CN102815727A - Method for extracting lithium carbonate from carbonate brine - Google Patents
Method for extracting lithium carbonate from carbonate brine Download PDFInfo
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- CN102815727A CN102815727A CN2012103399654A CN201210339965A CN102815727A CN 102815727 A CN102815727 A CN 102815727A CN 2012103399654 A CN2012103399654 A CN 2012103399654A CN 201210339965 A CN201210339965 A CN 201210339965A CN 102815727 A CN102815727 A CN 102815727A
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- F24S10/00—Solar heat collectors using working fluids
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Abstract
The invention discloses a method for extracting lithium carbonate from carbonate brine. A salt gradient heat-preserving solar pond is built by clay; black ethylene-propylene-diene monomer waterproof coiled material, geomembrane or high density polyethylene spraying canvas and the like are laid at the bottom surface of the pond as the mat; a heat exchanging pipeline or an electric heating device is arranged 0.5-1m above the bottom of the pond; lithium-rich brine which is prepared by freezing and solarization is directly poured into the salt gradient heat-preserving solar pond, a layer of fresh water is laid at the surface of the brine, the brine is heated by the double action of solar irradiation and heat exchanging or electric heating and lithium carbonate is separated out concentratedly; and finally, lithium mixed salt obtained in the salt gradient heat-preserving solar pond is scrubbed with fresh water at proper temperature. The combination of the salt gradient heat-preserving solar pond, the heat exchanging or electric heating device and scrubbing by fresh water at proper temperature is applied to the extraction of lithium carbonate from carbonate brine, therefore, the production efficiency and the product quality are greatly improved, the production cycle is shortened, the production cost is lowered and lithium carbonate concentrate is obtained directly.
Description
Technical field
The present invention relates to a kind of process for extracting of inorganic salt, more precisely, relate to a kind of method of from carbonate type bittern, extracting Quilonum Retard.
Background technology
Along with the continually developing and using of high-performance lithium material, the world increases for the demand of lithium day by day.In recent years, salt lake brine is carried the alternative gradually hard rock lithium ore deposit of lithium and is carried lithium, becomes the main working method of lithium salts.The lithium resource rich of China, and mainly be distributed in the salt lake of highlands, wherein the lithium resource of Tibet salt lake brine mainly is a carbonate type, is the significant work of ten minutes for from bittern, extracting, utilizing the research of lithium.
Chinese patent 99105828.3 (lithium salt extraction process from carbonate type bittern) discloses a kind of method of from carbonate type bittern, extracting lithium salts.This method is utilized the cold natural advantage in plateau, impels saltcake to precipitate in a large number, from the salt lake, extracts the low sulfate radical bittern of high lithium and makes raw material; Adopt multistage freezing Exposure to Sunlight on-swimmer's pool-control pond-crystallizing pond-mother liquor pond, make halite, saltcake a large amount of precipitate and separate in the Exposure to Sunlight on-swimmer's pool, lithium then reaches pre-concentration in bittern; Focus on the control pond then; Make the lithium content in the bittern reach 1.5 ~ 2.8g/L, and temperature control halogen to crystallizing pond more than 5 ℃; Make enrichment higher-grade in the crystallizing pond, high lithium mixed salt that thickness is big, its lithium carbonate containing grade is more than 5%.
Chinese patent 02129355.4 (utilizing solar pond crystallization from carbonate type bittern to separate out the method for Quilonum Retard) provide a kind of with solar pond as crystallizing pond crystallization from carbonate type bittern separate out the method for Quilonum Retard.Solar pond directly surrounds with clay, is the sandwich structure of plastic film and hydromagnesite at the bottom of the pond, and pond body inwall is covered with black geomembrane or high density polyethylene(HDPE), SE etc. as liner; The heat-accumulating process of solar pond and the precipitation process of Quilonum Retard are combined together; Can get the Quilonum Retard mixed salt of grade about 60%, this method with low cost, the pond body structure is simple; Make full use of sun power, economic benefit is higher.
