CN112459762A - In-situ leaching instant high-pressure air pulse seam forming system and using method thereof - Google Patents
In-situ leaching instant high-pressure air pulse seam forming system and using method thereof Download PDFInfo
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- CN112459762A CN112459762A CN202011093091.XA CN202011093091A CN112459762A CN 112459762 A CN112459762 A CN 112459762A CN 202011093091 A CN202011093091 A CN 202011093091A CN 112459762 A CN112459762 A CN 112459762A
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- air compressor
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- leaching
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/28—Dissolving minerals other than hydrocarbons, e.g. by an alkaline or acid leaching agent
Abstract
The invention provides an in-situ leaching instant high-pressure air pulse seam forming system and a using method thereof, and belongs to the technical field of leaching exploitation. The system comprises a gas storage tank, an air compressor, a pressure gauge, a check valve, a sealant, a pulse controller, a steel pipe, a pressure sensing optical fiber instrument and a data acquisition system, the gas storage tank is connected with the air compressor, the air in the gas storage tank is input into the air compressor to be compressed, the check valve is positioned at the joint of the gas storage tank and the air compressor, gas backflow is prevented, the pressure gauge is positioned outside the device and is connected with the air compressor, the pulse controller is connected with the air compressor, physical shock waves are generated and gas pulse is controlled to impact an ore body, the sealant is positioned at the joint of the pulse controller and the pressure sensing optical fiber instrument, and gas leakage is. The device is rational in infrastructure, and it is convenient to use, can effectual increase normal position leaching exploitation in-process slit passage, makes the mineral leaching liquid more abundant with the ore contact, provides the help for improving normal position leaching efficiency.
Description
Technical Field
The invention relates to the technical field of leaching exploitation, in particular to an in-situ leaching instantaneous high-pressure air pulse seam forming system and a using method thereof.
Background
In-situ leaching refers to injecting a solution from the earth surface into a deep-ground ore body through a liquid injection drill hole, carrying out leaching reaction on the solution and a target mineral in the flowing process of the solution in the ore body, enabling obtained soluble metal ions to enter the solution, lifting the solution to the earth surface through a liquid extraction hole, and finally obtaining a metal product through an extraction-electrodeposition process. The technology can realize underground unmanned operation, avoids environmental damage caused by ore body excavation, and has the characteristics of high safety, small pollution, low cost and the like. The process of flowing the solution in the ore body is the core of the whole ore leaching process, and the research on pore evolution plays an important role in promoting and developing the in-situ leaching technology. In recent years, many researchers have conducted some basic experimental studies on the performance changes of in situ immersion under various environmental conditions.
When various factors influencing the in-situ leaching performance are researched, the pore structure often plays a crucial role. The pore-cracking structure of the leaching system is the 'skeleton' of the leaching reaction system, leaching solution can reach a reaction interface only through the pore-cracking structure, and then is in contact with minerals to generate chemical reaction, and the corroded metal ions also need to be transported through the pore-cracking network, so that the leaching reaction system has important influence on mineral leaching. With the development of testing means such as Scanning Electron Microscope (SEM), Computer Tomography (CT) and the like, students at home and abroad make great progress in the aspects of nondestructive detection of the pore crack structural characteristics of the mineral leaching system, three-dimensional characterization and the like. Researches such as a 3D complex pore structure characterization method and mineral exposure conditions in a multi-scale pore structure are developed by adopting a CT technology, so that quantification of the pore structure of a heap leaching system is effectively realized; meanwhile, research reports show that H2SO4Reacting with gangue mineral to dissolve it and promote the formation of internal poresAnd the extension, the progress of the mineral leaching reaction is promoted. Therefore, by combining indoor tests and field conditions, the development of the in-situ leaching theory can be promoted by accurately researching the performance of the in-situ leaching under different pore crack evolution conditions.
