CN103922626A - Treating method for byproduct lithium residue of salt lake lithium extraction, concrete alkali-aggregate reaction inhibitor and application thereof - Google Patents
Treating method for byproduct lithium residue of salt lake lithium extraction, concrete alkali-aggregate reaction inhibitor and application thereof Download PDFInfo
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- CN103922626A CN103922626A CN201410150737.1A CN201410150737A CN103922626A CN 103922626 A CN103922626 A CN 103922626A CN 201410150737 A CN201410150737 A CN 201410150737A CN 103922626 A CN103922626 A CN 103922626A
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- lithium
- concrete
- salt lake
- inhibitor
- alkali
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 62
- 239000006227 byproduct Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000002683 reaction inhibitor Substances 0.000 title abstract description 5
- 238000000605 extraction Methods 0.000 title abstract description 4
- 239000003112 inhibitor Substances 0.000 claims abstract description 16
- 238000005406 washing Methods 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 6
- 239000000047 product Substances 0.000 claims abstract description 4
- 238000007873 sieving Methods 0.000 claims abstract description 4
- 239000007787 solid Substances 0.000 claims abstract 2
- 239000002893 slag Substances 0.000 claims description 31
- 238000001556 precipitation Methods 0.000 claims description 8
- 238000004062 sedimentation Methods 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 16
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 230000005764 inhibitory process Effects 0.000 abstract description 3
- 230000002787 reinforcement Effects 0.000 abstract description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 4
- 238000000151 deposition Methods 0.000 abstract 2
- 238000000227 grinding Methods 0.000 abstract 2
- 239000011780 sodium chloride Substances 0.000 abstract 2
- 239000004615 ingredient Substances 0.000 abstract 1
- 239000003513 alkali Substances 0.000 description 25
- 239000004568 cement Substances 0.000 description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000000203 mixture Substances 0.000 description 9
- DPDMMXDBJGCCQC-UHFFFAOYSA-N [Na].[Cl] Chemical compound [Na].[Cl] DPDMMXDBJGCCQC-UHFFFAOYSA-N 0.000 description 8
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 239000011734 sodium Substances 0.000 description 7
- 239000004570 mortar (masonry) Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000011398 Portland cement Substances 0.000 description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 description 5
- 239000011707 mineral Substances 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000012267 brine Substances 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 2
- 239000000347 magnesium hydroxide Substances 0.000 description 2
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910001415 sodium ion Inorganic materials 0.000 description 2
- 241001131796 Botaurus stellaris Species 0.000 description 1
- 241000370738 Chlorion Species 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- -1 admixture Substances 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052808 lithium carbonate Inorganic materials 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012254 powdered material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a treating method for byproduct lithium residue of salt lake lithium extraction. The method comprises the following steps: 1) grinding the byproduct lithium residue of salt lake lithium extraction and then sieving; 2) washing products after sieving, depositing, filtering, collecting solid bodies and drying. The invention also discloses an inhibitor prepared by using the method. According to the invention, by the proper processes of grinding, washing, depositing, filtering, drying and the like, the ratio of harmful ingredient sodium chloride in the lithium residue can be reduced, so that the concrete alkali-aggregate reaction inhibitor which is excellent in performance and low in price can be prepared. The inhibitor can be used for preventing the sodium chloride from intensifying the corrosion of concrete reinforcement and a concrete alkali-aggregate reaction, and has the characteristics of less doping amount and good inhibition effect.
Description
Technical field
The invention belongs to Salt Lake Chemistry field, be specifically related to a kind of salt lake and propose the treatment process of lithium by-product lithium slag, concrete alkali aggregate reaction inhibitor and application thereof.
Background technology
Concrete alkali-aggregate reaction (Alkali-Aggregate Reaction is called for short AAR) is the free alkali metal ion (Na in concrete
+, K
+deng) and reactive aggregate between a kind of swelling property of occurring react, be the major cause that causes concrete durability to decline, once occur, be difficult to stop more difficult improvement, be called as concrete " cancer ", AAR reaction has become the second largest disease that is only second to steel bar corrosion in concrete structure.
At present, the major measure that prevents concrete alkali-aggregate reaction (AAR) has following measure:
(1) use inert aggregate.Using inert aggregate is to prevent the most safe and reliable measure of expanding of gathering materials of concrete generation alkali.But China's reactive aggregate particularly siliceous reactive aggregate distribute with respect to inert aggregate more extensive, and aggregate resource is non-renewable, aggregate resource constantly consumes and the effects limit such as construction costs the selection of aggregate.In addition, to evaluation aggregate basic active, the potential basic active of aggregate that particularly expands slowly there is no cocksure method at present.Therefore, the use of inert aggregate can be subject to the restriction of region and economic aspect.
