CN106282595B - Exploitation of gold deposit and processing method - Google Patents
Exploitation of gold deposit and processing method Download PDFInfo
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- CN106282595B CN106282595B CN201610876731.1A CN201610876731A CN106282595B CN 106282595 B CN106282595 B CN 106282595B CN 201610876731 A CN201610876731 A CN 201610876731A CN 106282595 B CN106282595 B CN 106282595B
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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
- C22B11/00—Obtaining noble metals
- C22B11/08—Obtaining noble metals by cyaniding
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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
- C22B1/00—Preliminary treatment of ores or scrap
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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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/04—Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/02—Agriculture; Fishing; Mining
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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
Abstract
A kind of exploitation of gold deposit and processing method include step：A. grinding obtains gold mine raw material after exploitation gold mine；B. weight is handled for m gold mine raw material at 150 200 DEG C of temperature and the 3500kPa of gross pressure 2500, to produce the solid fossil aoxidized；C. the 3 of the solid fossil aoxidized 10% are mixed into the solid fossil for being handled and being aoxidized to produce at 150 200 DEG C of temperature and the 3500kPa of gross pressure 2500 again in the gold mine raw material that another weight is m, and repeat step c；D. carry out cyaniding 35 60 minutes to reclaim Au in the container for being 3000 6000kpa by the remaining solid fossil feeding oxygen pressure aoxidized of step b and c.What the present invention improved Au disengages rate and comprehensive production efficiency, reduces the consumption of Cymag, reduces cost, high-efficiency environment friendly.
Description
Technical field
The invention belongs to exploitation of gold deposit field, more particularly to a kind of exploitation of gold deposit and processing method.
Background technology
China's difficult-treating gold mine resource is relatively enriched, in existing explored gold geology reserves, there are about 1000 tons or so category
In difficult-treating gold mine resource, the 1/4 of proved reserves is accounted for, this kind of resource distribution extensively, is distributed in each pan province,
Larger specific gravity is occupied in the wherein western province such as Guizhou, Yunnan, Sichuan, Gansu, Qinghai, Guangxi and Shaanxi.Research both domestic and external is recognized
For, in the forming process of Very Small Au-ore primary deposit, in the gold mine forming process especially by ore-hosting fissure of sedimentary rock, carbon
Matter plays an important roll.All contain in card woods gold mine, the Dongbeizhai Gold Deposit in China Sichuan and some gold deposits in Gui Dian Golden Triangle, Guizhou Province
Higher carbonaceous and organic carbon.
Carbonaceous in gold mine mainly has three types：Solid (element) carbon, the mixture of high-molecular hydrocarbons and with
The similar organic acid of humic acids, the latter two are collectively referred to as organic carbon.Carbonaceous present in ore, it is considered that be the hydrothermal activity phase
The result of a small amount of organic matter is brought into.
The organic carbon that Carbonaceous matter in gold mine is present to Cyanide Leaching in adverse effect, ore can occur with gold-cyanide complex
Effect, thus can not be acted upon with conventional cyanidation method.
In addition, also containing sulfide in these difficult-treating gold mines, in common pressure oxidation, elementary sulfur is gone out with melt
Existing, it easily forms blocking sulphur and has affinity to gold, hampers cyaniding solution close to gold, is unfavorable for cyaniding
Gold is reclaimed, and adds the consumption of Cymag.
The gold ore resource of the explored carbon containing sulfur compound of China occupies at a relatively high ratio, base in gold industry reserves
It is western all in China on this, solve the processing problem of this difficult-treating gold mine, sustainable development and west to China's gold industry
Portion's economic development has very important effect.
In addition, Empirical study on international gold price fluctuating range is larger, this causes the economic benefit of gold manufacturing enterprises to be difficult to control to,
Under this situation, enterprise's ability to ward off risks is poor, is unfavorable for enterprise's long-term stability development.
The content of the invention
Technical scheme is proposed in order to solve at least one above mentioned problem of the prior art.
