
The compound binding agent that phase analysis granulation described in step (3) uses is carboxymethyl cellulose and polyacrylamide, is glued
Tie the 0.1%-5% that agent dosage is phase analysis quality, the ratio of carboxymethyl cellulose and polyacrylamide is 1:1~10:1.
A diameter of 5~the 50mm of granule that phase analysis described in step (3) is pelletized.
Curing described in step (3) is to dry granule obtained, and hardening time is 24~72h, and granule moisture content is 5
Between~10%.
It is that granule is built heap, the high 1~4m of heap, heap length and the wide foundation of heap using belt that granule described in step (4), which builds heap,
Depending on site condition.
Biological dump leaching described in step (5), spray (or drop leaching) intensity is 5~20L/ ㎡ h, when spraying (or drop leaching)
Between for 1~for 24 hours/d, spray (or drop leaching) 30~180d of cycle.
Biological dump leaching described in step (5), spray liquid is using sulphur acid for adjusting pH between 1.5~2.5.
The entitled Reteck TS- II of bacterium solution used in biological dump leaching described in step (5) are
Acidithiobacillus ferrooxidans, Leptospirillum ferriphilum and Ferroplasma
The mixed culture of acidiphilum, deposit number CGMCC：8337, depositary institution：Chinese microorganism strain preservation management
Committee's common micro-organisms center, address are：Yard 1, BeiChen xi Road, Chaoyang District, Beijing City 3, Chinese Academy of Sciences's microbe research
Institute, preservation date：On October 15th, 2013.
In biological heap leaching process described in step (5) when copper ion concentration reaches 1~3g/L in leachate, it will leach
Liquid takes out.
The beneficial effects of the present invention are：
The present invention provides a kind of two sections of extract technologies of oxygen-sulfur mixed copper ore, which is divided to two sections of progress, and first segment passes through
Acid leaching residue is made granule and carried out in biological dump leaching recycling sulphide ore by the copper in sulfuric acid leaching recycling oxide ore, second segment
Copper so that the technique has the characteristics that copper leaching rate is high, comprehensively utilizes mine resources, is good in economic efficiency.
Description of the drawings
Fig. 1 is the process flow chart of the present invention.
Specific embodiment
As shown in Figure 1, the present invention is progress sulfuric acid leaching after oxygen-sulfur mixed copper ore is crushed, acid leaching residue is after filtering
Addition binding agent is pelletized in drum pelletizer, is built heap using belt after the granule curing of gained, is carried out using leaching microbacteria
Dump leaching.
The present invention will be further described with reference to embodiments
Embodiment 1
The technique is used for Tibet Autonomous Region's oxygen-sulfur mixed copper ore, and cupric 2.63% in ore, the sample ore essential element contains
Amount is shown in Table 1, and copper material phase analysis is shown in Table 2.
The chemical multielement analysis result of table 1
| Element term | Cu | Pb | Zn | S | Fe | As |
| Percentage composition/% | 2.67 | 0.011 | 0.016 | 23.04 | 26.65 | <0.005 |
| Element term | SiO2 | Ca | Mg | Al2O3 | Mo | |
| Percentage composition/% | 27.71 | 1.90 | 0.30 | 6.93 | 0.0094 |
The material phase analysis result of 2 bronze medal of table
| Free copper oxide | Secondary copper sulfide | Chalcopyrite | With reference to copper oxide | Total amount | |
| Content (%) | 1.91 | 0.48 | 0.23 | 0.010 | 2.63 |
| Occupation rate (%) | 72.62 | 18.25 | 8.75 | 0.38 | 100 |
Two sections of leaching flows of above-mentioned ore are comprised the following steps, as shown in Figure 1：
(1) sample ore crushes ore grinding
The sample ore is crushed into ore grinding to -100 mesh.
(2) sulfuric acid leaching
It is 30% that the ore pulp for being milled to -100 mesh, which is sized mixing to pulp density, first, is then pumped into tank diameter, according to 150g/
The dosage addition sulfuric acid of L, mixing time 2h, temperature are controlled at 60 DEG C.
(3) granulation cures
Acid leaching residue in step (2) is filtered, is added according to the 1.5% of slag weight and checks binding agent, in compound binding agent
The ratio of carboxymethyl cellulose and polyacrylamide is 1:1, pelletized using drum pelletizer, gained granule diameter 5-35mm it
Between, when granule curing 24 is small.
(4) heap is built
Heap machine is built using belt, and granule obtained is built into heap, the high 2m of heap, long and wide respectively 10m.
(5) biological dump leaching
It is 1.8 to adjust spray liquid pH using sulfuric acid, accesses 10% ore leaching bacteria Reteck TS- II, spraying intensity 10L/
㎡ h, spray time 12h/d spray cycle 150d, when copper ion concentration reaches 1.5g/L in solution, solution are taken out.
Conclusion：The sample ore, first segment stirring leaching are handled using a kind of two sections of extract technologies of oxygen-sulfur mixed copper ore of the present invention
70.89% can be reached by going out copper leaching rate, and second segment biological dump leaching copper leaching rate is 23.45%, and comprehensive leaching rate is reachable
94.34%.
