CN107299224A - A kind of method of copper sulfide mineral biological heap leaching system envelope heap isolation - Google Patents
A kind of method of copper sulfide mineral biological heap leaching system envelope heap isolation Download PDFInfo
- Publication number
- CN107299224A CN107299224A CN201710532251.8A CN201710532251A CN107299224A CN 107299224 A CN107299224 A CN 107299224A CN 201710532251 A CN201710532251 A CN 201710532251A CN 107299224 A CN107299224 A CN 107299224A
- Authority
- CN
- China
- Prior art keywords
- heap
- isolation
- envelope
- ore
- slag
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
-
- 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
Abstract
The invention discloses a kind of method of copper sulfide mineral biological heap leaching system envelope heap isolation, operating procedure includes：In copper sulfide mineral biological heap leaching process, according to the iron leaching content of heap leaching system and production acid amount, often leach and envelope heap isolation processing is carried out after 3~6 layers of ore, cover ore again on separation layer and carry out biological dump leaching；The terrace part of the separation layer takes the envelope heap partition method processing of " neutralizing slag+geomembrane ", side slope for subsequently no longer covering ore is spread in 10~50cm and reclaimed after slag, and for the side slope that continue to cover ore subsequently wouldn't be carried out into envelope heap isolation.The present invention while sour and concentration of iron, makes full use of neutralization slag as envelope heap isolated material, substantially increases economic benefit and environmental benefit in effectively control heap leaching system.
Description
Technical field
The present invention relates to field of hydrometallurgy, and in particular to a kind of side of copper sulfide mineral biological heap leaching system envelope heap isolation
Method.
Background technology
" biological dump leaching-Extraction electrodeposition " technique has the significant advantages such as low cost, low energy consumption, it has also become low-grade secondary
The preferred technique of copper-sulphide ores, at present, the whole world have nearly 20 mines to use the technique.China's seat of honour ton biology carries copper mine
Go into operation, this method takes full advantage of the Low grade resource that traditional handicraft is difficult by, obtain in Mixed Microbial Populations in Zijinshan Copper Mine in the end of the year 2005
Good economic benefit, its weak point is：Because ore copper content is relatively low, the permanent heap method of low cost is taken (successively to enter
Ore deposit dump leaching, leaching does not go out heap after terminating), although the leaching rate of copper is higher, but the oxidation of pyrite in the old heap of lower floor can not be obtained
To effective control, make iron leaching content and the constantly increase of production acid amount, cause environmental protection to neutralize cost and be continuously increased.
Generally using TL techniques, (ore carries out nodulizing, sulfuric acid curing and thin layer dump leaching to external copper mine biological dump leaching, leaches
Go out heap after end), there is not yet the report that heap leaching system acid and iron are accumulated；Domestic copper sulfide mineral biological dump leaching is started late, rule
Mould is smaller, less about the report of heap leaching system acid and iron control method.
The content of the invention
It is an object of the invention to provide a kind of method of copper sulfide mineral biological heap leaching system envelope heap isolation, effectively controlling
In heap leaching system while acid and concentration of iron, neutralization slag is made full use of as envelope heap isolated material, to greatly improve economic benefit
And environmental benefit.
To achieve the above object, the operating procedure of the method for a kind of copper sulfide mineral biological heap leaching system envelope heap isolation of the invention
Including：In copper sulfide mineral biological heap leaching process, according to the iron leaching content of heap leaching system and production acid amount, 3~6 layers of ore are often leached
Envelope heap isolation processing is carried out afterwards, is covered ore again on separation layer and is carried out biological dump leaching；The terrace part of the separation layer is taken
The envelope heap partition method processing of " neutralizing slag+geomembrane ", the side slope for subsequently no longer covering ore spreads 10~50cm neutralizations
Reclaimed after slag, and for the side slope that continue to cover ore subsequently wouldn't be carried out into envelope heap isolation.
The envelope heap partition method processing is that the neutralization slag that thickness is 10~50cm is first spread on platform, is spread after compacting
80~600g/m of thickness2, 0.2~2.0mm of waterproof thickness composite geo-membrane.
When the side slope is reclaimed, incorporation organic fertilizer or chemical fertilizer are modified to neutralizing slag, to supplement plant growth needs
Nutritional factors.
