CN110195159A - A kind of method that spodumene prepares alusil alloy and enriching lithium - Google Patents
A kind of method that spodumene prepares alusil alloy and enriching lithium Download PDFInfo
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- CN110195159A CN110195159A CN201910449918.7A CN201910449918A CN110195159A CN 110195159 A CN110195159 A CN 110195159A CN 201910449918 A CN201910449918 A CN 201910449918A CN 110195159 A CN110195159 A CN 110195159A
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- spodumene
- lithium
- lignite
- alusil alloy
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- 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 title claims abstract description 56
- 229910052642 spodumene Inorganic materials 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 35
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 34
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 26
- 239000000956 alloy Substances 0.000 title claims abstract description 26
- 229910000632 Alusil Inorganic materials 0.000 title claims abstract description 25
- 239000003077 lignite Substances 0.000 claims abstract description 26
- 239000004927 clay Substances 0.000 claims abstract description 10
- 238000010891 electric arc Methods 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 238000001354 calcination Methods 0.000 claims abstract description 8
- 238000009833 condensation Methods 0.000 claims abstract description 6
- 230000005494 condensation Effects 0.000 claims abstract description 6
- 238000000748 compression moulding Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000010792 warming Methods 0.000 claims description 5
- 229910052611 pyroxene Inorganic materials 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 16
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 9
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 9
- 229910052808 lithium carbonate Inorganic materials 0.000 description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 229910010199 LiAl Inorganic materials 0.000 description 4
- 229910007270 Si2O6 Inorganic materials 0.000 description 4
- 239000003500 flue dust Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 description 3
- 235000017550 sodium carbonate Nutrition 0.000 description 3
- 229910052644 β-spodumene Inorganic materials 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 159000000002 lithium salts Chemical class 0.000 description 2
- INHCSSUBVCNVSK-UHFFFAOYSA-L lithium sulfate Inorganic materials [Li+].[Li+].[O-]S([O-])(=O)=O INHCSSUBVCNVSK-UHFFFAOYSA-L 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000012452 mother liquor Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 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 2
- 230000007704 transition Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 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
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 241001417490 Sillaginidae Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 229910001863 barium hydroxide Inorganic materials 0.000 description 1
- MVYYDFCVPLFOKV-UHFFFAOYSA-M barium monohydroxide Chemical compound [Ba]O MVYYDFCVPLFOKV-UHFFFAOYSA-M 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000001471 micro-filtration Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000009856 non-ferrous metallurgy Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- -1 refrigeration Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 230000001180 sulfating effect Effects 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
- 229910052643 α-spodumene Inorganic materials 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
- C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
- C22B26/10—Obtaining alkali metals
- C22B26/12—Obtaining lithium
-
- 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
- C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
- C22B4/06—Alloys
-
- 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
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of methods that spodumene prepares alusil alloy and enriching lithium to be mixed lignite and spodumene in the ratio of C in lignite and 6~7:1 of molar ratio of spodumene, while adding clay, is mixed；It will be calcined in electric arc furnaces after mixture compression moulding；The volatile matter for collecting calcining obtains rich lithium ash, obtains alusil alloy after calcined product condensation；The present invention has many advantages, such as that raw material is easy to get, reaction temperature is low, process is short, simple process, easy to operate, at low cost, no pollution to the environment.
Description
Technical field
The invention belongs to non-ferrous metallurgy fields, are related to the technique of spodumene comprehensive utilization, prepared by specially spodumene
The method of alusil alloy and enriching lithium.
Background technique
In recent years, with the development of national economy, the excellent properties of the compound of lithium and lithium are increasingly by the pass of people
Note, is not only widely used in the traditional fields such as medicine, glass, refrigeration, ceramics, atomic energy, metallurgical industry and war industry, but also
In modern high technology field in terms of such as lithium-base alloy, light alloy, nuclear fusion, aerospace, novel high-energy
It is widely used.
Spodumene is China's production most important raw material of battery-level lithium carbonate, and various spodumene production technologies require pair
Spodumene carries out transition roasting, i.e., spodumene crystalline form is made the transition from α state into β state by the means of high-temperature roasting, subsequent to pass through again
Concentrated sulfuric acid roasting, lime burning, sulfating roasting, chloride roasting or the means of different such as soda ash autoclaving, lithium from solid
It is proposed in lattice, and then forms sulfuric acid process, lime sinter process, soda ash autoclaving method, sulfate process and chloride roasting method etc. and is raw
Production. art.
