CN111549227A - Device and method for synchronously recovering recoverable metals in well washing water during well washing - Google Patents

Device and method for synchronously recovering recoverable metals in well washing water during well washing Download PDF

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Publication number
CN111549227A
CN111549227A CN202010336294.0A CN202010336294A CN111549227A CN 111549227 A CN111549227 A CN 111549227A CN 202010336294 A CN202010336294 A CN 202010336294A CN 111549227 A CN111549227 A CN 111549227A
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China
Prior art keywords
recovery column
stop valve
well washing
well
recovery
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CN202010336294.0A
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程威
原渊
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Beijing Research Institute of Chemical Engineering and Metallurgy of CNNC
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Beijing Research Institute of Chemical Engineering and Metallurgy of CNNC
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Priority to CN202010336294.0A priority Critical patent/CN111549227A/en
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/005Separation by a physical processing technique only, e.g. by mechanical breaking
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B60/00Obtaining metals of atomic number 87 or higher, i.e. radioactive metals
    • C22B60/02Obtaining thorium, uranium, or other actinides
    • C22B60/0204Obtaining thorium, uranium, or other actinides obtaining uranium
    • C22B60/0217Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes
    • C22B60/0252Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes treatment or purification of solutions or of liquors or of slurries
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Manufacturing & Machinery (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Water Treatment By Sorption (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

A device for synchronously recovering recoverable metal in well washing water during well washing mainly comprises the following parts: 1) and the well flushing water solid-liquid gas separator is used for removing solid particles and gas in the well flushing water. 2) And the metering pump is used for injecting well washing water carrying recoverable metal into the adsorption column. 3) The recovery device comprises two recovery columns which are connected in series for adsorption, and 4) the recovery columns adopt fibrous rapid adsorbents as fillers, so that low-concentration recoverable metals in well washing water can be rapidly and deeply purified.

