CN204162757U - A kind of impurity removed system to lithionite leach liquor - Google Patents
A kind of impurity removed system to lithionite leach liquor Download PDFInfo
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- CN204162757U CN204162757U CN201420688011.9U CN201420688011U CN204162757U CN 204162757 U CN204162757 U CN 204162757U CN 201420688011 U CN201420688011 U CN 201420688011U CN 204162757 U CN204162757 U CN 204162757U
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- leach liquor
- lithionite
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- impurity removed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
To an impurity removed system for lithionite leach liquor, comprising: lithionite leach liquor container, its with for removing the CaCl of sulfate radical
2add device to be communicated with; Nano ceramics film device, it is arranged on the downstream of lithionite leach liquor container, with lithionite leach liquor reservoir, and has the feedback channel to lithionite leach liquor container; Nano filter membrance device, it is arranged on the downstream of nano ceramics film device, is communicated with nano ceramics film device, carries out being separated of monovalent ion and polyvalent ion to leach liquor clear liquid; Receive liquid bucket, it is arranged on the downstream of nano filter membrance device, is communicated with nano filter membrance device, and this receipts liquid bucket is communicated with reverse osmosis membrane concentrating unit, this reverse osmosis membrane concentrating unit with sinker, analyse salt, carry the product vessel of rubidium caesium and be communicated with; For holding the original liquid box of polyvalent ion and sulfate radical, it is also arranged on the downstream of nano filter membrance device.The utility model can reduce the rate of loss of lithionite leach liquor lithium, rubidium, caesium in dedoping step, can reduce energy consumption simultaneously.
Description
Technical field
The utility model relates to a kind of impurity removed system of lithionite leach liquor, and especially integrated membrane process, chemical precipitation method carry out removal of impurities to lithionite leach liquor, belong to metallurgical technology field.
Background technology
Have employed in the lithionite leach liquor of sulphate process and contain a large amount of impurity elements, mainly contain aluminium, iron, manganese, magnesium.
For a long time, the method of carrying out removal of impurities to lithionite leach liquor mainly adopts the step-by-step precipitation method by control ph, impurity-eliminating effect is obvious, but, the rate of loss of lithium, rubidium, caesium is too high, and, in precipitation process, need heating, this has had a strong impact on the rate of recovery of lithium, rubidium, caesium, and too increases energy consumption.
But, in the art, adopt traditional technique always, define thinking inertia, although need the rate of loss reducing lithionite leach liquor lithium, rubidium, caesium in dedoping step, need to reduce energy consumption, but those skilled in the art is unwilling to change the status quo, also how never people's thinking goes to change the status quo.
Utility model content
The utility model object is to provide a kind of impurity removed system of lithionite leach liquor, and it can reduce the rate of loss of lithionite leach liquor lithium, rubidium, caesium in dedoping step, can reduce energy consumption simultaneously.
For this reason, the utility model provides a kind of impurity removed system of lithionite leach liquor, it is characterized in that, comprising:
Lithionite leach liquor container, its with for removing the CaCl of sulfate radical
2add device to be communicated with;
For the nano ceramics film device of solid-liquid separation, it is arranged on the downstream of lithionite leach liquor container, with lithionite leach liquor reservoir, and has the feedback channel to lithionite leach liquor container;
Nano filter membrance device, it is arranged on the downstream of nano ceramics film device, is communicated with nano ceramics film device, carries out being separated of monovalent ion and polyvalent ion to leach liquor clear liquid;
For holding the receipts liquid bucket of monovalent ion lithium, rubidium, caesium, potassium, sodium and chlorine, it is arranged on the downstream of nano filter membrance device, be communicated with nano filter membrance device, this receipts liquid bucket is communicated with reverse osmosis membrane concentrating unit, this reverse osmosis membrane concentrating unit with sinker, analyse salt, carry the product vessel of rubidium caesium and be communicated with;
For holding the original liquid box of divalence and polyvalent ion Fe, Al, Mn, Mg and sulfate radical, it is also arranged on the downstream of nano filter membrance device.
Preferably, original liquid box is communicated with the first pH value control device.
Preferably, in the downstream of the first pH value control device, also strainer is provided with.
Preferably, strainer is communicated with the first liquid filtering appts with ferric hydroxide precipitate collection container respectively.
Preferably, the first liquid filtering appts is communicated with the second pH value control device.
Preferably, the second pH value control device is communicated with the second liquid filtering appts with aluminum hydroxide precipitation collection container.
Preferably, the second liquid filtering appts is communicated with the 3rd pH value control device.
