CN101580900A - Technique for reagent-free in situ leaching uranium mining from sandstone type uranium deposit - Google Patents
Technique for reagent-free in situ leaching uranium mining from sandstone type uranium deposit Download PDFInfo
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- CN101580900A CN101580900A CNA2009100118553A CN200910011855A CN101580900A CN 101580900 A CN101580900 A CN 101580900A CN A2009100118553 A CNA2009100118553 A CN A2009100118553A CN 200910011855 A CN200910011855 A CN 200910011855A CN 101580900 A CN101580900 A CN 101580900A
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- uranium
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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
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- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention relates to a technique for reagent-free in situ leaching uranium mining from a sandstone type uranium deposit, which comprises the following steps: performing preoxidation on ore beds by injecting air; injecting industrial oxygen into the ore beds in the processes of extracting and liquid charging; and forming hexavalent uranium into a stable soluble complex in bicarbonate type ground water. The technique achieves the oxidation of the metallic uranium in the ore beds under the condition of not introducing chemical reagents of acid, alkali and the like so that the water-insoluble tetravalent uranium is converted into water-soluble hexavalent uranyl ions for the convenience of performing extraction on the ground surface; besides, the technique has the advantages of stable product quality, low production cost, no pollution of an extraction-injection balanced closed cycle, easy decommissioning treatment and the like.
Description
Technical field:
The present invention relates to a kind ofly be used for hyposmosis and can soak the production technique of sandrock-type uranium deposit in ground.
Background technology:
At present, dual mode is mainly taked in uranium mining both at home and abroad: a kind of is the dump leaching mining mode that is used for hard rock type mining, and another kind is the ground-dipping uranium extraction mode that is used for the sandrock-type uranium deposit exploitation.Usually adopt acid system ground to soak or alkaline process ground soaks two kinds of methods for the sandrock-type uranium deposit ground-dipping uranium extraction, wherein, though acid system ground-dipping uranium extraction oxidation effectiveness is good, but need to drop into higher cost, and labor strength is big, also have drawbacks such as serious to stratum and environmental pollution, that the retired difficulty of governance in mine is big, the alkaline process ground-dipping uranium extraction then exists problems such as effect is not ideal enough.
Summary of the invention:
The object of the invention is to provide that a kind of production cost is low, oxidation effectiveness good, constant product quality and cleanliness without any pollution, is easy to the sandstone type U-ore non-reagent ground dipping uranium extracting technology of retired improvement.
Purpose technical scheme of the present invention is as follows.This kind oil recovery technique is by injecting air ore bed to be carried out preoxidation, taking out, injecting industrial oxygen to ore bed in the fluid injection process, makes hexavalent uranium form stable easy to be molten complex compound in hydrocarbonate type underground water then; The positively charged ion of chemical reaction mainly is Na
+, K
+And a spot of Ca
2+And Mg
2+, negatively charged ion is [UO
2(CO
3)
3]
4-, the main chemical reactions process is as follows:
UO
2+HCO
3 -+O
2→[UO
2(CO
3)
3]
4-+H
2O
UO
3+3CO
3 2-+H
2O→[UO
2(CO
3)
3]
4-+2HO
UO
2+3CO
3 2-+H
2O+0.5O
2→[UO
2(CO
3)
3]
4-+2HO
-
Or UO
2+ CO
3 2-+ 2HCO
3 -+ H
2O+0.5O
2→ [UO
2(CO
3)
3]
4-+ 2HO
-
The technical process of this technology is as follows:
1, your liquid pool uranium-bearing ore bed water (Extract) is drawn to, sedimentation enters adsorption tower after removing silt particle and suspended impurity;
2, uraniferous saturated resin is through passing through Na
2CO
3And NaHCO
3Mixed solution drip washing parses the uranyl complex in the resin, is under the 2.8-6.5 condition at acidity-basicity ph value then, and process and NaOH reaction precipitation make the diuranate of generation be gathered into particle, produces the diuranate product through press filtration, oven dry again;
3, adsorption tail liquid returns the dosing pond, annotates back ore bed with leaching solution, recycles.
The present invention realizes the oxidation of uranium metal in ore bed under the condition of not introducing chemical reagent such as soda acid, make water-fast uranous change into water-soluble sexavalence uranyl ion, be convenient to extract processing on ground, constant product quality, have production cost low, take out and annotate advantages such as pollution-free, the retired processing of balance closed cycle is easy.
Description of drawings:
Accompanying drawing is a process flow diagram of the present invention.
Embodiment:
Below in conjunction with accompanying drawing enforcement of the present invention is illustrated.
As shown in the figure, technical process of the present invention comprises that the drawing liquid well is evacuated to the uranium-bearing ore bed water in the ore bed and enters adsorption tower absorption after your liquid pool, the sedimentation, saturated resin is produced product " yellow cake " through resolving operations such as precipitation, press filtration, oven dry, and adsorption tail liquid then returns the dosing pond and recycled by fluid injection well re-injection ore bed.
