CN105463218A - Testing device and testing method for pressurized column leaching of uranium ore by means of CO2 and O2 - Google Patents
Testing device and testing method for pressurized column leaching of uranium ore by means of CO2 and O2 Download PDFInfo
- Publication number
- CN105463218A CN105463218A CN201610018577.4A CN201610018577A CN105463218A CN 105463218 A CN105463218 A CN 105463218A CN 201610018577 A CN201610018577 A CN 201610018577A CN 105463218 A CN105463218 A CN 105463218A
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- China
- Prior art keywords
- ball valve
- container
- inlet pipe
- leaching
- storing liquid
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B60/00—Obtaining metals of atomic number 87 or higher, i.e. radioactive metals
- C22B60/02—Obtaining thorium, uranium, or other actinides
- C22B60/0204—Obtaining thorium, uranium, or other actinides obtaining uranium
- C22B60/0217—Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes
- C22B60/0221—Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes by leaching
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/02—Apparatus therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
Abstract
The invention discloses a testing device and testing method for pressurized column leaching of uranium ore by means of CO2 and O2. The testing device comprises a liquid storage tank and a leaching column. A water inlet pipe connector, an O2 inlet pipe, a CO2 inlet pipe and a first pressure gauge connector are arranged on an upper end plate of the liquid storage tank, wherein the water inlet pipe connector, the O2 inlet pipe, the CO2 inlet pipe and the first pressure gauge connector are provided with ball valves. A first pressure gauge is installed on the ball valve of the pressure gauge connector. A liquid outlet pipe connector is arranged at the lower end of the cylinder wall of the liquid storage tank. The leaching column comprises a cylinder and an end cover. The end cover is connected with the cylinder through bolts. A liquid inlet pipe connector and a second pressure gauge connector which are provided with ball valves are arranged on the end cover. The ball valve on the liquid inlet pipe connector is connected with a liquid outlet connector on the liquid storage tank through a pipeline. A second pressure gauge is installed on the ball valve of the second pressure gauge connector. A right-angled ball valve, a pressure reducer and the ball valves are sequentially connected with the liquid outlet pipe connector of the leaching column. During testing, the liquid storage tank is fixed to an oscillator, a CO2 steel cylinder and an O2 steel cylinder are connected with the liquid storage tank, a uranium ore sample is placed into the leaching column, a leaching solution is prepared, and the uranium ore sample is leached through the leaching solution.
Description
Technical field
The present invention relates to Uranium Mining smelting tech field, particularly a kind of employing CO
2+ O
2to testing apparatus and the test method of the leaching of uranium ore pressured column.
Background technology
Uranium system natural uranium production technique is soaked with comprising, dump leaching, convention stir leach and the large class of stope leaching four, and wherein ground-dipping uranium extraction technology has become the important method of Uranium Mining smelting.CO in ground-dipping uranium extraction technology
2+ O
2extract technology, through experimental study for many years, obtains important breakthrough, is acknowledged as current green mining technique representative achievements.At present, CO
2+ O
2extract technology has been widely used in sandstone In-situ Leaching Uranium Mine, but have to pass through a large amount of indoor agitation leach tests, indoor pressurization column leaching test, field condition test, field expansion test etc. before the application of this explained hereafter, wherein indoor pressurization leaches the very important research contents that column leaching test is whole test link.Pressure leaching column leaching test needs some actual conditions in simulated field application process, and the test in place of its test-results to lower step has very important directive significance, and its test-results can be used as the direct basis carrying out test in place.For making indoor pressurization leaching test condition and site application conditions match better, the design of testing apparatus and test method becomes the key factor of the reliability, accuracy etc. affecting its test-results.
Existing indoor pressurization leaches column leaching test apparatus structure complexity, difficult parameters controls, fluctuation of service, is not easy to obtain satisfactory result.
Summary of the invention
The object of the invention is to overcome the above-mentioned deficiency of prior art and provide a kind of and adopt CO
2+ O
2to testing apparatus and the test method of the leaching of uranium ore pressured column.
Technical scheme of the present invention is: adopt CO
2+ O
2to the testing apparatus of uranium ore pressured column leaching, comprise container for storing liquid, leach post, the first ball valve, the second ball valve, the 3rd ball valve, the 4th ball valve, the 5th ball valve, the 6th ball valve, the 7th ball valve, the first tensimeter, the second tensimeter, pressure reducer and perpendicular type ball valve.