Preferably, the 3rd pH value control device is communicated with the 3rd liquid filtering appts with manganous hydroxide collection container.
Preferably, the 3rd liquid filtering appts is communicated with calcium carbonate adding set, and calcium carbonate adding set is communicated with the 4th liquid filtering appts with magnesium hydroxide collection container.
Preferably, the 4th liquid filtering appts is also communicated with receipts liquid bucket.
According to the utility model, first utilize ceramic membrane to carry out solid-liquid separation to leach liquor, to remove the solid impurity in leach liquor, then, recycling nanofiltration membrane carries out being separated, to remove the impurity such as Fe, Al, Mn, Mg of monovalent ion and polyvalent ion.
According to the utility model, by utilizing ceramic membrane first to carry out solid-liquid separation to leach liquor, avoid the problem of suction filtration difficulty.
According to the utility model, carry out being separated of monovalent ion and polyvalent ion by nanofiltration membrane, effectively can remove the impurity such as Fe, Al, Mn, Mg, meanwhile, in this process, at all without the need to heating, thus reduce energy consumption.
According to the utility model, in one embodiment, the rate of loss of lithium can be down to 2.6%, and the rate of loss of rubidium can be down to 3.3%, and the rate of loss of caesium can be down to 3.5%.According to the utility model, in another embodiment, the rate of loss of lithium can be down to 2.4%, and the rate of loss of rubidium can be down to 3.1%, and the rate of loss of caesium can be down to 3.3%.This is not only useful technique effect, and is unforeseeable technique effect.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of the impurity removed system according to lithionite leach liquor of the present utility model.
Embodiment
As shown in Figure 1, in an embodiment of the present utility model, in lithionite leach liquor container 1, first CaCl is added
2removing sulfate radical, nano ceramics film device 2 is adopted to carry out solid-liquid separation again, gained clear liquid enters nano filter membrance device 3, and by carrying out being separated of monovalent ion and polyvalent ion to leach liquor clear liquid, monovalent ion lithium, rubidium, caesium, potassium, sodium and chlorine are collected into by nano filter membrance device 3 and receive liquid bucket 4; And divalence and polyvalent ion Fe, Al, Mn, Mg and sulfate radical are trapped within original liquid box.The monovalent ion received in liquid bucket 4 is concentrated by reverse osmosis membrane again, can adopt traditional method sinker, analyses salt, carry rubidium caesium.
Polyvalent ion in original liquid box controls pH value by sodium hydroxide between 3-4.5, the ferric hydroxide precipitate obtained through strainer 5 is collected in container 6, pH value in liquid filtering appts 7 is controlled between 4.5-7.5, container 8 is collected in through filtering the aluminum hydroxide precipitation obtained, pH value in liquid filtering appts 9 is controlled between 7.5-10.5, container 10 is collected in through filtering the manganous hydroxide precipitation obtained, calcium carbonate is added in liquid filtering appts 11, container 12 is collected in through filtering the magnesium hydrate precipitate obtained, clear liquid in liquid filtering appts 13 is collected into and receives liquid bucket 4.
Lithionite concentrate, as the byproduct of tantalum niobium concentrate selecting and purchasing, not only contains the Li of 3.5-4.3%
2o, the Rb also containing 0.8-1.2%
2the Cs of O, 0.2-0.4%
2o, cheap, form the throughput of 150,000 tons/year.
The utility model, based on the lithionite leach liquor obtained by sulphate process, first adds CaCl
2removing sulfate radical, nano ceramics film is adopted to carry out solid-liquid separation, gained clear liquid enters nanofiltration membrane, control ph is between 2-11, pressure is adjusted between 5-40MPa, carry out being separated of monovalent ion and polyvalent ion to leach liquor clear liquid, monovalent ion lithium, rubidium, caesium, potassium, sodium and chlorine are by nanofiltration membrane to receiving liquid bucket, and divalence and polyvalent ion Fe, Al, Mn, Mg and sulfate radical are trapped within original liquid box and reach monovalent ion and polyvalent ion separating effect.Polyvalent ion in original liquid box carries out fractional precipitation, can obtain the byproducts such as ironic hydroxide, aluminium hydroxide, manganous hydroxide, magnesium hydroxide, and in receipts liquid bucket, monovalent ion is concentrated by reverse osmosis membrane and can adopt traditional method sinker, analyses salt, carries rubidium caesium.
Embodiment: get 200L lithionite leach liquor, add CaCl
2removing sulfate radical, adopt nano ceramics film to carry out solid-liquid separation, obtain 192L solution after filtration, be divided into four parts, every part of 48L is for subsequent use.
