CN106310724B - A kind of In-situ Leaching Uranium Mine drop radon control method - Google Patents
A kind of In-situ Leaching Uranium Mine drop radon control method Download PDFInfo
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- CN106310724B CN106310724B CN201610823354.5A CN201610823354A CN106310724B CN 106310724 B CN106310724 B CN 106310724B CN 201610823354 A CN201610823354 A CN 201610823354A CN 106310724 B CN106310724 B CN 106310724B
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- radon
- daughter
- reservoir area
- ventilation
- situ leaching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0073—Degasification of liquids by a method not covered by groups B01D19/0005 - B01D19/0042
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0068—General arrangements, e.g. flowsheets
Abstract
The present invention provides a kind of In-situ Leaching Uranium Mine drop radon control method, step：A) leachate promoted by drawing liquid well enters collecting tank, and radon and its daughter release, collecting tank use totally-enclosed design；B) stoste from collecting tank enters adsorption zone, and adsorption zone uses forced ventilation, radon gas and its daughter is discharged into reservoir area, using uninterrupted air supply mode；C) qualifying liquid from adsorption zone enters settling zone, and settling zone uses forced ventilation, radon gas and its daughter is discharged into reservoir area, using uninterrupted air supply mode；D) reservoir area uses totally-enclosed design, and entire reservoir area takes exhaust ventilation, ventilation equipment intermitten service；E) by treated in hydrometallurgy workshop, tail washings enters matches liquid pool, and radon and its daughter release use totally-enclosed design with liquid pool.The present invention can realize the control for soaking mine radon and its daughter concentration over the ground, reduce environmentally friendly risk, radiation hazradial bundle and ventilation energy consumption.
Description
Technical field
The invention belongs to the processing methods of ground-dipping uranium extraction process waste gas, and in particular to In-situ Leaching Uranium Mine controls radon and its son
The method of bulk concentration.
Background technology
Ground-dipping uranium extraction is, by chemical reagent, the uranium in ore to be dissolved under natural mode of occurence by drilling engineering
Out, without making ore generate the centralized procurement of displacement, smelting in the uranium mining method of one.Recovery process only carries out ion to solution
Recycling metallic uranium is exchanged, the tail washings after absorption reinjects underground ore bed, the closed cycle in formation process.
Radon and radon daughter be soak the most important hazard factor in mine, to the interior illumination radiation of ground-dipping uranium extraction staff
Harm accounts for 85% or more of global radiation harm.
In-situ Leaching Uranium Mine routinely drop radon control method be reinforce ventilation, waterwheel workshop, collecting tank and with liquid pool radon it is dense
It spends higher position to handle using blower ventilation, radon and its daughter are discharged into air and are diluted diffusion, reduce radon to a certain extent
And its concentration of daughter.But the method is limited by atmospheric conditions, under low pressure atmospheric environment, radon and its daughter dilution diffusion effect
Fruit is limited, and the alpha aerosol concentration being formed simultaneously is larger, also can be to hydrometallurgy workshop, collecting tank and with generating unfavorable shadow around liquid pool
It rings, and wind turbine operating increases and adopts uranium cost.
Invention content
The purpose of the present invention is to provide a kind of In-situ Leaching Uranium Mine drop radon control method, soak with making mine radon gas and its
The drawbacks of main point of release radon and its daughter concentration discharge of daughter meet national standard, solves conventional drop radon method and trend of environmental protection
The problem of danger.
Realize the technical solution of the object of the invention：A kind of In-situ Leaching Uranium Mine drop radon control method comprising following steps：
A) leachate promoted by drawing liquid well enters collecting tank, and radon and its daughter release, collecting tank use totally-enclosed design；
B) stoste from collecting tank enters adsorption zone, and adsorption zone uses forced ventilation, radon gas and its daughter are discharged into
Reservoir area, using uninterrupted air supply mode；
C) qualifying liquid from adsorption zone enters settling zone, and settling zone uses forced ventilation, and radon gas and its daughter are arranged
Enter reservoir area, using uninterrupted air supply mode；
D) reservoir area uses totally-enclosed design, and entire reservoir area takes exhaust ventilation, ventilation equipment intermitten service；
E) by treated in hydrometallurgy workshop, tail washings enters matches liquid pool, and radon and its daughter release are set with liquid pool using totally-enclosed
Meter.
