CN1502557A - Method for one-step extracting lithium carbonate from high magnesium lithium ratio salt lake bittern - Google Patents
Method for one-step extracting lithium carbonate from high magnesium lithium ratio salt lake bittern Download PDFInfo
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- CN1502557A CN1502557A CNA021397716A CN02139771A CN1502557A CN 1502557 A CN1502557 A CN 1502557A CN A021397716 A CNA021397716 A CN A021397716A CN 02139771 A CN02139771 A CN 02139771A CN 1502557 A CN1502557 A CN 1502557A
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- salt lake
- lithium
- carbonate
- ratio salt
- quilonum retard
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The method for extracting lithium carbide from bittern of salt lake with high magnesium-lithium ratio by one-step process includes the following steps: controlling said salt lake bittern in the range of 40-100 deg.C and making it obtain supersaturated concentration, under the condition of thermal retardation pumping it into oscillaitng separation tower with stirrer immediately, adding stoichiometric sodium carbonate and at the same time starting stirrer and oscillator to make oscillation for 5-10 min., settling until the lithium magnesium carbonate have pronounced interface, synchronously separating out magnesium carbonate and lithium carbonate, dehydrating lithium carbonate suspension in centrifugal machine and refining the lithium carbonate crude so as to obtain the invented product.
Description
Technical field:
The present invention relates to a kind of from the high Mg/Li ratio salt lake brine one step extract the method for Quilonum Retard.
Background technology:
Chinese patent publication number 1335263 discloses a kind of method of extracting Quilonum Retard from high magnesium lithium salts lake bittern water, is to remove part Mg by the salt pan evaporation again after at first bittern evaporation being separated out potassium magnesium mixed salt
+ 2In bittern, add precipitation agent again, under certain temperature, pressure and pH value, make boron magnesium generation coprecipitation reaction and separate with lithium, reaction is finished after-filtration and is separated, add saturated NaOH in the mother liquor after the co-precipitation of boron magnesium separates then and carry out the impurity elimination of degree of depth de-magging, in the mother liquor of gained, add its consumption at last again and produce Quilonum Retard above stoichiometric yellow soda ash precipitation; CN87103431A will separate by carrying out extraction process again in the laboratory after the evaporation of salt pan.Above method all will be evaporated by the salt pan, generally will evaporate just can transport factory back in 1 year, and very time-consuming, traffic capacity is big, separating step multistep and complexity, production cost height.
Summary of the invention:
The object of the present invention is to provide and a kind ofly can isolate Quilonum Retard, significantly reduced traffic capacity in a direct step of Yanhu District, simple in the technology without fresh water, step, fast, low a kind of of production cost extract the method for Quilonum Retard one step from the high Mg/Li ratio salt lake brine.
Method of the present invention may further comprise the steps:
(1) high Mg/Li ratio salt lake brine controlled temperature is made at 40-100 ℃ reaches supersaturation concentration;
(2) under the state of insulation, be pumped into immediately in the vibration knockout tower that has agitator;
(3) in 40-100 ℃ of scope, add stoichiometric yellow soda ash;
(4) start stirrer and vibrator vibration 5-10 minute;
(5) leave standstill to the lithium magnesium carbonate tangible separation surface is arranged till;
(6) isolate magnesiumcarbonate and Quilonum Retard;
(7) in whizzer, the dehydration of Quilonum Retard suspended substance is the technical pure product;
More preferably condition is high Mg/Li ratio salt lake brine controlled temperature to be made at 70-90 ℃ reached
Saturation concentration; In 70-90 ℃ of scope, add stoichiometric yellow soda ash.
Above crude product can be refined into elaboration through known process for purification again
Vibration separates and can separate for sonic oscillation, also can be magnetic oscillation separation or nuclear-magnetism vibration separation.Can isolate Quilonum Retard, significantly reduced traffic capacity in a direct step of Yanhu District with method of the present invention, simple in the technology without fresh water, step, fast, production cost is low.
Embodiment:
Embodiment 1:
Contain lithium ion 0.28-0.3 mole in the salt lake brine mother liquor, 4.8 moles of magnesium ions, 0.1 mole of sodium ion, 0.07 mole of potassium ion, 9.2 moles of chlorions, proportion are 1.3.
Get 1 meter of this high Mg/Li ratio salt lake brine at Yanhu District
3, controlled temperature makes mother liquor reach supersaturation concentration at 50 ℃; Under the state of insulation, be pumped into immediately in the magnetic oscillation knockout tower of belt stirrer; Add stoichiometric yellow soda ash, start stirrer and magnetic oscillator vibration 5 minutes; Leave standstill to the lithium magnesium carbonate tangible separation surface is arranged till; Automatically isolate heavy magnesiumcarbonate then; Take out upper strata Quilonum Retard suspended substance; In whizzer the dehydration of Quilonum Retard suspended substance is the technical pure crude product, it is refining by known process for purification to transport crude product Quilonum Retard dry product back laboratory.Present embodiment is to add an amount of water to make into the crude product aqeous suspension, feeds CO
2Make Quilonum Retard convert lithium bicarbonate to and be dissolved in the water, remove by filter MgCO
3, heat then to making lithium bicarbonate convert the Quilonum Retard precipitation to more than 80 ℃, make 9.1 kilograms of finished products.