It is an object of the present invention to provide a kind of exploitation of gold deposit and processing method.The exploitation of gold deposit and processing method bag
Include following steps：
A. grinding obtains gold mine raw material after exploitation gold mine；
B. weight is handled for m gold mine raw material at 150-200 DEG C of temperature and gross pressure 2500-3500kPa, with
The solid fossil aoxidized is produced, is two parts by the solid fossil parts by weights aoxidized, a portion weight is
3-10%, remaining moiety by weight is 90-97%；
C. the 3-10% of the solid fossil aoxidized is mixed into the gold mine raw material that another weight is m again in temperature
The solid fossil aoxidized to produce is handled under 150-200 DEG C and gross pressure 2500-3500kPa, and repeats the step
c；
D. the container that the solid fossil feeding oxygen pressure remaining 90-97% of step b and c aoxidized is 3000-6000kpa
It is middle to carry out cyaniding 35-60 minutes to reclaim Au；
E. by mine tailing be further processed as particle diameter after the tailings particles between 70-150 μm with particle diameter be 0.8-2cm work
Industry slag, which is mixed, makes tailings particles uniformly be attached to industrial slag surface, then accumulates in heaps, is sprinkled with iron thiobacillus thiooxidant
With the nutritive solution of sulfolobus, Au is further reclaimed by lixivant.
Advantageously, described exploitation of gold deposit and processing method also include：
The price of gold set up in price of gold forecast model prediction following a period of time；
Obtain the history production cost in Au nearest half a year；
The produce load ratio of matching is determined according to the price of gold of prediction and history production cost；
Wherein, price of gold forecast model is preferably P=742.356+3.819X-4.929Y, wherein, P is price of gold, and unit is U.S.
Member/ounce, X is oil price, and unit is dollar/bucket, and Y is dollar index, according to oil price and dollar exponential forecasting future
Price of gold in a period of time.
According to another preferred scheme of the invention, the voidage that tailings particles and industrial slag form heap is more than or equal to
30%, to increase the circulation and radiating of air.
According to another preferred scheme of the invention, gold loaded carbon is formed by charcoal absorption gold-cyanide complex in step d and returned
Receive Au.
According to another preferred scheme of the invention, strippant isopropanol is helped to exist for 3% NaoH and 8% by mass concentration
Temperature 60-70 degree desorbs gold loaded carbon and passes through electrolytic recovery Au.
According to another preferred scheme of the invention, the gold mine raw material is the ore pulp that solid weight is 35-50%.
According to another preferred scheme of the invention, there is provided a kind of exploitation of gold deposit and processing method, it is characterised in that including with
Lower step：
A. grinding obtains gold mine raw material after exploitation gold mine；
B. weight is handled for m gold mine raw material at 150-200 DEG C of temperature and gross pressure 2500-3500kPa, with
Produce the solid fossil aoxidized；
C. the 3-10% of the solid fossil aoxidized is mixed into the gold mine raw material that another weight is m again in temperature
The solid fossil aoxidized to produce is handled under 150-200 DEG C and gross pressure 2500-3500kPa, and repeats the step
c；
D. it is progress in 3000-6000kpa container by the remaining solid fossil feeding oxygen pressure aoxidized of step b and c
Cyaniding 35-60 minutes is to reclaim Au.
According to another preferred scheme of the invention, described exploitation of gold deposit and processing method also includes：
Price of gold forecast model is set up for P=742.356+3.819X-4.929Y, wherein, P is price of gold, and unit is dollar/big belly
Department, X is oil price, and unit is dollar/bucket, and Y is dollar index, during according to oil price and following one section dollar exponential forecasting
Interior price of gold；
Obtain the history production cost in Au nearest half a year；
The produce load ratio of matching is determined between 75-100% according to the price of gold of prediction and history production cost.
According to another preferred scheme of the invention, gold loaded carbon is formed by charcoal absorption gold-cyanide complex in step d, passed through
Mass concentration helps strippant isopropanol to desorb gold loaded carbon and by electrolytic recovery in temperature 60-70 degree for 3% NaoH's and 8%
Au。
According to another preferred scheme of the invention, a kind of exploitation of gold deposit and processing method are additionally provided, it is characterised in that including
Following steps：
The solid fossil formed after gold mine raw material is aoxidized, which is continuously introduced into container, carries out cyaniding recovery Au.