In the actual in-situ leaching process, the complex deep-ground environment of high temperature, high osmotic pressure and high ground pressure is encountered, and along with the progress of the leaching reaction, the pore fracture evolution in different time periods is dynamic, so that the pore fracture change under a single condition researched in a laboratory can not be matched with the actual condition. In laboratory tests, testing means such as Scanning Electron Microscopy (SEM) and Computed Tomography (CT) are mainly used. However, the current study of the effects of pore crack evolution on the properties of in situ leaching is generally conducted under specific conditions. These set conditions are not perfectly combined with the site exactly, therefore, the experimental data always have a certain deviation from the site, which affects the development of the in-situ leaching technology.
In conclusion, it is very important to research the seepage cracks in the in-situ leaching process. However, there are currently few reports or studies on this technology. The invention aims to provide an in-situ leaching instantaneous high-pressure air pulse seam forming system and a using method thereof, and provides a technical basis for improving the accuracy of in-situ leaching design.
Disclosure of Invention
The invention aims to provide an in-situ leaching instant high-pressure air pulse seam forming system and a using method thereof.
The system comprises a gas storage tank, a one-way valve, a pressure gauge, an air compressor, a steel pipe, a pulse controller, a pressure sensing optical fiber instrument, a sealant and a data acquisition system, wherein the gas storage tank is connected with the air compressor, the one-way valve is positioned at the joint of the gas storage tank and the air compressor, the pressure gauge is positioned at the outer side of the system and is connected with the air compressor, the pulse controller is connected with the air compressor through a connecting pipe, the pressure sensing optical fiber instrument is arranged on the top of the pulse controller and is sealed by the sealant, and the other end of the pressure sensing optical fiber instrument.
The connecting pipe of the pulse controller and the air compressor is formed by connecting a single steel pipe end to end through threads.
The sealant is a sealing material which is not easy to flow and has certain cohesiveness, and has a sealing effect.
The method using the system specifically comprises the following steps:
s1: analyzing and calculating according to conditions such as in-situ leaching ore body, ore body depth, leaching solution volume and the like to obtain the range of the needed instantaneous high-pressure air pulse crack;
s2: drilling a vertical hole in an ore body by using a drilling machine, and recording the depth of the drilled hole;
s3: putting the first section of steel pipe into the drilled hole, and fixing the pulse controller and the pressure-sensitive optical fiber instrument to the end part of the first section of steel pipe;
s4: sealing the connection part of the pulse controller and the pressure-sensitive optical fiber instrument by using a sealant so as to play a role in sealing;
s5: then continuously tightening and feeding the remaining steel pipes into the drill hole by the same method described in S3, recording the number of the steel pipes, and comparing the number with the length of the drill hole for verification;
s6: opening a pulse controller, and applying pressure to the ore body to form a crack;
s7: starting a power supply at a data acquisition system part, and starting to acquire data;
s8: after the data acquisition is finished, downloading the data through a port of the data acquisition system;
s9: and taking out the steel pipe, and arranging the pressure-sensitive optical fiber instrument and the steel pipe.
The technical scheme of the invention has the following beneficial effects:
according to the scheme, seams can be simultaneously and accurately formed on the ore body, real-time, online and continuous monitoring data can be obtained, and accurate basis is provided for analysis of in-situ leaching mining. The method mainly has the following advantages: firstly, the method is applicable to seam making behaviors of any ore body, including the field of metal ores and the like; secondly, seam forming can be accurately carried out on the ore body, the farthest monitoring distance can reach hundreds of meters, the monitoring requirement is far met, and meanwhile, a reliable basis is provided for later indoor related tests; thirdly, data in the whole seam making process are automatically collected by adopting an acquisition system, the process is safe and efficient, and meanwhile, the drilling depth and the number of steel pipes can be verified mutually, so that errors are avoided; fourthly, due to the portability and flexibility of the system, operation points can be flexibly arranged according to the specific conditions of each ore body; fifth, the range of high pressures applied for deep rock breaking can be determined substantially from the data collection system and can be regulated. Meanwhile, the system has the characteristics of simplicity in operation, relatively low manufacturing cost, long service life, intellectualization and the like, can provide a field basis for indoor design of in-situ leaching mining in the future, and has strong theoretical and practical values.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention.
Wherein: 1-air storage tank, 2-one-way valve, 3-pressure gauge, 4-air compressor, 5-steel pipe, 6-pulse controller, 7-pressure sensing optical fiber instrument, 8-sealant, 9-data acquisition system.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides an in-situ leaching instant high-pressure air pulse seam forming system and a using method thereof.
