CN103290217A - Technology for extracting lithium by processing lithium ores through high-pressure steaming process - Google Patents
Technology for extracting lithium by processing lithium ores through high-pressure steaming process Download PDFInfo
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Abstract
The invention discloses a technology for extracting lithium by processing lithium ores through a high-pressure steaming process. The technology comprises the following steps: mixing lithium ore powder with a powdery solid strong alkali for 20-40min to uniformity, directly letting in high-pressure steam, and carrying out dissolving and reacting of the powdery solid strong alkali and the lithium ores through utilizing water in the high-pressure water at a high temperature under a high pressure to completely generate soluble substances. In the invention, the strong alkali in the above reaction materials dissolves through absorbing water molecules in the water steam, so the application amount of the strong alkali can be substantially reduced, and the cost is saved. Lithium, sodium, potassium, rubidium and cesium ions in the lithium ores can be completely dissolved in a solution, so the lithium extraction is convenient, and the lithium yield is high. Fluorine in the lithium ores does not form strong-corrosion hydrofluoric acid corroding apparatuses. Reaction byproducts comprising an alumina sol and a silica sol can be directly sold, so the lithium extraction reaction cost is correspondingly reduced.
Description
Technical field
The present invention relates to a kind of high pressure steam process processing lithium ore and put forward lithium technology, belong to field of metallurgy.
Background technology
There is abundant lithium resource in China, and the triphane in cocoa holder sea, Xinjiang, Northwest Sichuan area and the lithionite of Yichuan etc. all have abundant lithium resource to treat in utilization.The present lithium industrial expansion of China is mainly carried lithium from triphane and lithionite, main method comprises: 1, sulfatizing roasting method vitriolate of tartar roasting method is that German Wadmen at first proposes, Frankfort Metallurgical Factory is further developed, and is widely used in the lithium ore and carries lithium production Quilonum Retard.But this method sylvite consumption is very big and require very strict to maturing temperature.The characteristics that China's Guangzhou Research Institute of Nonferrous Metals is high according to potassium content in the Yichun lithia mica, one or two sections leaching novel techniques of sulphate process roasting have been studied, novel process has roasting and adds materials few, roasting time and extraction time are short, leach liquor lithium concentration height, steam output is little, energy consumption is low, sylvite can recycle etc. advantage, but have ring formation in the kiln, the aluminium in the lithionite, elements such as silicon such as can not rationally utilize at deficiency.2, to handle lithionite be the at first roasting under 150-300 ℃ of condition with lithionite concentrate and the vitriol oil to the sulfuric acid process sulfuric acid process, and product of roasting carries out re-baking in 800 ℃ again, makes the lithium in the lithionite be converted to water-soluble Lithium Sulphate.The advantage of sulfuric acid process is that logistics capacity is little, material does not need fine grinding after lithionite and the roasting, and solid-liquid easily mixes mutually, leach simple, the rate of recovery height of lithium, potassium, leach liquor lithium concentration height, steam output are little.The vitriol oil was decomposed to form acid mist when shortcoming was roasting, and atmosphere is polluted, and needed the equipment acid-resistant anti-corrosion.Because the vitriol oil has destroyed the structure of lithionite, cause part aluminium stripping in the lithionite, need mass consumption sodium hydroxide during except aluminium, and because the existence of alumine hydroxide colloid makes the material filtering performance become very poor, spent acid is difficult to reclaim simultaneously, does not possess competitive edge economically.3, lime burning method lime burning method be exactly lithionite concentrate and Wingdale is levigate respectively after, turning round roasting in kilns than in mechanical slot, mixing the back material with coal dust etc. by metering, maturing temperature control is at 940-1050 ℃, after roasting is finished, water leaches at normal temperatures, and the alkali metal in the lithionite all is present in the leach liquor with hydroxide form.Present method advantage is that technical process is simple, need not consume valuable industrial chemicals, and the leaching product is lithium hydroxide, can be directly used in the production Quilonum Retard.Shortcoming is that logistics capacity is big, and the quantity of slag is big especially, energy consumption is high, and the rate of recovery of lithium is relatively low, because economic benefit is not remarkable, this production technique is abroad eliminated already.4, sodium-chlor, sodium sulfate press cooking method lithionite concentrate about 900 ℃, in rotary kiln, feed water vapor defluorinate roasting, boil 3h with sodium-chlor or sodium sulfate 240 ℃ of pressures then, the solubility rate of Lithium Oxide 98min can reach more than 95%, and leach liquor advanced to purify to concentrate the available soda ash sinker in back.A large amount of