CN101092873A - Fluctuant dissolving dipping mining method - Google Patents
Fluctuant dissolving dipping mining method Download PDFInfo
- Publication number
- CN101092873A CN101092873A CN 200710052819 CN200710052819A CN101092873A CN 101092873 A CN101092873 A CN 101092873A CN 200710052819 CN200710052819 CN 200710052819 CN 200710052819 A CN200710052819 A CN 200710052819A CN 101092873 A CN101092873 A CN 101092873A
- Authority
- CN
- China
- Prior art keywords
- well
- fluid
- ore bed
- gas
- pressure
- 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.)
- Granted
Links
Images
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
This invention discloses a wave dipping mining method including the following steps: 1, mixing a liquid containing a dissolving solvent and gas to form high-pressure shrinkage gas-liquid mixed fluid to be injected into seam via an injection well, 2, fluctuating the pressure of the seam continuously by rising and reducing pressure of the injection well and a collection well, 3, collecting solvent liquid with minerals from the injection well or the collection well, 4, repeating the above steps till the mineral concentration got from dissolving is lower than economic exploitation.
Description
Technical field
The present invention relates to a kind of mining codes, relate in particular to a kind of fluctuant dissolving dipping mining method, be widely used in the production by dissolving and leaching process field of mineral such as uranium, copper, gold, rare earth, zinc based on miscible (mixing) characteristic of gas-liquid and pressure oscillation.
Background technology
Traditional in-situ leaching mining codes are to apply certain constant pressure at the injection well to inject leachant, leachant generates leaching solution with some mineral generation physics, chemical reaction in ore bed, and in producing well, directly extract leaching solution, obtain valuable mineral by leaching solution.Recovery ratio and the speed of gathering are the important indicators of solution mining, are to weigh the index that improves resource utilization, also are important evidence weighing the production by dissolving and leaching process situation.The relative position that injects well and producing well directly has influence on the molten scope and the molten intensity of soaking of soaking of leachant, and the distributing position difference of drilling well causes different molten scope and the molten intensity of soaking of soaking; Geotechnical body is a material heterogeneous simultaneously, because cutting rock mass such as crack, solution cavity form various rock mass heterogeneous and sillar, has caused the advantage flow region and the advantage flow channel of various kinds.The leachant that conventional method is injected mainly directly enters producing well by advantage flow region and advantage flow channel.Leachant influences being limited in scope of ore bed, and the relatively little permeable areas in the ore bed, leachant flows slowly or does not flow, and forms in " the molten dead band of soaking " or " dead angle ".
As Fig. 1 (the production fluid flow schematic diagram under the mobility status that has superiority), under the situation of flow channel that has superiority, the molten fluid that soaks is mainly along flowing in crack (6), solution cavity advantage flow surfaces such as (8) or the flow channel, and leachant can't fully flow with advantage flow surface (passage) ore bed (7) on every side, mineral are obtained in contact, reaction, thereby ore body that should the zone can't fully be gathered.
As Fig. 2 (at the production fluid flow schematic diagram that has under the hypotonic regional situation), having under the hypotonic regional situation, leachant mainly oozes zone (5) by height and flows, seldom or do not have leachant and flow by hypotonic zone (4).
Fig. 1,2 shows that the molten scope (influence basin) of soaking of conventional in-situ leaching exploitation method is very limited, has reduced scope and the recovery ratio of mineral reserve and the speed of gathering of mineral production by dissolving and leaching process.
In sum, traditional in-situ leaching mining has following shortcoming:
1. moltenly soak the relative position that influence basin injected well and producing well and influence, moltenly soak scope and moltenly soak the influence that intensity can be subjected to drill holes, the molten dead angle of soaking is arranged;
2. because the heterogeneity of ore bed rock soil medium character and variability cause the leachant advantage to flow, the production by dissolving and leaching process process is limited to the influence of ore bed;
3. the production by dissolving and leaching process in hypotonic zone mainly relies on molecular diffusion rather than convection current, disperse to finish the production by dissolving and leaching process process, and therefore the exploitation rate in hypotonic zone is slow, the recovery ratio that influence mineral reserve with gather speed.
How to improve the molten scope of soaking? how to solve because the molten difficulty of soaking that the heterogeneity of ore bed causes? how to improve recovery ratio, the recovering range of production by dissolving and leaching process and the speed of gathering? all are the problems that need emphasis to solve.