Embodiment 1: get the above-mentioned solution of a 48L, adjust pH is that 2-2.5 is (if having Fe (OH) because pH value is greater than 2.5
3separate out), be carry out being separated of monovalent ion and polyvalent ion in the nanofiltration membrane of 25MPa at pressure, obtain filtrate 42L (be separated if continue, then filtration velocity is excessively slow, energy consumption increase), lithium transmitance is 78.5%.In original liquid box after fractional precipitation, in stoste, lithium have lost 3.1%.In dedoping step, total recovery is 96.9%, and lithium rate of loss is 3.1%.
Embodiment 2: get the above-mentioned solution of a 48L, adjust pH is that 2-2.5 is (if having Fe (OH) because pH value is greater than 2.5
3separate out), be carry out being separated of monovalent ion and polyvalent ion in the nanofiltration membrane of 30MPa at pressure, obtain filtrate 42L (be separated if continue, then filtration velocity is excessively slow, energy consumption increase), lithium transmitance is 80.3%.In original liquid box after fractional precipitation, in stoste, lithium have lost 2.9%.In dedoping step, total recovery is 97.1%, and lithium rate of loss is 2.9%.
Embodiment 3: get the above-mentioned solution of a 48L, adjust pH is that 2-2.5 is (if having Fe (OH) because pH value is greater than 2.5
3separate out), be carry out being separated of monovalent ion and polyvalent ion in the nanofiltration membrane of 35MPa at pressure, obtain filtrate 42L, lithium transmitance is 82.6%.In original liquid box after fractional precipitation, in stoste, lithium have lost 2.6%.In dedoping step, total recovery is 97.4%, and lithium rate of loss is 2.6%.
Embodiment 4: get the above-mentioned solution of a 48L, adjust pH is that 2-2.5 is (if having Fe (OH) because pH value is greater than 2.5
3separate out), be carry out being separated of monovalent ion and polyvalent ion in the nanofiltration membrane of 40MPa at pressure, obtain filtrate 42L, lithium transmitance is 82.6%.In original liquid box after fractional precipitation, in stoste, lithium have lost 2.6%.In dedoping step, total recovery is 97.4%, and lithium rate of loss is 2.6%.
According to the utility model, also have solid objects to exist in leach liquor, first must remove solid objects, then carry out being separated of monovalent ion and polyvalent ion.
According to the utility model, add calcium chloride and mainly introduce chlorion, part removes sulfate ion.
When implementing the utility model, first first solid-liquid separation is carried out to leach liquor, so that suction filtration; Carry out being separated of monovalent ion and polyvalent ion again, to remove the impurity such as Fe, Al, Mn, Mg (in this process, at all without the need to heating, thus reducing energy consumption).
Preferably, ceramic membrane is utilized to carry out solid-liquid separation to leach liquor, to remove the fine grain size solid impurity of suction filtration machine hard-pumped in leach liquor.
Preferably, carry out being separated of monovalent ion and polyvalent ion by nanofiltration membrane, most of monovalent ion is separated with polyvalent ion, reduce the loss of monovalent ion.
Preferably, chemical fractional precipitation is carried out to the dope (containing nearly all polyvalent ion and a small amount of monovalent ion) not by nanofiltration membrane and reclaims Fe, Al, Mn, Mg, turn waste into wealth.
Preferably, the rate of loss of lithium can be down to 2.6%, and the rate of loss of rubidium can be down to 3.3%, and the rate of loss of caesium can be down to 3.5%.
Preferably, the rate of loss of lithium can be down to 2.4%, and the rate of loss of rubidium can be down to 3.1%, and the rate of loss of caesium can be down to 3.3%.
Preferably, lithionite leach liquor comes from lithionite concentrate; Lithionite concentrate is the byproduct of tantalum niobium concentrate selecting and purchasing; And/or lithionite concentrate contains the Li of 3.5-4.3%
2o, also containing the Rb of 0.8-1.2%
2the Cs of O, 0.2-0.4%
2o.
Preferably, lithionite leach liquor is obtained by sulphate process.
Preferably, first CaCl is added
2part removing sulfate radical introduces chlorion, adopts nano ceramics film to carry out solid-liquid separation.
