CN105063350B - Method for improving mother liquor recovery rate in in-situ leaching mining - Google Patents
Method for improving mother liquor recovery rate in in-situ leaching mining Download PDFInfo
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- CN105063350B CN105063350B CN201510576458.6A CN201510576458A CN105063350B CN 105063350 B CN105063350 B CN 105063350B CN 201510576458 A CN201510576458 A CN 201510576458A CN 105063350 B CN105063350 B CN 105063350B
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- mother solution
- mother liquor
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- grout hole
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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
The invention discloses a method for improving the mother liquor recovery rate in in-situ leaching mining, comprising the steps that S1, an integrated impervious element is formed; S2, a mother liquor is injected and recycled, i.e., rare earth in an ion state in an ore body is gradually extracted by the mother liquor and is dissolved in the mother liquor, the mother liquor with rare earth ions flows to the integrated impervious element (2) along cracks and channels in an ore body layer (7) and then flows into a liquid accumulating ditch (5) along the integrated impervious element (2) to be collected, and the integrated impervious element (2) greatly improves the recovery rate of the mother liquor. The method has the beneficial effects of improving the mother liquor collecting rate, reducing recovery cost, and realizing a short extraction cycle and simple operation.
Description
Technical field
The present invention relates to the technical field of ore deposit soil Rare Earth Ion, in particularly a kind of in situ leaching mining mother solution is improved
The method of the response rate.
Background technology
China is the most abundant country of rare earth resources in the world, have the title of " rare earth kingdom ", south based on heavy rare earth,
The north is based on light rare earth.Not only reserves are big for China rare earth mineral products, and wide in variety, quality is good, and deposit type is unique, such as Inner Mongol
The weathering crust type mineral deposit of ancient Bayan Obo sedimentary metamorphic-hydrothermal metasomatism type mud-rare earth mineral deposit and Nanling mountains.
Ion adsorption type rare earth ore thing is, with the presence of " ion phase " mineral shape, to be adsorbed on " carrier " mineral surfaces
Rare-earth mineral, the rare earth overwhelming majority in rare-earth mineral is attracted on certain mineral carrier with cationic state presence, is such as inhaled
It is attached in the aluminium silicate minerals such as kaolinite, white mica or Fluoro-carbonate Minerals.Ion adsorption type rare earth ore is by " ionic adsorption
The ore body that type rare-earth mineral " is constituted, and southern RE ore belongs to ion adsorption type rare earth ore substantially.
At present, traditional in_situ leaching stope liquid collection system imperfection, does not take comprehensive liquid collection system, if any original place leaching
Ore mining field is received liquid ditch and is collected using the foot of the hill substantially, and mother solution collection rate is extremely low, and mother solution is lost in more seriously, additionally, original place leaching
Ore mining swims off field that streams water Rare-Earth Content is higher, and ammonia-nitrogen content is higher, and streams water Rare-Earth Content can reach 0.02g/L, stream
Ammonia nitrogen concentration 100mg/L or so in the stream of domain.
The content of the invention
It is an object of the invention to overcome the shortcoming of prior art, there is provided a kind of mother solution collection rate is high, reduce cost recovery,
The method that disposing mother liquor rate is improved in short, the simple to operate in situ leaching mining of extraction cycle.
The purpose of the present invention is achieved through the following technical solutions：Disposing mother liquor rate is improved in a kind of in situ leaching mining
Method, it is comprised the following steps：
The formation of S1, integrated antiseepage body：
S1（I）, using portable knapsack rig clay layer the multiple grout holes of top drilling, per two neighboring grout hole
Spacing be 1 ~ 2m, depth L=h1+h2+h3+h4 of grout hole, wherein h1 for clay layer thickness, h2 for ore body layer thickness,
H3 is the thickness of protective layer, and h3 is more than or equal to 1m, and h4 is the thickness of base plate curtain, and h4 is 2~4m；
S1（II）, first in step S1（I）In each grout hole under enter packer, packer is lowered into h3 positions
Place, the grouting pump for recycling 3SNS injects cement-sodium silicate double liquid, adjacent holes into grout hole using circulating grouting way
Cement-sodium silicate double liquid phase counterdiffusion interior between hole is simultaneously overlapped, and then takes out packer, finally realizes integrated antiseepage
The formation of body；
S2, mother solution injection and recovery：
S2（I）, be first inserted into anchor pole to grout hole, anchor pole is inserted in integrated antiseepage body, recycle the grouting of 3SNS
Pump injects cement into grout hole, it is ensured that summation of the height of the concrete column of formation less than h2 and h3；
S2（II）, to step S2（I）In each grout hole in injection mother solution, while in the low-lying of grout hole bottom line
Place opens up hydrops ditch, and with mother solution and the Long contact time of ore body, mother solution gradually extracts the rare earth of ore body intermediate ion state
And dissolve in mother solution, the mother solution with rare earth ion along on the crack in ore body layer, passage stream to integrated antiseepage body, subsequently again
Flow in hydrops ditch along integrated antiseepage body and collect, integrated antiseepage body greatly improves the response rate of mother solution.