A kind of method of In-situ Leaching Uranium Mine drop radon control as described above, described in the ground main field of leaching mine radon release
All collecting tanks, adsorption zone, settling zone, reservoir area and match liquid pool.
A kind of method of In-situ Leaching Uranium Mine drop radon control as described above, described in collecting tank smeared using cement mortar
Single brick fire dam in face, top use lightweight steel construction.
A kind of method of In-situ Leaching Uranium Mine drop radon control as described above, described in collecting tank air-tightness pressure difference it is big
In 95mmHg.
A kind of method of In-situ Leaching Uranium Mine drop radon control as described above, described in adsorption zone indentation air quantity be
30m3/s。
A kind of method of In-situ Leaching Uranium Mine drop radon control as described above, described in settling zone indentation air quantity be
30m3/s。
A kind of method of In-situ Leaching Uranium Mine drop radon control as described above, described in reservoir area exhaust air rate be 70m3/
s。
A kind of method of In-situ Leaching Uranium Mine drop radon control as described above, described in reservoir area air-tightness pressure difference it is big
In 95mmHg.
A kind of method of In-situ Leaching Uranium Mine drop radon control as described above, described in the entire reservoir areas step d) take
Exhaust ventilation, ventilation equipment intermitten service, each of which 30min ventilations are primary, ventilation duration 20min.
Effect of the invention is that：The method of In-situ Leaching Uranium Mine of the present invention drop radon control, can realize pair
Ground soaks the control of mine radon and its daughter concentration, reduces environmentally friendly risk, radiation hazradial bundle and ventilation energy consumption.The method of the present invention is soaked with making
Mine radon gas and its discharge of the main point of release radon and its daughter concentration of daughter meet national standard, solve conventional drop radon method
The problem of drawback and environmentally friendly risk.
Description of the drawings
Fig. 1 is that radon control method schematic diagram drops in In-situ Leaching Uranium Mine of the present invention.
Specific implementation mode
In the following with reference to the drawings and specific embodiments to a kind of In-situ Leaching Uranium Mine drop radon control method work of the present invention
It further describes.
Embodiment 1
As shown in Figure 1, radon control method drops in a kind of In-situ Leaching Uranium Mine of the present invention, wherein soak mine radon release
Main place has collecting tank, adsorption zone, settling zone, reservoir area and matches liquid pool, includes the following steps：
A) leachate promoted by drawing liquid well enters collecting tank, and radon and its daughter release, collecting tank use totally-enclosed design；
It is 30min that control leachate, which was migrated to the raw liquor pump time,；
B) stoste from collecting tank enters adsorption zone, and adsorption zone uses forced ventilation, radon gas and its daughter are discharged into
Reservoir area, using uninterrupted air supply mode；
C) qualifying liquid from adsorption zone enters settling zone, and settling zone uses forced ventilation, and radon gas and its daughter are arranged
Enter reservoir area, using uninterrupted air supply mode；
D) reservoir area uses totally-enclosed design, entire reservoir area to take exhaust ventilation, ventilation equipment intermitten service, each
30min ventilations are primary, ventilation duration 20min；
E) by treated in hydrometallurgy workshop, tail washings enters matches liquid pool, and radon and its daughter release are set with liquid pool using totally-enclosed
Meter, it is 30min that control tail washings, which was migrated to the topping-up pump time,.
Embodiment 2
As shown in Figure 1, radon control method drops in a kind of In-situ Leaching Uranium Mine of the present invention, wherein soak mine radon release
Main place has collecting tank, adsorption zone, settling zone, reservoir area and matches liquid pool, includes the following steps：
A) leachate promoted by drawing liquid well enters collecting tank, and radon and its daughter release, collecting tank use totally-enclosed design；
It is 30min that control leachate, which was migrated to the raw liquor pump time,.The collecting tank uses single brick fire dam of cement sand plaster, on
Portion uses lightweight steel construction.The collecting tank air-tightness pressure difference is more than 95mmHg.