(2) control concrete alkali content.AAR is a chemical reaction, when higher alkali content is during lower than certain value, AAR reaction be difficult to occur or level of response lighter, deficiency so that concrete cracking destroy.Restriction concrete alkalinity, generally sets about from reduction cement, admixture, mineral admixture alkali content.China's standard specifies that alkalinity is low alkali cement lower than 0.6% cement.The U.S., Britain, Japan, New Zealand etc. once also adopted identical standard to reduce the alkali content in concrete, and this has alleviated AAR problem to a certain extent.But in recent years, be widely used containing alkali admixture, and contained alkali be mostly effective alkali, it is further difficult that this makes to limit higher alkali content.
(3) controlling moisture.There are some researches show, reduce relative humidity, can reduce AAR and expand.But the residing humidity condition of concrete works is uppity, and the factor such as drying and watering cycle can also cause the migration of alkali in concrete and in Local enrichment, thus aggravation AAR.It is generally acknowledged that AAR will occur when relative humidity is lower than 80% time.But Americanologist is crossed on-the-spot test and shown, even if highway pavement and other highway structureses are under desert climate condition, also there are enough moistures to cause AAR.Research shows that residual water-content and the outside moisture in concrete is enough to make AAR to be proceeded.Therefore, only depend on waterproof measure can not fundamentally stop AAR.
(4) use mineral admixture or chemical admixture.Use the mineral admixture replacing section cement such as flyash, silicon ash and slag, can delay or suppress AAR and expand.But, because need to having quite high volume, mineral admixture just may effectively suppress AAR, and this brings disadvantageous effect often to other performance of concrete.Large quantity research shows, the salt of a small amount of alkali metal containing lithium of admixture has certain restraining effect to AAR.Suppressing the more consistent explanation of AAR ratio of expansion for lithium salts is: with Na
+(K
+) compare Li
+have less ionic radius, higher electric density, causes that L-S has stronger ionic bond power compared with N-S and K-S, causes Li thus
+replace Na+ (K
+) preferentially forming the reaction product L-S-H of non-expansibility, these finer and close products have stoped Na around being wrapped in and gathering materials
+(K
+) to the further erosion of gathering materials.Compared with mixing mineral admixture, use chemical admixture needn't change concrete execution conditions, operation is simple and feasible, and addition content is few, and is easily accepted in the widely used contemporary engineering of admixture.But the salt cost of alkali metal lithium is very high, mainly at theoretical side, going back of practical application is little.And corresponding be that a large amount of lithium slags that produce in the performance history of domestic salt lake cannot be fully used.Since the industrialized production of lithium is proposed in domestic employing salt lake, the lithium slag of its by-product, because foreign matter content is high and impurity separation difficulty, does not all find the new approach that utilizes always, is difficult to be made full use of, cause the wasting of resources in Salt Lake Area, affected salt lake brine and propose the normal production of lithium industry.
Therefore, in concrete works technical field, in order to improve concrete weather resistance, improve concrete construction quality, and extend its work-ing life and reduce maintenance cost, in the urgent need to a kind of low price and can suppress the admixture of concrete alkali aggregate reaction.
Summary of the invention
The object of the present invention is to provide that a kind of cost is low, volume is few, preparation method simply, does not affect mechanical performance of concrete, can effectively suppress the preparation method of the inhibitor of concrete expansion, the inhibitor preparing and application thereof.
Preparation method of the present invention comprises: the preparation method of inhibitor for a kind of concrete alkali aggregate reaction, comprises the steps:
1) salt lake is carried after lithium by-product lithium slag grinds and being sieved;
2) product after sieving through washing, precipitation, filter and dry, obtain the inhibitor that concrete alkali aggregate reaction is used.
The by-product powdered material of lithium by-product lithium slag for producing in salt lake brine extraction Quilonum Retard technological process carried in described salt lake, composition mainly comprises Quilonum Retard, magnesium hydroxide, calcium carbonate, sodium-chlor etc., its concrete composition changes to some extent according to the technique adopting, but its main body composition is similar.Such as Chinese patent open file CN102976367A discloses a kind of method of utilizing salt lake brine to produce battery-level lithium carbonate, the method is used selective membrane separating technology separated salt lake bittern water, has finally obtained the lithium slag that contains Quilonum Retard, magnesium hydroxide, calcium carbonate, sodium-chlor etc.In described lithium slag, objectionable constituent are mainly sodium-chlor, and because of the reinforcing bar in chlorion meeting corrosion concrete, and sodium ion can increase the alkali content in concrete, thereby causes the generation of Concrete AR reaction.