Claims (10)
1. a kind of two sections of extract technologies of oxygen-sulfur mixed copper ore, it is characterised in that：It includes：
1) crushing raw ore：Oxysulphied ore deposit is crushed into ore grinding；
2) leaching：Ore pulp after broken ore grinding is mixed to carry out leaching in proportion with sulfuric acid；
3) phase analysis granulation and curing：Compound binding agent is proportionally added into after phase analysis filtering, is pelletized in drum pelletizer, is made
The granule obtained cures；
4) granule builds heap：Granule is built into heap using belt, the high 1~4m of heap, heap length and heap are wide according to depending on site condition；
5) biological dump leaching：Bacterium solution is accessed by certain spray or drop leaching system spray or drop leaching after adjusting pH, when in leachate
When copper ion concentration reaches a certain concentration, qualified leachate is taken out.
2. two sections of extract technologies of oxygen-sulfur mixed copper ore according to claim 1, it is characterised in that：Described in step (1)
Oxysulphied ore deposit copper grade between 0.5%~10%, oxysulphied ore deposit crushes grinding particle size as -100 mesh.
3. two sections of extract technologies of oxygen-sulfur mixed copper ore according to claim 1, it is characterised in that：Described in step (2)
Leaching be that the ore pulp of broken milled and water, sulfuric acid are stirred leaching in tank diameter according to a certain percentage, stir
It mixes and leaches pulp density between 10%-35%, sulfuric acid concentration 50-500g/L.
4. two sections of extract technologies of oxygen-sulfur mixed copper ore according to claim 1, it is characterised in that：Described in step (3)
Phase analysis granulation be by step (2) phase analysis filtering after addition compound binding agent granule is formed in drum pelletizer.
5. two sections of extract technologies of oxygen-sulfur mixed copper ore according to claim 1, it is characterised in that：Described in step (3)
The phase analysis compound binding agent that uses of granulation be carboxymethyl cellulose and polyacrylamide, consumption of binder is phase analysis quality
The ratio of 0.1%-5%, carboxymethyl cellulose and polyacrylamide is 1:1~10:1.
6. two sections of extract technologies of oxygen-sulfur mixed copper ore according to claim 1, it is characterised in that：Described in step (3)
The a diameter of 5~50mm of granule that pelletizes of phase analysis.
7. two sections of extract technologies of oxygen-sulfur mixed copper ore according to claim 1, it is characterised in that：Described in step (3)
Curing be to dry granule obtained, hardening time be 24~72h, granule moisture content is between 5~10%.
8. two sections of extract technologies of oxygen-sulfur mixed copper ore according to claim 1, it is characterised in that：Described in step (5)
Biological dump leaching, spray liquid using sulphur acid for adjusting pH between 1.5~2.5, spray or drop leaching intensity be 5~20L/ ㎡ h, spray
Leaching or drop leaching time are 1~for 24 hours/d, spray (or drop leaching) 30~180d of cycle.
9. two sections of extract technologies of oxygen-sulfur mixed copper ore according to claim 1, it is characterised in that：Described in step (5)
Biological dump leaching in the entitled Reteck TS- II of bacterium solution that use, be Acidithiobacillus ferrooxidans,
The mixed culture of Leptospirillum ferriphilum and Ferroplasma acidiphilum, deposit number are
CGMCC：8337, depositary institution：China Committee for Culture Collection of Microorganisms's common micro-organisms center, address are：Beijing
The institute 3 of Chaoyang District North Star West Road 1, Institute of Microorganism, Academia Sinica, preservation date：On October 15th, 2013.
10. two sections of extract technologies of oxygen-sulfur mixed copper ore according to claim 1, it is characterised in that：Described in step (5)
Biological heap leaching process in when copper ion concentration reaches 1~3g/L in leachate, leachate is taken out.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195154A (en) * | 2019-06-18 | 2019-09-03 | 中国科学院过程工程研究所 | A kind of mercury tailing forming method for dump leaching |
| CN111041191A (en) * | 2019-12-12 | 2020-04-21 | 云南大学 | Roasting leaching process for lead-zinc ore tailings |
| CN112210670A (en) * | 2020-09-11 | 2021-01-12 | 湖南埃格环保科技有限公司 | Method for extracting metal copper from copper-containing sludge of circuit board |
| CN116043014A (en) * | 2023-02-09 | 2023-05-02 | 中国科学院过程工程研究所 | Method for combined leaching of ores |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110195154A (en) * | 2019-06-18 | 2019-09-03 | 中国科学院过程工程研究所 | A kind of mercury tailing forming method for dump leaching |
| CN111041191A (en) * | 2019-12-12 | 2020-04-21 | 云南大学 | Roasting leaching process for lead-zinc ore tailings |
| CN112210670A (en) * | 2020-09-11 | 2021-01-12 | 湖南埃格环保科技有限公司 | Method for extracting metal copper from copper-containing sludge of circuit board |
| CN116043014A (en) * | 2023-02-09 | 2023-05-02 | 中国科学院过程工程研究所 | Method for combined leaching of ores |
| CN116043014B (en) * | 2023-02-09 | 2024-05-28 | 中国科学院过程工程研究所 | Method for combined leaching of ores |
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