The present invention has advantages below：（1）The integrated antiseepage body of formation greatly improves the response rate of mother solution, greatly reduces
The input cost of mother solution extraction, improves economic benefit, while integrated antiseepage body also avoid mother solution to continue to permeate toward bottom.
（2）The anchor pole and concrete column formed in grout hole is avoided because mother solution injection rate is too fast or injection rate is excessive, easily induction
The phenomenon of geological disaster, it is ensured that the smooth extraction of ionic condition rare earth in ore body.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
In figure, 1- grout holes, 2- integrated antiseepage bodies, 3- anchor poles, 4- concrete columns, 5- hydrops ditches, 6- clay layers, 7- ore bodies
Layer, 8- protective layers, 9- base plate curtains.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention will be further described, and protection scope of the present invention is not limited to described below：
As shown in figure 1, a kind of method that disposing mother liquor rate is improved in situ leaching mining, it is comprised the following steps：
The formation of S1, integrated antiseepage body：
S1（I）, using portable knapsack rig clay layer 6 the multiple grout holes 1 of top drilling, per two neighboring grouting
The spacing in hole 1 is 1 ~ 2m, and depth L=h1+h2+h3+h4 of grout hole 1, wherein h1 are the thickness of clay layer 6, and h2 is ore body layer 7
Thickness, h3 for protective layer 8 thickness, h3 be more than or equal to 1m, h4 for base plate curtain 9 thickness, h4 be 2~4m；
S1（II）, first in step S1（I）In each grout hole 1 under enter packer, packer is lowered into h3 positions
Place, the grouting pump for recycling 3SNS injects cement-sodium silicate double liquid using circulating grouting way into grout hole 1, adjacent
Cement-sodium silicate double liquid phase counterdiffusion interior between Kong Yukong is simultaneously overlapped, and then takes out packer, is finally realized comprehensive anti-
The formation of body 2 is oozed, integrated antiseepage body 2 is tabular, and integrated antiseepage body 2 is horizontal by the setting of certain angle.
S2, mother solution injection and recovery：
S2（I）, be first inserted into anchor pole 3 to grout hole 1, anchor pole 3 is inserted in integrated antiseepage body 2, recycle 3SNS's
Grouting pump injects cement into grout hole 1, it is ensured that summation of the height of the concrete column 4 of formation less than h2 and h3, cement and anchor pole
The entirety of formation effectively prevent because mother solution injection rate is too fast or injection rate is excessive, easily the phenomenon of induction geological disaster.
S2（II）, to step S2（I）In each grout hole 1 in injection mother solution, while in the low of the bottom line of grout hole 1
Depression opens up hydrops ditch 5, and with mother solution and the Long contact time of ore body, mother solution gradually extracts the rare earth of ore body intermediate ion state
Go out and dissolve in mother solution, the mother solution with rare earth ion along on the crack in ore body layer 7, passage stream to integrated antiseepage body 2, with
Flow in hydrops ditch 5 further along integrated antiseepage body 2 afterwards and collect, integrated antiseepage body 2 greatly improves the response rate of mother solution, greatly drop
The input cost of low mother solution extraction, improves economic benefit, while integrated antiseepage body 2 also avoid mother solution to continue to ooze toward bottom
Thoroughly.
The above is only the preferred embodiment of the present invention, it should be understood that the present invention is not limited to described herein
Form, is not to be taken as the exclusion to other embodiment, and can be used for various other combinations, modification and environment, and can be at this
In the text contemplated scope, it is modified by the technology or knowledge of above-mentioned teaching or association area.And those skilled in the art are entered
Capable change and change, then all should be in the protection domains of claims of the present invention without departing from the spirit and scope of the present invention
It is interior.