reprocessing cycle are used because sodium-chlor and sodium sulfate can be water-soluble, thus this technology have logistics capacity little, press boil the back quantity of slag little, press boil after good, the filtered liquid lithium concentration height of material filtering performance, washing times few, low power consumption and other advantages.But it is very high that this method requires equipment anticorrosion, and particularly sodium-chlor presses cooking method more serious to equipment corrosion.5, alkali solution technique lithionite and highly basic react under liquid environment, and lithium, sodium, potassium, rubidium, caesium in the lithionite are entered in the solution, and after the lithionite powder was molten by alkali, ion-exchange was passed through in dilution again, captures the positively charged ion in the system.Its advantage is: can allow the lithium 100% in the lithionite enter (lithionite reaction filter residue returns the molten operation of alkali, realizes that complete alkali is molten) in the solution.Because be to react under the alkaline liquid environment, the fluorine in the lithionite can not generate the hydrofluoric acid etching apparatus of deep-etching.Byproduct is the aluminium silicon sol that extensive use is arranged, and the direct marketing by the aluminium silicon sol can reduce the cost of proposing the lithium reaction greatly.Shortcoming is that the water absorbability of lithium ore powder is strong, in order to keep the high density of highly basic, can keep to be reflected under the liquid environment and carries out just must add excessive strong base solution, and its consequence is exactly that highly basic is excessive more, and cost rises, and follow-up alkali recovery process is handled loaded down with trivial details.
Along with the progress of science and technology, the application of the compound of lithium and lithium in scientific domain is more and more wide, and particularly aspect lithium ion battery, lithium has irreplaceable effect.China's lithium resource is abundant, utilizes new technologies and methods novel method development and use lithium ore not only can create tangible economic benefit, reduces the dependence to external Quilonum Retard, has also prevented the idle waste of resource simultaneously.
Summary of the invention
The present invention is directed to above problem, proposed a kind of high pressure steam process processing lithium ore and put forward the lithium processing method.The present invention proposes to utilize high pressure steam process to handle the method for lithium ore first, be raw material with lithium ore powder and powdery solid highly basic, utilize the water molecules dissolved solids highly basic in the high pressure steam, around the lithium ore, produce high local concentrations, under the situation of High Temperature High Pressure, solid alkali reacts while dissolving, and is converted into soluble substance fully until reaching the lithium ore powder.This method can reduce the highly basic addition in the reaction largely, reduces reaction cost, simplifies the difficulty that excess base is reclaimed in aftertreatment, simultaneously, jellyfish liquid recycles in this production technique, and no waste water and gas produces, byproduct is fully utilized, can realize environmental requirement.
Technical scheme of the present invention is: a kind of high pressure steam process is handled the lithium ore and is put forward lithium technology, lithium ore powder and the mixing of powdery solid highly basic 20-40 minute are after evenly, directly feed high pressure steam, utilize the moisture in the high pressure steam, powdery solid highly basic in the reactant is reacted while dissolving, under the condition of High Temperature High Pressure, generate complete soluble substance with the reaction of lithium ore.
High pressure steam process is handled the lithium ore and is put forward lithium technology, the lithium ore powder, the powdery solid highly basic that the steps include: 1. will be crushed to more than 100 orders are even by weight the mixed of lithium ore powder: highly basic=1:0.5～5, put in the reactor, start stirring, adopt straight-through method to feed high pressure steam, utilize the moisture in the high pressure steam to participate in reaction, make lithium ore powder and highly basic high-temperature high-voltage reaction 2～8 hours under the effect of water vapor, cooling, discharging; 2. reaction product is diluted with water to mass percent concentration 0.1%～25%, with Zeo-karb the material after diluting is carried out ion-exchange, and the positively charged ion in the acquisition system comprises sodium ion, potassium ion, lithium ion, cesium ion and rubidium ion; Remaining aluminium silicon sol adds small amounts of sodium hydroxide again and makees stablizer by anionite-exchange resin, regulates PH=8～10, and crystallization, concentrated obtains the direct marketing of aluminium silicon sol finished product; 3. adsorbed the at first water cleaning of cationic ion exchange resin, used 2%～10% diluted acid drip washing again, be neutral with pure water drip washing to elutant at last; 4. to be concentrated to Li+ concentration earlier be 20～50g/L to elutant, is that 40%～70% wt% yellow soda ash reacted 40～100 minutes under 80 ℃～100 ℃ temperature with concentration then, obtains the Quilonum Retard precipitation, filter, and washing, oven dry makes standard compliant technical grade Quilonum Retard.