Compared with prior art, the beneficial effects of the present invention are：
The scattered of elementary sulfur can be significantly facilitated by being returned to by the solid fossil for aoxidizing a part in reactor,
And the decomposition of the carbonate in gold mine raw material is promoted containing acid in the solid fossil aoxidized, thus accelerates and aoxidized
Journey, oxidation is more thorough, promotes disengaging for Au；
The 3-10% solid fossil aoxidized, while promoting Au to disengage, it is ensured that whole production system is higher
Disposal ability, comprehensive production efficiency is optimal；
Cyanogenation is carried out in oxygen presses the container for 3000-6000kpa so that the cyaniding time is less, it is therefore prevented that sulphur cyanogen
The formation of hydrochlorate, reduces the consumption of Cymag, reduces cost；
Price of gold forecast model is set up, price of gold is predicted using two factors of oil price and dollar index, optimization determines enterprise
Produce load, it is advantageously ensured that Business Economic Benefit；
Accumulated for mine tailing and biological oxidation, furthermore achieved that residual Au extraction, and the present invention accumulates
Mine tailing has optimal voidage, is conducive to accelerating biological oxidation process；
Mass concentration helps strippant isopropanol to desorb gold loaded carbon for 3% NaoH's and 8%, without using cyanide, efficiently
Environmental protection.
Brief description of the drawings
Fig. 1 is the exploitation of gold deposit and process flow schematic diagram according to a kind of preferred embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawings, the preferred forms of the present invention, specific reality here are described by preferred embodiment
The mode of applying is to explain the present invention, and should not be construed as limiting the invention, do not depart from the present invention spirit and
In the case of essential scope, various changes and modifications can be made, these should be all included within protection scope of the present invention.
Referring to Fig. 1, the invention provides a kind of exploitation of gold deposit and processing method.The exploitation of gold deposit and processing method include
Following steps：
A. grinding obtains gold mine raw material after exploitation gold mine；
B. weight is handled for m gold mine raw material at 150-200 DEG C of temperature and gross pressure 2500-3500kPa, with
The solid fossil aoxidized is produced, is two parts by the solid fossil parts by weights aoxidized, a portion weight is
3-10%, remaining moiety by weight is 90-97%.
The 3-10% solid fossil aoxidized, while Au disengages in promoting ore pulp, it is ensured that whole production system
Higher disposal ability, comprehensive production efficiency is optimal.
C. the 3-10% of the solid fossil aoxidized is mixed into the gold mine raw material that another weight is m again in temperature
The solid fossil aoxidized to produce is handled under 150-200 DEG C and gross pressure 2500-3500kPa, and repeats the step
c；
D. the container that the solid fossil feeding oxygen pressure remaining 90-97% of step b and c aoxidized is 3000-6000kpa
It is middle to carry out cyaniding 35-60 minutes to reclaim Au.Cyanogenation is carried out in oxygen presses the container for 3000-6000kpa so that cyaniding
Time is less, it is therefore prevented that the formation of rhodanate, reduces the consumption of Cymag, reduces cost；
E. by mine tailing be further processed as particle diameter after the tailings particles between 70-150 μm with particle diameter be 0.8-2cm work
Industry slag, which is mixed, makes tailings particles uniformly be attached to industrial slag surface, then accumulates in heaps, is sprinkled with iron thiobacillus thiooxidant
With the nutritive solution of sulfolobus, Au is further reclaimed by lixivant.
In the present invention, element can be significantly facilitated by being returned to by the solid fossil for aoxidizing a part in reactor
Sulphur it is scattered, and containing acid in the solid fossil aoxidized, promote the decomposition of the carbonate in gold mine raw material, thus accelerate
Oxidizing process, aoxidizes more thorough, promotes disengaging for Au.