Claims (1)
1. a kind of method that disposing mother liquor rate is improved in situ leaching mining, it is characterised in that：It is comprised the following steps：
The formation of S1, integrated antiseepage body：
S1（I）, using portable knapsack rig in clay layer（6）The multiple grout holes of top drilling（1）, per two neighboring grouting
Hole（1）Spacing be 1 ~ 2m, grout hole（1）Depth L=h1+h2+h3+h4, wherein h1 be clay layer（6）Thickness, h2 is ore deposit
Body layer（7）Thickness, h3 is protective layer（8）Thickness, h3 be more than or equal to 1m, h4 be base plate curtain（9）Thickness, h4 be 2~
4m；
S1（II）, first in step S1（I）In each grout hole（1）Enter packer under interior, packer is lowered at h3 positions,
The grouting pump for recycling 3SNS adopts circulating grouting way to grout hole（1）Interior injection cement-sodium silicate double liquid, adjacent holes
Cement-sodium silicate double liquid phase counterdiffusion interior between hole is simultaneously overlapped, and then takes out packer, finally realizes integrated antiseepage
Body（2）Formation, integrated antiseepage body（2）For tabular, and integrated antiseepage body（2）Arrange horizontal by certain angle, it is comprehensive anti-
Ooze body（2）The other end and hydrops ditch（5）Connection；
S2, mother solution injection and recovery：
S2（I）, first to grout hole（1）It is inserted into anchor pole（3）, make anchor pole（3）It is inserted into integrated antiseepage body（2）It is interior, recycle
The grouting pump of 3SNS is to grout hole（1）Interior injection cement, it is ensured that the concrete column of formation（4）Summation of the height less than h2 and h3；
S2（II）, to step S2（I）In each grout hole（1）Interior injection mother solution, while in grout hole（1）Bottom line it is low
Depression opens up hydrops ditch（5）, with mother solution and the Long contact time of ore body, mother solution gradually extracts the rare earth of ore body intermediate ion state
Take out and dissolve in mother solution, the mother solution with rare earth ion is along ore body layer（7）Interior crack, passage stream is to integrated antiseepage body
（2）On, subsequently further along integrated antiseepage body（2）Flow into hydrops ditch（5）Interior collection, integrated antiseepage body（2）Greatly improve mother solution
The response rate, improve economic benefit.
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| CN105063350B true CN105063350B (en) | 2017-05-17 |
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| CN105506314B (en) * | 2015-12-18 | 2017-09-26 | 中铝广西有色崇左稀土开发有限公司 | A kind of method from volcanic rock ion type rareearth ore recovering rare earth rich solution |
| CN106498188B (en) * | 2016-10-14 | 2019-01-01 | 赣州弘茂稀土工程有限公司 | The rare earth original place of ion type rareearth ore controls extract technology |
| CN109469472B (en) * | 2018-12-19 | 2020-12-11 | 四川共拓岩土科技股份有限公司 | In-situ leaching mining method for ionic rare earth ore |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1847615A (en) * | 2005-04-29 | 2006-10-18 | 林江颖 | Rude ore mining method for ion type RE ore |
| EP2602425A1 (en) * | 2010-08-03 | 2013-06-12 | Jiangxi Rare Earth & Rare Metals Tungsten Group Holding Co., Ltd. | Process for in-situ leaching by liquid injection |
| CN103194597A (en) * | 2013-04-20 | 2013-07-10 | 北京科技大学 | In-situ leaching method of electric field strengthened fine grain tailings |
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- 2015-09-11 CN CN201510576458.6A patent/CN105063350B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1847615A (en) * | 2005-04-29 | 2006-10-18 | 林江颖 | Rude ore mining method for ion type RE ore |
| EP2602425A1 (en) * | 2010-08-03 | 2013-06-12 | Jiangxi Rare Earth & Rare Metals Tungsten Group Holding Co., Ltd. | Process for in-situ leaching by liquid injection |
| CN103194597A (en) * | 2013-04-20 | 2013-07-10 | 北京科技大学 | In-situ leaching method of electric field strengthened fine grain tailings |
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