CN205803020U - A kind of system of Production By Sulfuric Acid Process lithium salts - Google Patents
A kind of system of Production By Sulfuric Acid Process lithium salts Download PDFInfo
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- CN205803020U CN205803020U CN201620500779.8U CN201620500779U CN205803020U CN 205803020 U CN205803020 U CN 205803020U CN 201620500779 U CN201620500779 U CN 201620500779U CN 205803020 U CN205803020 U CN 205803020U
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Abstract
This utility model relates to the system of a kind of Production By Sulfuric Acid Process lithium salts, including: calciner, chiller, ore grinding device, acidifying kiln, leaching tanks, deblending slot, the first defecator, the second defecator, enrichment facility and the receipts captation being sequentially connected with.The system of this production lithium salts the first defecator, the second defecator and enrichment facility substitute plate-and-frame filtration device and the evaporation concentration device of existing system, improve strainability, improve separating and filtering effect, in the lithium carbonate finished product that native system produces, solid impurity content and calcium, magnesium ion content are effectively controlled, improve the waste water after the purity of lithium carbonate, and concentration can recycle, meet environmental protection standard, decrease resource loss, increase the benefit for enterprise.
Description
Technical field
This utility model relates to the system of a kind of Production By Sulfuric Acid Process lithium salts.
Background technology
Lithium is a kind of important strategic resources material, is the indispensable important source material of modern high technology product.China
The lithium resource gross reserves verified occupies second place of the world, but lithium yield only accounts for about the 5% of whole world total output, is only entering of lithium product
Mouth state.
Lithium carbonate is to produce secondary lithium salts and the basic material of lithium metal goods, thus it is maximum to become consumption in lithium industry
Lithium product, other lithium products are all the downstream product of lithium carbonate on it.The production technology of lithium carbonate is according to raw material sources
Difference can be divided into salt lake bittern to extract and Ore extracts.At present, external main employing salt lake bittern extraction process produces carbonic acid
Lithium, China mainly uses solid mineral extraction process.Although China is also actively exploiting saline lake lithium resource, but due to technology,
The restriction of the factors such as resource, development rate is the slowest.
Ore extracts lithium and mainly uses the solid lithium Ore such as spodumene, lepidolite to produce lithium carbonate and other lithium products.
Extracting the with a long history of lithium resource from Ore, technology is the most ripe, and main production has lime sinter process and sulfuric acid process, its
Middle sulfuric acid process is currently used main method.
In current Production By Sulfuric Acid Process lithium carbonate production process, commonly used is all traditional evaporating and concentrating process.This work
Skill is not only time-consuming, and efficiency is low, and the consumption to energy is relatively big, and this is the highest, simultaneously to environment to produce liter.
Former technological process: raw material-acidleach-filtration-evaporation and concentration-sinker-point profit washing-be dried-finished product.
Former defective workmanship:
1) using plate-and-frame filtration mode the filtration after remove impurity more, owing to filter cloth aperture is big, cause its precision relatively low so that filter
In rear feed liquid, solid content is higher, and then operation does not use effective means to carry out solid impurity interception so that product quality is relatively low；
2) evaporation and concentration needs steam-heating system to be evaporated lithium sulfate solution so that the moisture in solution becomes gas
State escapes, thus realizes the purpose concentrated.It is bigger that this technique determines substantial amounts of energy resource consumption, processing cost and difficulty.
3) this evaporating and concentrating process equipment needed thereby is more, and maintenance cost and difficulty are higher.
4) also to environment while evaporation and concentration waste water resource, it is unfavorable for that the sustainable health of enterprise is sent out
Exhibition.
Utility model content
Technical problem to be solved in the utility model is to provide the system of a kind of Production By Sulfuric Acid Process lithium salts, filters with first
Device, the second defecator and enrichment facility substitute plate-and-frame filtration device and the evaporation concentration device of existing system, improve
Filter performance, improves separating and filtering effect, solid impurity content and divalent calcium magnesium salt in the lithium carbonate finished product that native system produces
Content is effectively controlled, and improve the waste water after the purity of lithium carbonate, and concentration can recycle, and meets environmental protection mark
Standard, decreases resource loss, increases the benefit for enterprise.
The technical scheme that this utility model solves above-mentioned technical problem is as follows: the system of a kind of Production By Sulfuric Acid Process lithium salts, bag
Include: the calciner that is sequentially connected with, chiller, ore grinding device, acidifying kiln, leaching tanks, deblending slot, the first defecator, the
Two defecators, enrichment facility and receipts captation.
On the basis of technique scheme, this utility model can also do following improvement.
Further, described calciner is Muffle furnace or rotary kiln.
Further, described chiller is revolution cooling cylinder.
Further, described ore grinding device is ball mill.