B) stoste from collecting tank enters adsorption zone, and adsorption zone uses forced ventilation, radon gas and its daughter are discharged into
Reservoir area, using uninterrupted air supply mode；The adsorption zone indentation air quantity is 30m3/s。
C) qualifying liquid from adsorption zone enters settling zone, and settling zone uses forced ventilation, and radon gas and its daughter are arranged
Enter reservoir area, using uninterrupted air supply mode；The settling zone indentation air quantity is 30m3/s。
D) reservoir area uses totally-enclosed design, entire reservoir area to take exhaust ventilation, ventilation equipment intermitten service, each
30min ventilations are primary, ventilation duration 20min；The reservoir area exhaust air rate is 70m3/s.The reservoir area air-tightness pressure difference
Value is more than 95mmHg.
E) by treated in hydrometallurgy workshop, tail washings enters matches liquid pool, and radon and its daughter release are set with liquid pool using totally-enclosed
Meter, it is 30min that control tail washings, which was migrated to the topping-up pump time,.
Embodiment 3
As shown in Figure 1, radon control method drops in a kind of In-situ Leaching Uranium Mine of the present invention, wherein soak mine radon release
Main place has collecting tank, adsorption zone, settling zone, reservoir area and matches liquid pool, includes the following steps：
A) leachate promoted by drawing liquid well enters collecting tank, and radon and its daughter release, collecting tank use totally-enclosed design；
It is 40min that control leachate, which was migrated to the raw liquor pump time,；The collecting tank uses single brick fire dam of cement sand plaster, on
Portion uses lightweight steel construction.The collecting tank air-tightness pressure difference is more than 95mmHg.
B) stoste from collecting tank enters adsorption zone, and adsorption zone uses forced ventilation, radon gas and its daughter are discharged into
Reservoir area, using uninterrupted air supply mode；The adsorption zone indentation air quantity is 35m3/s。
C) qualifying liquid from adsorption zone enters settling zone, and settling zone uses forced ventilation, and radon gas and its daughter are arranged
Enter reservoir area, using uninterrupted air supply mode；The settling zone indentation air quantity is 35m3/s。
D) reservoir area uses totally-enclosed design, entire reservoir area to take exhaust ventilation, ventilation equipment intermitten service, each
40min ventilations are primary, ventilation duration 30min；The reservoir area exhaust air rate is 80m3/s.The reservoir area air-tightness pressure difference
Value is more than 95mmHg.
E) by treated in hydrometallurgy workshop, tail washings enters matches liquid pool, and radon and its daughter release are set with liquid pool using totally-enclosed
Meter, it is 40min that control tail washings, which was migrated to the topping-up pump time,.
Claims (8)
1. radon control method drops in a kind of In-situ Leaching Uranium Mine, it is characterised in that：This method comprises the following steps：
A) leachate promoted by drawing liquid well enters collecting tank, and radon and its daughter release, collecting tank use totally-enclosed design；
B) stoste from collecting tank enters adsorption zone, and adsorption zone uses forced ventilation, radon gas and its daughter are discharged into reservoir
Area, using uninterrupted air supply mode；
C) qualifying liquid from adsorption zone enters settling zone, and settling zone uses forced ventilation, radon gas and its daughter are discharged into storage
Chi Qu, using uninterrupted air supply mode；
D) reservoir area uses totally-enclosed design, and entire reservoir area takes exhaust ventilation, ventilation equipment intermitten service；Described is whole
A reservoir area takes exhaust ventilation, and ventilation equipment intermitten service, each of which 30min ventilations are primary, ventilation duration 20min；
E) by treated in hydrometallurgy workshop, tail washings enters matches liquid pool, and radon and its daughter release use totally-enclosed design with liquid pool.