Chinese patent 200620172864.2 (being used for the solar pond device that bittern is carried lithium) provides a kind of solar pond device that bittern is carried lithium that is used for.The pond body comprises the agent structure layer, and the sidewall of this layer body along the pond and bottom upwards all are distributed with waterproof and dampproof layer, thermal insulation layer, anticorrosion waterproof heat-sink shell successively.Device is made up of four layers or five-layer structure, and the superiors are anticorrosion waterproof heat-sink shell, and it selects good anticorrosive of effective heat absorption capacity and special insulation construction for use; Make solar pond thermal isolation and heat storage better effects if, after absorbing solar heat-preservation in 20～40 days, temperature can reach 30～50 ℃ at the bottom of the winter-spring season pond; Temperature can reach 50～80 ℃ at the bottom of the summer and autumn ponds, separates out Quilonum Retard thereby quicken from carbonate type bittern crystallization, improves percent crystallization in massecuite; Enhance productivity, can realize operate continuously.
On the basis of aforesaid method, the present invention further explores the technique means of efficient cheap extraction higher-grade Quilonum Retard from carbonate type bittern.
Under the high and cold condition in highlands, the lithium salts in the carbonate type bittern is difficult for concentrating separates out, but is prone in the process of bittern solar evaporation, disperse to separate out, and the utmost point is unfavorable for the extraction of higher-grade Quilonum Retard like this.Research shows; The solubleness of Quilonum Retard has negative temperature effect; Be the solubleness of Quilonum Retard in water along with the rising of temperature reduces, other salts in the carbonate type bittern then great majority have positive temperature effect, and promptly its solubleness is along with the rising of temperature raises.Therefore, when the lithium content in the bittern reach or near saturation point after, temperature just becomes the controlling index that Quilonum Retard deposition is separated out, the principle that adds hot brine intensification sinker capable of using is extracted the higher-grade Quilonum Retard from carbonate type bittern.
Separate out Quilonum Retard though adopt artificial heating method or carborization to concentrate, need the mineral fuel of labor, this Tibet plateau area at energy shortage is also infeasible.Analyse lithium and rely on solar radiation to add the crystallization of hot brine formation solar pond merely;, bittern do not have evaporation basically although being heated up; But the temperature rise rate of bittern is slower, causes the production cycle longer, from solar pond, irritates halogen need reach two wheat harvesting periods to results lithium mixed salt time.And not only cost is higher in the insulation measure of taking to Chi Tisuo at present, but also can't satisfy processing requirement; Particularly the heat storage capacity of pond body is relatively poor; Make that the day and night temperature of bittern is big, under the acute irradiation of the sun, brine temperature is the highest to rise to 40 ℃ by day; But to night brine temperature then can reduce significantly; Cause salt crystallizations from low temperature bittern such as halite, borax to be separated out, and from high-temperature bittern the deposition part Quilonum Retard of having separated out again Hui Rong in bittern, had a strong impact on the grade of Quilonum Retard.In addition; Adopt the lithium mixed salt of above-mentioned patented process (99105828.3,02129355.4,200620172864.2) institute output; Because its grade is not high, also need long-distance transportation in ground just can process purification, every year all can labor like this freight charges and the energy.
Summary of the invention
The present invention is in order to solve the problem that exists in the prior art; A kind of method of from carbonate type bittern, extracting Quilonum Retard is provided; Take into full account the geography and the resources advantage in salt lake; Salt gradient is incubated exchange of solar pond, hot water thermal or electric power heating and thermophilic fresh water scouring method combines, realize from carbonate type bittern efficient cheap and contamination-freely extract the higher-grade Quilonum Retard.