Lithium carbonate containing 92% in this product, magnesiumcarbonate 4.5%, and surplus is other impurity.
Embodiment 2:
Get 1 meter of above-mentioned high Mg/Li ratio salt lake brine
3Controlled temperature makes mother liquor reach supersaturation concentration at 70 ℃; Under the state of insulation, be pumped into immediately in the sonic oscillation knockout tower of belt stirrer; Add stoichiometric yellow soda ash, start stirrer and ultrasonator vibration 10 minutes; Leave standstill about 10 minutes to the lithium magnesium carbonate tangible separation surface is arranged till; Automatically isolate heavy magnesiumcarbonate then; Take out upper strata Quilonum Retard suspended substance; In whizzer, the dehydration of Quilonum Retard suspended substance is the technical pure crude product.
Embodiment 3:
Get 1 meter of above-mentioned high Mg/Li ratio salt lake brine
3Controlled temperature makes mother liquor reach supersaturation concentration at 90 ℃; Under the state of insulation, be pumped into immediately in the magnetic oscillation knockout tower of belt stirrer; Add stoichiometric yellow soda ash, start stirrer and magnetic oscillator vibration 8 minutes; Leave standstill about 10 minutes to the lithium magnesium carbonate tangible separation surface is arranged till; Under above-mentioned effect, form tangible lithium magnesium separation surface, isolate heavy magnesiumcarbonate then automatically; Take out upper strata Quilonum Retard suspended substance; In whizzer,, be the technical pure crude product with the dehydration of Quilonum Retard suspended substance.
Claims (4)
1. one step was extracted the method for Quilonum Retard from the high Mg/Li ratio salt lake brine, it is characterized in that may further comprise the steps:
(1) high Mg/Li ratio salt lake brine controlled temperature is made at 40-100 ℃ reaches supersaturation concentration;
(2) under the state of insulation, be pumped into immediately in the vibration knockout tower of belt stirrer;
(3) in 40-100 ℃ of scope, add stoichiometric yellow soda ash;
(4) starting the vibration of stirrer and vibrator separates;
(5) leave standstill to the lithium magnesium carbonate tangible separation surface is arranged till;
(6) separated in synchronization goes out magnesiumcarbonate and Quilonum Retard;
(7) in whizzer, the dehydration of Quilonum Retard suspended substance is the technical pure product.
2. method according to claim 1 is characterized in that: high Mg/Li ratio salt lake brine controlled temperature is made at 70-90 ℃ reach supersaturation concentration.
3. method according to claim 1 is characterized in that: add stoichiometric yellow soda ash in 70-90 ℃ of scope.
4. method according to claim 1 is characterized in that: high Mg/Li ratio salt lake brine controlled temperature is made at 70-90 ℃ reach supersaturation concentration; In 70-90 ℃ of scope, add stoichiometric yellow soda ash.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02139771 CN1215977C (en) | 2002-11-22 | 2002-11-22 | Method for one-step extracting lithium carbonate from high magnesium lithium ratio salt lake bittern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02139771 CN1215977C (en) | 2002-11-22 | 2002-11-22 | Method for one-step extracting lithium carbonate from high magnesium lithium ratio salt lake bittern |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1502557A true CN1502557A (en) | 2004-06-09 |
| CN1215977C CN1215977C (en) | 2005-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02139771 Expired - Fee Related CN1215977C (en) | 2002-11-22 | 2002-11-22 | Method for one-step extracting lithium carbonate from high magnesium lithium ratio salt lake bittern |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1215977C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313373C (en) * | 2005-07-17 | 2007-05-02 | 青海中信国安科技发展有限公司 | Process for producing lithium carbonate magnesium oxide and hydrogen chloride by high magnesium lithium-containing halogen water |
| CN103898341A (en) * | 2014-03-06 | 2014-07-02 | 中国科学院青海盐湖研究所 | Method for separating and extracting lithium from lithium sulfate coarse ore |
-
2002
- 2002-11-22 CN CN 02139771 patent/CN1215977C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1313373C (en) * | 2005-07-17 | 2007-05-02 | 青海中信国安科技发展有限公司 | Process for producing lithium carbonate magnesium oxide and hydrogen chloride by high magnesium lithium-containing halogen water |
| CN103898341A (en) * | 2014-03-06 | 2014-07-02 | 中国科学院青海盐湖研究所 | Method for separating and extracting lithium from lithium sulfate coarse ore |
| CN103898341B (en) * | 2014-03-06 | 2015-10-21 | 中国科学院青海盐湖研究所 | From the method for the rough separation and Extraction lithium of Lithium Sulphate |
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| Publication number | Publication date |
|---|---|
| CN1215977C (en) | 2005-08-24 |
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Granted publication date: 20050824 |