A kind of method of copper sulfide mineral biological heap leaching system envelope heap isolation of the present invention has following technical characterstic and beneficial effect
Really：
1st, the acid and concentration of iron of heap leaching system can effectively be controlled：Isolated by sealing heap, lower floor's copper has been leached completely
Old heap ore isolation air and water, can suppress oxidation of pyrite, reduce iron leaching content and production acid amount, make the acid and iron of heap leaching system
Concentration keeps stable.
2nd, production cost is low：Gather materials on the spot, by the use of slag is neutralized as envelope heap isolated material, reduce loess consumption and fetch earth
Expense, and using cheap, effective " neutralizing slag+geomembrane " envelope heap partition method, production cost is low.
3rd, remarkable in economical benefits：Isolated by sealing heap, greatly reduce iron leaching content and production acid amount, greatly reduce waste water
Cost is neutralized, the neutralization quantity of slag and processing cost is greatly reduced, effectively increases economic benefit.
4th, environmental benefit is good：Isolated by sealing heap, greatly reduce the neutralization quantity of slag, and make full use of in waste water and slag conduct
The material of heap isolation is sealed, neutralization slag storage capacity and disposal costs are reduced, significantly, at home and abroad mine has wide environmental benefit
Popularizing application prospect.
A kind of method of copper sulfide mineral biological heap leaching system envelope heap isolation of the present invention, is carried out using slag is neutralized to the old heap of lower floor
Heap isolation is sealed, the acid and concentration of iron of heap leaching system can be effectively controlled, is also fully utilized by neutralizing slag, reducing neutralization slag storage capacity needs
The amount of asking and disposal costs, economic benefit and environmental benefit are notable.
Brief description of the drawings
Fig. 1 is a kind of method process flow diagram of copper sulfide mineral biological heap leaching system envelope heap isolation of the invention.
Embodiment
With reference to the accompanying drawings and detailed description to a kind of copper sulfide mineral biological heap leaching system envelope heap isolation of the invention
Method is described in further detail.
As shown in figure 1, a kind of method of copper sulfide mineral biological heap leaching system envelope heap isolation of the invention comprise the following steps and
Process conditions：
It is a, broken：Copper sulfide ore is crushed to -30mm~-50mm.
B, successively enter ore deposit dump leaching：Heap is built using truck, heap is high 10~12 meters, carry out biological dump leaching, after biological dump leaching terminates,
Ore is covered, proceeds biological dump leaching；And so on, ore deposit dump leaching is successively entered.
C, envelope heap isolation：When the iron leaching content and production acid amount of heap leaching system start increased dramatically, envelope heap isolation is carried out；It is logical
In the case of often, often leach and heap isolation is once sealed after 3~6 layers of ore；Heap top platform part is using " neutralizing slag+geomembrane "
Envelope heap isolation method, first spread on platform thickness be 10~50cm neutralization slag, spread 80~600g/m after compacting2, waterproof
0.2~2.0mm of thickness geomembrane；Side slope for subsequently no longer covering ore is spread in 10~50cm and slag, passes through incorporation
Organic fertilizer or chemical fertilizer are reclaimed after being modified the necessary nutritional factors to increase plant growth needs, for will subsequently continue
The side slope of covering ore wouldn't carry out envelope heap isolation；Complete after envelope heap isolation, continue up covering ore and carry out dump leaching.
D, Extraction electrodeposition：Enter Extraction electrodeposition process, output 1 after leachate mixing#Tough cathode, raffinate is as needed
Heap leaching system is returned to, unnecessary raffinate open circuit enters neutralization step.
E, neutralization：Raffinate is neutralized to standard discharge after pH 6~9 using lime, neutralizes slag as envelope heap isolated material.
Embodiment 1：
Copper grade 0.35% in certain copper sulfide ore, pyrite content is higher (4%-8%), and copper mineral is close with pyrite
Symbiosis, the sour gangue content of consumption is low.Operating procedure is as follows：
Copper Ores are crushed to after -40mm >=85%, and heap is built using truck, and heap is high 10 meters, utilize raffinate shower-bubble type 6
Month, one layer of ore is then up covered, raffinate shower-bubble type is continued with；And so on, ore deposit dump leaching is successively entered.