Technical solution of the present invention is:
Be incubated solar pond as crystallizing pond with the salt gradient that heat exchanging pipe or electric power heating unit are installed, Quilonum Retard is separated out in crystallization from carbonate type bittern, the rich lithium bittern that working medium promptly makes through freezing Exposure to Sunlight.Described salt gradient insulation solar pond is directly built up daylighting area 1000 ~ 10000m by clay
2, the dark 3 ~ 4m in pond all adopts plastic film and lagging material to form the sandwich structure of heat insulating layer with pond body inwall at the bottom of the pond, and the pond internal surface can be laid black EPDM waterproof roll, geomembrane or high density polyethylene(HDPE) plastic-blasting canvas etc. as liner.At high 0.5-1m at the bottom of the pond heat exchanging pipe or electric power heating unit are housed at the place.Described heat exchanging pipe is selected the high corrosion resistant material of heat transfer efficiency for use; Be processed into like stainless steel, PE-RT or PP-R etc.; The high-temperature-hot-water of can flowing through in the pipe; The hot water that comprises GEOTHERMAL WATER and adopt other type of heating to obtain, heat exchanging pipe can be made into the structure of intensifying heat transfer such as U font or volution.Described electric power heating unit can be heating installations such as wire spiral, electrically heated rod, electrical heating element.
To directly pour in the pond through the rich lithium bittern that freezing Exposure to Sunlight makes; Re-lay one deck fresh water on the bittern top layer; Form certain thickness salt gradient layer between fresh water aquifer and the bittern layer; Play the effect that stops heat upwards to scatter and disappear, mechanism is following: 1, the structure of solar pond comprises one deck by the heat insulating layer that plastic film and lagging material form, and makes the better heat preservation of solar pond; 2, compare with common solar pond; The solar pond of this patent not exclusively relies on the radiation effect of the sun; And the cycling hot that mainly relies on high-temperature-hot-water in the heat exchanging pipe exchanges or the lasting supply of electric power heating unit realization heat; Therefore the solar pond of this patent receives that day and night temperature Change is less with the influence that substitutes season, so intensification and heat preservation effect are better.
Utilize the different of fresh water and bittern specific refractory power, the solar heat of absorption is stored in bittern at the bottom of the pond, form the energy storage district, thereby improve and keep lower floor's brine temperature.Simultaneously; Utilize the electric power heating unit that bittern in the pond is carried out rapid heating and heat up, or introduce high-temperature-hot-water by the inlet of heat exchanging pipe, hot water in the process of whole pipe of flowing through constantly with pipe outside bittern carry out heat exchange; Make the temperature of the outer bittern of pipe can improve self then reduction significantly of temperature in a short time rapidly; Cooled hot water is flowed out by the outlet of heat exchanging pipe again, if GEOTHERMAL WATER then can be recharged it underground.Under the dual function of solar radiation and hot water thermal exchange or electric power heating; Carbonate type bittern in the salt gradient insulation solar pond of heat exchanging pipe or electric power heating unit is installed not only temperature rise rate obviously accelerate; The intensification amplitude also increases; Production cycle shortens greatly, promptly only needs about 10 days time from salt gradient insulation sun basin irrigation halogen to results lithium mixed salt, and in the lithium mixed salt that obtains the grade of Quilonum Retard higher (temperature controlling is the key factor that Quilonum Retard is separated out grade.Find through experiment, the temperature of bittern layer more than 50 ℃ the time Quilonum Retard to separate out grade higher.), production efficiency and product yield also all are able to significantly improve.
Be incubated shallow pond as the tank fresh water that heats up with open Exposure to Sunlight.The shallow pond of described insulation is directly built up by clay, area 1000 ~ 10000m
2, the dark 1 ~ 2m in pond all adopts plastic film and lagging material to form the sandwich structure of heat insulating layer with pond body inwall at the bottom of the pond.Pour in the pond and keep a certain amount of fresh water, fresh water under the irradiation of the sun, to absorb solar heat and heat up, the thermophilic fresh water (water temperature is more than 20 ℃) after heating up is cleaned above-mentioned by the higher-grade lithium mixed salt of gathering in the crops in the salt gradient insulation solar pond; In order to remove other salt impurity; Thereby (because the solubleness of Quilonum Retard has negative temperature effect, the solubleness of other salts then great majority has positive temperature effect, therefore further to improve the grade of Quilonum Retard in the lithium mixed salt; Fresh water with temperature is high is more cleaned the lithium mixed salt; Quilonum Retard is difficult for dissolved, and other salts then are easy to cleaned, so the Quilonum Retard grade is improved.), finally obtain the Quilonum Retard concentrate.
