CN106756106A - A kind of preparation method of zinc-base lithium ion extraction material - Google Patents
A kind of preparation method of zinc-base lithium ion extraction material Download PDFInfo
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- CN106756106A CN106756106A CN201710005190.XA CN201710005190A CN106756106A CN 106756106 A CN106756106 A CN 106756106A CN 201710005190 A CN201710005190 A CN 201710005190A CN 106756106 A CN106756106 A CN 106756106A
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- 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
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G9/00—Compounds of zinc
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- 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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/42—Treatment or purification of solutions, e.g. obtained by leaching by ion-exchange extraction
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Abstract
The invention provides a kind of preparation method of lithium ion exchanged type zinc-base lithium ion extraction material, it is comprised the following steps：After analysis pure cerium hydroxide lithium, zinc hydroxide and ammonium dihydrogen phosphate are mixed in proportion, it is fully ground to form abrasive material under normal temperature；Obtained abrasive material is transferred in high temperature furnace and is sintered, the solid obtained after cooling is zinc-based compounds；Obtained zinc-based compounds are ground into graininess, are placed in aqueous solution of nitric acid, shaken at a constant temperature, particulate matter is formed after isolating supernatant；By obtained particulate matter filtration drying, zinc-base lithium ion extraction material is obtained.The characteristics of there is simple high stability, synthesis and good selectivity by zinc-base lithium ion extraction material obtained in the method.
Description
Technical field
The present invention relates to the preparation method of zinc-base lithium ion extraction material.
Background technology
Inorganic ion exchanger has high temperature resistant, radioresistance, synthesis simply and good selective, and it is useless in core
Thing treatment, the enrichment of metal ion and the good characteristic for separating, shown in the application of the aspect such as chromatography, about it
Basic research and application study are strengthened again.
With the growth of lithium consumption figure, non-renewable lithium ore resources are depleted at last, therefore various countries attach great importance to naturally
The research of the valuable element extracting method such as lithium in salt water resources.The technology that exploitation carries lithium from natural salt water has important strategy
Meaning.This method synthesizes a series of zinc-base exchange materials using the method for high temperature solid state reaction, during it is replaced in the past with zinc
Magnesium reduces the dissolution rate of ion-exchanger, improves stability.The results show, exchange of the ion sieve to lithium ion is held
Amount is big, and selectivity is good, and it carries lithium at low concentrations has preferable effect, and application prospect is had an optimistic view of.
The content of the invention
It is an object of the invention to provide a kind of preparation method of zinc-base lithium ion extraction material, by zinc system obtained in the method
The characteristics of lithium ion extraction material has simple high stability, synthesis and good selectivity.
For achieving the above object, the preparation method of zinc-base lithium ion extraction material provided by the present invention includes following
Step：
(1) will analysis pure cerium hydroxide lithium, zinc hydroxide and ammonium dihydrogen phosphate in molar ratio (0.6~1.4)/(0.8~
1.2) after ratio mixing/1, it is fully ground to form abrasive material under normal temperature；
(2) obtained abrasive material in step (1) is transferred in high temperature furnace, is warming up to 700~800 DEG C of sintering, after cooling
The solid for arriving is the zinc-based compounds of lithium；
(3) obtained zinc-based compounds in step (2) are ground into graininess, it is 0.5~1.21mol/L's to be placed in concentration
In aqueous solution of nitric acid, shaken under 25 DEG C of constant temperature, the lithium ion in compound separates out be transferred in supernatant completely, isolates
Particulate matter is formed after supernatant；
(4) obtained particulate matter filtration drying in step (3) is obtained into lithium ion extraction material.
In the step (1), add dispersant and have in the mixture of lithium hydroxide, zinc hydroxide and ammonium dihydrogen phosphate
Machine solvent is simultaneously mixed into slurry and is ground, and dispersant is stearic acid, accounts for the 0.18%~0.22% of said mixture gross mass,
Organic solvent is ethanol, accounts for the 9%~11% of said mixture gross mass.
In the step (3), the zinc-based compounds of granular lithium intermittent oscillation 2d, phase in 25 DEG C of water bath with thermostatic control
Between, supernatant is separated off while the aqueous solution of nitric acid for more renewing, so repeatedly at least 2 times.
Drying temperature in step (4) is 80~140 DEG C.
In above-mentioned steps (3), formed after separating out lithium ion in the hydrogen ion filling zinc-based compounds in aqueous solution of nitric acid
Hole, repeatedly gap vibration can ensure hydrionic being sufficient filling with.
The method of zinc-base lithium ion extraction material provided by the present invention, is a kind of brand-new zinc-base lithium ion extraction material
Preparation method, prepares the Zr-based materials of the lithium with rock-steady structure first, analysis pure cerium hydroxide lithium, hydrogen that will be after above-mentioned grinding
Zinc oxide and the sintered technique of ammonium dihydrogen phosphate are allowed to form above-mentioned Zr-based materials, and above-mentioned Zr-based materials use lithium ion therein
Ore Leaching (material skeleton keeps being basically unchanged).First it is the structural bone with stabilization by the lithium ion material being processed as
Frame, it is ensured that its stability, secondly because have passed through ion exchange process, moves lithium ion and should be more smooth and be easy to wash-out,
Lithium ion exchanged procedure structure is not easily susceptible to destruction, considerably increases the exchange times of exchanger.
