CN113957267A - Method for extracting rubidium salt from soil - Google Patents
Method for extracting rubidium salt from soil Download PDFInfo
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- CN113957267A CN113957267A CN202010707872.7A CN202010707872A CN113957267A CN 113957267 A CN113957267 A CN 113957267A CN 202010707872 A CN202010707872 A CN 202010707872A CN 113957267 A CN113957267 A CN 113957267A
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- 150000003297 rubidium Chemical class 0.000 title claims abstract description 56
- 239000002689 soil Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000002245 particle Substances 0.000 claims abstract description 27
- 238000002386 leaching Methods 0.000 claims abstract description 18
- 230000009467 reduction Effects 0.000 claims abstract description 16
- 239000012266 salt solution Substances 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 239000000243 solution Substances 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims abstract description 4
- 239000004927 clay Substances 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 18
- 239000001110 calcium chloride Substances 0.000 claims description 18
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 18
- 238000000227 grinding Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- 238000007654 immersion Methods 0.000 claims description 6
- 238000000498 ball milling Methods 0.000 claims description 4
- 239000008187 granular material Substances 0.000 claims description 4
- 238000007873 sieving Methods 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000000605 extraction Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 229910052701 rubidium Inorganic materials 0.000 description 28
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 28
- 238000006722 reduction reaction Methods 0.000 description 11
- FGDZQCVHDSGLHJ-UHFFFAOYSA-M rubidium chloride Chemical compound [Cl-].[Rb+] FGDZQCVHDSGLHJ-UHFFFAOYSA-M 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 3
- 239000012267 brine Substances 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 235000010755 mineral Nutrition 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 229910052700 potassium Inorganic materials 0.000 description 3
- 239000011591 potassium Substances 0.000 description 3
- 229940102127 rubidium chloride Drugs 0.000 description 3
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 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 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910052792 caesium Inorganic materials 0.000 description 2
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010438 granite Substances 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 229910052629 lepidolite Inorganic materials 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000011833 salt mixture Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010423 industrial mineral Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- RYZCLUQMCYZBJQ-UHFFFAOYSA-H lead(2+);dicarbonate;dihydroxide Chemical compound [OH-].[OH-].[Pb+2].[Pb+2].[Pb+2].[O-]C([O-])=O.[O-]C([O-])=O RYZCLUQMCYZBJQ-UHFFFAOYSA-H 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000004181 pedogenesis Methods 0.000 description 1
- 229940072033 potash Drugs 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
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Images
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
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a method for extracting rubidium salt from soil, fills the blank of the field of extracting rubidium salt from soil at home and abroad, has an epoch-spanning significance, and compared with the extraction of rubidium salt from ore, the extraction of soil is more convenient and faster than the extraction and utilization of ore, the production cost is low, the pollution is lower, and the method has good popularization value. The method specifically comprises the following steps: s1: crushing soil to form soil particles; s2: the soil particles and the displacing agent are uniformly mixed according to a proportion; s3: performing rubidium salt reduction treatment on the mixture obtained in S2 to obtain a rubidium salt reduced product; s4: subjecting the rubidium salt reduced product to liquid leaching treatment; s5: filtering the solution of step S4 to obtain a rubidium salt solution; s6: and extracting the rubidium salt solution to obtain solid rubidium salt.
Description
Technical Field
The invention relates to the technical field of metallurgy and mineral extraction, in particular to a method for extracting rubidium salt from soil.
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% rubidium content in seawater is 0.12 g/ton, and many formation water and salt lake brine also contain rubidium.
Rubidium is between potassium and cesium, is extremely active in nature, is a silver white waxy metal, is soft and light, can immediately lose the color of the metal when exposed to air, is severely oxidized by oxygen, and can cause spontaneous combustion of rubidium. The reaction is quite violent when exposed to water and even when exposed to ice at-100 ℃. Rubidium is more chemically reactive and more reactive than sodium and potassium.
Rubidium has irreplaceable use in many fields due to its unique physicochemical properties. With the development of high and new technology industries such as energy industry, atomic energy industry, bioengineering, aerospace industry, national defense industry and the like, rubidium metal and compounds thereof have great development in the traditional application fields such as biochemistry, catalysts, molecular biology, electronic devices, phototubes, special glass, medicines and the like in recent ten years; rubidium also shows strong vitality in new application fields such as magnetohydrodynamic power generation, thermionic conversion power generation, ion propulsion engines, and laser energy conversion electric energy devices.
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.
However, in the prior art, the rubidium extraction technology is extracted from various tailings, or ores or salt lake brine, a large amount of acid-base solution is used in the extraction process, the production cost is high, the production of rubidium ore becomes a new pollution source of the natural environment, and meanwhile, the rubidium crust content is low, so that the price is high, the rubidium resource is deficient, and the development of modern industry is limited.
Actual exploration shows that the soil in a partial region of Hebei Chengdu area is rich in rubidium elements and has mining value, no technical scheme for extracting rubidium salt from the soil exists in the prior art, and in view of the special physicochemical characteristics of the soil, how to provide a method for extracting rubidium salt from the soil fills the blank in the field, which is a technical problem to be solved by the technical staff in the field.
Disclosure of Invention
In view of the above, the present invention provides a method for extracting rubidium salt from soil, which solves the problems in the prior art, and the specific scheme is as follows:
a method for extracting rubidium salt from soil, comprising the steps of:
s1: crushing soil to form soil particles;
s2: the soil particles and the displacing agent are uniformly mixed according to a proportion;
s3: performing rubidium salt reduction treatment on the mixture obtained in S2 to obtain a rubidium salt reduced product;
s4: subjecting the rubidium salt reduced product to liquid leaching treatment;
s5: filtering the solution of step S4 to obtain a rubidium salt solution;
s6: and extracting the rubidium salt solution to obtain solid rubidium salt.
Specifically, the soil is selected from red clay, the displacer adopted in the step S2 is calcium chloride, and the liquid immersion treatment adopted in the step S4 is water immersion treatment.
Specifically, deionized water is used for the water immersion treatment in step S4.
Specifically, the component ratio of the calcium chloride to the red clay particles is 1: 0.5-1: 2.
Specifically, the component ratio of the calcium chloride to the red clay particles is 1: 1.3-1: 2.
Specifically, the calcium chloride is ground before being mixed with the red clay particles.
Specifically, the reduction treatment is reduction roasting, and the temperature of the reduction roasting is 700-1000 ℃.
Specifically, the reduction roasting temperature is 750-950 ℃.
Specifically, a grinding process is further provided between the steps S3 and S4.
Specifically, the soil formation red clay particles are specifically realized through the following steps:
s1-1: primary crushing;
s1-2: drying;
s1-3: ball milling and crushing;
s1-4: and (6) sieving.
The method for extracting rubidium salt from soil provided by the invention fills the blank of the field of extracting rubidium salt from soil at home and abroad, has an epoch-spanning significance, and compared with the extraction of rubidium salt from ore, the extraction of soil is more convenient and faster than the extraction and utilization of ore, the production cost is low, the pollution is lower, and the method has good popularization value.
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 diagram of a process for extracting rubidium mineral salt from soil provided by the invention.
FIG. 2 is a schematic diagram of a process for extracting rubidium mineral salt from soil according to an embodiment of the present invention.
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.
Referring to fig. 1, the invention claims a method for extracting rubidium salt from soil, comprising the following steps:
s1: crushing soil to form red clay particles;
s2: the soil particles and the displacing agent are uniformly mixed according to a proportion;
s3: performing rubidium salt reduction treatment on the mixture obtained in S2 to obtain a rubidium salt reduced product;
s4: subjecting the rubidium salt reduced product to liquid leaching treatment;
s5: filtering the solution of step S4 to obtain a rubidium salt solution;
s6: and extracting the rubidium salt solution to obtain solid rubidium salt.
The substitution agent can be calcium chloride, sodium chloride, potassium chloride, salts of other halogen elements, or acidic substances such as hydrochloric acid, nitric acid, sulfuric acid and the like.
As a specific embodiment of the present invention, referring to fig. 2, the substitution agent used in step S2 is calcium chloride, the soil is red clay specific to the chender region, the liquid leaching used in step S4 is water leaching, the water is immersed in a dedicated water leaching device, and the water leaching is performed using deionized water or distilled water, so as to prevent water quality with different ph values from affecting the water leaching effect and the leaching of rubidium salt and rubidium chloride.
Specifically, the component ratio of the calcium chloride to the red clay particles is 1: 0.5-1: 2. In order to obtain the optimal clay component ratio, a plurality of groups of experiments are carried out on red clay and calcium chloride with different components under the same condition to obtain different leaching rates of the greening rubidium, wherein the representative groups of data are as follows:
from the table above, the leaching rate of rubidium chloride increases with the increase of calcium chloride, and the ratio of industrial use components is recommended to be 1: 1.3-1: 2.
The calcium chloride with through grinding before the red clay granule mixes, the calcium chloride solid particle after grinding is more tiny, takes place comparatively even and comprehensive chemical reaction with red clay granule easily in follow-up technology, and the calcium chloride passes through the blender misce bene with red clay granule after smashing. In view of the deliquescent nature of calcium chloride, the above described grinding and mixing process laboratory can be carried out in a drying oven, and the industrial production line can strictly control the air humidity of the operating plant (the air humidity should be within 10%), thus ensuring an efficient rubidium salt extract.
The reduction treatment is reduction roasting, and the temperature of the reduction roasting is 700-1000 ℃. Setting the ratio of the red clay to the calcium chloride to be constant, and the other conditions to be unchanged, roasting the mixture obtained in the step S2 at different temperatures at the temperature of 700-1000 ℃, observing the leaching rate, and selecting representative rubidium salt leaching data as follows:
as can be seen from the above table, the rubidium salt leaching rate increases with increasing temperature, reaches a maximum value at 900 ℃, and then decreases with increasing temperature.
The reduction roasting temperature is recommended to be 750-950 ℃ in industrial production.
Further, a grinding process is provided between the steps S3 and S4. Various elements in the soil exist, and through a reduction reaction, various salts may exist in the rubidium salt mixture obtained in step S3, and the various salts may show an aggregation state, so that leaching of rubidium chloride is inhibited in the water leaching process, and in order to ensure that the rubidium salt can be sufficiently dissolved into water, the granular or blocky rubidium salt mixture is ground again, the grinding particle size is recommended to be 0.15mm-0.045mm, and each production enterprise may also perform grinding according to actual conditions, the smaller the grinding particle size is, the better the leaching effect is, and ideally, the rubidium salt dissolution rate may be as high as 95.6% or more.
Specifically, as a further improvement of this embodiment, the formation of the red clay particles by the red clay is achieved by the following steps:
s1-1: the primary grinding can be carried out by using agricultural mills or other grinding facilities which can meet the particle size requirements. If the red clay is in a wet state and cannot be crushed, primary crushing can be performed after primary drying. Here, the particle size of the crushed red clay is required to be within 0.15 mm.
S1-2: and (4) drying, namely drying the red clay particles with the granularity of 0.15mm in drying equipment, and performing subsequent processes when the detected water content is lower than 5%.
S1-3: and (3) ball milling and crushing, namely crushing the dried red clay particles of S1-2 by using a ball milling crusher for not less than 2 h.
S1-4: and (6) sieving. And (4) sieving the red clay particles obtained in the step (S1-3) to obtain the red clay particles with the particle size within 0.075 mm.
The soil quality in the method is not limited to red clay, and can be loess or black soil and the like, so that the method is suitable for the soil with the rubidium element content not lower than 50g/T, and the rubidium-containing soil with the rubidium element content lower than the rubidium element content has no mining value.
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 (10)
1. A method for extracting a rubidium salt from soil, comprising the steps of:
s1: crushing soil to form soil particles;
s2: the soil particles and the displacing agent are uniformly mixed according to a proportion;
s3: performing rubidium salt reduction treatment on the mixture obtained in S2 to obtain a rubidium salt reduced product;
s4: subjecting the rubidium salt reduced product to liquid leaching treatment;
s5: filtering the solution of step S4 to obtain a rubidium salt solution;
s6: and extracting the rubidium salt solution to obtain solid rubidium salt.
2. The method for extracting rubidium salt from soil according to claim 1, wherein: the soil is selected from red clay, the displacer adopted in the step S2 is calcium chloride, and the liquid immersion treatment adopted in the step S4 is water immersion treatment.
3. The method for extracting rubidium salt from soil according to claim 2, wherein: deionized water is adopted for water immersion treatment in the step S4.
4. The method for extracting rubidium salt from soil according to claim 2, wherein: the component ratio of the calcium chloride to the red clay particles is 1: 0.5-1: 2.
5. The method for extracting rubidium salt from soil according to claim 4, wherein: the component ratio of the calcium chloride to the red clay particles is 1: 1.3-1: 2.
6. The method for extracting rubidium salt from soil according to claim 2, wherein: the calcium chloride is ground before being mixed with the red clay particles.
7. The method for extracting rubidium salt from soil according to claim 2, wherein: the reduction treatment is reduction roasting, and the temperature of the reduction roasting is 700-1000 ℃.
8. The method for extracting rubidium salt from soil according to claim 2, wherein: the reduction roasting temperature is 750-950 ℃.
9. The method for extracting rubidium salt from soil according to claim 2, wherein: a grinding process is also provided between the steps S3 and S4.
10. Method for extracting rubidium salt from soil according to any one of claims 1 to 9, characterised in that said soil is formed into said red clay granules by two steps:
s1-1: primary crushing;
s1-2: drying;
s1-3: ball milling and crushing;
s1-4: and (6) sieving.
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| CN108677006A (en) * | 2018-06-06 | 2018-10-19 | 中南大学 | A method of extracting rubidium chloride from Kaolin Tailings |
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2020
- 2020-07-21 CN CN202010707872.7A patent/CN113957267A/en active Pending
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| CN106086470A (en) * | 2016-06-12 | 2016-11-09 | 宋玉军 | A kind of method obtaining rubidium salt with Kaolin Tailings for raw material |
| CN107475513A (en) * | 2016-07-11 | 2017-12-15 | 广州市光鼎矿业集团有限公司 | The method that rubidium potassium aluminium is leached from MICA containing rubidium |
| CN107267777A (en) * | 2017-06-09 | 2017-10-20 | 北京矿冶研究总院 | Novel method for extracting rubidium from rubidium-containing ore |
| CN108677006A (en) * | 2018-06-06 | 2018-10-19 | 中南大学 | A method of extracting rubidium chloride from Kaolin Tailings |
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