Advantage of the present invention is:
Make full use of the highlands abundant solar energy resources; In conjunction with utilizing some carbonate type salt lake neighbouring new forms of energy or electric power energies such as underground heat; Be incubated the crystallizing pond of solar pond with the salt gradient that heat exchanging pipe or electric power heating unit are installed as Quilonum Retard; The bittern that under the dual function of exchange of solar radiation and hot water thermal or electric power heating, heats up makes the Quilonum Retard that in evaporative process, is easy to disperse to separate out concentrate deposition in a large number, enhances productivity and product yield; Shorten the production cycle, realize the annual uninterrupted Quilonum Retard of producing.
Salt gradient insulation solar pond adopts plastic film and lagging material to form the sandwich structure of heat insulating layer, and the pond internal surface is covered with black EPDM waterproof roll, geomembrane or high density polyethylene(HDPE) plastic-blasting canvas etc. as liner.And heat exchanging pipe or electric power heating unit are installed at high 0.5-1m place at the bottom of the pond; Electric power heating units such as heat exchanging pipe internal recycle mobile high-temperature-hot-water or resistive heater, electrically heated rod, electrical heating element are sustainable to the bittern heat supplied; Therefore receive that day and night temperature Change is less with the influence of replacement in season, and the temperature rise rate of bittern and intensification amplitude are greatly improved; Like what feed in the heat exchanging pipe is GEOTHERMAL WATER, and so cooled GEOTHERMAL WATER is reusable edible or recharged undergroundly also, does not have any environmental pollution and resources loss, and has reduced production cost and the consumption that has reduced mineral fuel significantly;
Utilize sun power nature intensification fresh water, be incubated shallow pond as tank with open Exposure to Sunlight, this is incubated the sandwich structure that shallow pond adopts plastic film and lagging material to form equally, has practiced thrift laid down cost; Thermophilic fresh water after heating up is cleaned the lithium mixed salt, and scrub effect is good, and quality product is high, can obtain the Quilonum Retard concentrate.
Present method makes full use of highlands abundant solar energy resources, geothermal energy resources or electric power energy, salt lake resources; Salt gradient is incubated solar pond, hot water thermal exchange or methods such as electric power heating unit and the scouring of thermophilic fresh water to combine; Be applied to carbonate type bittern and extract Quilonum Retard, improved production efficiency and quality product greatly, shortened the production cycle; Reduced production cost, can directly obtain the Quilonum Retard concentrate in the locality.
Description of drawings
Fig. 1 shows the process flow diagram that the present invention extracts the Quilonum Retard method.
Embodiment
Further specify below in conjunction with the accompanying drawing specific embodiments of the invention.
With reference to Fig. 1, extraction Quilonum Retard method disclosed by the invention is incubated solar pond as crystallizing pond with the salt gradient that heat exchanging pipe or electric power heating unit are installed, and Quilonum Retard is separated out in crystallization from carbonate type bittern.Said salt gradient insulation solar pond is directly built up daylighting area 1000 ~ 10000m by clay
2Dark 3 ~ the 4m in pond; All adopt plastic film and lagging material to form the sandwich structure of heat insulating layer with pond body inwall at the bottom of the pond, the pond internal surface can be laid black EPDM waterproof roll, geomembrane or high density polyethylene(HDPE) plastic-blasting canvas etc. as liner, to prevent the bittern infiltration; At high 0.5-1m at the bottom of the pond heat exchanging pipe or electric power heating unit are housed at the place.Described heat exchanging pipe is selected the high corrosion resistant material of heat transfer efficiency for use; Be processed into like stainless steel, PE-RT or PP-R etc.; The high-temperature-hot-water of can flowing through in the pipe; The hot water that comprises GEOTHERMAL WATER and adopt other type of heating to obtain, heat exchanging pipe can be made into the structure of intensifying heat transfer such as U font or volution.Described electric power heating unit can be heating installations such as resistive heater, electrically heated rod, electrical heating element.