Highly basic comprises sodium hydroxide, potassium hydroxide.The lithium ore comprises lithionite, triphane.The temperature of high pressure steam is 100～374 ℃, and pressure is 0.1～22MPa.
The invention has the advantages that: 1, the water molecules that highly basic in the reaction mass absorbs in the water vapour dissolves, can around the lithium ore, form high local concentrations, because level of response and speed and the alkali concn of lithium ore and highly basic, temperature, pressure is directly related, alkali concn is more big, react more fast, also more complete, like this, the lithium ore generates soluble substance with the reaction of high density highly basic under High Temperature High Pressure, along with the continuous dissolving of highly basic, reaction is constantly carried out, therefore, this method has overcome the deficiency of " alkali solution technique is handled the method that lithionite is carried lithium ", can significantly reduce the usage quantity of highly basic, has saved cost." alkali solution technique is handled the method that lithionite is carried lithium " is with lithium ore powder and strong base solution reaction, because the water absorbability of lithium ore powder is strong, in order to keep the high density of highly basic, must add excessive strong base solution just can keep to be reflected under the liquid environment and carry out, its consequence is exactly that highly basic is excessive more, cost rises, and follow-up alkali recovery process is handled loaded down with trivial details.2, this technology can allow lithium, sodium, potassium, rubidium, cesium ion in the lithium ore dissolve fully to enter in the solution, makes that to carry lithium more convenient, and yield is higher.3, this technology is owing to be to react under alkaline environment, and the fluorine in the lithium ore can not generate the hydrofluoric acid etching apparatus of severe corrosive.4, byproduct of reaction aluminium silicon sol can direct marketing, has correspondingly reduced the cost of proposing the lithium reaction.
Description of drawings
Fig. 1 represents that the high pressure steam process that the present invention relates to handles the lithium ore and carry the lithium process flow diagram.
Embodiment
High pressure steam process is handled the lithium ore and is put forward the lithium Technology, it is characterized in that: carry out according to the following steps:
1. lithium ore powder, the powdery solid highly basic that crushes is mixed in proportion, put in the reactor, start powerful the stirring, adopt straight-through method to feed high pressure steam, utilize the moisture in the high pressure steam to participate in reaction, make lithium ore powder and highly basic high-temperature high-voltage reaction under the effect of water vapor, cooling, discharging.
2. the reaction product dilute with water carries out ion-exchange with Zeo-karb to the material after diluting, and the positively charged ion in the acquisition system comprises sodium ion, potassium ion, lithium ion, cesium ion and rubidium ion; Remaining aluminium silicon sol adds small amounts of sodium hydroxide again and makees stablizer by anionite-exchange resin, regulates PH, and crystallization, concentrated obtains the direct marketing of aluminium silicon sol finished product;
3. adsorbed the at first water cleaning of cationic ion exchange resin, used diluted acid drip washing again, be neutral with pure water drip washing to elutant at last;
4. elutant concentrates earlier, with the yellow soda ash reaction, obtains the Quilonum Retard precipitation then, filter, and washing, oven dry makes standard compliant technical grade Quilonum Retard.
The present invention is described in further detail below in conjunction with embodiment.