Container for storing liquid is the cylindrical tube of a closed at both ends, and the upper head plate of container for storing liquid is provided with admitting pipe joint, O
2inlet pipe, CO
2inlet pipe and the first pressure tapping, one end of the 3rd ball valve is arranged in the first pressure tapping, and the first tensimeter is arranged on the other end of the 3rd ball valve, and the 4th ball valve is arranged on admitting pipe joint, and the first ball valve and the second ball valve are arranged on O respectively
2inlet pipe and CO
2in inlet pipe, O
2inlet pipe and CO
2the other end of inlet pipe extend in the cylindrical shell of container for storing liquid respectively, and apart from container for storing liquid cylinder body bottom 2 ~ 3cm, the lower end of container for storing liquid barrel is provided with liquid outlet joint, and liquid outlet joint position is lower than O
2inlet pipe and CO
2the air outlet of inlet pipe.
Leach post and comprise cylindrical tube and the end cap that one end open is closed in an one end, the opening end of cylindrical shell is provided with the flange be connected with end cap, end cap is provided with liquid-inlet pipe joint and the second pressure tapping, 5th ball valve is arranged on liquid-inlet pipe joint, the other end of the 5th ball valve is connected with the liquid outlet joint on container for storing liquid by pipeline, 6th ball valve is arranged in the second pressure tapping, second tensimeter is arranged on the other end of the 6th ball valve, end cap is arranged on flange by bolt, the bottom of leaching in column casing body is provided with screen cloth, the bottom of leaching post is provided with liquid outlet joint, perpendicular type ball valve, pressure reducer and the 7th ball valve are connected with liquid outlet joint by pipeline successively.
Present invention also offers and adopt CO
2+ O
2the test method that pressured column leaching testing apparatus soaks uranium ore sample pressured column, its concrete operation step is as follows:
A, by fixing for container for storing liquid on the oscillator, by CO
2steel cylinder and O
2steel cylinder is connected with the first ball valve on container for storing liquid and the second ball valve respectively by pipeline.
B, loading uranium ore sample, the end cap leached on post is opened, first in leaching post, load sandstone filtering layer, filtering layer height 5 ~ 6cm, then load uranium ore sample in batches, after adding uranium ore sample at every turn, slowly add water to the upper surface of uranium ore sample, leach the intrapore air of uranium ore sample in post, after uranium ore sample installs to get rid of, uranium ore sample upper surface, from leaching column top 1 ~ 2cm, then covers end cap.
C, prepare leaching solution, open the 4th ball valve to container for storing liquid water filling, the water surface closes the 4th ball valve from during the 2 ~ 3cm of container for storing liquid top; Open O again
2pressure reducer valve on steel cylinder, adds O at a slow speed in container for storing liquid
2, and start vibrator simultaneously, until pressure reaches and is stabilized in 1 ~ 6MPa, close O
2pressure reducer valve on steel cylinder, stops oscillation; Then CO is opened
2pressure reducer valve on steel cylinder, adds CO at a slow speed in container for storing liquid
2, and start vibrator simultaneously, until pressure reaches and is stabilized in 1 ~ 6MPa, close CO
2pressure reducer valve on steel cylinder, stops oscillation.
D, uranium ore sample leach, and open the 5th ball valve leached on post, container for storing liquid includes CO
2and O
2solution entered by pipeline and leach post uranium ore sample is leached, in leaching process, take out the leach liquor of 100 ~ 500mL every 24h leaching column bottom, sample time is 30 ~ 120min, analyzes pH value, U concentration, CO in leach liquor
3 2-concentration, HCO
3 -concentration.
E, when take out leach liquor volume be 50 ~ 70% of liquor capacity in container for storing liquid time, prepare leaching solution according to step C.
F, when liquid meter leaching yield reaches U concentration in more than 95% or leach liquor lower than 5mg/L, off-test.
The present invention compared with prior art has following features:
1, testing apparatus structure provided by the invention is simple, easy to operate, is suitable for pressure range wide.
2, leaching process is stable, controlled, and the Leaching Rule of uranium is strong.