Contain the lithium salts lake bittern water as raw material with carbonate type, after freezing Exposure to Sunlight, obtain rich lithium bittern (Li
+Concentration 1.5 ~ 2.8g/l) directly pours in the salt gradient insulation solar pond to the about 1.5 ~ 2.5m of the degree of depth; Re-lay the about 0.3 ~ 0.5m of one deck fresh water (the 0.3 ~ 0.5m here is for the comparatively suitable fresh water aquifer degree of depth of bittern layer depth 1.5 ~ 2.5m on the bittern top layer.If the fresh water aquifer degree of depth is greater than 0.5m; Not only can partly dilute lower floor's bittern, lithium concentration is reduced, and the total thickness of formed fresh water aquifer and transition layer also can increase; Thereby hinder of the absorption of lower floor's bittern layer, cause bittern intensification effect not remarkable for solar heat.), the about 1.8 ~ 3.0m of total depth of bittern layer and fresh water aquifer in the salt gradient insulation this moment solar pond.Form certain thickness salt gradient layer between fresh water aquifer and the bittern layer; Play the effect that stops heat upwards to scatter and disappear; Mechanism is following: 1, the structure of solar pond comprises one deck by the heat insulating layer that plastic film and lagging material form, and makes the better heat preservation of solar pond; 2, compare with common solar pond; The solar pond of this patent not exclusively relies on the radiation effect of the sun; And the cycling hot that mainly relies on high-temperature-hot-water exchanges or the lasting supply of electric power heating unit realization heat; Therefore the solar pond of this patent receives that day and night temperature Change is less with the influence that substitutes season, so intensification and heat preservation effect are better.
Utilize the different of fresh water and bittern specific refractory power, the solar heat of absorption is stored in bittern at the bottom of the pond, form the energy storage district, thereby improve and keep lower floor's brine temperature.Simultaneously; Utilize the electric power heating unit that bittern in the pond is carried out rapid heating and heat up, or introduce high-temperature-hot-water by the inlet of heat exchanging pipe, hot water in the process of whole pipe of flowing through constantly with pipe outside bittern carry out heat exchange; Make the temperature of the outer bittern of pipe can improve self then reduction significantly of temperature in a short time rapidly; Cooled hot water is flowed out by the outlet of heat exchanging pipe again, if GEOTHERMAL WATER then can be recharged it underground.Under the dual function of solar radiation and hot water thermal exchange or electric power heating; Carbonate type bittern in the salt gradient insulation solar pond of heat exchanging pipe or electric power heating unit is installed not only temperature rise rate obviously accelerate; The intensification amplitude also increases, and the production cycle shortens greatly.By the electric power heating unit bittern in the pond is heated; Or (water temperature is more than 60 ℃, and according to the rule that the rising of the solubility with temperature of Quilonum Retard reduces, the hot water temperature is high more to feed high-temperature-hot-water by the inlet of heat exchanging pipe; The amount of separating out of Quilonum Retard is then many more, and the yield of product is high more.); Hot water in the process of pipeline of flowing through constantly with pipe outside low temperature bittern carry out heat exchange; Low temperature bittern receives under the dual function of solar pond for the accumulation of heat of sun power and hot water thermal exchange or electric power heating at the same time, in a short time (about about 10 days time) can heat up rapidly, and top temperature can reach more than 60 ℃; Quilonum Retard is also concentrated in a large number in the pond and is separated out simultaneously, and the grade of Quilonum Retard is up to 75 ~ 85% in the lithium mixed salt of results.
Simultaneously, be incubated shallow pond as the tank fresh water that heats up with open Exposure to Sunlight.The shallow pond of described insulation is directly built up by clay, area 1000 ~ 10000m
2, the dark 1 ~ 2m in pond all adopts plastic film and lagging material to form the sandwich structure of heat insulating layer with pond body inwall at the bottom of the pond.Pour in the pond and keep a certain amount of fresh water, fresh water under the irradiation of the sun, to absorb solar heat and heat up, the thermophilic fresh water (water temperature is more than 20 ℃) after heating up is cleaned above-mentioned by the higher-grade lithium mixed salt of gathering in the crops in the salt gradient insulation solar pond; In order to remove other salt impurity; Thereby (because the solubleness of Quilonum Retard has negative temperature effect, the solubleness of other salts then great majority has positive temperature effect, therefore further to improve the grade of Quilonum Retard in the lithium mixed salt; Fresh water with temperature is high is more cleaned the lithium mixed salt; Quilonum Retard is difficult for dissolved, and other salts then are easy to cleaned, so the Quilonum Retard grade is improved.), finally can obtain grade at the Quilonum Retard concentrate more than 90%.