Description

Device and method for synchronously recovering recoverable metals in well washing water during well washing
Technical Field
The invention belongs to the technical field of uranium mine in-situ leaching, and particularly relates to a device and a method for synchronously recovering recoverable metals in well washing water during well washing.
Background
When the ground leaching production drilling well is washed, the well washing water is pushed by compressed air or a piston to rush out of the ground, and recoverable metal is carried in the well washing water which rushes out of the ground. These wash waters are typically treated by the following methods:
1) the well washing water flowing out of the washing hole is introduced into the evaporation tank by adopting a pipeline, and if the recoverable metal in the evaporation solution tank reaches a certain concentration, the solution in the evaporation tank can be pumped into the resin tower for recovery, so that the metal loss is prevented.
2) And during well washing operation, after solid particles in the well washing water are removed by adopting a solid-liquid separation device, the well washing water is pumped back to the position close to the drill hole, so that the recycling of the leaching agent is realized, and the solution carrying metal is prevented from being discharged.
The above method has the following problems:
the method 1) has the problems that water conduits are required to be laid from the drill hole to the evaporation pond in the well washing process, the laying, the position and the number of the evaporation pond need to be considered, and meanwhile, longer temporary water conduits need to be laid when the peripheral drill hole is drilled and the well is washed; and secondly, the concentration of the recoverable metal in the solution in the evaporation tank has the value of adsorption recovery only when the concentration of the recoverable metal in the solution reaches or exceeds the concentration of the recoverable metal in the resin tower.
The problem with method 2) is that the recoverable metal returns to the ground with the well-flushing water, actually causing metal loss.
Objects and summary of the invention
The purpose of the invention is: and simultaneously, the recyclable target metal in the well washing water is synchronously recycled, and the well washing water after treatment directly returns to the close injection hole, so that the recycling of the leaching agent in the well washing water is realized, and the workload of laying an evaporation pond and a water conduit and the like is avoided.
The technical scheme of the invention is as follows:
a synchronous recovery device for recoverable metals in well washing water during well washing comprises a solid-liquid gas separator, wherein the solid-liquid gas separator is connected with a metering pump, the metering pump is respectively connected with the lower ends of a recovery column A, a recovery column B and a recovery column C through a stop valve A, a stop valve B and a stop valve C, the upper ends of the recovery column A, the recovery column B and the recovery column C are respectively connected in a gathering mode through a stop valve E, a stop valve G and a stop valve H and are connected with adjacent drill holes in a connection mode;
the upper end of the recovery column is connected with the lower end of the recovery column B through a stop valve D, the upper end of the recovery column B is connected with the lower end of the recovery column C through a stop valve F, and the upper end of the recovery column C is connected with the lower end of the recovery column A through a stop valve I.
The recovery column A, the recovery column B and the recovery column C comprise quick connectors.
A method for synchronously recovering recoverable metals in well washing water during well washing comprises the following steps:
s1: connecting a solid-liquid gas separator to a washing and drilling hole, introducing compressed air into the washing and drilling hole to start well washing, introducing well washing water into the solid-liquid gas separator through a branch pipe of the washing and drilling hole, and continuously sampling and analyzing the target metal concentration c in the solid-liquid gas separator;
s2: after passing through a solid-liquid separator, well washing water is injected from the bottom of a recovery column A through a metering pump and a stop valve, after target metal is adsorbed and recovered by the recovery column A, the well washing water is injected from the top of the recovery column A into the bottom of the recovery column B through the stop valve D, after the target metal is continuously adsorbed and recovered by the recovery column B, the well washing water is injected into an adjacent injection hole from the top of the recovery column B through the stop valve;
s3: the metering pump flowmeter displays the stage flow V and the continuous sampling analysis target metal concentration c in the solid-liquid separator,
when m reaches the saturated metal amount of a single recovery column, opening the stop valve C, the stop valve F and the stop valve H, and closing the stop valve B, the stop valve D and the stop valve G;
well washing water is injected from the bottom of the recovery column B through the metering pump and the stop valve C, after target metal is adsorbed and recovered by the recovery column B, the well washing water is injected from the top of the recovery column B into the bottom of the recovery column through the stop valve F, the target metal is continuously adsorbed and recovered by the recovery column C, and the well washing water is injected from the top of the recovery column C through the stop valve H to close to the injection hole.
Further comprising S4: and detaching the recovery column A through quick connectors at two ends of the recovery column A to desorb, and installing the recovery column A at the original position after desorption.
And S5, repeating the steps, and circularly realizing the series connection of two recovery columns to adsorb and recover the target metal among the 3 recovery columns.
And in the S2, removing solid particles from the well flushing water through a solid-liquid gas separator.
And in the S2, removing carried gas from the well flushing water through a solid-liquid gas separator.
