CN115572820A - Method for pretreating lepidolite before roasting - Google Patents
Method for pretreating lepidolite before roasting Download PDFInfo
- Publication number
- CN115572820A CN115572820A CN202211181850.7A CN202211181850A CN115572820A CN 115572820 A CN115572820 A CN 115572820A CN 202211181850 A CN202211181850 A CN 202211181850A CN 115572820 A CN115572820 A CN 115572820A
- Authority
- CN
- China
- Prior art keywords
- lepidolite
- vertical mill
- conveying
- roasting
- vertical
- 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
- 229910052629 lepidolite Inorganic materials 0.000 title claims abstract description 116
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000001035 drying Methods 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- 239000000428 dust Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 13
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 238000000227 grinding Methods 0.000 claims abstract description 9
- 238000003801 milling Methods 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 7
- 238000000605 extraction Methods 0.000 abstract description 4
- 238000005086 pumping Methods 0.000 abstract 1
- 238000012216 screening Methods 0.000 abstract 1
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 17
- 229910052808 lithium carbonate Inorganic materials 0.000 description 17
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 10
- 229910052744 lithium Inorganic materials 0.000 description 10
- 239000000243 solution Substances 0.000 description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 238000002386 leaching Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- INHCSSUBVCNVSK-UHFFFAOYSA-L lithium sulfate Inorganic materials [Li+].[Li+].[O-]S([O-])(=O)=O INHCSSUBVCNVSK-UHFFFAOYSA-L 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000012452 mother liquor Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- RBTVSNLYYIMMKS-UHFFFAOYSA-N tert-butyl 3-aminoazetidine-1-carboxylate;hydrochloride Chemical compound Cl.CC(C)(C)OC(=O)N1CC(N)C1 RBTVSNLYYIMMKS-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003456 ion exchange resin Substances 0.000 description 2
- 229920003303 ion-exchange polymer Polymers 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- CNLWCVNCHLKFHK-UHFFFAOYSA-N aluminum;lithium;dioxido(oxo)silane Chemical compound [Li+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O CNLWCVNCHLKFHK-UHFFFAOYSA-N 0.000 description 1
- VBIXEXWLHSRNKB-UHFFFAOYSA-N ammonium oxalate Chemical compound [NH4+].[NH4+].[O-]C(=O)C([O-])=O VBIXEXWLHSRNKB-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000002001 electrolyte material Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- -1 metallurgy Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- UOVHNSMBKKMHHP-UHFFFAOYSA-L potassium;sodium;sulfate Chemical compound [Na+].[K+].[O-]S([O-])(=O)=O UOVHNSMBKKMHHP-UHFFFAOYSA-L 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 229910052642 spodumene Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
- C22B1/06—Sulfating roasting
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D15/00—Lithium compounds
- C01D15/08—Carbonates; Bicarbonates
-
- 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
- C22B26/12—Obtaining lithium
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Metallurgy (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a method for pretreating lepidolite before roasting, and belongs to the technical field of lepidolite treatment. The method comprises the following steps: drying the lepidolite through a drying kiln, reducing the moisture to 4-10%, and conveying the dried lepidolite to a feed inlet of a vertical mill through a belt; adjusting the feeding frequency in the vertical mill, performing dust collection treatment on the vertically milled lepidolite through a screening device, conveying the vertically milled lepidolite to the next procedure, and pumping the incompletely vertically milled lepidolite back to the vertical mill for vertical milling again; discharging the vertically ground lepidolite through a discharge hole of a dust collector; mixing the lepidolite with qualified grain diameter after vertical grinding with sulfate, and then conveying the mixed material into a roasting kiln through a belt for conversion roasting. The method can improve the conversion rate of the low-grade lepidolite, reduce the cost of the lepidolite extraction process and has simple process.
Description
Technical Field
The invention belongs to the technical field of lepidolite treatment, and particularly relates to a method for pretreating lepidolite before roasting.