Preferably, step 1) in sieve by salt lake carry lithium by-product lithium slag grind after cross 100～180 mesh sieves.
Preferably, step 2) described in washing temperature be 80 DEG C～120 DEG C, preferably 100 DEG C, until the sodium-chlor in lithium slag is all cleaned.
Preferably, step 2) described in drying temperature be 80～110 DEG C, preferably 100 DEG C.
Preferably, step 2) described in time of drying be 10～24h, preferably 24h.
Preferably, step 2) described sedimentation time is 1h～3h, preferably 1.5h.Precipitation not only can allow the sodium-chlor in lithium slag have time enough to dissolve, and can make water-fast other composition in lithium slag by standing separation, be conducive to filtration, separating impurity sodium-chlor.
As stated above, can prepare a kind of concrete alkali aggregate reaction inhibitor, this inhibitor can be at concrete works field replacing partial cement or add as additive, prevents or suppresses the generation that Concrete AR expands.
The present invention is by suitable ball milling, washing, precipitation, filtration, the operation such as dry, reduce the ratio of the objectionable constituent sodium-chlor in lithium slag, can make the inhibitor that functional, cheap concrete alkali aggregate reaction is used, this inhibitor has been avoided the aggravation of sodium-chlor to concrete reinforcement corrosion and alkali, has the advantages that volume is few, inhibition is good.The present invention has not only solved salt lake and has put forward the lithium resource waste problem in lithium process, also provides one inhibitor cheaply for suppressing concrete alkali.
Brief description of the drawings
Fig. 1, salt lake brine are put forward the XRD figure of lithium by-product lithium slag.
Fig. 2, mix and carry the lithium by-product lithium dreg concrete rate of expansion figure in the different length of times.
Embodiment
Comparative example 1 ordinary Portland cement C42.5, adopts quick mortar bars method, and the mass ratio of its cement and sand is 1:2.25, and water cement ratio 0.47, controlling temperature (40 ± 2) DEG C, is tested its rate of expansion under the condition of relative humidity 95%.
Embodiment carries in 1 raw material salt lake lithium by-product lithium slag from Qinghai Li Ye company limited, and chemical composition is: Mg
2+containing 33.82%, Li
+containing 2.70%, Ca
2+containing 1.54%, Na
+containing 0.52%, Cl
-containing 1.85%, SO
4 2-containing 0.002%, K
+containing 0.14.
Lithium by-product lithium slag is carried in raw material salt lake and be milled to 100 orders, then use after the water washing of 100 DEG C, precipitation 1.5h, then calcine 24h at 80 DEG C, obtain the inhibitor of concrete alkali aggregate reaction.
Ordinary Portland cement C42.5, adopts quick mortar bars method, adopts 30% salt lake Quilonum Retard by-product lithium slag replacement part of cement consumption, the mass ratio of its cement and sand is 1:2.25, water cement ratio 0.47, controlling temperature (40 ± 2) DEG C, tests its rate of expansion under the condition of relative humidity 95%.Can find out from table 1 and Fig. 2, compare in comparative example 1, the rate of expansion of embodiment 1 has obviously obtained inhibition.
Table 1 is mixed the rate of expansion of the concrete mortar rod of salt lake lithium slag
Embodiment carries in 2 raw material salt lakes lithium by-product lithium slag from Qinghai Li Ye company limited, and chemical composition is: Mg
2+containing 33.82%, Li
+containing 2.70%, Ca
2+containing 1.54%, Na
+containing 0.52%, Cl
-containing 1.85%, SO
4 2-containing 0.002%, K
+containing 0.14.
Lithium by-product lithium slag is carried in raw material salt lake and be milled to 180 orders, then use after the water washing of 100 DEG C, precipitation 1.5h, then calcine 18h at 80 DEG C, obtain the inhibitor of concrete alkali aggregate reaction.
Ordinary Portland cement C42.5, adopts quick mortar bars method, adopts 5% salt lake Quilonum Retard by-product lithium slag replacement part of cement consumption, the mass ratio of its cement and sand is 1:2.25, water cement ratio 0.47, controlling temperature (40 ± 2) DEG C, tests its rate of expansion under the condition of relative humidity 95%.
Embodiment carries in 3 raw material salt lakes lithium by-product lithium slag from Qinghai Li Ye company limited, and chemical composition is: Mg
2+containing 33.82%, Li
+containing 2.70%, Ca
2+containing 1.54%, Na
+containing 0.52%, Cl
-containing 1.85%, SO
4 2-containing 0.002%, K
+containing 0.14.
Lithium by-product lithium slag is carried in raw material salt lake and be milled to 120 orders, then use after the water washing of 120 DEG C, precipitation 1h, then calcine 10h at 80 DEG C, obtain the inhibitor of concrete alkali aggregate reaction.