Below in conjunction with the drawings and specific embodiments, detailed construction of the present invention is further described.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention;
Accompanying drawing 2 is the structural representation of container for storing liquid;
Accompanying drawing 3 is the vertical view of accompanying drawing 2;
Accompanying drawing 4 is the structural representation leaching post;
Accompanying drawing 5 is the vertical view of accompanying drawing 4;
Accompanying drawing 6 is test schematic diagram.
Embodiment
Adopt CO
2+ O
2to the testing apparatus of uranium ore pressured column leaching, comprise container for storing liquid 1, leach post 2, first ball valve 3, second ball valve 4, the 3rd ball valve 5, the 4th ball valve 6, the 5th ball valve 7, the 6th ball valve 8, the 7th ball valve 9, first tensimeter 10, second tensimeter 11, pressure reducer 12 and perpendicular type ball valve 13.
Container for storing liquid 1 is the cylindrical tube of a closed at both ends, and the upper head plate of container for storing liquid 1 is provided with admitting pipe joint 1-1, O
2inlet pipe 1-2, CO
2inlet pipe 1-3 and the first pressure tapping 1-4, one end of 3rd ball valve 5 is arranged on the first pressure tapping 1-4, first tensimeter 10 is arranged on the other end of the 3rd ball valve 5, and the 4th ball valve 6 is arranged on admitting pipe joint 1-1, and the first ball valve 3 and the second ball valve 4 are arranged on O respectively
2inlet pipe 1-2 and CO
2on inlet pipe 1-3, O
2inlet pipe 1-2 and CO
2the other end of inlet pipe 1-3 extend in the cylindrical shell of container for storing liquid 1 respectively, and apart from tank base 2 ~ 3cm, the lower end of container for storing liquid 1 barrel is provided with liquid outlet joint 1-5, and liquid outlet joint 1-5 position is lower than O
2inlet pipe 1-2 and CO
2the air outlet of inlet pipe 1-3.
Leach post 2 and comprise cylindrical tube 2-1 and the end cap 2-3 that one end open is closed in an one end, the opening end of cylindrical shell 2-1 is provided with the flange 2-2 be connected with end cap 2-3, end cap 2-3 is provided with liquid-inlet pipe joint 2-4 and the second pressure tapping 2-5, 5th ball valve 7 is arranged on liquid-inlet pipe joint 2-4, the other end of the 5th ball valve 7 is connected with the liquid outlet joint 1-5 on container for storing liquid 1 by pipeline, 6th ball valve 8 is arranged on the second pressure tapping 2-5, second tensimeter 11 is arranged on the other end of the 6th ball valve 8, end cap 2-3 is arranged on flange 2-2 by bolt, the bottom of leaching in post 2 cylindrical shell is provided with screen cloth 2-7, the bottom of leaching post 2 is provided with liquid outlet joint 2-6, perpendicular type ball valve 13, pressure reducer 12 and the 7th ball valve 9 are connected with liquid outlet joint 2-6 by pipeline successively.
Adopt CO
2+ O
2the test method concrete operation step that pressured column leaching testing apparatus soaks uranium ore sample pressured column is as follows:
A, container for storing liquid 1 is fixed on vibrator 14, by CO
2steel cylinder 16 and O
2steel cylinder 15 is connected with the first ball valve 3 on container for storing liquid 1 and the second ball valve 4 respectively by pipeline.
B, loading uranium ore sample, the end cap 2-2 leached on post 2 is opened, first load sandstone filtering pading layer, filtering layer height 5 ~ 6cm toward leaching in post 2, then load uranium ore sample in batches, after adding uranium ore sample at every turn, slowly add water to the upper surface of uranium ore sample, leach air in post 2, after uranium ore sample installs to get rid of, uranium ore sample upper surface, from leaching post 2 top 1 ~ 2cm, then covers end cap 2-2.
C, prepare leaching solution, open the 4th ball valve 6 to container for storing liquid 1 water filling, the water surface closes the 4th ball valve 6 from during container for storing liquid 1 top 2 ~ 3cm; Open O again
2pressure reducer valve on steel cylinder 15, adds O at a slow speed in container for storing liquid 1
2, and start vibrator 14 simultaneously, until pressure reaches and is stabilized in 1 ~ 6MPa, close O
2pressure reducer valve on steel cylinder 15, stops oscillation; Then CO is opened
2pressure reducer valve on steel cylinder 16, adds CO at a slow speed in container for storing liquid 1
2, and start vibrator 14 simultaneously, until pressure reaches and is stabilized in 1 ~ 6MPa, close CO
2pressure reducer valve on steel cylinder 16, stops oscillation.