Often leach and envelope heap isolation is carried out after 3 layers of ore, the method that terrace part takes " neutralizing slag+geomembrane " neutralizes slag
Thickness 30cm, spreads geomembrane (400g/m after being compacted with road roller2, waterproof thickness 1.0mm)；For subsequently no longer covering ore
Side slope spread in 30cm and slag, mix a small amount of organic fertilizer and be modified after the necessary nutritional factors to increase plant growth needs
Reclaimed, for the side slope that continue to cover ore subsequently wouldn't be carried out into envelope heap isolation.
Complete after envelope heap isolation, continue up covering ore and carry out dump leaching.
The embodiment handles 10,000,000 tons of ores every year, 6,000,000 yuan of envelope heap expense, neutralization expense 30,000,000 every year on average
Member, annual produce neutralizes 300,000 tons of slag, and envelope heap can consume 100,000 tons/year of slag of neutralization.
Embodiment 2：
Copper grade 0.35% in certain copper sulfide ore, pyrite content is higher (4%-8%), and copper mineral is close with pyrite
Symbiosis, the sour gangue content of consumption is low.Operating procedure is as follows：
Copper Ores are crushed to after -40mm >=85%, and heap is built using truck, and heap is high 10 meters, utilize raffinate shower-bubble type 6
Month, one layer of ore is then up covered, raffinate shower-bubble type is continued with；And so on, ore deposit dump leaching is successively entered.
Often leach and envelope heap isolation is carried out after 4 layers of ore, the method that terrace part takes " neutralizing slag+geomembrane " neutralizes slag
Thickness 30cm, spreads geomembrane (400g/m after being compacted with road roller2, waterproof thickness 1.0mm)；For subsequently no longer covering ore
Side slope spread in 30cm and slag, mix a small amount of organic fertilizer and be modified after the necessary nutritional factors to increase plant growth needs
Reclaimed；For the side slope that continue to cover ore subsequently wouldn't be carried out into envelope heap isolation.
Complete after envelope heap isolation, continue up covering ore and carry out dump leaching.
The embodiment handles 10,000,000 tons of ores every year, 4,500,000 yuan of envelope heap expense, neutralization expense 40,000,000 every year on average
Member, annual produce neutralizes 400,000 tons of slag, and envelope heap can consume 7.5 ten thousand tons/year of slag of neutralization.
Embodiment 3：
Copper grade 0.35% in certain copper sulfide ore, pyrite content is higher (4%-8%), and copper mineral is close with pyrite
Symbiosis, the sour gangue content of consumption is low.Operating procedure is as follows：
Copper Ores are crushed to after -40mm >=85%, and heap is built using truck, and heap is high 10 meters, utilize raffinate shower-bubble type 6
Month, one layer of ore is then up covered, raffinate shower-bubble type is continued with；And so on, ore deposit dump leaching is successively entered.
Often leach and envelope heap isolation is carried out after 6 layers of ore, the method that terrace part takes " neutralizing slag+geomembrane " neutralizes slag
Thickness 50cm, spreads geomembrane (600g/m after being compacted with road roller2, waterproof thickness 2.0mm)；For subsequently no longer covering ore
Side slope spread in 50cm and slag, mix a small amount of organic fertilizer and be modified after the necessary nutritional factors to increase plant growth needs
Reclaimed；For the side slope that continue to cover ore subsequently wouldn't be carried out into envelope heap isolation.
Complete after envelope heap isolation, continue up covering ore and carry out dump leaching.
The embodiment handles 10,000,000 tons of ores every year, 3,500,000 yuan of envelope heap expense, neutralization expense 60,000,000 every year on average
Member, annual produce neutralizes 600,000 tons of slag, and envelope heap can consume 80,000 tons/year of slag of neutralization.
Contrast three above embodiment can be seen that the comprehensive technical indexes of embodiment 1 preferably, be most preferred embodiment.
The following is example of the prior art, for the contrast with the embodiment of the present invention.
Comparative example
Copper grade 0.35% in copper sulfide ore, pyrite content is higher (4%-8%), and copper mineral is closely common with pyrite
Raw, the sour gangue content of consumption is low.Operating procedure is：Copper Ores are crushed to after -40mm >=85%, and heap is built using truck, and heap is high 10 meters,
Utilize raffinate shower-bubble type 6 months；Then one layer of ore is up covered, raffinate shower-bubble type is continued with.And so on,
Successively enter ore deposit dump leaching, envelope heap quarantine measures are not taken.