Brief description of the drawings
Fig. 1 is the X-ray diffractogram of the zinc-based compounds of lithium.
Specific embodiment
The preparation method of zinc-base lithium ion extraction material of the present invention, these embodiments are further illustrated by the following examples
The present invention is merely to illustrate, and to the present invention without limitation.
Embodiment 1
Pure LiOH, Zn (OH) will be analyzed2、NH4H2PO4Mix after 0.6/1.2/1 is weighed in molar ratio, add stearic acid to make
It is that dispersant and ethanol are mixed into slurry as organic solvent and said mixture, stearic acid accounts for said mixture gross mass
0.18%, ethanol accounts for the 9% of said mixture gross mass, is put into planetary ball mill and is fully ground 8 hours, is formed after grinding and ground
Be transferred to abrasive material in high temperature furnace in 1000-2000 mesh by mill thing, the particle of abrasive material, is warming up to 700 DEG C of sintering, after cooling
The solid for arriving is the zinc-based compounds of lithium, and the granular size and sintering temperature of above-mentioned abrasive material make the zinc-based compounds of generation
Material skeleton there is rock-steady structure, weigh zinc-based compounds 5g, passed through pulverizer and be ground into graininess, add
The aqueous solution of nitric acid 500ml of 0.5mol/L, intermittent oscillation 2d, period, are separated off supernatant in 25 DEG C of water bath with thermostatic control
The aqueous solution of nitric acid that more renews simultaneously, so repeatedly 2 times, particulate matter is formed after being finally recovered out supernatant, is washed out, and is dried
It is dry, you can to obtain zinc-base lithium ion extraction material, the drying temperature of above-mentioned precipitation particulate matter is 80 DEG C.Experimental result shows, this
Zinc-base lithium ion extraction material reaches 2.4mgg to the saturation exchange capacity of Li ions-1。
Embodiment 2
Pure LiOH, Zn (OH) will be analyzed2、NH4H2PO4Mix after 1.2/0.9/1 is weighed in molar ratio, add stearic acid to make
It is that dispersant and ethanol are mixed into slurry as organic solvent and said mixture, stearic acid accounts for said mixture gross mass
0.18%, ethanol accounts for the 9% of said mixture gross mass, is put into planetary ball mill and is fully ground 8 hours, is formed after grinding and ground
Be transferred to abrasive material in high temperature furnace in 1000-2000 mesh by mill thing, the particle of abrasive material, is warming up to 725 DEG C of sintering, after cooling
The solid for arriving is the zinc-based compounds of lithium, and the granular size and sintering temperature of above-mentioned abrasive material make the zinc-based compounds of generation
Material skeleton there is rock-steady structure, weigh zinc-based compounds 5g, passed through pulverizer and be ground into graininess, add
The aqueous solution of nitric acid 500ml of 0.5mol/L, intermittent oscillation 2d, period, are separated off supernatant in 25 DEG C of water bath with thermostatic control
The aqueous solution of nitric acid that more renews simultaneously, so repeatedly 2 times, particulate matter is formed after being finally recovered out supernatant, is washed out, and is dried
It is dry, you can to obtain zinc-base lithium ion extraction material, the drying temperature of above-mentioned precipitation particulate matter is 80 DEG C.Experimental result shows, this
Zinc-base lithium ion extraction material reaches 5.1mgg to the saturation exchange capacity of Li ions-1。
Embodiment 3
Pure LiOH, Zn (OH) will be analyzed2、NH4H2PO4Mix after 1.4/0.8/1 is weighed in molar ratio, add stearic acid to make
It is that dispersant and ethanol are mixed into slurry as organic solvent and said mixture, stearic acid accounts for said mixture gross mass
0.18%, ethanol accounts for the 9% of said mixture gross mass, is put into planetary ball mill and is fully ground 8 hours, is formed after grinding and ground
Be transferred to abrasive material in high temperature furnace in 1000-2000 mesh by mill thing, the particle of abrasive material, is warming up to 750 DEG C of sintering, after cooling
The solid for arriving is the zinc-based compounds (as shown in Figure 1) of lithium, and the granular size and sintering temperature of above-mentioned abrasive material make generation
The material skeleton of zinc-based compounds has rock-steady structure, weighs zinc-based compounds 5g, is passed through pulverizer and is ground into graininess,
The aqueous solution of nitric acid 500ml of 0.5mol/L is added, intermittent oscillation 2d, period, are separated off supernatant in 25 DEG C of water bath with thermostatic control
The aqueous solution of nitric acid more renewed while night, so repeatedly 2 times, particulate matter is formed after being finally recovered out supernatant, is washed out,
Drying, you can obtain zinc-base lithium ion extraction material, the drying temperature of above-mentioned precipitation particulate matter is 80 DEG C.Experimental result shows,
This zinc-base lithium ion extraction material reaches 5.8mgg to the saturation exchange capacity of Li ions-1。
Embodiment 4
Pure LiOH, Zn (OH) will be analyzed2、NH4H2PO4Mix after 0.8/1.1/1 is weighed in molar ratio, add stearic acid to make