D, uranium ore sample leach, and open the 5th ball valve 7 leached on post 2, container for storing liquid 1 includes CO
2and O
2solution entered by pipeline and leach post 2 pairs of uranium ore samples and leach, in leaching process, leaching every 24h the leach liquor taking out 100 ~ 500ml bottom post 2, sample time is 30 ~ 120min, analyzes pH value, U concentration, CO in leach liquor
3 2-concentration, HCO
3 -concentration.
E, when take out leach liquor volume be 50 ~ 70% of liquor capacity in container for storing liquid 1 time, prepare leaching solution according to step C.
F, when liquid meter leaching yield reaches U concentration in more than 95% or leach liquor lower than 5mg/L, off-test.
Claims (2)
1. adopt CO
2+ O
2to the testing apparatus of uranium ore pressured column leaching, it is characterized in that: comprise container for storing liquid, leach post, the first ball valve, the second ball valve, the 3rd ball valve, the 4th ball valve, the 5th ball valve, the 6th ball valve, the 7th ball valve, the first tensimeter, the second tensimeter, pressure reducer and perpendicular type ball valve;
Container for storing liquid is the cylindrical tube of a closed at both ends, and the upper head plate of container for storing liquid is provided with admitting pipe joint, O
2inlet pipe, CO
2inlet pipe and the first pressure tapping, one end of the 3rd ball valve is arranged in the first pressure tapping, and the first tensimeter is arranged on the other end of the 3rd ball valve, and the 4th ball valve is arranged on admitting pipe joint, and the first ball valve and the second ball valve are arranged on O respectively
2inlet pipe and CO
2in inlet pipe, O
2inlet pipe and CO
2the other end of inlet pipe extend in the cylindrical shell of container for storing liquid respectively, and apart from container for storing liquid cylinder body bottom 2 ~ 3cm, the lower end of container for storing liquid barrel is provided with liquid outlet joint, and liquid outlet joint position is lower than O
2inlet pipe and CO
2the air outlet of inlet pipe;
Leach post and comprise cylindrical tube and the end cap that one end open is closed in an one end, the opening end of cylindrical shell is provided with the flange be connected with end cap, end cap is provided with liquid-inlet pipe joint and the second pressure tapping, 5th ball valve is arranged on liquid-inlet pipe joint, the other end of the 5th ball valve is connected with the liquid outlet joint on container for storing liquid by pipeline, 6th ball valve is arranged in the second pressure tapping, second tensimeter is arranged on the other end of the 6th ball valve, end cap is arranged on flange by bolt, the bottom of leaching in column casing body is provided with screen cloth, the bottom of leaching post is provided with liquid outlet joint, perpendicular type ball valve, pressure reducer and the 7th ball valve are connected with liquid outlet joint by pipeline successively.
2. the test method adopting testing apparatus as claimed in claim 1 to soak uranium ore sample pressured column, is characterized in that: its concrete operation step is as follows:
A, by fixing for container for storing liquid on the oscillator, by CO
2steel cylinder and O
2steel cylinder is connected with the first ball valve on container for storing liquid and the second ball valve respectively by pipeline;
B, loading uranium ore sample, the end cap leached on post is opened, first in leaching post, load sandstone filtering layer, filtering layer height 5 ~ 6cm, then load uranium ore sample in batches, after adding uranium ore sample at every turn, slowly add water to the upper surface of uranium ore sample, leach the intrapore air of uranium ore sample in post, after uranium ore sample installs to get rid of, uranium ore sample upper surface, from leaching column top 1 ~ 2cm, then covers end cap;
C, prepare leaching solution, open the 4th ball valve to container for storing liquid water filling, the water surface closes the 4th ball valve from during the 2 ~ 3cm of container for storing liquid top; Open O again
2pressure reducer valve on steel cylinder, adds O at a slow speed in container for storing liquid
2, and start vibrator simultaneously, until pressure reaches and is stabilized in 1 ~ 6MPa, close O