Summary of the invention
Purpose of the present invention just is to overcome the problems referred to above and the deficiency that prior art exists, enlarge the scope of application of prior art, a kind of fluctuant dissolving dipping mining method based on ore bed pressure oscillation and gas-liquid mixture high compression or high swell-shrink characteristics is provided, be a kind of simple, effective, and the method that can finish simultaneously with the exploitation of conventional in-situ leaching, help improving the recovery ratio of mineral, the speed of gathering and recovering range.
The object of the present invention is achieved like this:
The in-situ leaching mining codes have become a kind of production by dissolving and leaching process field that has been widely used in mineral reserve such as uranium, copper, gold, rare earth, zinc, thorium through the development of over half a century.The present invention is the improvement to the in-situ leaching mining codes, and the place is arranged as shown in Figure 3, comprised the following steps:
1. at hydrometallurgy factory (9) or injection well (1), the liquids and gases that comprise leachant mix the gas-liquid mixture fluid that forms high-compressibility and inject ore bed (3) through injecting well (1);
2. constantly fluctuate fluid pressure in the ore bed (3) is promptly by constantly raising or reducing the fluctuation variation that the pressure that injects well (1) and producing well (2) is realized the ore bed mixed-fluid pressure;
3. collect the leaching solution that contains mineral reserve at injection well (1) or producing well (2);
4. repeat above step 1. 2. 3., soak till the mineral reserve concentration of obtaining is lower than the economic exploitation concentration up to molten.
Operating principle of the present invention:
Certain pressure forms miscible (or mixing) fluid of leachant and gas down, increase the breathing character of fluid, form the high-compressibility fluid-mixing, fluid-mixing is injected ore bed (3) by injecting well (1), constantly reduce and improve the pressure that injects well (1) or producing well (2) then, cause the pressure of the fluid-mixing of ore bed (3) constantly to change fluctuation, form the swollen compression deformation of fluid-mixing, make fluid-mixing constantly between the different permeability zones of heterogeneous body ore bed and mobile advantage face and non-advantage flow region mobile, increase time and chance that the leaching solution of hypotonic and non-advantage flow region flows, injecting well (1) or producing well (2) is arbitrary or both obtain leaching solution then.
The present invention has following advantage and good effect:
1. reduce the influence of injection well (1) and producing well (2) well spacing position to recovery ratio and recovering range; Reduce the molten dead angle of soaking.
2. weaken because of the non-homogeneous zone of ore bed (height oozes, crack, cave, fingering are serious etc.) causes the advantage of fluid to flow, increase flowing velocity, flow mechanism meeting and the time of leaching solution at hypotonic zone and non-advantage flow region; The step-down advantage that the blends perimeter zone of flowing is the transition process of convection current and disperse based on the solute migration process of molecular diffusion, quickens whole production by dissolving and leaching process process, and weakening advantage flow phenomenon is to molten negative effect of soaking.
3. under the dynamic pressure effect, hydraulic gradient in sandstone or the rock mass is dynamic change, each pressure oscillation all can produce disturbance to the water of hydration on rock particles surface, reduces the retardation of weak water of hydration fluid flow and leach chemistry reaction, accelerates flow process and chemical reaction velocity.
The present invention is applicable to the production by dissolving and leaching process field of mineral such as uranium, copper, gold, rare earth.This method is applicable to any ore bed that can carry out the in-situ leaching exploitation, also be applicable to the ore bed that is not suitable for carrying out traditional production by dissolving and leaching process method exploitation owing to the ore bed heterogeneity strongly, be primarily aimed at the latter, the scope of big quantum jump tradition production by dissolving and leaching process method and the recovery ratio of raising mineral.
Description of drawings
Fig. 1 is the production fluid flow schematic diagram under the mobility status that has superiority;
Fig. 2 is at the production fluid flow schematic diagram that has under the hypotonic regional situation;
Fig. 3 is a work schematic diagram of the present invention;
Fig. 4 is the flow schematic diagram of process medium fluid at ore bed that boost;
Fig. 5 is the flow schematic diagram of step-down process medium fluid at ore bed;
Fig. 6 is that the flow schematic diagram of process medium fluid in advantage flows ore bed pressed in ascending, descending;
Fig. 7 is an injection well pressure variation relation schematic diagram in time.
Wherein:
1-injects well;
The 2-producing well;
The 3-ore bed;
The hypotonic zone of 4-;
The 5-height oozes the zone;
The 6-fissure-plane;
7-exploits the dead band;
8-solution cavity (or molten chamber);
9-hydrometallurgy factory (leachant and leaching solution treatment plant).