Preferably, gained clear liquid enters nanofiltration membrane, control ph is between 2-11, pressure is adjusted between 5-40MPa, being separated of monovalent ion and polyvalent ion is carried out to leach liquor clear liquid, monovalent ion lithium, rubidium, caesium, potassium, sodium and chlorine are by nanofiltration membrane to receiving liquid bucket, and divalence and polyvalent ion Fe, Al, Mn, Mg and sulfate radical are trapped within original liquid box and reach monovalent ion and polyvalent ion separating effect; And/or the polyvalent ion in original liquid box carries out fractional precipitation, can obtain the byproducts such as ironic hydroxide, aluminium hydroxide, manganous hydroxide, magnesium hydroxide, in receipts liquid bucket, monovalent ion is concentrated by reverse osmosis membrane and can adopt traditional method sinker, analyses salt, carries rubidium caesium.
Claims (10)
1. to an impurity removed system for lithionite leach liquor, it is characterized in that, comprising:
Lithionite leach liquor container, its with for removing the CaCl of sulfate radical
2add device to be communicated with;
For the nano ceramics film device of solid-liquid separation, it is arranged on the downstream of lithionite leach liquor container, with lithionite leach liquor reservoir, and has the feedback channel to lithionite leach liquor container;
Nano filter membrance device, it is arranged on the downstream of nano ceramics film device, is communicated with nano ceramics film device, carries out being separated of monovalent ion and polyvalent ion to leach liquor clear liquid;
For holding the receipts liquid bucket of monovalent ion lithium, rubidium, caesium, potassium, sodium and chlorine, it is arranged on the downstream of nano filter membrance device, be communicated with nano filter membrance device, this receipts liquid bucket is communicated with reverse osmosis membrane concentrating unit, this reverse osmosis membrane concentrating unit with sinker, analyse salt, carry the product vessel of rubidium caesium and be communicated with;
For holding the original liquid box of divalence and polyvalent ion Fe, Al, Mn, Mg and sulfate radical, it is also arranged on the downstream of nano filter membrance device.
2. impurity removed system as claimed in claim 1, it is characterized in that, original liquid box is communicated with the first pH value control device.
3. impurity removed system as claimed in claim 2, is characterized in that, in the downstream of the first pH value control device, be also provided with strainer.
4. impurity removed system as claimed in claim 3, it is characterized in that, strainer is communicated with the first liquid filtering appts with ferric hydroxide precipitate collection container respectively.
5. impurity removed system as claimed in claim 4, it is characterized in that, the first liquid filtering appts is communicated with the second pH value control device.
6. impurity removed system as claimed in claim 5, it is characterized in that, the second pH value control device is communicated with the second liquid filtering appts with aluminum hydroxide precipitation collection container.
7. impurity removed system as claimed in claim 6, it is characterized in that, the second liquid filtering appts is communicated with the 3rd pH value control device.
8. impurity removed system as claimed in claim 7, it is characterized in that, the 3rd pH value control device is communicated with the 3rd liquid filtering appts with manganous hydroxide collection container.
9. impurity removed system as claimed in claim 8, it is characterized in that, the 3rd liquid filtering appts is communicated with calcium carbonate adding set, and calcium carbonate adding set is communicated with the 4th liquid filtering appts with magnesium hydroxide collection container.
10. impurity removed system as claimed in claim 9, is characterized in that, the 4th liquid filtering appts is also communicated with receipts liquid bucket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420688011.9U CN204162757U (en) | 2014-11-17 | 2014-11-17 | A kind of impurity removed system to lithionite leach liquor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420688011.9U CN204162757U (en) | 2014-11-17 | 2014-11-17 | A kind of impurity removed system to lithionite leach liquor |
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| Publication Number | Publication Date |
|---|---|
| CN204162757U true CN204162757U (en) | 2015-02-18 |
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| CN201420688011.9U Expired - Fee Related CN204162757U (en) | 2014-11-17 | 2014-11-17 | A kind of impurity removed system to lithionite leach liquor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313321A (en) * | 2014-11-17 | 2015-01-28 | 赣州有色冶金研究所 | Impurity removal method and system for lepidolite leaching solution |
| CN115286016A (en) * | 2022-07-27 | 2022-11-04 | 浙江新锂想科技有限责任公司 | Method for extracting and preparing lithium product from lepidolite by using nanofiltration membrane |
-
2014
- 2014-11-17 CN CN201420688011.9U patent/CN204162757U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104313321A (en) * | 2014-11-17 | 2015-01-28 | 赣州有色冶金研究所 | Impurity removal method and system for lepidolite leaching solution |
| CN115286016A (en) * | 2022-07-27 | 2022-11-04 | 浙江新锂想科技有限责任公司 | Method for extracting and preparing lithium product from lepidolite by using nanofiltration membrane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150218 Termination date: 20161117 |
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| CF01 | Termination of patent right due to non-payment of annual fee |