2pressure reducer valve on steel cylinder, stops oscillation; Then CO is opened
2pressure reducer valve on steel cylinder, adds CO at a slow speed in container for storing liquid
2, and start vibrator simultaneously, until pressure reaches and is stabilized in 1 ~ 6MPa, close CO
2pressure reducer valve on steel cylinder, stops oscillation;
D, uranium ore sample leach, and open the 5th ball valve leached on post, container for storing liquid includes CO
2and O
2solution entered by pipeline and leach post uranium ore sample is leached, in leaching process, take out the leach liquor of 100 ~ 500mL every 24h leaching column bottom, sample time is 30 ~ 120min, analyzes pH value, U concentration, CO in leach liquor
3 2-concentration, HCO
3 -concentration;
E, when take out leach liquor volume be 50 ~ 70% of liquor capacity in container for storing liquid time, prepare leaching solution according to step C;
F, when liquid meter leaching yield reaches U concentration in more than 95% or leach liquor lower than 5mg/L, off-test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610018577.4A CN105463218B (en) | 2016-01-13 | 2016-01-13 | Using CO2+O2To the experimental rig and test method of the leaching of uranium ore pressured column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610018577.4A CN105463218B (en) | 2016-01-13 | 2016-01-13 | Using CO2+O2To the experimental rig and test method of the leaching of uranium ore pressured column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105463218A true CN105463218A (en) | 2016-04-06 |
| CN105463218B CN105463218B (en) | 2018-03-20 |
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|---|---|---|---|
| CN201610018577.4A Active CN105463218B (en) | 2016-01-13 | 2016-01-13 | Using CO2+O2To the experimental rig and test method of the leaching of uranium ore pressured column |
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| CN (1) | CN105463218B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460349A (en) * | 2017-07-06 | 2017-12-12 | 核工业北京化工冶金研究院 | A kind of in-situ acid uranium leaching laboratory simulation device and test method |
| CN108663499A (en) * | 2018-04-08 | 2018-10-16 | 东华理工大学 | A kind of assembled tube type high pressure seepage flow leaching test device |
| CN109577940A (en) * | 2018-12-26 | 2019-04-05 | 核工业北京化工冶金研究院 | A kind of ground-dipping uranium extraction gas control system and method |
| CN109738504A (en) * | 2018-12-13 | 2019-05-10 | 核工业北京化工冶金研究院 | Pressure leaching experimental rig and method are soaked a kind ofly |
| CN113667844A (en) * | 2021-08-23 | 2021-11-19 | 南华大学 | Device and method for leaching sandstone uranium ore through micro-nano bubble oxidation |
| CN114058883A (en) * | 2021-12-20 | 2022-02-18 | 核工业北京化工冶金研究院 | Device and method for lifting in-situ leaching uranium extraction leachate by using hose |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107460349A (en) * | 2017-07-06 | 2017-12-12 | 核工业北京化工冶金研究院 | A kind of in-situ acid uranium leaching laboratory simulation device and test method |
| CN108663499A (en) * | 2018-04-08 | 2018-10-16 | 东华理工大学 | A kind of assembled tube type high pressure seepage flow leaching test device |
| CN109738504A (en) * | 2018-12-13 | 2019-05-10 | 核工业北京化工冶金研究院 | Pressure leaching experimental rig and method are soaked a kind ofly |
| CN109577940A (en) * | 2018-12-26 | 2019-04-05 | 核工业北京化工冶金研究院 | A kind of ground-dipping uranium extraction gas control system and method |
| CN109577940B (en) * | 2018-12-26 | 2021-04-13 | 核工业北京化工冶金研究院 | In-situ leaching uranium mining gas control system and method |
| CN113667844A (en) * | 2021-08-23 | 2021-11-19 | 南华大学 | Device and method for leaching sandstone uranium ore through micro-nano bubble oxidation |
| CN113667844B (en) * | 2021-08-23 | 2022-09-27 | 南华大学 | Device and method for leaching sandstone uranium ore through micro-nano bubble oxidation |
| JP2023031231A (en) * | 2021-08-23 | 2023-03-08 | 南華大学 | Device and method for leaching sandstone uranium ore through micro-nano bubble oxidation |
| CN114058883A (en) * | 2021-12-20 | 2022-02-18 | 核工业北京化工冶金研究院 | Device and method for lifting in-situ leaching uranium extraction leachate by using hose |
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| CN105463218B (en) | 2018-03-20 |
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