Further, described first defecator is micro-filtration membrane.
Further, the material of described micro-filtration membrane is intermetallic compound porous material or ceramic membrane, and aperture is 0.1-20 μm.
Further, described intermetallic compound porous material is titanium aluminum.
Lithium sulfate leachate uses membrane filtration, by crossflow filtration technique and special membrane to use this step to provide the benefit that
(intermetallic compound porous material film), this film is obvious to the suspension effect that strainability is poor, and ensure that long-time
Stable operation, corrosion-resistant under sulfuric acid system.During micro-filtration membrane screening, inventor has taken into full account that filtering component (comprises solid miscellaneous
Matter composition), solid content, the parameter such as physicochemical properties of solid grain size and impurity, after a large amount of creative experiments really
This film fixed.
Further, described second defecator is NF membrane.
After using this step to provide the benefit that removing solid impurity, needing to remove calcium, magnesium ion again, former technique adjusts pH
Method precipitate, need add new reagent and precisely allocate.Calcium, magnesium ion are directly blocked by this novel employing membrane technology
Cut, be simple physical process, economize on resources, reduce production cost.
Further, described enrichment facility is reverse osmosis membrane or NF membrane.
The beneficial effects of the utility model are:
The system of this novel offer a kind of Production By Sulfuric Acid Process lithium salts, with the first defecator, the second defecator and concentration
Device substitutes plate-and-frame filtration device and the evaporation concentration device of existing system, improves strainability, improves separating and filtering effect
Really, it is effectively controlled with solid impurity content and calcium, magnesium ion content in the lithium carbonate finished product of native system production, improves carbon
Acid lithium purity, and concentrate after waste water can recycle, meet environmental protection standard, decrease resource loss, carry for enterprise
High benefit.
Accompanying drawing explanation
Fig. 1 is the system annexation schematic diagram of this utility model a kind of Production By Sulfuric Acid Process lithium salts；
In accompanying drawing, the list of parts representated by each label is as follows:
1, calciner, 2, chiller, 3, ore grinding device, 4, acidifying kiln, 5, leaching tanks, 6, deblending slot, the 7, first mistake
Filter device, the 8, second defecator, 9, enrichment facility, 10, receive captation.
Detailed description of the invention
Being described principle of the present utility model and feature below in conjunction with accompanying drawing, example is served only for explaining this practicality
Novel, it is not intended to limit scope of the present utility model.
Embodiment 1
As it is shown in figure 1, the system of a kind of Production By Sulfuric Acid Process lithium salts, including: the calciner 1 that is sequentially connected with, chiller
2, ore grinding device 3, acidifying kiln 4, leaching tanks 5, deblending slot the 6, first defecator the 7, second defecator 8, enrichment facility 9 and receipts
Captation 10.
In certain embodiments, described calciner 1 is Muffle furnace or rotary kiln.
In certain embodiments, described chiller 2 is revolution cooling cylinder.
In certain embodiments, described ore grinding device 3 is ball mill.
In certain embodiments, described first defecator 4 is micro-filtration membrane.
In certain embodiments, the material of described micro-filtration membrane is intermetallic compound porous material or ceramic membrane, hole
Footpath is 0.1-20 μm.
In certain embodiments, described intermetallic compound porous material is titanium aluminum.
In certain embodiments, described second defecator 8 is NF membrane.
In certain embodiments, described enrichment facility 9 is reverse osmosis membrane or NF membrane.
When native system is specifically applied, take spodumene concentrate, 1100 DEG C of roastings 0.5 hour in calciner 1, more cooled
Device 2 cools to 145 DEG C, obtains spodumene calcining；In ore grinding device 3, spodumene calcining is carried out ore grinding, obtain particle diameter little
Spodumene breeze in 80 mesh；Spodumene breeze is poured in acidifying kiln 4, in spodumene breeze, add the sulfur of concentration 98%
Acid, and roasting under conditions of 300 DEG C, obtain sour grog, and the residual acid weight/mass percentage composition controlling acid grog is 4%, acid grog stream
Enter in leaching tanks 5；Adding calcium carbonate in acid grog, the addition mole of calcium carbonate is 1.1 times of residual acid mole, obtains mixing
Thing, introduces a mixture in deblending slot 6, adds water in mixture, when the pH value of mixture is 6.0, carries out remove impurity, obtains and admittedly contain
The lithium sulfate leachate of amount more than 10%；Lithium sulfate leachate is filtered through the first defecator 7, removes solid impurity, make filter
In liquid, solid content is down to below 5ppm, and after prior art filtration treatment, the solid content of filtrate is 60-100ppm, and filtrate uses the second mistake
Filter device 8 removes divalent salts, obtains Li+Content is the desalinization liquor of 20-25g/L, and the concentrated device of desalinization liquor 9 concentrates, and obtains Li+Content
For the concentrated solution of 40-50g/L, collect the waste water concentrated with water collecting device 10, recycle；Concentrated solution is normal through this area
Rule means add soda saturated solution, make lithium carbonate precipitate, and filter, wash, be dried lithium carbonate precipitation, obtain lithium carbonate finished product, pure
Degree is more than 99%.After testing, in finished product lithium carbonate, Na, Mg, Al, Mn, Fe, Ni, Cu, Zn, Pb content is up to state standards the most.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all in this practicality
Within novel spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in guarantor of the present utility model
Within the scope of protecting.