In S3, the formula of the calculated accumulated metal carried amount m of the well-flushing water is m ═ Σ (cV).
The filler of the recovery column A8, the recovery column B9 and the recovery column C16 adopts fiber matrix adsorbent.
The recovery column A8, the recovery column B9 and the recovery column C16 are made of PVC materials.
The invention is characterized in that:
1) synchronously recovering metals in the well washing water with the concentration lower than the recoverable concentration of the resin, wherein the concentration of the recoverable metals can be as low as 1 mg/L;
2) the concentration of recoverable metals in the treated well-flushing water is less than 0.05mg/L, and the well-flushing water can be directly discharged into a receiving water body;
3) long water guide pipes and evaporation ponds are not needed, and related preposed labor is reduced.
4) And (5) recycling residual leaching agent in the well washing water.
5) The recovery column is small in size and easy to disassemble and replace, and the whole system is easy to integrate on a well washing vehicle.
A device for synchronously recovering recoverable metal in well washing water during well washing mainly comprises the following parts:
1) and the well flushing water solid-liquid gas separator is used for removing solid particles and gas in the well flushing water.
2) And the metering pump is used for injecting well washing water carrying recoverable metal into the adsorption column.
3) The recovery device is connected with two recovery columns in series for adsorption,
4) the recovery column adopts fibrous rapid adsorbent as filler, and can rapidly and deeply purify low-concentration recoverable metal in well washing water. The recovery column packing adopts fiber matrix adsorbent, the recovery column single column length is 1000mm, the outer diameter is 100mm, the wall thickness is 8mm, the PVC material, the recovery column single column weight filled with the fiber adsorbent and water is less than 15kg, and the recovery column packing is suitable for single-person disassembly and assembly operation. The structure is shown in figure 2.
Drawings
FIG. 1 is a schematic view of the synchronous recovery of metals from well-flushing water;
FIG. 2 is a view showing the structure of a recovery column.
In the figure: the method comprises the steps of cleaning a drilled hole 1, a solid-liquid separator 2, a metering pump 3, a stop valve A4, a stop valve B5, a stop valve C6, a recovery column A8, a recovery column B9, a stop valve D10, a stop valve E11, a stop valve F12, a stop valve G13, a stop valve H14, a stop valve I15, a recovery column C16 and a quick connector 17.
Detailed Description
The utility model provides a synchronous recovery unit of recoverable metal in well-flushing water during well-flushing, including solid-liquid gas separator 2, solid-liquid gas separator 2 connects measuring pump 3, measuring pump 3 is connected through stop valve A4, stop valve B5, stop valve C6 and recovery column A8, recovery column B9, recovery column C16 lower extreme is connected respectively, recovery column A8, recovery column B9, recovery column C16 upper end is gathered after respectively passing through stop valve E11, stop valve G13, stop valve H14 and is connected, and connect and close to drilling 7.
The upper end of the recovery column 8 is also connected with the lower end of a recovery column B9 through a stop valve D10, the upper end of a recovery column B9 is connected with the lower end of a recovery column C16 through a stop valve F12, and the upper end of a recovery column C16 is connected with the lower end of a recovery column A8 through a stop valve I15.
The recovery column A8, the recovery column B9 and the recovery column C16 all comprise quick connectors 17;
a method for synchronously recovering recoverable metal in well washing water during well washing comprises the following steps:
s1: connecting the solid-liquid gas separator 2 to the washing drill hole 1, introducing compressed air into the washing drill hole 1 to start well washing, introducing well washing water into the solid-liquid gas separator 2 through a branch pipe of the washing drill hole 1, and continuously sampling and analyzing the target metal concentration c in the solid-liquid gas separator 2.
S2: removing solid particles and carried gas from the well flushing water through the solid-liquid gas separator 2, opening the stop valve B5, the stop valve D10 and the stop valve G13, injecting the well flushing water from the bottom of the recovery column A8 through the metering pump 3 and the stop valve 5, adsorbing and recovering target metal through the recovery column A8, injecting the well flushing water from the top of the recovery column A8 into the bottom of the recovery column B9 through the stop valve D10, continuously adsorbing and recovering the target metal through the recovery column B9, and injecting the well flushing water from the top of the recovery column B9 into the adjacent injection hole 7 through the stop valve G13.
S3: the flow meter of the metering pump 3 displays the stage flow V and the continuous sampling analysis target metal concentration c in the solid-liquid gas separator 2, the accumulated metal carrying amount m of the well flushing water is calculated, and the formula is
m=∑(cV)。
And when m reaches the saturated metal amount of a single recovery column, opening a stop valve C6, a stop valve F12 and a stop valve H14, and closing a stop valve B5, a stop valve D10 and a stop valve G13.
The well-flushing water is injected from the bottom of the recovery column B9 through the metering pump 3 and the stop valve C6, after the target metal is adsorbed and recovered by the recovery column B9, the well-flushing water is injected from the top of the recovery column B9 to the bottom of the recovery column 16 through the stop valve F12, the target metal is continuously adsorbed and recovered by the recovery column C16, and the well-flushing water is injected from the top of the recovery column C16 to the adjacent injection hole 7 through the stop valve H14.
S4: the recovery column A8 is unloaded through quick connectors 17 at two ends of the recovery column A8 for desorption, and the recovery column A8 is arranged at the recovery position after the desorption is finished.
And S5, repeating the steps, and circularly realizing the adsorption and recovery of the target metal by two recovery columns in series among 3 recovery columns.