Method of the present invention; Make full use of the highlands abundant solar energy resources; In conjunction with utilizing some carbonate type salt lake neighbouring new forms of energy or electric power energies such as underground heat, be incubated the crystallizing pond of solar pond with the salt gradient that heat exchanging pipe or electric power heating unit are installed as Quilonum Retard, bittern heats up under the dual function of solar radiation and hot water thermal exchange or electric power heating; Make the Quilonum Retard that in evaporative process, is easy to disperse to separate out concentrate deposition in a large number; Enhance productivity and product yield, shorten the production cycle, realize the annual uninterrupted Quilonum Retard of producing.
Salt gradient insulation solar pond adopts plastic film and lagging material to form the sandwich structure of heat insulating layer, and the pond internal surface is covered with black EPDM waterproof roll, geomembrane or high density polyethylene(HDPE) plastic-blasting canvas etc. as liner.And heat exchanging pipe or electric power heating unit are installed at high 0.5-1m place at the bottom of the pond; Pipe internal recycle mobile high-temperature-hot-water or electric power heating unit are sustainable to the bittern heat supplied; Therefore receive that day and night temperature Change is less with the influence of replacement in season, and the temperature rise rate of bittern and intensification amplitude are greatly improved; Like what feed in the heat exchanging pipe is GEOTHERMAL WATER, and so cooled GEOTHERMAL WATER is reusable edible or recharged undergroundly also, does not have any environmental pollution and resources loss, and has reduced production cost and the consumption that has reduced mineral fuel significantly.
Utilize sun power nature intensification fresh water, be incubated shallow pond as tank with open Exposure to Sunlight, this is incubated the sandwich structure that shallow pond adopts plastic film and lagging material to form equally, has practiced thrift laid down cost; Thermophilic fresh water after heating up is cleaned the lithium mixed salt, and scrub effect is good, and quality product is high, can obtain the Quilonum Retard concentrate.
Present method makes full use of highlands abundant solar energy resources, geothermal energy resources or electric power energy, salt lake resources; Salt gradient is incubated solar pond, hot water thermal exchange or methods such as electric power heating unit and the scouring of thermophilic fresh water to combine; Be applied to carbonate type bittern and extract Quilonum Retard, improved production efficiency and quality product greatly, shortened the production cycle; Reduced production cost, can directly obtain the Quilonum Retard concentrate in the locality.
Claims (10)
1. from carbonate type bittern, extract the method for Quilonum Retard; It is characterized in that: with salt gradient insulation solar pond as crystallizing pond crystallization from carbonate type bittern separate out Quilonum Retard; The rich lithium bittern of working medium for making of salt gradient insulation solar pond through freezing Exposure to Sunlight; Described salt gradient insulation solar pond builds up with clay, and its pond basal surface is equipped with liner, is equipped with heat exchanging pipe or electric power heating unit at high 0.5-1m place at the bottom of the pond; To directly pour in the solar pond through the rich lithium bittern that freezing Exposure to Sunlight makes; Re-lay one deck fresh water on the bittern top layer, form the salt gradient layer between fresh water aquifer and the bittern layer, bittern heats up under the dual function of solar radiation and heat exchange or electric power heating; Concentrate and separate out Quilonum Retard, form the lithium mixed salt; Clean the lithium mixed salt of gathering in the crops in the above-mentioned salt gradient insulation solar pond with thermophilic fresh water at last, finally obtain the Quilonum Retard concentrate.
2. method according to claim 1 is characterized in that: the daylighting area of said solar pond is 1000-10000m
2, the dark 3-4m in pond.