The lithionite that the embodiment of the invention is selected for use picks up from lithionite ore deposit, Yichuan, its main chemical compositions such as following table (wt%)
Yichun lithia mica composition detection data
| Form | Li 2O | Na 2O | K 2O | Rb 2P | Cs 2O | Al 2O 3 | SiO 2 | F | Vector burns |
| Content, % | 4.26 | 1.31 | 8.10 | 1.35 | 0.27 | 22.60 | 52.70 | 5.24 | 3.63 |
Embodiment 1:
(1) it is even by weight the mixed of lithionite powder: highly basic=1:0.5 to be crushed to 100 purpose lithionite powder, powdery solid highly basic, put in the reactor, start powerful the stirring, adopt straight-through method to feed high pressure steam, the high pressure steam temperature is 100 ℃, and pressure is 0.1MPa, utilize the moisture in the high pressure steam to participate in reaction, make lithium ore powder and highly basic high-temperature high-voltage reaction 2 hours under the effect of water vapor, cooling, discharging;
(2) reaction product is diluted with water to mass percent concentration 0.1%, with Zeo-karb the material after diluting is carried out ion-exchange, and the positively charged ion in the acquisition system comprises sodium ion, potassium ion, lithium ion, cesium ion and rubidium ion; Remaining aluminium silicon sol adds small amounts of sodium hydroxide again and makees stablizer by anionite-exchange resin, regulates PH=8, and crystallization, concentrated obtains the direct marketing of aluminium silicon sol finished product;
(3) adsorbed the at first water cleaning of cationic ion exchange resin, used 2% diluted acid drip washing again, be neutral with pure water drip washing to elutant at last;
(4) elutant is concentrated to Li+ concentration earlier to 20g/L,
(5) mother liquor after (4) step is concentrated adds concentration and is 40% yellow soda ash and reacted 40 minutes under 80 ℃ of temperature;
(6) with reacted material filtered while hot of (5) step, obtain the Quilonum Retard crude product, again through washing, oven dry makes standard compliant technical grade Quilonum Retard, and the solution after the filtration goes to put forward caesium, rubidium operation, washes lithium water and returns the preparation sodium carbonate solution.
Embodiment 2:
(1) it is even by weight the mixed of lithionite powder: highly basic=1:5 to be crushed to 700 purpose lithionite powder, powdery solid highly basic, put in the reactor, start powerful the stirring, adopt straight-through method to feed high pressure steam, the high pressure steam temperature is 180 ℃, and pressure is 1MPa, utilize the moisture in the high pressure steam to participate in reaction, make lithium ore powder and highly basic high-temperature high-voltage reaction 8 hours under the effect of water vapor, cooling, discharging;
(2) reaction product is diluted with water to mass percent concentration 0.1%, with Zeo-karb the material after diluting is carried out ion-exchange, and the positively charged ion in the acquisition system comprises sodium ion, potassium ion, lithium ion, cesium ion and rubidium ion; Remaining aluminium silicon sol adds small amounts of sodium hydroxide again and makees stablizer by anionite-exchange resin, regulates PH=10, and crystallization, concentrated obtains the direct marketing of aluminium silicon sol finished product;
(3) adsorbed the at first water cleaning of cationic ion exchange resin, used 5% diluted acid drip washing again, be neutral with pure water drip washing to elutant at last;
(4) elutant is concentrated to Li+ concentration earlier to 40g/L,
(5) mother liquor after (4) step is concentrated adds concentration and is 50% yellow soda ash and reacted 80 minutes under 90 ℃ of temperature;
(6) with reacted material filtered while hot of (5) step, obtain the Quilonum Retard crude product, again through washing, oven dry makes standard compliant technical grade Quilonum Retard, and the solution after the filtration goes to put forward caesium, rubidium operation, washes lithium water and returns the preparation sodium carbonate solution.
Embodiment 3:
(1) it is even by weight the mixed of lithionite powder: highly basic=1:3 to be crushed to 500 purpose lithionite powder, powdery solid highly basic, put in the reactor, start powerful the stirring, adopt straight-through method to feed high pressure steam, the high pressure steam temperature is 250 ℃, and pressure is 4MPa, utilize the moisture in the high pressure steam to participate in reaction, make lithium ore powder and highly basic high-temperature high-voltage reaction 5 hours under the effect of water vapor, cooling, discharging;
(2) reaction product is diluted with water to mass percent concentration 1%, with Zeo-karb the material after diluting is carried out ion-exchange, and the positively charged ion in the acquisition system comprises sodium ion, potassium ion, lithium ion, cesium ion and rubidium ion; Remaining aluminium silicon sol adds small amounts of sodium hydroxide again and makees stablizer by anionite-exchange resin, regulates PH=8, and crystallization, concentrated obtains the direct marketing of aluminium silicon sol finished product;
(3) adsorbed the at first water cleaning of cationic ion exchange resin, used 5% diluted acid drip washing again, be neutral with pure water drip washing to elutant at last;
(4) elutant is concentrated to Li+ concentration earlier to 50g/L,
(5) mother liquor after (4) step is concentrated adds concentration and is 50% yellow soda ash and reacted 60 minutes under 80 ℃ of temperature;
(6) with reacted material filtered while hot of (5) step, obtain the Quilonum Retard crude product, again through washing, oven dry makes standard compliant technical grade Quilonum Retard, and the solution after the filtration goes to put forward caesium, rubidium operation, washes lithium water and returns the preparation sodium carbonate solution.