10,000,000 tons of ores of processing, 1.2 hundred million yuan of neutralization expense every year on average, produce neutralize slag 120 every year on average every year
Ten thousand tons.
By contrast as can be seen that the present invention can not only significantly reduce annual envelope heap expense and neutralization expense, and production
The raw slag that neutralizes also is greatly reduced, and neutralization slag can be made full use of to be used to seal heap, with significant economic benefit and environmental benefit.
Claims (3)
1. a kind of method of copper sulfide mineral biological heap leaching system envelope heap isolation, it is characterized in that：In copper sulfide mineral biological heap leaching process
In, according to the iron leaching content of heap leaching system and production acid amount, often leach and envelope heap isolation processing is carried out after 3~6 layers of ore, in separation layer
On cover again ore carry out biological dump leaching；The terrace part of the separation layer takes the envelope heap isolation side of " neutralizing slag+geomembrane "
Method processing, the side slope for subsequently no longer covering ore is spread in 10~50cm and reclaimed after slag, and for subsequently will be after
The side slope of continuous covering ore wouldn't carry out envelope heap isolation.
2. the method for copper sulfide mineral biological heap leaching system envelope heap isolation as claimed in claim 1, it is characterized in that：The envelope heap isolation
Method processing is that the neutralization slag that thickness is 10~50cm is first spread on platform, and 80~600g/m of thickness is spread after compacting2, waterproof
0.2~2.0mm of thickness composite geo-membrane.
3. the method for copper sulfide mineral biological heap leaching system envelope heap isolation as claimed in claim 1, it is characterized in that：The side slope is reclaimed
When, incorporation organic fertilizer or chemical fertilizer are modified to neutralizing slag, to supplement the nutritional factors of plant growth needs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710532251.8A CN107299224A (en) | 2017-07-03 | 2017-07-03 | A kind of method of copper sulfide mineral biological heap leaching system envelope heap isolation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710532251.8A CN107299224A (en) | 2017-07-03 | 2017-07-03 | A kind of method of copper sulfide mineral biological heap leaching system envelope heap isolation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107299224A true CN107299224A (en) | 2017-10-27 |
Family
ID=60136312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710532251.8A Pending CN107299224A (en) | 2017-07-03 | 2017-07-03 | A kind of method of copper sulfide mineral biological heap leaching system envelope heap isolation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107299224A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110129578A (en) * | 2019-06-06 | 2019-08-16 | 林向东 | A kind of method that Static leaching method recycles gold and silver from miberal powder |
| CN112280980A (en) * | 2020-11-09 | 2021-01-29 | 紫金矿业集团股份有限公司 | Method for regulating and controlling potential of biological heap leaching system |
| CN112371713A (en) * | 2020-10-21 | 2021-02-19 | 紫金矿业集团股份有限公司 | Method for in-situ treatment of tailings of biological heap leaching field by using copper sulfide ore flotation tailings |
| CN112522511A (en) * | 2020-11-09 | 2021-03-19 | 紫金矿业集团股份有限公司 | Waste rock recycling method for refuse dump |
| CN112958579A (en) * | 2021-01-29 | 2021-06-15 | 矿冶科技集团有限公司 | Copper ore acidic heap leaching field ecological restoration system and method |
| CN116103494A (en) * | 2023-02-23 | 2023-05-12 | 中国科学院过程工程研究所 | Method for reducing impurity ion content of leaching solution in ore heap leaching |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806454A (en) * | 2014-02-14 | 2014-05-21 | 北京矿冶研究总院 | Method for pollution control and vegetation recovery of metal sulfide ore solid waste storage yard |
-
2017
- 2017-07-03 CN CN201710532251.8A patent/CN107299224A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103806454A (en) * | 2014-02-14 | 2014-05-21 | 北京矿冶研究总院 | Method for pollution control and vegetation recovery of metal sulfide ore solid waste storage yard |
Non-Patent Citations (3)
| Title |
|---|
| 伍赠玲等: "低品位次生硫化铜矿生物柱浸试验研究", 《湿法冶金》 * |