As shown in fig. 1, the system comprises a gas storage tank 1, a check valve 2, a pressure gauge 3, an air compressor 4, a steel pipe 5, a pulse controller 6, a pressure sensing optical fiber instrument 7, a sealant 8 and a data acquisition system 9, wherein the gas storage tank 1 is connected with the air compressor 4, the check valve 2 is positioned at the joint of the gas storage tank 1 and the air compressor 4, the pressure gauge 3 is positioned outside the device and connected with the air compressor 4, the pulse controller 6 is connected with the air compressor 4, the pressure sensing optical fiber instrument 7 is arranged at the top end of the pulse controller 6 and sealed by the sealant 8, and the other end of the pressure sensing optical fiber instrument 7 is connected with the data acquisition system 9.
The air storage tank is connected with the air compressor and used for inputting air in the air storage tank into the air compressor for compression; the one-way valve is positioned at the joint of the air storage tank and the air compressor and is mainly used for preventing gas from flowing back; the pressure gauge is positioned outside the device and is connected with the air compressor; the pulse controller is connected with the air compressor and is used for generating physical shock waves according to the numerical value requirement in the pressure gauge and controlling the air pulses to impact the ore body, so as to carry out shock and microwave vibration and gradually form cracks in the ore body; the sealant is positioned at the joint of the pulse controller and the pressure-sensitive optical fiber instrument and is mainly used for preventing gas leakage.
The connecting pipe of the pulse controller 6 and the air compressor 4 is formed by connecting a single steel pipe 5 end to end through threads.
The steel pipes 5 are formed by connecting single steel pipes end to end through threads, and the number of the steel pipes required is calculated according to needs in actual monitoring; one end of a pressure sensing optical fiber instrument 7 is placed in the front end of the pulse controller 6 and sealed by a sealant 8, and the other end is connected with a data acquisition system 9.
The data acquisition system is mainly used for collecting related monitoring data, and the data has the characteristics of real time, on-line and continuity.
The sealant 8 is a sealing material which is not easy to flow and has certain cohesiveness, and plays a role in sealing.
The specific application comprises the following steps:
s1: analyzing and calculating according to conditions such as in-situ leaching ore body, ore body depth, leaching solution volume and the like to obtain the range of the needed instantaneous high-pressure air pulse crack;
s2: drilling a vertical hole in an ore body by using a drilling machine, and recording the depth of the drilled hole;
s3: putting the first section of steel pipe into the drilled hole, and fixing the pulse controller and the pressure-sensitive optical fiber instrument to the end part of the first section of steel pipe;
s4: sealing the connection part of the pulse controller and the pressure-sensitive optical fiber instrument by using a sealant so as to play a role in sealing;
s5: then continuously tightening and feeding the remaining steel pipes into the drill hole by the same method described in S3, recording the number of the steel pipes, and comparing the number with the length of the drill hole for verification;
s6: opening a pulse controller, and applying pressure to the ore body to form a crack;
s7: starting a power supply at a data acquisition system part, and starting to acquire data;
s8: after the data acquisition is finished, downloading the data through the port;
s9: and taking out the steel pipe, and arranging the pressure-sensitive optical fiber instrument and the steel pipe.
The specific calculation method in S1 is as follows: the approximate hardness of the ore body is determined according to the type of the ore body to be leached, and further the instantaneous pulse force approximately required for crushing the ore body is obtained. The force applied to the ore body at the vertical depth is calculated according to the approximate depth of the ore body, and then the number and the size of the seam making are determined according to the required volume of the leaching solution in the ore body. Finally, the range of the needed instantaneous high-pressure pulse light seam forming is obtained. The system can effectively collect related data in the seam making process of different leaching ore bodies, different depths and different leaching solution volumes, and provides reference values for subsequent seam making.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (3)
1. The in-situ leaching instant high-pressure air pulse seam forming system is characterized in that: including gas holder (1), check valve (2), manometer (3), air compressor (4), steel pipe (5), pulse controller (6), pressure sensing optical fiber instrument (7), sealed glue (8) and data acquisition system (9), gas holder (1) links to each other with air compressor (4), check valve (2) are located gas holder (1) and air compressor (4) junction, manometer (3) are located the system outside and link to each other with air compressor (4), pulse controller (6) link to each other through the connecting pipe with air compressor (4), pressure sensing optical fiber instrument (7) set up and are sealed by sealed glue (8) on pulse controller (6) top, pressure sensing optical fiber instrument (7) other end links to each other with data acquisition system (9).