Embodiment 4:
(1) it is even by weight the mixed of lithionite powder: highly basic=1:1.5 to be crushed to 200 purpose lithionite powder, powdery solid highly basic, put in the reactor, start powerful the stirring, adopt straight-through method to feed high pressure steam, the high pressure steam temperature is 280 ℃, and pressure is 6.4MPa, utilize the moisture in the high pressure steam to participate in reaction, make lithium ore powder and highly basic high-temperature high-voltage reaction 3 hours under the effect of water vapor, cooling, discharging;
(2) reaction product is diluted with water to mass percent concentration 12%, with Zeo-karb the material after diluting is carried out ion-exchange, and the positively charged ion in the acquisition system comprises sodium ion, potassium ion, lithium ion, cesium ion and rubidium ion; Remaining aluminium silicon sol adds small amounts of sodium hydroxide again and makees stablizer by anionite-exchange resin, regulates PH=8, and crystallization, concentrated obtains the direct marketing of aluminium silicon sol finished product;
(3) adsorbed the at first water cleaning of cationic ion exchange resin, used 2% diluted acid drip washing again, be neutral with pure water drip washing to elutant at last;
(4) elutant is concentrated to Li+ concentration earlier to 30g/L,
(5) mother liquor after (4) step is concentrated adds concentration and is 60% yellow soda ash and reacted 50 minutes under 90 ℃ of temperature;
(6) with reacted material filtered while hot of (5) step, obtain the Quilonum Retard crude product, again through washing, oven dry makes standard compliant technical grade Quilonum Retard, and the solution after the filtration goes to put forward caesium, rubidium operation, washes lithium water and returns the preparation sodium carbonate solution.
Embodiment 5:
(1) it is even by weight the mixed of lithionite powder: highly basic=1:1.5 to be crushed to 200 purpose lithionite powder, powdery solid highly basic, put in the reactor, start powerful the stirring, adopt straight-through method to feed high pressure steam, the high pressure steam temperature is 310 ℃, and pressure is 9.8MPa, utilize the moisture in the high pressure steam to participate in reaction, make lithium ore powder and highly basic high-temperature high-voltage reaction 3 hours under the effect of water vapor, cooling, discharging;
(2) reaction product is diluted with water to mass percent concentration 12%, with Zeo-karb the material after diluting is carried out ion-exchange, and the positively charged ion in the acquisition system comprises sodium ion, potassium ion, lithium ion, cesium ion and rubidium ion; Remaining aluminium silicon sol adds small amounts of sodium hydroxide again and makees stablizer by anionite-exchange resin, regulates PH=8, and crystallization, concentrated obtains the direct marketing of aluminium silicon sol finished product;
(3) adsorbed the at first water cleaning of cationic ion exchange resin, used 2% diluted acid drip washing again, be neutral with pure water drip washing to elutant at last;
(4) elutant is concentrated to Li+ concentration earlier to 30g/L,
(5) mother liquor after (4) step is concentrated adds concentration and is 60% yellow soda ash and reacted 50 minutes under 90 ℃ of temperature;
(6) with reacted material filtered while hot of (5) step, obtain the Quilonum Retard crude product, again through washing, oven dry makes standard compliant technical grade Quilonum Retard, and the solution after the filtration goes to put forward caesium, rubidium operation, washes lithium water and returns the preparation sodium carbonate solution.
Claims (5)
1. a high pressure steam process is handled the lithium ore and is put forward lithium technology, it is characterized in that: lithium ore powder and the mixing of powdery solid highly basic 20-40 minute are after evenly, directly feed high pressure steam, utilize the moisture in the high pressure steam, powdery solid highly basic in the reactant is reacted while dissolving, under the condition of High Temperature High Pressure, generate complete soluble substance with the reaction of lithium ore.