Claims (10)

1. The utility model provides a synchronous recovery unit of recoverable metal in well-flushing aquatic during well-flushing which characterized in that: the device comprises a solid-liquid gas separator (2), wherein the solid-liquid gas separator (2) is connected with a metering pump (3), the metering pump (3) is respectively connected with the lower ends of a recovery column A (8), a recovery column B (9) and a recovery column C (16) through a stop valve A (4), a stop valve B (5) and a stop valve C (6), the upper ends of the recovery column A (8), the recovery column B (9) and the recovery column C (16) are respectively connected in a gathering mode after passing through a stop valve E (11), a stop valve G (13) and a stop valve H (14) and are connected with adjacent drill holes (7;
the upper end of the recovery column A (8) is also connected with the lower end of the recovery column B (9) through a stop valve D (10), the upper end of the recovery column B (9) is connected with the lower end of the recovery column C (16) through a stop valve F (12), and the upper end of the recovery column C (16) is connected with the lower end of the recovery column A (8) through a stop valve I (15).
2. The device for synchronously recovering recoverable metal in well washing water during well washing according to claim 1, wherein: the recovery column A (8), the recovery column B (9) and the recovery column C (16) all comprise quick connectors (17).
3. The device for synchronously recovering recoverable metal in well washing water during well washing according to claim 1, wherein: the fillers of the recovery column A (8), the recovery column B (9) and the recovery column C (16) adopt fiber matrix adsorbents.
4. The device for synchronously recovering recoverable metal in well washing water during well washing according to claim 1, wherein: the recovery column A (8), the recovery column B (9) and the recovery column C (16) are made of PVC materials.
5. A method of using the apparatus for simultaneous recovery of recoverable metal from well-flushing water during well-flushing of claim 2, wherein: the method comprises the following steps:
s1: connecting the solid-liquid gas separator (2) to the washing drill hole (1), introducing compressed air into the washing drill hole (1) to start well washing, introducing well washing water into the solid-liquid gas separator (2) through a branch pipe of the washing drill hole (1), and continuously sampling and analyzing the target metal concentration c in the solid-liquid gas separator (2);
s2: after the well washing water passes through the solid-liquid separator (2), the stop valve B5, the stop valve D (10) and the stop valve G (13) are opened, the well washing water is injected from the bottom of the recovery column A (8) through the metering pump (3) and the stop valve (5), the well washing water is injected from the top of the recovery column A (8) into the bottom of the recovery column B (9) through the stop valve D (10) after the target metal is adsorbed and recovered by the recovery column A (8), and the well washing water is injected into the adjacent injection hole (7) from the top of the recovery column B9 through the stop valve G (13) after the target metal is continuously adsorbed and recovered by the recovery column B (9;
s3: the flow meter of the metering pump 3 displays the stage flow V and the continuous sampling analysis target metal concentration c in the solid-liquid separator 2,
when m reaches the saturated metal amount of a single recovery column, opening a stop valve C (6), a stop valve F (12) and a stop valve H (14), and closing a stop valve B (5), a stop valve D (10) and a stop valve G (13);
well washing water is injected from the bottom of the recovery column B (9) through the metering pump (3) and the stop valve C (6), is injected into the bottom of the recovery column (16) from the top of the recovery column B (9) through the stop valve F (12) after target metal is adsorbed and recovered by the recovery column B (9), is continuously adsorbed and recovered by the recovery column C (16), and is injected into the adjacent injection hole (7) from the top of the recovery column C (16) through the stop valve H (14).
6. The method for synchronously recovering recoverable metal in well washing water during well washing according to claim 5, characterized by comprising the following steps: further comprising S4: the recovery column A (8) is unloaded through quick connectors (17) at two ends of the recovery column A (8) and is desorbed, and the recovery column A (8) is installed at the original position after desorption.
7. The method for synchronously recovering recoverable metal in well washing water during well washing according to claim 6, wherein the method comprises the following steps: and S5, repeating the steps, and circularly realizing the series connection of two recovery columns to adsorb and recover the target metal among the 3 recovery columns.
8. The method for synchronously recovering recoverable metal in well washing water during well washing according to claim 5, characterized by comprising the following steps: in the S2, solid particles are removed from the well flushing water through a solid-liquid gas separator (2).
9. The method for synchronously recovering recoverable metal in well washing water during well washing according to claim 5, characterized by comprising the following steps: in the S2, the well-flushing water is subjected to removal of carried gas through the solid-liquid gas separator (2).
10. The method for synchronously recovering recoverable metal in well washing water during well washing according to claim 5, characterized by comprising the following steps: in S3, the formula of the calculated accumulated metal carried amount m of the well-flushing water is m ═ Σ (cV).
CN202010336294.0A 2020-04-24 2020-04-24 Device and method for synchronously recovering recoverable metals in well washing water during well washing Pending CN111549227A (en)

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CN202010336294.0A CN111549227A (en) 2020-04-24 2020-04-24 Device and method for synchronously recovering recoverable metals in well washing water during well washing

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Application Number Priority Date Filing Date Title
CN202010336294.0A CN111549227A (en) 2020-04-24 2020-04-24 Device and method for synchronously recovering recoverable metals in well washing water during well washing

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106401510A (en) * 2016-09-13 2017-02-15 中核通辽铀业有限责任公司 Method for recycling well flushing waste water in in-situ leaching uranium exploration
CN207879280U (en) * 2017-12-29 2018-09-18 新疆中核天山铀业有限公司 A kind of movable environmental protection hole flushing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106401510A (en) * 2016-09-13 2017-02-15 中核通辽铀业有限责任公司 Method for recycling well flushing waste water in in-situ leaching uranium exploration
CN207879280U (en) * 2017-12-29 2018-09-18 新疆中核天山铀业有限公司 A kind of movable environmental protection hole flushing device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
《铀水冶基础知识》编写组 编写: "《铀水冶基础知识》", 31 December 1978, 原子能出版社 *

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