Claims (4)
1. the system of a Production By Sulfuric Acid Process lithium salts, it is characterised in that including: the calciner that is sequentially connected with, chiller, mill
Ore deposit device, acidifying kiln, leaching tanks, deblending slot, the first defecator, the second defecator, enrichment facility and receipts captation, its
In, described first defecator is micro-filtration membrane, and the material of described micro-filtration membrane is intermetallic compound porous material or ceramic membrane, hole
Footpath is 0.1-20 μm, and described intermetallic compound porous material is titanium aluminum, and described second defecator is NF membrane, described concentration
Device is reverse osmosis membrane or NF membrane.
System the most according to claim 1, it is characterised in that described calciner is Muffle furnace or rotary kiln.
System the most according to claim 1, it is characterised in that described chiller is revolution cooling cylinder.
System the most according to claim 1, it is characterised in that described ore grinding device is ball mill.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620500779.8U CN205803020U (en) | 2016-05-26 | 2016-05-26 | A kind of system of Production By Sulfuric Acid Process lithium salts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620500779.8U CN205803020U (en) | 2016-05-26 | 2016-05-26 | A kind of system of Production By Sulfuric Acid Process lithium salts |
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| Publication Number | Publication Date |
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| CN205803020U true CN205803020U (en) | 2016-12-14 |
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| CN201620500779.8U Active CN205803020U (en) | 2016-05-26 | 2016-05-26 | A kind of system of Production By Sulfuric Acid Process lithium salts |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107115793A (en) * | 2017-05-15 | 2017-09-01 | 杭州瑞纳膜工程有限公司 | A kind of purifying concentration systems and method for the liquid of lithium containing magnesium |
| CN107828960A (en) * | 2017-11-08 | 2018-03-23 | 中国科学院过程工程研究所 | The collaboration extraction system and its processing method of magnesium and lithium in a kind of salt lake bittern |
| CN108314064A (en) * | 2018-02-09 | 2018-07-24 | 陕西省膜分离技术研究院有限公司 | The full membrane separating method of production lithium liquor is concentrated by salt lake bittern Multistage Membranes |
| CN108314065A (en) * | 2018-02-09 | 2018-07-24 | 陕西省膜分离技术研究院有限公司 | Divide the full membrane separating method that salt produces lithium liquor by salt lake bittern multistage nanofiltration |
-
2016
- 2016-05-26 CN CN201620500779.8U patent/CN205803020U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107115793A (en) * | 2017-05-15 | 2017-09-01 | 杭州瑞纳膜工程有限公司 | A kind of purifying concentration systems and method for the liquid of lithium containing magnesium |
| CN107115793B (en) * | 2017-05-15 | 2020-07-14 | 杭州瑞纳膜工程有限公司 | Purification and concentration system and method for magnesium-containing lithium liquid |
| CN107828960A (en) * | 2017-11-08 | 2018-03-23 | 中国科学院过程工程研究所 | The collaboration extraction system and its processing method of magnesium and lithium in a kind of salt lake bittern |
| CN107828960B (en) * | 2017-11-08 | 2019-04-30 | 中国科学院过程工程研究所 | The collaboration extraction system and its processing method of magnesium and lithium in a kind of salt lake bittern |
| CN108314064A (en) * | 2018-02-09 | 2018-07-24 | 陕西省膜分离技术研究院有限公司 | The full membrane separating method of production lithium liquor is concentrated by salt lake bittern Multistage Membranes |
| CN108314065A (en) * | 2018-02-09 | 2018-07-24 | 陕西省膜分离技术研究院有限公司 | Divide the full membrane separating method that salt produces lithium liquor by salt lake bittern multistage nanofiltration |
| CN108314064B (en) * | 2018-02-09 | 2020-04-07 | 陕西省膜分离技术研究院有限公司 | Full-membrane separation method for producing lithium extraction mother liquor by multi-stage membrane concentration of salt lake brine |
| CN108314065B (en) * | 2018-02-09 | 2020-04-07 | 陕西省膜分离技术研究院有限公司 | Full-membrane separation method for producing lithium extraction mother liquor by multi-stage nanofiltration separation of salt lake brine |
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