Background
Lithium carbonate is used as a basic raw material of most lithium products and is widely applied to the fields of glass, ceramics, metallurgy, chemical industry, electronics, medicine, batteries and the like. In recent years, the development of the lithium ion battery industry is more and more rapid, and battery grade lithium carbonate as a positive electrode material and an electrolyte material of a lithium battery is a focus of attention. While lithium batteries are rapidly developing, the demand for battery grade lithium carbonate is increasing. Currently, spodumene and lepidolite are generally used as raw materials for preparing lithium carbonate, and a salt lake lithium salt method is also used for preparing lithium carbonate. The sulfate method is a relatively simple and feasible method, the lepidolite ore and the sulfate are mixed and then roasted to extract lithium, the lepidolite cannot be pretreated before roasting, the lepidolite sulfate method has high requirement on the grade of the lepidolite, and the lepidolite is relatively rejected for low-grade lepidolite.
Yichun as Asian Li contains rich lepidolite ore, the lepidolite ore in the Yifeng area has good market lepidolite because of low grade and coarse grain size, but the low-grade ore is not accepted by various companies, namely, the recovery rate of the low-grade ore is low, and the energy consumption is larger. Therefore, the method for researching the pretreatment process before the calcination of the lepidolite by improving the prior art has great significance in improving the conversion rate of the lepidolite, reducing the cost of the lepidolite extraction process, enabling the low-grade lepidolite to be accepted by the market, and increasing the selection of more raw materials for companies.
For example, patent No. CN108557848A (a method for preparing battery-grade lithium carbonate by using lepidolite) includes the following specific steps: 1) Mixing and heating the raw materials to 850-1100 ℃ to obtain lithium sulfate clinker; 2) Ball-milling to 200-300 meshes, adding water with the temperature of 50-60 ℃, and carrying out multistage filtering and washing to obtain lithium sulfate brine; 3) Adjusting pH to 9-11 with calcium hydroxide, adding sodium carbonate, filtering to remove impurities to obtain primary impurity-removed solution; adding ammonium oxalate, filtering and removing impurities to obtain secondary impurity-removed liquid; extracting with an extractant to obtain a purified solution, and reacting primary lithium carbonate; 5) And grinding and crushing the primary lithium carbonate to 500-600 meshes, and performing ion exchange to obtain the battery-grade lithium carbonate. For another example, patent No. CN113636579A (a novel process for preparing lithium carbonate by lepidolite sulfate roasting method) includes the following steps: ball-milling lepidolite, uniformly mixing the lepidolite with sodium potassium sulfate mixed salt, an auxiliary agent and calcium carbonate according to a certain proportion, granulating by using a granulator, then sending the obtained mixture to a rotary kiln for roasting, cooling the roasted material, wet-milling by using a ball mill, feeding the cooled roasted material into a leaching kettle, heating by using circulating water for water leaching, adding the obtained lithium sulfate mother liquor into a saturated sodium carbonate solution after neutralization, impurity removal, evaporation and concentration, and performing lithium precipitation reaction to obtain a crude lithium carbonate product; and stirring the crude lithium carbonate for two times, drying and crushing to obtain the battery-grade lithium carbonate. For another example, patent No. CN112142081A (a method for preparing battery grade lithium carbonate using lepidolite) specifically includes: adding a defluorinating agent to defluorinate lepidolite after roasting and leaching, removing calcium and magnesium through chelating ion exchange resin after concentrating to obtain refined lithium solution, adding the refined lithium solution into refined sodium carbonate solution of which the calcium and magnesium are removed through chelating ion exchange resin, reacting, and settling to obtain crude lithium carbonate and lithium-settling mother liquor; and (3) concentrating and evaporating the lithium precipitation mother liquor, adding the frozen salt precipitation into the refined lithium solution for recycling, washing lithium from the coarse lithium carbonate, precipitating, centrifugally separating, drying, crushing by air flow, mixing and packaging to obtain the battery-grade lithium carbonate. No pretreatment of lepidolite was performed by any of the above techniques.
Disclosure of Invention
The invention aims to provide a method for pretreating lepidolite before roasting, aiming at the problems of low recovery rate and high extraction process cost of low-grade lepidolite ore in the prior art.
In order to achieve the purposes, the specific scheme is as follows:
drying the lepidolite through a drying kiln, reducing the moisture to 4-10%, and conveying the dried lepidolite to a feed inlet of a vertical mill through a belt;
adjusting the feeding amount of the vertical mill and the frequency of the vertical mill classifier, ensuring the vertical milling effect of the lepidolite in the vertical mill, feeding the lepidolite after the vertical mill with the granularity by a dust collector, and then conveying the lepidolite after the vertical mill to the next process;
discharging the vertically-ground lepidolite through a discharge hole of a dust collector, conveying the lepidolite into a lepidolite buffer bin through a belt, and simultaneously carrying out particle size tracking test on the vertically-ground lepidolite;
mixing the lepidolite with qualified grain size after vertical grinding with sulfate, and then conveying the mixed material into a roasting kiln through a belt for conversion roasting.