3. method according to claim 2 is characterized in that: the degree of depth of rich lithium bittern is 1.5-2.5m in the said solar pond, and fresh water aquifer is 0.3-0.5m, and the total depth of bittern layer and fresh water aquifer is 1.8-3m in the solar pond.
4. method according to claim 1 is characterized in that: at the bottom of the pond of said solar pond, pond body inwall is the sandwich structure that plastic film and lagging material form the heat insulating layer.
5. method according to claim 1 is characterized in that: be connected with hot water in the said heat exchanging pipe, the temperature of said heat exchanging pipe ingress hot water is more than 60 ℃.
6. method according to claim 5 is characterized in that: said hot water is GEOTHERMAL WATER.
7. method according to claim 1; It is characterized in that: said thermophilic fresh water utilizes solar heating fresh water; Being provided with an Exposure to Sunlight and being incubated shallow pond as tank, is plastic film and the sandwich structure of lagging material formation heat insulating layer with pond body inwall at the bottom of the pond in the shallow pond of said insulation.
8. method according to claim 1 is characterized in that: said liner is black EPDM waterproof roll, geomembrane or high density polyethylene(HDPE) plastic-blasting canvas.
9. method according to claim 1 is characterized in that: said heat exchanging pipe is U font or volution setting above at the bottom of the pond.
10. method according to claim 9 is characterized in that: said heat exchanging pipe is stainless steel, PE-RT or PP-R material.
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| CN111620357A (en) * | 2020-03-18 | 2020-09-04 | 兰州天道提锂技术开发有限公司 | Floating type solar salt extraction lithium concentrate by matching photoelectric heating and continuous countercurrent heat exchange |
| CN111661857A (en) * | 2020-03-18 | 2020-09-15 | 兰州天道提锂技术开发有限公司 | Floating type salt sunning, photoelectric heating and continuous countercurrent floating heat exchange extraction of lithium concentrate |
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| CN103387244B (en) * | 2013-07-29 | 2015-02-18 | 中国科学院青海盐湖研究所 | Method for enriching lithium in carbonate type salt lake brine |
| CN106185991B (en) * | 2016-07-13 | 2018-05-18 | 山西大学 | The apparatus and method of high purity potassium chloride are extracted from bittern using solar thermal energy |
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| CN201024199Y (en) * | 2006-12-30 | 2008-02-20 | 中国恩菲工程技术有限公司 | Solar pool device for extracting lithium from brine |
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2012
- 2012-02-13 CN CN2012100312644A patent/CN102583454A/en active Pending
- 2012-09-13 CN CN2012103399654A patent/CN102815727A/en active Pending
Patent Citations (3)
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| CN1370740A (en) * | 2002-03-01 | 2002-09-25 | 邓月金 | Lithium carbonate extracting process from carbonate type bittern |
| CN1398786A (en) * | 2002-09-04 | 2003-02-26 | 中国地质科学院盐湖与热水资源研究发展中心 | Lithium carbonate crystal separating process from carbonate-type bittern by means of solar battery |
| CN201024199Y (en) * | 2006-12-30 | 2008-02-20 | 中国恩菲工程技术有限公司 | Solar pool device for extracting lithium from brine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111620357A (en) * | 2020-03-18 | 2020-09-04 | 兰州天道提锂技术开发有限公司 | Floating type solar salt extraction lithium concentrate by matching photoelectric heating and continuous countercurrent heat exchange |
| CN111661857A (en) * | 2020-03-18 | 2020-09-15 | 兰州天道提锂技术开发有限公司 | Floating type salt sunning, photoelectric heating and continuous countercurrent floating heat exchange extraction of lithium concentrate |
| CN111470521A (en) * | 2020-05-25 | 2020-07-31 | 中国地质科学院矿产资源研究所 | Method for extracting lithium from solar cell |
| CN111533147A (en) * | 2020-05-25 | 2020-08-14 | 中国地质科学院矿产资源研究所 | Method for improving crystallization efficiency of lithium carbonate in solar cell |
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