2. a kind of method of In-situ Leaching Uranium Mine drop radon control according to claim 1, it is characterised in that：The ground leaching
Mine radon release main place has collecting tank, adsorption zone, settling zone, reservoir area and matches liquid pool.
3. a kind of method of In-situ Leaching Uranium Mine drop radon control according to claim 1, it is characterised in that：The liquid collecting
Pond uses single brick fire dam of cement sand plaster, top to use lightweight steel construction.
4. a kind of method of In-situ Leaching Uranium Mine drop radon control according to claim 1, it is characterised in that：The liquid collecting
Pond air-tightness pressure difference is more than 95mmHg.
5. a kind of method of In-situ Leaching Uranium Mine drop radon control according to claim 1, it is characterised in that：The absorption
It is 30m that area, which is pressed into air quantity,3/s。
6. a kind of method of In-situ Leaching Uranium Mine drop radon control according to claim 1, it is characterised in that：The precipitation
It is 30m that area, which is pressed into air quantity,3/s。
7. a kind of method of In-situ Leaching Uranium Mine drop radon control according to claim 1, it is characterised in that：The reservoir
Area's exhaust air rate is 70m3/s。
8. a kind of method of In-situ Leaching Uranium Mine drop radon control according to claim 1, it is characterised in that：The reservoir
Area's air-tightness pressure difference is more than 95mmHg.
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| CN201610823354.5A CN106310724B (en) | 2016-09-13 | 2016-09-13 | A kind of In-situ Leaching Uranium Mine drop radon control method |
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| CN201610823354.5A CN106310724B (en) | 2016-09-13 | 2016-09-13 | A kind of In-situ Leaching Uranium Mine drop radon control method |
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| CN106310724B true CN106310724B (en) | 2018-09-28 |
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| CN109243656B (en) * | 2018-08-17 | 2022-04-26 | 西南科技大学 | Method for controlling radon and daughter uranium mining and metallurgy airborne radioactive pollution by artificial algae crusts |
Citations (4)
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|---|---|---|---|---|
| US4316800A (en) * | 1979-02-21 | 1982-02-23 | Uranerz U.S.A. Inc | Recovery of uranium from enriched solution by a membrane separation process |
| CN85108719A (en) * | 1985-11-12 | 1987-05-20 | 东北工学院 | The method and apparatus of mine air filtering radon daughter |
| CN101580900A (en) * | 2009-06-05 | 2009-11-18 | 辽河石油勘探局 | Technique for reagent-free in situ leaching uranium mining from sandstone type uranium deposit |
| CN205205202U (en) * | 2015-12-15 | 2016-05-04 | 东华理工大学 | It soaks uranium series all to flow to soak uranium pond and flow |
-
2016
- 2016-09-13 CN CN201610823354.5A patent/CN106310724B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4316800A (en) * | 1979-02-21 | 1982-02-23 | Uranerz U.S.A. Inc | Recovery of uranium from enriched solution by a membrane separation process |
| CN85108719A (en) * | 1985-11-12 | 1987-05-20 | 东北工学院 | The method and apparatus of mine air filtering radon daughter |
| CN101580900A (en) * | 2009-06-05 | 2009-11-18 | 辽河石油勘探局 | Technique for reagent-free in situ leaching uranium mining from sandstone type uranium deposit |
| CN205205202U (en) * | 2015-12-15 | 2016-05-04 | 东华理工大学 | It soaks uranium series all to flow to soak uranium pond and flow |
Non-Patent Citations (3)
| Title |
|---|
| "分布式原地浸出采铀工艺技术与关键设备";刘乃忠等;《中国核科学技术进展报告（第四卷）》;20150930;第32-40页 * |
| "压抽混合式通风独头巷道内氡及氡子体浓度的计算模型及其分布规律研究";叶勇军等;《核科学与工程》;20140630;第34卷(第2期);第219-227页 * |
| "地浸采铀设置氡的辐射照射及其控制措施";张雪礼等;《核安全》;20160331;第15卷(第1期);第17-22页 * |
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