It is that dispersant and ethanol are mixed into slurry as organic solvent and said mixture, stearic acid accounts for said mixture gross mass
0.18%, ethanol accounts for the 9% of said mixture gross mass, is put into planetary ball mill and is fully ground 8 hours, is formed after grinding and ground
Be transferred to abrasive material in high temperature furnace in 1000-2000 mesh by mill thing, the particle of abrasive material, is warming up to 775 DEG C of sintering, after cooling
The solid for arriving is the zinc-based compounds of lithium, and the granular size and sintering temperature of above-mentioned abrasive material make the zinc-based compounds of generation
Material skeleton there is rock-steady structure, weigh zinc-based compounds 5g, passed through pulverizer and be ground into graininess, add
The aqueous solution of nitric acid 500ml of 0.5mol/L, intermittent oscillation 2d, period, are separated off supernatant in 25 DEG C of water bath with thermostatic control
The aqueous solution of nitric acid that more renews simultaneously, so repeatedly 2 times, particulate matter is formed after being finally recovered out supernatant, is washed out, and is dried
It is dry, you can to obtain zinc-base lithium ion extraction material, the drying temperature of above-mentioned precipitation particulate matter is 80 DEG C.Experimental result shows, this
Zinc-base lithium ion extraction material reaches 2.7mgg to the saturation exchange capacity of Li ions-1。
Embodiment 5
Pure LiOH, Zn (OH) will be analyzed2、NH4H2PO4In molar ratio 1/1/1 weigh after mix, add stearic acid as point
Powder and ethanol are mixed into slurry as organic solvent and said mixture, and stearic acid accounts for said mixture gross mass
0.18%, ethanol accounts for the 9% of said mixture gross mass, is put into planetary ball mill and is fully ground 8 hours, is formed after grinding and ground
Be transferred to abrasive material in high temperature furnace in 1000-2000 mesh by mill thing, the particle of abrasive material, is warming up to 800 DEG C of sintering, after cooling
The solid for arriving is the zinc-based compounds of lithium, and the granular size and sintering temperature of above-mentioned abrasive material make the zinc-based compounds of generation
Material skeleton there is rock-steady structure, weigh zinc-based compounds 5g, passed through pulverizer and be ground into graininess, add
The aqueous solution of nitric acid 500ml of 0.5mol/L, intermittent oscillation 2d, period, are separated off supernatant in 25 DEG C of water bath with thermostatic control
The aqueous solution of nitric acid that more renews simultaneously, so repeatedly 2 times, particulate matter is formed after being finally recovered out supernatant, is washed out, and is dried
It is dry, you can to obtain zinc-base lithium ion extraction material, the drying temperature of above-mentioned precipitation particulate matter is 80 DEG C.Experimental result shows, this
Zinc-base lithium ion extraction material reaches 4.6mgg to the saturation exchange capacity of Li ions-1。
General principle of the invention and principal character and advantages of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not limited to the above embodiments, simply explanation described in above-described embodiment and specification this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appending claims and its
Equivalent thereof.
Claims (4)
1. a kind of preparation method of zinc-base lithium ion extraction material, it is characterised in that comprise the following steps：
(1) pure cerium hydroxide lithium, zinc hydroxide and ammonium dihydrogen phosphate (0.6~1.4)/(0.8~1.2)/1 in molar ratio will be analyzed
After ratio mixing, it is fully ground to form abrasive material under normal temperature；
(2) obtained abrasive material in step (1) is transferred in high temperature furnace, is warming up to 700~800 DEG C of sintering, obtained after cooling
Solid is the zinc-based compounds of lithium；
(3) obtained compound powder in step (2) is broken into graininess, is placed in the nitric acid that concentration is 0.5~1.21mol/L water-soluble
In liquid, shaken under 25 DEG C of constant temperature, the lithium ion in compound separates out be transferred in supernatant completely, after isolating supernatant
Form particulate matter；
(4) obtained particulate matter filtration drying in step (3) is obtained into lithium ion extraction material.
2. the preparation method of zinc-base lithium ion extraction material according to claim 1, it is characterised in that：The step (1)
In, to adding dispersant and organic solvent in the mixture of lithium hydroxide, zinc hydroxide and ammonium dihydrogen phosphate and be mixed into slurry
It is ground, dispersant is stearic acid, accounts for the 0.18%~0.22% of said mixture gross mass, organic solvent is ethanol, is accounted for
The 9%~11% of said mixture gross mass.
3. the preparation method of zinc-base lithium ion extraction material according to claim 1, it is characterised in that：The step (3)
In, granular compound intermittent oscillation 2d, period in 25 DEG C of water bath with thermostatic control, supernatant is separated off while more renewing
Aqueous solution of nitric acid, so repeatedly at least 2 times.
4. the preparation method of zinc-base lithium ion extraction material according to claim 1, it is characterised in that：In step (4)
Drying temperature is 80~140 DEG C.
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