2. The in-situ leaching transient high-pressure air pulse seam making system according to claim 1, wherein: the pulse controller (6) and the connecting pipe of the air compressor (4) are formed by connecting a single steel pipe (5) end to end through threads.
3. The method for applying the in-situ leaching instantaneous high-pressure gas pulse seam making system according to claim 1, wherein the method comprises the following steps: the method comprises the following steps:
s1: analyzing and calculating according to the conditions of the in-situ leaching ore body, the depth of the ore body and the volume of the leaching solution to obtain the range of the needed instantaneous high-pressure air pulse crack;
s2: drilling a vertical hole in an ore body by using a drilling machine, and recording the depth of the drilled hole;
s3: putting the first section of steel pipe into the drilled hole, and fixing the pulse controller and the pressure-sensitive optical fiber instrument to the end part of the first section of steel pipe;
s4: sealing the connection part of the pulse controller and the pressure-sensitive optical fiber instrument by using a sealant;
s5: continuously tightening the rest steel pipes according to the method of S3 and sending the steel pipes into the drill hole, recording the number of the steel pipes, and comparing and verifying the number of the steel pipes with the length of the drill hole;
s6: opening a pulse controller, and applying pressure to the ore body to form a crack;
s7: starting a power supply at a data acquisition system part, and starting to acquire data;
s8: after the data acquisition is finished, downloading the data through a port of the data acquisition system;
s9: and taking out the steel pipe, and arranging the pressure-sensitive optical fiber instrument and the steel pipe.
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| CN202011093091.XA CN112459762A (en) | 2020-10-13 | 2020-10-13 | In-situ leaching instant high-pressure air pulse seam forming system and using method thereof |
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| CN202011093091.XA CN112459762A (en) | 2020-10-13 | 2020-10-13 | In-situ leaching instant high-pressure air pulse seam forming system and using method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4630868A (en) * | 1979-05-11 | 1986-12-23 | Terra Tek, Inc. | Process for solution mining |
| CN101440704A (en) * | 2008-12-29 | 2009-05-27 | 石家庄铁道学院 | Ground-dipping ore bed continuous high-energy gas fracturing seepage increasing method and specific high-energy gas generator |
| CN102828735A (en) * | 2012-05-14 | 2012-12-19 | 中国石油大学(华东) | Method for improving shale gas well recovery ratio on basis of air knocking |
| CN102852506A (en) * | 2012-10-17 | 2013-01-02 | 中国矿业大学 | High-pressure pneumatic blasting pressure relieving and transmission increasing method |
| CN110792468A (en) * | 2019-09-06 | 2020-02-14 | 西安科技大学 | Underground coal mine cyclic pulse gas injection displacement gas extraction system |
-
2020
- 2020-10-13 CN CN202011093091.XA patent/CN112459762A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4630868A (en) * | 1979-05-11 | 1986-12-23 | Terra Tek, Inc. | Process for solution mining |
| CN101440704A (en) * | 2008-12-29 | 2009-05-27 | 石家庄铁道学院 | Ground-dipping ore bed continuous high-energy gas fracturing seepage increasing method and specific high-energy gas generator |
| CN102828735A (en) * | 2012-05-14 | 2012-12-19 | 中国石油大学(华东) | Method for improving shale gas well recovery ratio on basis of air knocking |
| CN102852506A (en) * | 2012-10-17 | 2013-01-02 | 中国矿业大学 | High-pressure pneumatic blasting pressure relieving and transmission increasing method |
| CN110792468A (en) * | 2019-09-06 | 2020-02-14 | 西安科技大学 | Underground coal mine cyclic pulse gas injection displacement gas extraction system |
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