Preferably, the temperature of the drying kiln in the step 1) is 140-160 ℃.
Preferably, the feeding amount in the step 2) is 25 to 30 tons per hour.
Preferably, the particle diameter of the lepidolite after the step 3) of vertical milling is more than 90 percent and passes through 100 meshes.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a method for pretreating lepidolite before roasting, which is characterized in that the lepidolite can fully react with auxiliary materials by improving the technology, the conversion rate of the lepidolite in the roasting process is increased, the conversion rate of a roasted material obtained after roasting is increased by more than 5% compared with that of the lepidolite before pretreatment, the cost of a lepidolite extraction process is reduced, the process is simple, and the particle size tracking test of the lepidolite after vertical grinding can avoid the influence on the filtering effect in the process of leaching and filtering.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will aid those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any manner. It should be noted that variations and modifications, including any combination of examples, may occur to those skilled in the art without departing from the spirit of the invention.
Example 1
Drying the lepidolite in a drying kiln at the drying temperature of 150 ℃, reducing the moisture to 4 percent, and conveying the dried lepidolite to a feed inlet of a vertical mill by a belt;
adjusting the feeding amount of a vertical mill and the frequency of a vertical mill classifier, wherein the feeding amount is 25 tons per hour, ensuring the vertical milling effect of the lepidolite in the vertical mill, feeding the lepidolite after the vertical mill with the granularity reaching the standard through a dust collector, and then conveying the lepidolite after the vertical mill to the next working procedure;
discharging the vertically-ground lepidolite through a discharge hole of a dust collector, conveying the lepidolite into a lepidolite buffer bin through a belt, and simultaneously carrying out particle size tracking test on the vertically-ground lepidolite to enable the particle size of the vertically-ground lepidolite to reach more than 90% and pass through 100 meshes;
mixing the lepidolite with qualified grain size after vertical grinding with sulfate, and then conveying the mixed material into a roasting kiln through a belt for conversion roasting.
Example 2
Drying lepidolite in a drying kiln at the drying temperature of 140 ℃, reducing the moisture to 5 percent, and conveying the dried lepidolite to a feed inlet of a vertical mill by a belt;
adjusting the feeding amount of a vertical mill and the frequency of a vertical mill classifier, wherein the feeding amount is 25 tons per hour, ensuring the vertical milling effect of the lepidolite in the vertical mill, feeding the lepidolite after the vertical mill with the granularity reaching the standard through a dust collector, and then conveying the lepidolite after the vertical mill to the next working procedure;
discharging the vertically-ground lepidolite through a discharge hole of a dust collector, conveying the lepidolite into a lepidolite buffer bin through a belt, and simultaneously carrying out particle size tracking test on the vertically-ground lepidolite to enable the particle size of the vertically-ground lepidolite to reach more than 90% and pass through 100 meshes;
mixing the lepidolite with qualified grain size after vertical grinding with sulfate, and then conveying the mixed material into a roasting kiln through a belt for conversion roasting.
Example 3
Drying the lepidolite in a drying kiln at 160 ℃, reducing the moisture to 10 percent, and conveying the dried lepidolite to a feed inlet of a vertical mill by using a belt;
adjusting the feeding amount of a vertical mill and the frequency of a vertical mill classifier, wherein the feeding amount is 30 tons per hour, ensuring the vertical milling effect of the lepidolite in the vertical mill, feeding the lepidolite after the vertical mill with the granularity through a dust collector, and then conveying the lepidolite after the vertical mill to the next process;
discharging the vertically-ground lepidolite through a discharge hole of a dust collector, conveying the lepidolite into a lepidolite buffer bin through a belt, and simultaneously carrying out particle size tracking test on the vertically-ground lepidolite to enable the particle size of the vertically-ground lepidolite to reach more than 90% and pass through 100 meshes;
mixing the lepidolite with qualified grain diameter after vertical grinding with sulfate, and then conveying the mixed material into a roasting kiln through a belt for conversion roasting.