As a kind of preferred embodiment, described exploitation of gold deposit and processing method also includes：
Price of gold forecast model is set up for P=742.356+3.819X-4.929Y, wherein, P is price of gold, and unit is dollar/big belly
Department, X is oil price, and unit is dollar/bucket, and Y is dollar index, during according to oil price and following one section dollar exponential forecasting
Interior price of gold；
Obtain the history production cost in Au nearest half a year；
The produce load ratio of matching is determined according to the price of gold of prediction and history production cost.The price of gold forecast model is most
Excellent embodiment, can optimally predict price of gold.
Advantageously, when the price of gold of prediction is more than the 115% of history production cost, full production is determined；Work as prediction
Price of gold for history production cost 115% and it is following when, it is determined that in load produce；When the price of gold of prediction is history production cost
Less than 100% when, determine that minimum load is produced, such as the load between 50-70%.It is understood that in general, going out
The period of existing minimum load production will not generally continue very long, due to price of gold reason although loss occurs in this period,
The factors such as the amortization charge with reference to production equipment, it may be determined that go out Comparatively speaking most economical lowest manufactured load, to ensure to lose
Damage and minimize, and when the loss of certain time in a cycle can be covered by the profit of other neighbouring periods, then select
Production is maintained, is otherwise stopped production.
In addition, two factors of oil price and dollar index can by the prediction data of international authoritative institution or
Some forecast models are obtained, and can take the mathematical way such as common weighted average to be handled.It is understood that except
Outside above-mentioned optimally forecast model, the forecast model of price of gold can also be other models, such as based on dollar index and oil valency
Lattice set up Vector Autoression Models VAR to predict price of gold etc..
As a kind of preferred embodiment, the voidage that tailings particles and industrial slag form heap is more than or equal to 30%, to increase
Plus the circulation and radiating of air.
As a kind of preferred embodiment, gold loaded carbon is formed by charcoal absorption gold-cyanide complex in step d and Au is reclaimed.
As a kind of preferred embodiment, strippant isopropanol is helped in temperature for 3% NaoH and 8% by mass concentration
60-70 degree desorbs gold loaded carbon and passes through electrolytic recovery Au.
As a kind of preferred embodiment, the gold mine raw material is the ore pulp that solid weight is 35-50%.
As a kind of preferred embodiment there is provided a kind of exploitation of gold deposit and processing method, it comprises the following steps：
A. grinding obtains gold mine raw material after exploitation gold mine；
B. weight is handled for m gold mine raw material at 150-200 DEG C of temperature and gross pressure 2500-3500kPa, with
Produce the solid fossil aoxidized；
C. the 3-10% of the solid fossil aoxidized is mixed into the gold mine raw material that another weight is m again in temperature
The solid fossil aoxidized to produce is handled under 150-200 DEG C and gross pressure 2500-3500kPa, and repeats the step
c；
D. it is progress in 3000-6000kpa container by the remaining solid fossil feeding oxygen pressure aoxidized of step b and c
Cyaniding 35-60 minutes is to reclaim Au.
As a kind of preferred embodiment, described exploitation of gold deposit and processing method also includes：
Price of gold forecast model is set up for P=742.356+3.819X-4.929Y, wherein, P is price of gold, and unit is dollar/big belly
Department, X is oil price, and unit is dollar/bucket, and Y is dollar index, during according to oil price and following one section dollar exponential forecasting
Interior price of gold；
Obtain the history production cost in Au nearest half a year；
The produce load ratio of matching is determined between 75-100% according to the price of gold of prediction and history production cost.
As a kind of preferred embodiment, gold loaded carbon is formed by charcoal absorption gold-cyanide complex in step d, it is dense by quality
That spends the NaoH and 8% for 3% helps strippant isopropanol to desorb gold loaded carbon and by electrolytic recovery Au in temperature 60-70 degree.
As a kind of preferred embodiment, a kind of exploitation of gold deposit and processing method are additionally provided, it is characterised in that including following step
Suddenly：
The solid fossil formed after gold mine raw material is aoxidized is continuously introduced into container of the preferred oxygen pressure for 3000-6000kpa
Au is reclaimed in middle progress cyaniding.