Application No. is the patents of invention of 201080065025.X to disclose a kind of method for manufacturing lithium carbonate, the method packet
Include: calcination α-spodumene mine or concentrate generate β-spodumene；Then ball milling is transferred to sulphur after mixing it with sulfuric acid after cooling down
It is acidified kiln, at high temperature, sulphation β-spodumene；β-spodumene of sulphation is gone into leach step, wherein by lithium sulfate
Extraction is in water；Then by a series of removal of impurities measure, the lithium carbonate and sulfuric acid mother liquid of sodium of precipitating are finally obtained.
Application No. is the patents of invention of 201110000790.X to disclose a kind of method for producing lithium carbonate and lithium hydroxide,
Its step is followed successively by a. spodumene concentrate: passing through 1050~1100 DEG C of high-temperature roastings, cooling, 98% concentrated sulfuric acid is added in fine grinding
It is acidizing fired and then pass through wet underwater welding at 250~300 DEG C, calcium, magnesium addition are removed, is concentrated by evaporation, obtains sulfuric acid after filters pressing
Then lithium solution produces lithium carbonate mother liquor again to obtain lithium carbonate；Barium hydroxide is added in lithium carbonate mother liquor also can be obtained
Lithium hydroxide.
Application No. is 201610364357.7 patents of invention to disclose a kind of sulfuric acid process lithium salts production new technique, comprising:
Spodumene concentrate is taken, is first roasted, then is cooled down, spodumene calcining is obtained；Ore grinding is carried out to spodumene calcining, obtains spodumene miberal powder；To
Sulfuric acid is added in spodumene miberal powder, roasts, obtains sour clinker；Calcium carbonate is added into sour clinker, obtains mixture, adds into mixture
Water, filtering, obtains lithium sulfate leachate；Again by measures such as microfiltration membrane impurity removal, addition soda ash, lithium carbonate finished product is prepared.
The above patent application is that lithium is extracted from spodumene using common sulfuric acid process, obtains lithium carbonate and lithium hydroxide
The product of equal lithium salt forms, and the aluminium and silicon in spodumene enter after filtering in slag, cause the waste of resource.The present invention uses
Electrothermal way smelts spodumene, and volatilization flue dust obtains the higher rich lithium ash of lithium content, can be used as the raw material that vacuum method prepares lithium metal；
Alusil alloy is obtained in condensed product, sufficiently the valuable metal in spodumene will be made to obtain comprehensive utilization.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of methods that spodumene prepares alusil alloy and enriching lithium, should
Method is using spodumene as raw material, and lignite is as reducing agent, and clay is as binder, directly extraction alusil alloy and extraction metal
Lithium, the method for the present invention have raw material is easy to get, reaction temperature is low, process is short, simple process, it is easily operated, at low cost, to environment without
The features such as pollution.
Technical scheme is as follows:
(1) using spodumene as raw material, using lignite as reducing agent, using clay as binder, by C in lignite and spodumene (LiAl
[Si2O6]) molar ratio be 6~7:1 ratio, lignite and spodumene are mixed, while adding clay, are mixed；
The main component and mass percent of the spodumene are as follows: Li2O 6.05~6.1%, Al2O326.5~30.0%, SiO2
60.31~61.0%, Fe2O33.05~4.01%；
The main component and mass percent of the lignite are as follows: ash content 22.91~23.5%, volatile matter 12.55~13.8% are fixed
Carbon 63.13~64.5%；
The additive amount of the clay is the 8~12% of lignite and spodumene gross mass；
(2) mixture will be calcined in electric arc furnaces after the mixture compression moulding in step (1)；
It is described calcining be under normal pressure, with 10~20 DEG C/min heating rate be warming up to 2000~2200 DEG C of reaction 30min~
60min makes spodumene and lignite in material that carbon-thermal reduction occur；
(3) volatile matter for collecting calcining obtains rich lithium ash, obtains alusil alloy after calcined product condensation.
The main component and percentage of alusil alloy made from the method for the present invention are as follows: 80.0~92.2wt% of silicon, aluminium 7~
22.7wt%, 0.45~0.6wt% of iron, impurity summation≤0.9wt%；28.0~35.0 wt% of lithium in gained richness lithium ash.
The advantages and positive effects of the present invention are as follows: the present invention be a kind of metallurgy method prepared from spodumene alusil alloy and
The method of enriching lithium, preparation condition are as follows: 2000~2200 DEG C of temperature, its significance lies in that utilizing lignite using spodumene as raw material
Make reducing agent, clay is binder, directly prepares alusil alloy and enriching lithium, compared with prior art there is raw material to be easy to get, instead
Answer the features such as temperature is low, process is short, simple process, easily operated, at low cost, no pollution to the environment.