Example 4
Drying the lepidolite in a drying kiln at the drying temperature of 150 ℃, reducing the moisture to 8 percent, and conveying the dried lepidolite to a feed inlet of a vertical mill by a belt;
adjusting the feeding amount of a vertical mill and the frequency of a vertical mill classifier, wherein the feeding amount is 30 tons per hour, ensuring the vertical milling effect of the lepidolite in the vertical mill, feeding the lepidolite after the vertical mill with the granularity reaching the standard through a dust collector, and then conveying the lepidolite after the vertical mill to the next working procedure;
discharging the vertically-ground lepidolite through a discharge hole of a dust collector, conveying the vertically-ground lepidolite into a lepidolite buffer bin through a belt, and simultaneously carrying out particle size tracking test on the vertically-ground lepidolite to ensure that more than 90 percent of the particle size of the vertically-ground lepidolite passes through 100 meshes;
mixing the lepidolite with qualified grain diameter after vertical grinding with sulfate, and then conveying the mixed material into a roasting kiln through a belt for conversion roasting.
Comparative example 1
The mixed lepidolite material is put into a roasting kiln for conversion roasting by using the prior art.
The calcined materials of examples 1 to 4 and comparative example 1 were tested for lepidolite conversion, and the results are shown in Table 1 below
TABLE 1
| Sample(s) | Example 1 | Example 2 | Example 3 | Example 4 | Comparative example 1 |
| Conversion rate | 85.71％ | 83.13％ | 84.21％ | 82.52％ | 74.83％ |
It is found from table 1 that the conversion rate of lepidolite is improved by more than 5% after pretreatment.
The foregoing is only an embodiment of the present invention, and it should be noted that a person skilled in the art may make various changes, modifications, substitutions and alterations to the embodiment without departing from the technical principles of the present invention, and such changes, modifications, substitutions and alterations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A method for pretreating lepidolite before roasting is characterized by comprising the following steps of,
1) Drying the lepidolite through a drying kiln, reducing the moisture to 4-10%, and conveying the dried lepidolite to a feed inlet of a vertical mill through a belt;
2) Adjusting the feeding amount of the vertical mill and the frequency of the vertical mill classifier, ensuring the vertical milling effect of the lepidolite in the vertical mill, feeding the lepidolite after the vertical mill with the granularity by a dust collector, and then conveying the lepidolite after the vertical mill to the next process;
3) Discharging the vertically-ground lepidolite through a discharge hole of a dust collector, conveying the lepidolite into a lepidolite buffer bin through a belt, and simultaneously carrying out particle size tracking test on the vertically-ground lepidolite;
4) Mixing the lepidolite with qualified grain diameter after vertical grinding with sulfate, and then conveying the mixed material into a roasting kiln through a belt for conversion roasting.
2. The method for pretreating lepidolite before roasting of claim 1, wherein the temperature of the drying kiln in step 1) is 140-160 ℃.
3. The method of claim 1, wherein the amount of the feed in step 2) is 25 to 30 tons per hour.
4. The method for pretreating lepidolite before roasting according to claim 1, wherein the particle size of the vertically milled lepidolite in step 3) is more than 90% passing 100 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211181850.7A CN115572820A (en) | 2022-09-27 | 2022-09-27 | Method for pretreating lepidolite before roasting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211181850.7A CN115572820A (en) | 2022-09-27 | 2022-09-27 | Method for pretreating lepidolite before roasting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115572820A true CN115572820A (en) | 2023-01-06 |
Family
ID=84582973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211181850.7A Pending CN115572820A (en) | 2022-09-27 | 2022-09-27 | Method for pretreating lepidolite before roasting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115572820A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB269878A (en) * | 1926-04-22 | 1927-09-08 | Metallbank & Metallurg Ges Ag | Process of treating lithium-containing silicates by means of neutral alkali salts |
| DE569147C (en) * | 1930-05-07 | 1933-02-04 | Metallgesellschaft Ag | Process for the digestion of minerals containing lithium |