Ordinary Portland cement C42.5, adopts quick mortar bars method, adopts 10% salt lake Quilonum Retard by-product lithium slag replacement part of cement consumption, the mass ratio of its cement and sand is 1:2.25, water cement ratio 0.47, controlling temperature (40 ± 2) DEG C, tests its rate of expansion under the condition of relative humidity 95%.
Embodiment carries in 4 raw material salt lakes lithium by-product lithium slag from Qinghai Li Ye company limited, and chemical composition is: Mg
2+containing 33.82%, Li
+containing 2.70%, Ca
2+containing 1.54%, Na
+containing 0.52%, Cl
-containing 1.85%, SO
4 2-containing 0.002%, K
+containing 0.14.
Lithium by-product lithium slag is carried in raw material salt lake and be milled to 180 orders, then use after the water washing of 80 DEG C, precipitation 1h, then calcine 24h at 110 DEG C, obtain the inhibitor of concrete alkali aggregate reaction.
Ordinary Portland cement C42.5, adopts quick mortar bars method, adopts 50% salt lake Quilonum Retard by-product lithium slag replacement part of cement consumption, the mass ratio of its cement and sand is 1:2.25, water cement ratio 0.47, controlling temperature (40 ± 2) DEG C, tests its rate of expansion under the condition of relative humidity 95%.
The data such as the rate of expansion of above-described embodiment are referring to table 1 and Fig. 2.
Claims (8)
1. a treatment process for lithium by-product lithium slag is put forward in salt lake, comprises the steps:
1) salt lake is carried after lithium by-product lithium slag grinds and being sieved;
2) product after sieving through washing, precipitation, filter, collect solid dry.
2. method according to claim 1, is characterized in that step 1) in by salt lake carry lithium by-product lithium slag grind after cross 100～180 mesh sieves.
3. method according to claim 1, is characterized in that step 2) described in washing temperature be 80 DEG C～120 DEG C.
4. method according to claim 1, is characterized in that step 2) described in drying temperature be 80～110 DEG C.
5. method according to claim 1, is characterized in that step 2) described in time of drying be 10～24h.
6. method according to claim 1, is characterized in that step 2) described sedimentation time is 1h～3h.
7. according to the prepared inhibitor of claim 1～6 either method.
8. the application of inhibitor in concrete works technical field described in claim 7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410150737.1A CN103922626B (en) | 2014-04-15 | 2014-04-15 | The treatment process of lithium by-product lithium slag, concrete alkali aggregate reaction inhibitor and application thereof are proposed in a kind of salt lake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410150737.1A CN103922626B (en) | 2014-04-15 | 2014-04-15 | The treatment process of lithium by-product lithium slag, concrete alkali aggregate reaction inhibitor and application thereof are proposed in a kind of salt lake |
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| Publication Number | Publication Date |
|---|---|
| CN103922626A true CN103922626A (en) | 2014-07-16 |
| CN103922626B CN103922626B (en) | 2016-01-06 |
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|---|---|---|---|
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108273826A (en) * | 2018-01-17 | 2018-07-13 | 税欣 | A kind of complete mutually high-valued recoverying and utilizing method of lithium slag |
| CN108516706A (en) * | 2018-04-25 | 2018-09-11 | 中国科学院青海盐湖研究所 | A kind of special cement and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1594173A (en) * | 2004-07-05 | 2005-03-16 | 南京师范大学 | Alkali resistant aggregate reaction cement added with composite industrial residue and its firing method |
| CN203382518U (en) * | 2013-07-17 | 2014-01-08 | 西藏金睿资产管理有限公司 | System for differentially extracting lithium carbonate, NaCl and KCl in salt lake brine |
-
2014
- 2014-04-15 CN CN201410150737.1A patent/CN103922626B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1594173A (en) * | 2004-07-05 | 2005-03-16 | 南京师范大学 | Alkali resistant aggregate reaction cement added with composite industrial residue and its firing method |
| CN203382518U (en) * | 2013-07-17 | 2014-01-08 | 西藏金睿资产管理有限公司 | System for differentially extracting lithium carbonate, NaCl and KCl in salt lake brine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108273826A (en) * | 2018-01-17 | 2018-07-13 | 税欣 | A kind of complete mutually high-valued recoverying and utilizing method of lithium slag |
| CN108273826B (en) * | 2018-01-17 | 2018-12-11 | 成都绿锂环保科技有限公司 | A kind of complete mutually high-valued recoverying and utilizing method of lithium slag |
| CN108516706A (en) * | 2018-04-25 | 2018-09-11 | 中国科学院青海盐湖研究所 | A kind of special cement and preparation method thereof |
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