Embodiment 1
First, it is 35% ore pulp grinding after exploitation gold mine to be obtained into gold mine raw material, i.e. concentration；In 180 DEG C of temperature and stagnation pressure
Weight is handled for 200kg gold mine raw material under power 2600kPa, to produce the solid fossil aoxidized, the pressurised oxygen
Change process can be carried out in autoclave, and 5% (remaining 95% enters cyanation step) of the solid fossil aoxidized is returned
Return to the ore pulp in oxidation container with another 200kg to mix, handled again under 180 DEG C and gross pressure 2600kPa with life
The solid fossil that output was aoxidized, continues to return to 5% (remaining 95% enters cyanation step) of the solid fossil aoxidized
Ore pulp into oxidation container with another 200kg is mixed, so circulation.The solid fossil that remaining 95% was aoxidized sends into oxygen
Press and cyaniding 45 minutes is carried out in the container for 3500kpa, by the gold loaded carbon of above-mentioned process conditions output, obtained by desorbing electrolytic
To ingot.
Implementing technical indicator is：The oxygenation efficiency of sulphur is 97.2%, carbon removal rate 98.5%, gold leaching rate 98.1%.
Embodiment 2
First, it is 39% ore pulp grinding after exploitation gold mine to be obtained into gold mine raw material, i.e. concentration；In 150 DEG C of temperature and stagnation pressure
Weight is handled for 210kg gold mine raw material under power 2500kPa, to produce the solid fossil aoxidized, this aoxidized
The ore pulp that 3% (remaining 97% enters cyanation step) of the solid fossil crossed returns in oxidation container with another 210kg is mixed
Close, handled the solid fossil aoxidized to produce under 150 DEG C and gross pressure 2500kPa again, continuation will be aoxidized
The ore pulp that returns in oxidation container with another 210kg of 3% (remaining 97% enters cyanation step) of solid fossil mix,
So circulation.The solid fossil feeding oxygen pressure that remaining 97% was aoxidized is progress cyaniding 60 minutes in 3000kpa container,
By the gold loaded carbon of above-mentioned process conditions output, ingot is obtained by desorbing electrolytic.
Implementing technical indicator is：The oxygenation efficiency of sulphur is 97.0%, carbon removal rate 98.1%, gold leaching rate 97.9%.
Embodiment 3
First, it is 50% ore pulp grinding after exploitation gold mine to be obtained into gold mine raw material, i.e. concentration；In 200 DEG C of temperature and stagnation pressure
Weight is handled for 180kg gold mine raw material under power 3500kPa, to produce the solid fossil aoxidized, this aoxidized
The ore pulp that 10% (remaining 90% enters cyanation step) of the solid fossil crossed returns in oxidation container with another 180kg is mixed
Close, handled the solid fossil aoxidized to produce under 200 DEG C and gross pressure 3500kPa again, continuation will be aoxidized
10% (remaining 90% enters cyanation step) of solid fossil return in oxidation container and to be mixed with another 180kg ore pulp
Close, so circulation.The solid fossil feeding oxygen pressure that remaining 90% was aoxidized is 35 points of cyaniding of progress in 2500kpa container
Clock, by the gold loaded carbon of above-mentioned process conditions output, ingot is obtained by desorbing electrolytic.
Implementing technical indicator is：The oxygenation efficiency of sulphur is 97.4%, carbon removal rate 98.6%, gold leaching rate 98.2%.
Mine tailing is further processed as into particle diameter to mix and stir for 1.8cm industrial slag with particle diameter after 70 μm of tailings particles
Mixing makes tailings particles uniformly be attached to industrial slag surface, then accumulates in heaps, voidage 38%, be sprinkled with iron thiobacillus thiooxidant and
The nutritive solution of sulfolobus, Au is further reclaimed by lixivant.Or, after selecting particle diameter in 85 μm of tailings particles
With particle diameter be 2cm industrial slag when, voidage 40%.Or, it is with particle diameter after selecting particle diameter in 150 μm of tailings particles
During 0.8cm industrial slag, voidage 35%.The voidage for the mine tailing that the present invention accumulates, is conducive to accelerating biological oxidation process.
In summary, the beneficial effects of the present invention are：
The scattered of elementary sulfur can be significantly facilitated by being returned to by the solid fossil for aoxidizing a part in reactor,
And the decomposition of the carbonate in gold mine raw material is promoted containing acid in the solid fossil aoxidized, thus accelerates and aoxidized
Journey, oxidation is more thorough, promotes disengaging for Au；
The 3-10% solid fossil aoxidized, while promoting Au to disengage, it is ensured that whole production system is higher
Disposal ability, comprehensive production efficiency is optimal；
Cyanogenation is carried out in oxygen presses the container for 3000-6000kpa so that the cyaniding time is less, it is therefore prevented that sulphur cyanogen
The formation of hydrochlorate, reduces the consumption of Cymag, reduces cost；
Price of gold forecast model is set up, price of gold is predicted using two factors of oil price and dollar index, optimization determines enterprise
Produce load, it is advantageously ensured that Business Economic Benefit；
Accumulated for mine tailing and biological oxidation, furthermore achieved that residual Au extraction, and mass concentration is 3%
NaoH and 8% help strippant isopropanol desorb gold loaded carbon, without using cyanide, high-efficiency environment friendly.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art is in the technical scope of present disclosure, the change or replacement that can be readily occurred in,
It should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Enclose and be defined.
Claims (9)
1. a kind of exploitation of gold deposit and processing method, it is characterised in that comprise the following steps：
A. grinding obtains gold mine raw material after exploitation gold mine；
B. weight is handled for m gold mine raw material at 150-200 DEG C of temperature and gross pressure 2500-3500kPa, to produce
Go out the solid fossil aoxidized, be two parts by the solid fossil parts by weights that this was aoxidized, a portion weight is 3-
10%, remaining moiety by weight is 90-97%；
C. the 3-10% of the solid fossil aoxidized is mixed into the gold mine raw material that another weight is m in 150-200 DEG C of temperature
With the solid fossil that was aoxidized to produce is handled under gross pressure 2500-3500kPa, and repeat step c；
D. the solid fossil feeding oxygen remaining 90-97% of step b and c aoxidized presses to enter in the container for 3000-6000kpa
Row cyaniding 35-60 minutes is to reclaim Au；
E. by mine tailing be further processed as particle diameter after the tailings particles between 70-150 μm with particle diameter be 0.8-2cm industrial ore deposit
Slag, which is mixed, makes tailings particles uniformly be attached to industrial slag surface, then accumulates in heaps, is sprinkled with iron thiobacillus thiooxidant and sulphur
Change the nutritive solution of sliver bacterium, Au is further reclaimed by lixivant；
Wherein, the scattered of elementary sulfur is significantly facilitated by the way that the 3-10% of the solid fossil aoxidized is returned in reactor,
And the decomposition of the carbonate in gold mine raw material is promoted containing acid in the solid fossil aoxidized, thus accelerates and aoxidized
Journey, oxidation is more thorough, promotes disengaging for Au；Wherein, the oxygenation efficiency of sulphur reaches 97.2%, and carbon removal rate reaches 98.5%,
Gold leaching rate reaches 98.1%.
2. exploitation of gold deposit according to claim 1 and processing method, it is characterised in that also include：
The price of gold set up in price of gold forecast model prediction following a period of time；
Obtain the history production cost in Au nearest half a year；
The produce load ratio of matching is determined according to the price of gold of prediction and history production cost；
Wherein, price of gold forecast model is preferably P=742.356+3.819X-4.929Y, wherein, P is price of gold, unit be dollar/
Ounce, X is oil price, and unit is dollar/bucket, and Y is dollar index, following one section according to oil price and dollar exponential forecasting
Price of gold in time.
3. exploitation of gold deposit according to claim 1 and processing method, it is characterised in that tailings particles and industrial slag institute shape
Voidage in heaps is more than or equal to 30%, to increase the circulation and radiating of air.
4. exploitation of gold deposit and processing method according to claim any one of 1-3, it is characterised in that pass through activity in step d
Charcoal absorption gold-cyanide complex formation gold loaded carbon simultaneously reclaims Au.
5. exploitation of gold deposit according to claim 4 and processing method, it is characterised in that pass through the NaoH that mass concentration is 3%
The strippant isopropanol is helped to desorb gold loaded carbon and by electrolytic recovery Au in temperature 60-70 degree with 8%.
6. exploitation of gold deposit and processing method according to claim any one of 1-3, it is characterised in that the gold mine raw material is
Solid weight is 35-50% ore pulp.
7. a kind of exploitation of gold deposit and processing method, it is characterised in that comprise the following steps：
A. grinding obtains gold mine raw material after exploitation gold mine；
B. weight is handled for m gold mine raw material at 150-200 DEG C of temperature and gross pressure 2500-3500kPa, to produce
Go out the solid fossil aoxidized；
C. the 3-10% of the solid fossil aoxidized is mixed into the gold mine raw material that another weight is m in 150-200 DEG C of temperature
With the solid fossil that was aoxidized to produce is handled under gross pressure 2500-3500kPa, and repeat step c；
D. the remaining solid fossil feeding oxygen aoxidized of step b and c is pressed in the container for 3000-6000kpa and carries out cyaniding
35-60 minutes to reclaim Au；
Wherein, the scattered of elementary sulfur is significantly facilitated by the way that the 3-10% of the solid fossil aoxidized is returned in reactor,
And the decomposition of the carbonate in gold mine raw material is promoted containing acid in the solid fossil aoxidized, thus accelerates and aoxidized
Journey, oxidation is more thorough, promotes disengaging for Au；Wherein, the oxygenation efficiency of sulphur reaches 97.2%, and carbon removal rate reaches 98.5%,
Gold leaching rate reaches 98.1%.
8. exploitation of gold deposit according to claim 7 and processing method, it is characterised in that also include：
Price of gold forecast model is set up for P=742.356+3.819X-4.929Y, wherein, P is price of gold, and unit is dollar/ounce, X
For oil price, unit is dollar/bucket, and Y is dollar index, according in oil price and dollar exponential forecasting following a period of time
Price of gold；
Obtain the history production cost in Au nearest half a year；
The produce load ratio of matching is determined between 75-100% according to the price of gold of prediction and history production cost.
9. exploitation of gold deposit according to claim 8 and processing method, it is characterised in that pass through activated carbon adsorption of gold in step d
Cyano complex formation gold loaded carbon, strippant isopropanol is helped in temperature 60-70 degree by mass concentration for 3% NaoH and 8%
Desorption gold loaded carbon simultaneously passes through electrolytic recovery Au.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN101876005A (en) * | 2009-11-19 | 2010-11-03 | 中南大学 | Method for extracting aurum from difficult-to-handle sulphide ore aurum concentrate by two-segment pressurization leaching method |
| CN102134641A (en) * | 2010-11-10 | 2011-07-27 | 紫金矿业集团股份有限公司 | Gold extraction process of gold concentrate with high carbon, arsenic and sulfur |
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| CA2887675A1 (en) * | 2012-10-10 | 2014-04-17 | Karel John Osten | Gold recovery from refractory ores and concentrates |
| CN106282595B (en) * | 2016-10-08 | 2017-08-18 | 沈阳金丰石化物资贸易有限公司 | Exploitation of gold deposit and processing method |
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| CN101876005A (en) * | 2009-11-19 | 2010-11-03 | 中南大学 | Method for extracting aurum from difficult-to-handle sulphide ore aurum concentrate by two-segment pressurization leaching method |
| CN102134641A (en) * | 2010-11-10 | 2011-07-27 | 紫金矿业集团股份有限公司 | Gold extraction process of gold concentrate with high carbon, arsenic and sulfur |
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| 难处理金矿石的加压浸出技术;周绍銮;《铀矿冶》;19971130;第16卷(第4期);第237页第1段，238页第5段和240页第1段 * |
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