| CN110042225A (en) * | 2019-04-26 | 2019-07-23 | 核工业北京化工冶金研究院 | A kind of roasting of lepidolite ore sodium sulphate and leaching method |
| CN110885090A (en) * | 2019-12-31 | 2020-03-17 | 江西南氏锂电新材料有限公司 | Method for preparing battery-grade lithium carbonate by using lepidolite as raw material through one-step method |
| GB202109645D0 (en) * | 2021-07-02 | 2021-08-18 | British Lithium Ltd | Process for the recovery and reuse of sulphate reagents from brines derived from lithium micas |
| CN114751433A (en) * | 2022-04-21 | 2022-07-15 | 江西九岭锂业股份有限公司 | Technological method for ultra-efficient and deep lithium extraction of lepidolite |
-
2022
- 2022-09-27 CN CN202211181850.7A patent/CN115572820A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB269878A (en) * | 1926-04-22 | 1927-09-08 | Metallbank & Metallurg Ges Ag | Process of treating lithium-containing silicates by means of neutral alkali salts |
| DE569147C (en) * | 1930-05-07 | 1933-02-04 | Metallgesellschaft Ag | Process for the digestion of minerals containing lithium |
| CN110042225A (en) * | 2019-04-26 | 2019-07-23 | 核工业北京化工冶金研究院 | A kind of roasting of lepidolite ore sodium sulphate and leaching method |
| CN110885090A (en) * | 2019-12-31 | 2020-03-17 | 江西南氏锂电新材料有限公司 | Method for preparing battery-grade lithium carbonate by using lepidolite as raw material through one-step method |
| GB202109645D0 (en) * | 2021-07-02 | 2021-08-18 | British Lithium Ltd | Process for the recovery and reuse of sulphate reagents from brines derived from lithium micas |
| CN114751433A (en) * | 2022-04-21 | 2022-07-15 | 江西九岭锂业股份有限公司 | Technological method for ultra-efficient and deep lithium extraction of lepidolite |
Non-Patent Citations (1)
| Title |
|---|
| 秦伍;王念峰;黄珍媛;张翼;: "锂云母提锂工艺的研究进展", 佛山陶瓷, no. 09, 15 September 2018 (2018-09-15) * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106745097B (en) | A kind of method from lepidolite concentrate extraction lithium | |
| CN106587116B (en) | A kind of method for extracting lithium carbonate and aluminium hydroxide using lepidolite and flyash | |
| CN110983071B (en) | Method for extracting lithium salt from low-grade lithium ore raw material | |
| CN102285673B (en) | Method for recovering lithium and iron from lithium iron phosphate power battery for electromobile | |
| CN113636579A (en) | Process for preparing lithium carbonate by novel lepidolite sulfate roasting method | |
| CN109336140B (en) | Process for extracting lithium by adding lithium iron phosphate into lepidolite | |
| CN105776191B (en) | A kind of production technology of spherical graphite | |
| CN109055723B (en) | method for directly extracting lithium from laponite raw material | |
| CN107032372A (en) | A kind of method that lithium is extracted from lepidolite concentrate | |
| CN112280976B (en) | Method for recycling valuable metals from laterite-nickel ore and regenerating and recycling acid | |
| CN113651342A (en) | Method for producing lithium product by processing lepidolite through nitric acid atmospheric pressure method | |
| CN112374512A (en) | Method for preparing battery-grade lithium carbonate by removing impurities from lepidolite clinker | |
| CN105271397A (en) | Production method of titanium dioxide capable of reducing water consumption | |
| CN109264751B (en) | Method for extracting lithium carbonate and ammonium metavanadate from lepidolite and vanadium-containing shale | |
| CN110407235B (en) | Preparation method of electric automobile-grade lithium hydroxide monohydrate | |
| CN111994926A (en) | Environment-friendly recovery method of lithium ion battery anode material | |
| CN111455176B (en) | Method for recovering waste lithium cobaltate positive electrode material | |
| CN115572820A (en) | Method for pretreating lepidolite before roasting | |
| CN114890443A (en) | System and process method for high-value utilization of lithium-containing waste | |
| CN110835679B (en) | Method for preparing granular spodumene by granulating fine powder spodumene | |
| CN116829745B (en) | Method for selectively extracting lithium from sedimentary type lean lithium clay and application thereof | |
| CN206607292U (en) | A kind of dedicated system for handling metallized pellet | |
| CN112850756B (en) | Method for extracting and preparing high-purity anhydrous lithium sulfate solid from byproduct mirabilite of lithium smelting enterprise | |
| CN115286024B (en) | Resource recycling method and system for producing salt mud by chlor-alkali | |
| CN115432722B (en) | Lithium circulating system and preparation method of positive electrode material precursor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |