CN111733335A - Industrial soil rubidium salt extraction and leaching device - Google Patents
Industrial soil rubidium salt extraction and leaching device Download PDFInfo
- Publication number
- CN111733335A CN111733335A CN202010725138.3A CN202010725138A CN111733335A CN 111733335 A CN111733335 A CN 111733335A CN 202010725138 A CN202010725138 A CN 202010725138A CN 111733335 A CN111733335 A CN 111733335A
- Authority
- CN
- China
- Prior art keywords
- leaching
- end cover
- rubidium salt
- barrel body
- industrial soil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 150000003297 rubidium Chemical class 0.000 title claims abstract description 27
- 238000002386 leaching Methods 0.000 title claims abstract description 26
- 239000002689 soil Substances 0.000 title claims abstract description 20
- 238000000605 extraction Methods 0.000 title claims abstract description 14
- 238000007599 discharging Methods 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 5
- 229920001973 fluoroelastomer Polymers 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910052701 rubidium Inorganic materials 0.000 description 14
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 14
- 239000007788 liquid Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000012267 brine Substances 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000010438 granite Substances 0.000 description 2
- 229910052629 lepidolite Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010423 industrial mineral Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- 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
- C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
- C22B26/10—Obtaining alkali metals
-
- 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
-
- 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 provides an industrial soil rubidium salt extraction and leaching device which comprises a cylinder body and a screw conveyor arranged in the cylinder body, wherein a feeding end cover is arranged on one side of the cylinder body, and a discharging end cover is arranged on the other side of the cylinder body; the feeding end cover is provided with a feeding port, the discharging end cover is provided with a discharging port, the rotating direction of the barrel body is opposite to that of the screw conveyor, and an ultrasonic generator is arranged on a conveying shaft of the screw conveyor.
Description
Technical Field
The invention relates to the technical field of ore dressing leaching devices, in particular to an industrial soil rubidium salt extraction leaching device.
Background
The content of rubidium in earth crust is 5.1 × 10-5—3.1×10-4And 16 positions respectively according to the abundance arrangement of elements. It has long been recognized that rubidium resources are primarily found in granite pegmatite, brines and potash deposits. People mainly develop and recover rubidium from granite pegmatite ore beds, and the main industrial mineral is lepidolite. The content of rubidium in lepidolite is about 3.75 percent, the content of rubidium in seawater is 0.12 g/ton, and a plurality of stratum water and salt lake brine also contain rubidium.
In China, rubidium ores are mainly distributed in mountainous areas of Hunan and Sichuan, the rubidium ores are difficult to mine and have high cost, and the rubidium concentration in salt lakes and brine in China is low, so that the rubidium ores coexist with a large amount of lithium, sodium, potassium and cesium with similar chemical properties, and the industrial separation is difficult.
According to actual exploration, the soil in the mountain area in Hebei is rich in rubidium elements, so that the mining value is achieved, the existing rubidium ore extraction process in the soil is still in an experimental stage, and a progressive achievement is obtained preliminarily. The leaching device is designed by an ore process in the prior art, and no leaching and extracting device which can be used for reference is available for industrialized and mass-produced soil rubidium salt.
Therefore, how to provide a rational-design industrialized rubidium salt extraction and leaching device is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of this, the invention provides an industrialized rubidium salt extraction and leaching device, which solves the problems in the prior art, and the specific scheme is as follows:
the industrial soil rubidium salt extraction and leaching device comprises a barrel body and a screw conveyor arranged inside the barrel body, wherein a feeding end cover is arranged on one side of the barrel body, and a discharging end cover is arranged on the other side of the barrel body; the feeding end cover is provided with a feeding port, the discharging end cover is provided with a discharging port, the rotation directions of the cylinder body and the screw conveyor are opposite,
an ultrasonic generator is arranged on a conveying shaft of the screw conveyor.
Specifically, still be equipped with the vortex chamber on the section of thick bamboo wall of section of thick bamboo body, the vortex intracavity is equipped with the agitator.
Specifically, the agitator includes (mixing) shaft and stirring wheel, the middle part of (mixing) shaft is equipped with the air flue.
Specifically, the turbulence cavities in the same circumferential cross-sectional direction of the cylinder body are uniformly distributed, and the ultrasonic generators in the same circumferential cross-sectional direction of the conveying shaft are uniformly distributed.
Specifically, the turbulent flow chambers are arranged on each vertical section of the cylinder body, and the ultrasonic generators are arranged on each vertical section of the conveying shaft.
Specifically, the movement of the cylinder body is realized by a cylinder power system through gear transmission; the rotation of the spiral conveyor is realized by a conveying shaft power system through belt transmission.
Specifically, the feeding end cover and the discharging end cover are sealed with the barrel body and the conveying shaft through lip-shaped sealing rings, the framework of each lip-shaped sealing ring is a stainless steel plate, and the main material of each lip-shaped sealing ring is fluororubber or silicon rubber.
Specifically, the frequency selected by the ultrasonic generator is 20-40 kHZ.
According to the industrialized soil rubidium salt extraction and leaching device, the cylinder body and the transmission shaft rotate relatively, the ultrasonic generating device is additionally arranged, the turbulent flow device and the air compression device are additionally arranged, so that rubidium salt in particles containing reduced rubidium salt is leached at an accelerated speed under the condition of low-speed transmission, the length of equipment is saved, and the industrialization of rubidium ore extraction in soil is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a rubidium salt leaching device provided by the present invention.
FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1.
FIG. 3 is a schematic top view of the agitator.
FIG. 4 is a schematic cross-sectional view of my stirring shaft.
FIG. 5 is a schematic diagram of ultrasonic cavitation effect.
In the figure: 10. the ultrasonic generator comprises a barrel body 11, a feeding end cover 110, a feeding opening 12, a discharging end cover 120, an outlet material 14, a turbulence cavity 140, a stirrer 141, a stirring wheel 142, a stirring shaft 143, an air passage 15, a barrel power system 16, a gear transmission 20, a conveying shaft 21, a spiral blade 22, an ultrasonic generator 23, a conveying shaft power system 24 and a belt transmission.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a rubidium salt leaching device provided by the present invention, fig. 2 is a schematic sectional diagram of a portion a-a in fig. 1, fig. 3 is a schematic plan view of a stirrer, fig. 4 is a schematic sectional diagram of a stirring shaft, and fig. 5 is a schematic sectional diagram of an ultrasonic cavitation effect. Referring to fig. 1-5, the invention claims an industrialized soil rubidium salt extraction and leaching device, which comprises a cylinder body 10 and a screw conveyor arranged inside the cylinder body 10, wherein one side of the cylinder body 10 is provided with a feeding end cover 11, and the other side of the cylinder body 10 is provided with a discharging end cover 12; a feeding port 110 is formed in the feeding end cover 11, a discharging port 120 is formed in the discharging end cover 12, and the rotation directions of the cylinder body 10 and the screw conveyor are opposite; an ultrasonic generator 22 is arranged on the conveying shaft 20 of the screw conveyor.
The invention aims at carrying out water leaching treatment on crushed products of rubidium-rich soil and chloride after being mixed and roasted according to a proportion so as to ensure that rubidium salt subjected to reduction reaction is fully dissolved in water, thereby carrying out subsequent extraction process. When this device specifically used, send into this device through pan feeding mouth 110 with liquid thick liquids, under helical blade 21's promotion, promote the feed liquid and slowly move to the discharge gate, in practical application, guarantee that the feed liquid is from entering into by the whole in-process of discharging, the time that the feed liquid is detained in this device is not less than 1 hour, specifically can set for according to actual site conditions, and generally suggestion section of thick bamboo body length is no less than 10 meters.
In order to further increase the dissolution rate of rubidium salt in the solid particles, an ultrasonic generator is additionally arranged on the conveying shaft 20, and the ultrasonic generator can bring several effects to the device, firstly, the cavitation effect of the ultrasonic generator is utilized to ensure that under the condition that the material liquid moves at a low speed, enough air bubbles are generated on the conveying shaft 20 to impact the solid particles rich in rubidium salt, so as to promote the full dissolution of rubidium salt, and a diagram of the cavitation effect of the ultrasonic generator can be seen in fig. 5. Secondly, the heat effect of the ultrasonic wave is utilized, the temperature of the mixed liquid can be raised by continuing the ultrasonic wave, and the leaching rate is improved. The mechanical effect of the ultrasonic wave is utilized again, and the continuous existence of the ultrasonic wave can promote the solid particles to move ceaselessly and accelerate the leaching of rubidium salt.
Specifically, in order to further accelerate the continuous flow of the feed liquid in the cylinder body 10, a flow disturbing cavity 14 is further provided on the cylinder wall of the cylinder body 10, and a stirrer 140 is provided in the flow disturbing cavity 14.
Furthermore, the stirrer 140 includes a stirring shaft 142 and a stirring wheel 141, an air passage 143 is disposed in the middle of the stirring shaft 142, and compressed air is injected into the cylinder body 10 through the air passage 143, so as to further disturb the movement of solid particles in the feed liquid and improve the leaching rate.
Specifically, the turbulent flow chambers 14 are uniformly distributed in the same circumferential cross-sectional direction of the cartridge body 10, and the ultrasonic generators 22 are uniformly distributed in the same circumferential cross-sectional direction of the feeding shaft 20.
Specifically, the turbulent flow chamber 14 is provided with 3 in each vertical cross section of the cartridge body 10, and the ultrasonic generator 22 is provided with 3 in each vertical cross section of the feeding shaft 20. Experiments prove that the most obvious flow disturbing effect can be achieved and the production cost of the equipment is low when the three flow disturbing cavities form an included angle of 120 degrees.
The axial layout distance of the turbulence cavities 14 in the cylinder body 10 is preferably 30mm-1000mm, and can be determined according to the length and the diameter of the cylinder body 10, and the axial layout number of the ultrasonic generators 22 can be referred to the axial layout of the turbulence cavities 14 along the conveying shaft 20.
Specifically, the movement of the cylinder body 10 is realized by a cylinder power system 15 through a gear transmission 16; the rotation of the screw conveyor is realized by a conveying shaft power system 23 through a belt transmission 24, and can also be realized through a chain wheel or a gear transmission.
Specifically, the feeding end cover 11 and the discharging end cover 12 are sealed with the barrel body 10 and the conveying shaft 20 by lip-shaped sealing rings, the framework of each lip-shaped sealing ring is a stainless steel plate, and the main material of each lip-shaped sealing ring is fluororubber or silicon rubber.
Specifically, the frequency of the ultrasonic generator is 20-40 kHz.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. The industrial soil rubidium salt extraction and leaching device comprises a barrel body (10) and a screw conveyor arranged inside the barrel body (10), wherein a feeding end cover (11) is arranged on one side of the barrel body (10), and a discharging end cover (12) is arranged on the other side of the barrel body (10); be equipped with pan feeding mouth (110) on pan feeding end cover (11), be equipped with discharge gate (120) on discharge end cover (12), its characterized in that:
the rotation direction of the cylinder body (10) is opposite to that of the screw conveyor;
an ultrasonic generator (22) is arranged on a conveying shaft (20) of the screw conveyor.
2. The device for extracting and leaching rubidium salt from industrial soil according to claim 1, characterized in that: the wall of the barrel body (10) is also provided with a flow disturbing cavity (14), and a stirrer (140) is arranged in the flow disturbing cavity (14).
3. The device for extracting and leaching rubidium salt from industrial soil according to claim 2, characterized in that: the stirrer (140) comprises a stirring shaft (142) and a stirring wheel (141), and an air passage (143) is arranged in the middle of the stirring shaft (142).
4. The device for extracting and leaching rubidium salt from industrial soil according to claim 2, characterized in that: the turbulence cavities (14) of the barrel body (10) in the same circumferential cross section direction are uniformly distributed, and the ultrasonic generators (22) of the conveying shaft (20) in the same circumferential cross section direction are uniformly distributed.
5. The device for extracting and leaching rubidium salt from industrial soil according to claim 4, characterized in that: the flow disturbing cavities (14) are provided with 3 in each vertical section of the cylinder body (10), and the ultrasonic generators (22) are provided with 3 in each vertical section of the conveying shaft (20).
6. An industrial soil rubidium salt extraction and leaching device according to any one of claims 1-5, characterized in that: the movement of the cylinder body (10) is realized by a cylinder power system (15) through gear transmission (16); the rotation of the screw conveyor is realized by a conveying shaft power system (23) through a belt transmission (24).
7. The device for extracting and leaching rubidium salt from industrial soil according to claim 6, characterized in that: the feeding end cover (11) and the discharging end cover (12) are sealed with the barrel body (10) and the conveying shaft (20) through lip-shaped sealing rings, the framework of each lip-shaped sealing ring is a stainless steel plate, and the main material of each lip-shaped sealing ring is fluororubber or silicon rubber.
8. The device for extracting and leaching rubidium salt from industrial soil according to claim 7, characterized in that: the frequency selected by the ultrasonic generator (22) is 20-40 kHZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010725138.3A CN111733335A (en) | 2020-07-24 | 2020-07-24 | Industrial soil rubidium salt extraction and leaching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010725138.3A CN111733335A (en) | 2020-07-24 | 2020-07-24 | Industrial soil rubidium salt extraction and leaching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111733335A true CN111733335A (en) | 2020-10-02 |
Family
ID=72657685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010725138.3A Pending CN111733335A (en) | 2020-07-24 | 2020-07-24 | Industrial soil rubidium salt extraction and leaching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111733335A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1069845A1 (en) * | 1982-11-29 | 1984-01-30 | Грузинский Научно-Исследовательский Институт Пищевой Промышленности | Irrigation extractor |
| CN2401245Y (en) * | 2000-01-12 | 2000-10-18 | 王玉祖 | Spiral continuous counter-flow ultrasonic wave leaching extraction equipment |
| CN206910850U (en) * | 2017-04-26 | 2018-01-23 | 张占山 | Production of inorganic equipment |
| CN207259557U (en) * | 2017-07-20 | 2018-04-20 | 长沙矿冶研究院有限责任公司 | A kind of spiral leaching device |
| CN208716857U (en) * | 2018-07-29 | 2019-04-09 | 河北铸合集团兴隆县矿业有限公司 | Leaching device is used in a kind of extraction of rubidium cesium salt |
| CN209941064U (en) * | 2019-05-08 | 2020-01-14 | 石家庄冀鑫锌业有限公司 | Rotary furnace screw conveying scraper is used in zinc oxide production |
| KR102099048B1 (en) * | 2019-09-10 | 2020-04-08 | 측천산업(주) | Drum type heavy metal release reactor for compact type remediation system of complex contaminated soils |
| CN212375342U (en) * | 2020-07-24 | 2021-01-19 | 承德石油高等专科学校 | Industrial soil rubidium salt extraction and leaching device |
-
2020
- 2020-07-24 CN CN202010725138.3A patent/CN111733335A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1069845A1 (en) * | 1982-11-29 | 1984-01-30 | Грузинский Научно-Исследовательский Институт Пищевой Промышленности | Irrigation extractor |
| CN2401245Y (en) * | 2000-01-12 | 2000-10-18 | 王玉祖 | Spiral continuous counter-flow ultrasonic wave leaching extraction equipment |
| CN206910850U (en) * | 2017-04-26 | 2018-01-23 | 张占山 | Production of inorganic equipment |
| CN207259557U (en) * | 2017-07-20 | 2018-04-20 | 长沙矿冶研究院有限责任公司 | A kind of spiral leaching device |
| CN208716857U (en) * | 2018-07-29 | 2019-04-09 | 河北铸合集团兴隆县矿业有限公司 | Leaching device is used in a kind of extraction of rubidium cesium salt |
| CN209941064U (en) * | 2019-05-08 | 2020-01-14 | 石家庄冀鑫锌业有限公司 | Rotary furnace screw conveying scraper is used in zinc oxide production |
| KR102099048B1 (en) * | 2019-09-10 | 2020-04-08 | 측천산업(주) | Drum type heavy metal release reactor for compact type remediation system of complex contaminated soils |
| CN212375342U (en) * | 2020-07-24 | 2021-01-19 | 承德石油高等专科学校 | Industrial soil rubidium salt extraction and leaching device |
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