| 刘珊珊等: "探讨矿山废弃地生态恢复治理技术-以紫金山金铜矿为例", 《低碳世界》 * |
| 温建康: "高硫低铜次生硫化铜选择性浸出研究与应用", 《中国博士学位论文全文数据库》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110129578A (en) * | 2019-06-06 | 2019-08-16 | 林向东 | A kind of method that Static leaching method recycles gold and silver from miberal powder |
| CN112371713A (en) * | 2020-10-21 | 2021-02-19 | 紫金矿业集团股份有限公司 | Method for in-situ treatment of tailings of biological heap leaching field by using copper sulfide ore flotation tailings |
| CN112280980A (en) * | 2020-11-09 | 2021-01-29 | 紫金矿业集团股份有限公司 | Method for regulating and controlling potential of biological heap leaching system |
| CN112522511A (en) * | 2020-11-09 | 2021-03-19 | 紫金矿业集团股份有限公司 | Waste rock recycling method for refuse dump |
| CN112280980B (en) * | 2020-11-09 | 2021-08-20 | 紫金矿业集团股份有限公司 | Method for regulating and controlling potential of biological heap leaching system |
| CN112522511B (en) * | 2020-11-09 | 2021-12-10 | 紫金矿业集团股份有限公司 | Waste rock recycling method for refuse dump |
| CN112958579A (en) * | 2021-01-29 | 2021-06-15 | 矿冶科技集团有限公司 | Copper ore acidic heap leaching field ecological restoration system and method |
| CN116103494A (en) * | 2023-02-23 | 2023-05-12 | 中国科学院过程工程研究所 | Method for reducing impurity ion content of leaching solution in ore heap leaching |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107299224A (en) | A kind of method of copper sulfide mineral biological heap leaching system envelope heap isolation | |
| CN101956071B (en) | Biological metallurgy mineral leaching microorganism combined bacterium fluid for copper ore and method for recycling metallic copper | |
| CN102643983B (en) | Stage-by-stage dump leaching technology for low-grade mixed copper ore | |
| CN103894281B (en) | A kind of selecting smelting combination technique processing copper sulfide zinc and zinc oxide composite ore | |
| CN107267755B (en) | A kind of method of secondary copper sulfide mineral biological dump leaching | |
| CN105714115B (en) | A kind of carbonaceous siliceous-pelitic rock type U-ore stone Bioleaching Uranium method | |
| CN103301929A (en) | Selective zinc oxide leaching and weak acidic zinc sulfide flotation smelting and selection combining process | |
| CN101736152B (en) | Acid washed ore leaching process for low-grade copper oxide ores with high mud content | |
| CN102676805B (en) | Low grade zinc concentrate associated lead and silver recovery process | |
| CN106278072A (en) | A kind of method without soil tailings | |
| CN107354298B (en) | A kind of method of the regulation of copper sulfide mineral biological heap leaching system acid and iron | |
| CN107779596A (en) | A kind of process integration for handling copper-sulphide ores | |
| Chen et al. | Implementation and practice of an integrated process to recover copper from low grade ore at Zijinshan mine | |
| CN101434918B (en) | Leaching-ore bacteria and high temperature heap bioleaching process for chalcopyrite ore by using the same | |
| CN100402677C (en) | Bacteria underground heap leaching process for copper ore | |
| CN112111644A (en) | Method for efficiently recovering gold and silver | |
| CN104745811A (en) | Acid ore washing biological leaching process used for high mud alkaline uranium ore | |
| CN112371713B (en) | Method for in-situ treatment of tailings of biological heap leaching field by using copper sulfide ore flotation tailings | |
| CN102337228B (en) | Thermoacidophile and low grade chalcopyrite ore microbe stepwise leaching process | |
| CN102643987A (en) | Method for preparing rare earth by reducing ammonia nitrogen oxygen demand (COD) and adjusting potential of hydrogen (pH) value from rare earth mine leach liquor | |
| CN112280980B (en) | Method for regulating and controlling potential of biological heap leaching system | |
| CN103157560B (en) | Flotation method of vulcanizing lead and zinc by weak acid full pulp | |
| CN113968610B (en) | Method for preparing biological flocculant by using biological iron-calcium slag in biological heap leaching | |
| CN110373549B (en) | Method for recovering rare earth from heap leaching and leaching acidolysis residue containing rare earth | |
| CN101403037A (en) | Earth's surface biological dump leaching process for secondary copper sulfide ore with higher arsenic content |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171027 |
|
| RJ01 | Rejection of invention patent application after publication |