Claims (1)
1, a kind of sandrock-type uranium deposit non-reagent ground dipping uranium extracting technology, it is characterized in that, this kind technology is by injecting air ore bed to be carried out preoxidation, taking out, injecting industrial oxygen to ore bed in the fluid injection process, makes hexavalent uranium form stable easy to be molten complex compound in heavy carbonic lithotype underground water then;
The technical process of this technology is as follows:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100118553A CN101580900A (en) | 2009-06-05 | 2009-06-05 | Technique for reagent-free in situ leaching uranium mining from sandstone type uranium deposit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100118553A CN101580900A (en) | 2009-06-05 | 2009-06-05 | Technique for reagent-free in situ leaching uranium mining from sandstone type uranium deposit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101580900A true CN101580900A (en) | 2009-11-18 |
Family
ID=41363213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100118553A Pending CN101580900A (en) | 2009-06-05 | 2009-06-05 | Technique for reagent-free in situ leaching uranium mining from sandstone type uranium deposit |
Country Status (1)
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|---|---|
| CN (1) | CN101580900A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711462A (en) * | 2012-10-09 | 2014-04-09 | 核工业北京化工冶金研究院 | Leaching experimental facility for in-situ leaching uranium mining |
| CN105370285A (en) * | 2015-12-15 | 2016-03-02 | 中核第四研究设计工程有限公司 | Method for preventing decline of underground water level in uranium mining through in-situ leaching |
| CN106148737A (en) * | 2016-07-06 | 2016-11-23 | 东华理工大学 | A kind of method reclaiming association rhenium resource from sandstone-type uranium mineralization with respect ground dipping uranium extracting process adsorption tail liquid |
| CN106310724A (en) * | 2016-09-13 | 2017-01-11 | 中核通辽铀业有限责任公司 | In-situ leachable uranium mining and mine radon reduction control method |
| CN106927539A (en) * | 2015-12-31 | 2017-07-07 | 中核四○四有限公司 | A kind of UF6Produce the processing method of tail gas leacheate |
| CN106930764A (en) * | 2015-12-31 | 2017-07-07 | 新疆中核天山铀业有限公司 | Multilayer sandstone-type uranium mineralization with respect separate zone production technique |
| CN107178346A (en) * | 2017-04-26 | 2017-09-19 | 核工业北京化工冶金研究院 | A kind of in-situ acid uranium leaching method of air self-suction oxidation |
| CN109763807A (en) * | 2019-01-28 | 2019-05-17 | 中核内蒙古矿业有限公司 | A kind of ground-dipping uranium extraction closed cycle pumping system and method |
| CN110438353A (en) * | 2019-08-29 | 2019-11-12 | 中广核铀业新疆发展有限公司 | A kind of severely-weathered Strong oxdiative molding sand conglomerate uranium ore hydrometallurgy method |
| CN114853208A (en) * | 2022-04-27 | 2022-08-05 | 中陕核工业集团综合分析测试有限公司 | Method for harmless treatment and resource utilization of associated mine radioactive acidic wastewater |
-
2009
- 2009-06-05 CN CNA2009100118553A patent/CN101580900A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711462B (en) * | 2012-10-09 | 2016-06-29 | 核工业北京化工冶金研究院 | A kind of ground-dipping uranium extraction leaching experiment device |
| CN103711462A (en) * | 2012-10-09 | 2014-04-09 | 核工业北京化工冶金研究院 | Leaching experimental facility for in-situ leaching uranium mining |
| CN105370285A (en) * | 2015-12-15 | 2016-03-02 | 中核第四研究设计工程有限公司 | Method for preventing decline of underground water level in uranium mining through in-situ leaching |
| CN106930764B (en) * | 2015-12-31 | 2018-11-02 | 新疆中核天山铀业有限公司 | Multilayer sandstone-type uranium mineralization with respect separate zone production technique |
| CN106927539B (en) * | 2015-12-31 | 2020-12-15 | 中核四○四有限公司 | UF (ultra filtration factor)6Treatment method of production tail gas leacheate |
| CN106927539A (en) * | 2015-12-31 | 2017-07-07 | 中核四○四有限公司 | A kind of UF6Produce the processing method of tail gas leacheate |
| CN106930764A (en) * | 2015-12-31 | 2017-07-07 | 新疆中核天山铀业有限公司 | Multilayer sandstone-type uranium mineralization with respect separate zone production technique |
| CN106148737A (en) * | 2016-07-06 | 2016-11-23 | 东华理工大学 | A kind of method reclaiming association rhenium resource from sandstone-type uranium mineralization with respect ground dipping uranium extracting process adsorption tail liquid |
| CN106148737B (en) * | 2016-07-06 | 2019-05-14 | 东华理工大学 | A method of recycling association rhenium resource from sandstone-type uranium mineralization with respect ground dipping uranium extracting process adsorption tail liquid |
| CN106310724B (en) * | 2016-09-13 | 2018-09-28 | 中核通辽铀业有限责任公司 | A kind of In-situ Leaching Uranium Mine drop radon control method |
| CN106310724A (en) * | 2016-09-13 | 2017-01-11 | 中核通辽铀业有限责任公司 | In-situ leachable uranium mining and mine radon reduction control method |
| CN107178346A (en) * | 2017-04-26 | 2017-09-19 | 核工业北京化工冶金研究院 | A kind of in-situ acid uranium leaching method of air self-suction oxidation |
| CN107178346B (en) * | 2017-04-26 | 2019-05-17 | 核工业北京化工冶金研究院 | A kind of in-situ acid uranium leaching method of air self-suction oxidation |
| CN109763807A (en) * | 2019-01-28 | 2019-05-17 | 中核内蒙古矿业有限公司 | A kind of ground-dipping uranium extraction closed cycle pumping system and method |
| CN110438353A (en) * | 2019-08-29 | 2019-11-12 | 中广核铀业新疆发展有限公司 | A kind of severely-weathered Strong oxdiative molding sand conglomerate uranium ore hydrometallurgy method |
| CN114853208A (en) * | 2022-04-27 | 2022-08-05 | 中陕核工业集团综合分析测试有限公司 | Method for harmless treatment and resource utilization of associated mine radioactive acidic wastewater |
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Open date: 20091118 |