2. handle the lithium ore according to the described high pressure steam process of claim 1 and put forward lithium technology, the steps include:
Lithium ore powder, the powdery solid highly basic that 1. will be crushed to more than 100 orders are even by weight the mixed of lithium ore powder: highly basic=1:0.5～5, put in the reactor, start stirring, adopt straight-through method to feed high pressure steam, utilize the moisture in the high pressure steam to participate in reaction, make lithium ore powder and highly basic high-temperature high-voltage reaction 2～8 hours under the effect of water vapor, cooling, discharging; 2. reaction product is diluted with water to mass percent concentration 0.1%～25%, with Zeo-karb the material after diluting is carried out ion-exchange, and the positively charged ion in the acquisition system comprises sodium ion, potassium ion, lithium ion, cesium ion and rubidium ion; Remaining aluminium silicon sol adds small amounts of sodium hydroxide again and makees stablizer by anionite-exchange resin, regulates PH=8～10, and crystallization, concentrated obtains the direct marketing of aluminium silicon sol finished product; 3. adsorbed the at first water cleaning of cationic ion exchange resin, used 2%～10% diluted acid drip washing again, be neutral with pure water drip washing to elutant at last; 4. to be concentrated to Li+ concentration earlier be 20～50g/L to elutant, is that 40%～70% wt% yellow soda ash reacted 40～100 minutes under 80 ℃～100 ℃ temperature with concentration then, obtains the Quilonum Retard precipitation, filter, and washing, oven dry makes standard compliant technical grade Quilonum Retard.
3. handle the lithium ore according to the described high pressure steam process of claim 2 and put forward lithium technology, it is characterized in that: highly basic comprises sodium hydroxide, potassium hydroxide.
4. handle the lithium ore according to the described high pressure steam process of claim 2 and put forward lithium technology, it is characterized in that: the lithium ore comprises lithionite, triphane.
5. put forward lithium technology according to claim 1 or 2 described high pressure steam processes processing lithium ores, it is characterized in that: the temperature of high pressure steam is 100～374 ℃, and pressure is 0.1～22Mpa.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018023159A1 (en) * | 2016-08-02 | 2018-02-08 | Lithium Australia Nl | Caustic digestion process |
| CN108645995A (en) * | 2018-04-28 | 2018-10-12 | 宜春市金地锂业有限公司 | For the ore quality detection device and detection method after lepidolite ore dressing |
| CN109321748A (en) * | 2018-11-12 | 2019-02-12 | 北京科技大学 | A method of extracting lithium, rubidium and by-product zeolite or kaliophilite from lepidolite ore |
| CN109487096A (en) * | 2017-09-09 | 2019-03-19 | 鲁婷 | High pressure steam process processing lithium ore proposes lithium technique |
| JP2020066795A (en) * | 2018-10-26 | 2020-04-30 | 住友金属鉱山株式会社 | Method for leaching lithium and method for recovering lithium |
| CN111847488A (en) * | 2020-08-03 | 2020-10-30 | 柴肖芳 | Process for extracting lithium from lepidolite |
| CN115488085A (en) * | 2022-08-11 | 2022-12-20 | 中核龙原科技有限公司 | Method for cleaning residual sodium metal |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018023159A1 (en) * | 2016-08-02 | 2018-02-08 | Lithium Australia Nl | Caustic digestion process |
| CN109890990A (en) * | 2016-08-02 | 2019-06-14 | 澳大利亚锂公司 | Caustic digestion method |
| CN109890990B (en) * | 2016-08-02 | 2022-03-04 | 澳大利亚锂公司 | Caustic digestion process |
| CN109487096A (en) * | 2017-09-09 | 2019-03-19 | 鲁婷 | High pressure steam process processing lithium ore proposes lithium technique |
| CN108645995A (en) * | 2018-04-28 | 2018-10-12 | 宜春市金地锂业有限公司 | For the ore quality detection device and detection method after lepidolite ore dressing |
| CN108645995B (en) * | 2018-04-28 | 2021-02-26 | 宜春市金地锂业有限公司 | Device and method for detecting ore quality after lepidolite mineral separation |
| JP2020066795A (en) * | 2018-10-26 | 2020-04-30 | 住友金属鉱山株式会社 | Method for leaching lithium and method for recovering lithium |
| JP7225681B2 (en) | 2018-10-26 | 2023-02-21 | 住友金属鉱山株式会社 | Lithium leaching method and lithium recovery method |
| CN109321748A (en) * | 2018-11-12 | 2019-02-12 | 北京科技大学 | A method of extracting lithium, rubidium and by-product zeolite or kaliophilite from lepidolite ore |
| CN111847488A (en) * | 2020-08-03 | 2020-10-30 | 柴肖芳 | Process for extracting lithium from lepidolite |
| CN115488085A (en) * | 2022-08-11 | 2022-12-20 | 中核龙原科技有限公司 | Method for cleaning residual sodium metal |
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