Specific embodiment
Below by embodiment, invention is further described in detail, but the scope of the present invention is not limited in described
Hold.
Embodiment 1: this spodumene prepares alusil alloy and the method for enriching lithium is as follows:
By C in lignite and spodumene (LiAl [Si2O6]) molar ratio be 6.2:1 ratio lignite and spodumene are mixed, together
The clay of Shi Tianjia lignite and spodumene gross mass 8% mixes；Mixture is pressed into diameter 20mm, is highly the piece of 5-10mm
Shape material, is put into electric arc furnaces；Under normal pressure, 2200 DEG C are warming up to 20 DEG C/min heating rate and is calcined, and is kept the temperature
40min makes spodumene and lignite in material that carbon-thermal reduction occur, collects reduction flue dust, and obtained rich lithium ash component is shown in Table 1；
Electric arc furnaces is opened, obtains alusil alloy after the condensation of crucible bottom calcined product, ingredient is shown in Table 2；
The rich lithium ash component of table 1
2 alusil alloy ingredient of table
。
Embodiment 2: this spodumene prepares alusil alloy and the method for enriching lithium is as follows:
By C in lignite and spodumene (LiAl [Si2O6]) molar ratio be 7:1 ratio lignite and spodumene are mixed, simultaneously
The clay of lignite and spodumene gross mass 10% is added, is mixed；Mixture is pressed into diameter 20mm, is highly the piece of 5-10mm
Shape material, is put into electric arc furnaces；Under normal pressure, 2100 DEG C are warming up to 15 DEG C/min heating rate and is calcined, and is kept the temperature
60min makes spodumene and lignite in material that carbon-thermal reduction occur, collects reduction flue dust, and obtained rich lithium ash component is shown in Table 3；
Electric arc furnaces is opened, obtains alusil alloy after the condensation of crucible bottom calcined product, ingredient is shown in Table 4；
The rich lithium ash component of table 3
4 alusil alloy ingredient of table
。
Embodiment 3: this spodumene prepares alusil alloy and the method for enriching lithium is as follows:
By C in lignite and spodumene (LiAl [Si2O6]) molar ratio be 6.5:1 ratio lignite and spodumene are mixed, together
The clay of Shi Tianjia lignite and spodumene gross mass 11% mixes；Mixture is pressed into diameter 20mm, highly for 5-10mm's
Sheet material is put into electric arc furnaces；Under normal pressure, 2050 DEG C are warming up to 10 DEG C/min heating rate and is calcined, and is kept the temperature
60min makes spodumene and lignite in material that carbon-thermal reduction occur, collects reduction flue dust, and obtained rich lithium ash component is shown in Table 5；
Electric arc furnaces is opened, obtains alusil alloy after the condensation of crucible bottom calcined product, ingredient is shown in Table 6；
The rich lithium ash component of table 5
6 alusil alloy ingredient of table
。
Claims (3)
1. a kind of method that spodumene prepares alusil alloy and enriching lithium, it is characterised in that specific steps include:
(1) ratio for being 6~7:1 in the molar ratio of C in lignite and spodumene mixes lignite and spodumene, while adding viscous
Soil mixes；
(2) it will be calcined in electric arc furnaces after the mixture compression moulding of step (1)；
(3) volatile matter for collecting calcining obtains rich lithium ash, obtains alusil alloy after calcined product condensation.
2. the method that spodumene according to claim 1 prepares alusil alloy and enriching lithium, it is characterised in that: clay adds
Dosage is the 8~12% of lignite and spodumene gross mass.
3. the method that spodumene according to claim 1 prepares alusil alloy and enriching lithium, it is characterised in that: calcining be
Under normal pressure, 2000~2200 DEG C of reaction 30min~60min are warming up to 10~20 DEG C/min heating rate, make the lithium in material
Carbon-thermal reduction occurs for pyroxene and lignite.
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| CN201910449918.7A CN110195159A (en) | 2019-05-28 | 2019-05-28 | A kind of method that spodumene prepares alusil alloy and enriching lithium |
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| CN112111660A (en) * | 2020-08-10 | 2020-12-22 | 昆明理工大学 | Method for enriching lithium from lithium ore and preparing ferro-silicon alloy and recycling aluminum oxide |
| CN114015873A (en) * | 2021-09-18 | 2022-02-08 | 昆明理工大学 | Method for preparing manganese-silicon alloy from lithium ore and enriching lithium |
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