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples:
1, about preparation:
By some existing treatment measures (as: methods such as vacuum method, aeration, gas displacement) the part moisture in the ore bed (3) is discharged formation unsaturation rock mass (not being liquid entirely in the rock mass hole), enter hypotonic zone so that comprise the high compression fluid-mixing of leachant.
2,1. about step:
The liquids and gases that will comprise leachant by liquid gas mixed method (as spray-on process, bubble method etc.) mix in hydrometallurgy factory (9) or injection well (1), mix the fluid-mixing that forms high-compressibility; Gas componant is for being inertia or the little gas (as: gases such as oxygen, nitrogen, carbon dioxide, hydrogen, methane, ammonia) of reaction influence to chemical reaction in molten the soaking, and the volume of gas is in 0.01～1000 times of scope of leaching solution volume; Different ratios can obtain different constrictive fluid-mixings;
By high pressure injection device (as pump, forcing press, high-pressure bottle etc.) gas-liquid mixture fluid (comprising leachant) of high-compressibility is injected ore bed (3) through injecting well (1).
3,2. about step:
Constantly reduce or increase the pressure that injects well (1) and producing well (2) by high pressure injection device (as water pump, high-pressure pump etc.) and realize that the mixed-fluid pressure fluctuation of ore bed (3) changes, its core purpose constantly expands and shrinkage strain in ore bed for the fluid-mixing of realizing high-compressibility.Its pressure oscillation variation changes in time can be any relation, as among Fig. 7 being wherein a kind of variation relation.
* in the process of boosting, miscible (mixing) fluid contraction is oozed zone (5) by height and is flowed into hypotonic zone (4), as shown in Figure 4.
* in the step-down process, fluid expands in hypotonic zone (4), and flows out hypotonic zone (4), enters height and oozes zone (5), as shown in Figure 5.
* the fluid-flow mode under the situation of the flow surface that has superiority (passage) as shown in Figure 6, miscible (mixing) fluid is constantly back and forth exchange between the fissure-plane (6) of the exploitation dead band (7) of non-advantage flow region and advantage flow surface or passage, solution cavity (8), changed the limitation that the conventional method leachant can not arrive non-advantage flow region.
4,3. about step
Collect the leaching solution that contains mineral reserve at injection well (1) or producing well (2); Specific implementation method is for generally obtaining the method for underground fluid, and form is varied: can adopt at injection well (1) and producing well (2) and utilize high-pressure pump to extract the ore bed fluid; Also can adopt fluid in fluid displacement such as the leachant displacement ore bed to obtain to contain after the fluctuation exploitation ore bed fluid of mineral; Also can utilize the high-compressibility (high-expansion) of ore bed fluid to flow out automatically by discharging the pressure that injects well and producing well; Perhaps in the pressure oscillation process, obtain (also can 2. carry out simultaneously) with step.
Claims (3)
1, a kind of fluctuant dissolving dipping mining method is characterized in that comprising the following steps:
1. at hydrometallurgy factory (9) or injection well (1), the liquids and gases that comprise leachant mix the gas-liquid mixture fluid that forms high-compressibility and inject ore bed (3) through injecting well (1);
2. constantly fluctuate fluid pressure in the ore bed (3) is promptly by constantly raising or reducing the fluctuation variation that the pressure that injects well (1) and producing well (2) is realized the ore bed mixed-fluid pressure;
3. collect the leaching solution that contains mineral reserve at injection well (1) or producing well (2);
4. repeat above step 1. 2. 3., soak till the mineral reserve concentration of obtaining is lower than the economic exploitation concentration up to molten.
2, by the described a kind of fluctuant dissolving dipping mining method of claim 1, it is characterized in that step is 1.:
The liquids and gases that will comprise leachant by liquid gas mixed method mix the fluid-mixing that forms high-compressibility in hydrometallurgy factory (9) or injection well (1); Gas componant is for being inertia or the little gas of reaction influence to chemical reaction in molten the soaking, and the volume of gas is in 0.01～1000 times of scope of leaching solution volume;
By the high pressure injection device gas-liquid mixture fluid of high-compressibility is injected ore bed (3) through injecting well (1).
3, by the described a kind of fluctuant dissolving dipping mining method of claim 1, it is characterized in that step is 2.:
Constantly reduce or increase the pressure that injects well (1) and producing well (2) by the high pressure injection device and realize that the mixed-fluid pressure fluctuation of ore bed (3) changes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100528192A CN101092873B (en) | 2007-07-24 | 2007-07-24 | Fluctuant dissolving dipping mining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100528192A CN101092873B (en) | 2007-07-24 | 2007-07-24 | Fluctuant dissolving dipping mining method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101092873A true CN101092873A (en) | 2007-12-26 |
| CN101092873B CN101092873B (en) | 2012-07-04 |
Family
ID=38991290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100528192A Expired - Fee Related CN101092873B (en) | 2007-07-24 | 2007-07-24 | Fluctuant dissolving dipping mining method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101092873B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899283A (en) * | 2012-12-26 | 2014-07-02 | 新疆中核天山铀业有限公司 | Gravel pump gravel filling method |
| CN114000859A (en) * | 2021-10-25 | 2022-02-01 | 紫金矿业集团股份有限公司 | Mining device and mining method based on leaching mining method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4358158A (en) * | 1977-02-11 | 1982-11-09 | Union Oil Company Of California | Solution mining process |
| US4398769A (en) * | 1980-11-12 | 1983-08-16 | Occidental Research Corporation | Method for fragmenting underground formations by hydraulic pressure |
| US4544206A (en) * | 1982-12-13 | 1985-10-01 | Phillips Petroleum Company | Slug-type in situ recovery of mineral values |
-
2007
- 2007-07-24 CN CN2007100528192A patent/CN101092873B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899283A (en) * | 2012-12-26 | 2014-07-02 | 新疆中核天山铀业有限公司 | Gravel pump gravel filling method |
| CN114000859A (en) * | 2021-10-25 | 2022-02-01 | 紫金矿业集团股份有限公司 | Mining device and mining method based on leaching mining method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101092873B (en) | 2012-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101126309B (en) | Horizontal fissure fluctuation leaching mining method | |
| US3708206A (en) | Process for leaching base elements, such as uranium ore, in situ | |
| CN101190743B (en) | Carbon dioxide geological sequestration method based on mixed fluid self-detaching | |
| CN109356561A (en) | A kind of method that heavy crude heat extraction gel foam inhibits bottom water to alter | |
| CN1831294B (en) | Nitrogen filling foam water-control oil-increasing technology | |
| CN105138029B (en) | The compress control method of note nitrogen volume increase coal bed gas | |
| CN101122217A (en) | Down-hole pump drainage laneway exploitation system for mixing gas dispelling coal gas, and the method | |
| CN103806885B (en) | A kind of formation chemistry heat production removing clog in deep reservoir method of injection and extraction system | |
| CN101135240A (en) | Fluctuation displacement gas deposit dislodging method | |
| CN107575185A (en) | A kind of method in underground using the effect extraction coal bed gas that colds and heat succeed each other | |
| CN104533376A (en) | Diluted acid in-situ leaching uranium mining technology | |
| CN100485160C (en) | Nitrogen foam adjusting-actuating segment plug injection technique | |
| CN105672974A (en) | Making method of triaxial-stress supercritical carbon dioxide fracturing shale experimental test specimen | |
| CN109370557A (en) | A kind of oxidation solution of suitable shale oxidation transformation | |
| CN109736765A (en) | A kind of exploitation fluid injection of coal seam hydraulic slotted liner technique is combined with extraction integration prevention and treatment composite power disaster method and matching used wetting agent | |
| CN113982546A (en) | Evaluation method for carbon dioxide injection profile of horizontal well | |
| CN106939374B (en) | In-situ ionic rare earth soaks the computational methods of ore deposit ammonium sulfate fluid injection mass concentration | |
| CN101092873B (en) | Fluctuant dissolving dipping mining method | |
| CN113818869A (en) | Tracing identification and capacity expansion yield increase method for water flooding dominant channel of water-drive reservoir | |
| CN111322052A (en) | Method for injecting oil displacement agent and plugging agent into thick oil layer by fracturing to drive and wash low-water-content part and plug strong-water-washing strip | |
| CN108625836B (en) | Water control and yield increase method for low-permeability bottom water reservoir high-water-content oil well | |
| CN102162352A (en) | Novel method for exploiting coal-bed gas | |
| CN102838978B (en) | Preparation method and application of autogeneration gas foam composite oil-displacing agent under shaft | |
| CN107058767A (en) | One kind improves the infiltrative chemical method of low infiltration sandrock-type uranium ore layer | |
| CN113404459B (en) | Selective water plugging method for bottom water gas reservoir high-water-content gas well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20180724 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |