CN105369036A - Method for extracting vanadium from vanadium-containing high-concentration hydrochloric acid solution - Google Patents
Method for extracting vanadium from vanadium-containing high-concentration hydrochloric acid solution Download PDFInfo
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Abstract
The invention belongs to the field of hydrometallurgy and particularly relates to a method for extracting vanadium from a vanadium-containing high-concentration hydrochloric acid solution. The method mainly includes the steps of extraction, reverse extraction, strip liquor sedimentation and calcination, and the like, that is, an amine extraction agent and a neutral extraction agent are utilized for selectively extracting vanadium in the vanadium-containing high-concentration hydrochloric acid solution instead of impurities such as calcium, aluminum, magnesium, chromium, titanium, manganese and silicon in the solution; an organic phase loaded with vanadium is subjected to reverse extraction with a sulfuric acid solution or the hydrochloric acid solution or a sodium chloride solution or an ammonia water solution or water, and the organic phase subjected to reverse extraction can be returned to the extraction procedure for use; and a vanadium pentoxide product can be obtained by conducting edimentation and calcination on strip liquor. By means of the method, vanadium can be extracted from the solution with the hydrochloric acid concentration larger than 2.5 mol/L, the coefficient of separation of vanadium from the impurities such as calcium, aluminum, magnesium, chromium, titanium, manganese and silicon is large, the technological process is simple, and the extraction agents can be recycled.
Description
Technical field
The invention belongs to field of hydrometallurgy, particularly, the present invention relates to a kind of from containing the method extracting vanadium vanadium high salt concentration acid solution.
Background technology
Vanadium is a kind of important transition metal, and be widely used in the fields such as alloy, catalyzer, battery, advanced material with its excellent characteristic, vanadium titano-magnetite is the main source of vanadium.Along with the progress of aseptic technic, the advantages such as the high reaction activity that Leaching in Hydrochloric Acid vanadium titano-magnetite has due to it, high efficiency, energy consumption are low, hydrochloric acid can be recycled more and more attract the attention of people.How from the leach liquor of Leaching in Hydrochloric Acid vanadium titano-magnetite, extraction and application vanadium is significant.Chemical precipitation method mainly control condition makes vanadium generation selective precipitation, and technique is simple but the deposition rate of vanadium is not high, and precipitation can carry other impurity secretly simultaneously, and product purity is low.Ion exchange method can realize the separation of vanadium, but there is resin absorption finite capacity, regenerability is bad, production cost is high, problem such as operation more complicated, not easily large-scale continuous production etc.Extraction process is separated vanadium and has the advantage such as good separating effect, large, the easy continuous prodution of loading capacity, so the method for slective extraction is separated the vanadium in vanadium titano-magnetite hydrochloric acid leachate.
The extracting and separating of current vanadium is generally use amine extractant or acidic extractant, carry out extracting (see Chinese patent CN103276196A under the condition of pH=0 ~ 14, CN104532017A, CN102628101A), one section of patent is only had to discuss by chelating extractant extracting vanadium (see Chinese patent CN102851500A) from high-concentration sulfuric acid solution.And the leach liquor of vanadium titano-magnetite is generally strongly acidic solution, acidity, not in the scope of pH=0 ~ 14, extracts with common extraction agent, and the N-process of leach liquor needs to consume a large amount of alkali, and complex technical process, product cost is high.Because the existing forms of the vanadium ion in high salt concentration acid solution is complicated, vanadium ion has multiple existing forms, more difficult for the vanadium extracting and separating in high salt concentration acid solution.In order to solve the problem, the present invention proposes a kind of from containing the method extracting vanadium vanadium high salt concentration acid solution.Existing about extracting the patent documentation of vanadium there are no the patent or the bibliographical information that use vanadium in amine extractant and Neutral-neutral Extractants selective extraction high salt concentration acid solution.
Summary of the invention
The problem of extraction and application is difficult to for vanadium in bibliographical information high salt concentration acid solution, the object of this invention is to provide a kind of method extracting vanadium from high salt concentration acid solution, the selectivity efficient that the method can realize vanadium is separated, the impurity such as calcium, aluminium, magnesium, chromium, titanium, manganese and silicon are stayed in raffinate, and extraction agent can recycle after back extraction.
Of the present invention from containing the method extracting vanadium vanadium high salt concentration acid solution, comprise the following steps:
(1) by amine extractant and Neutral-neutral Extractants mixing, obtain mixing organic extractant; The volume ratio of described amine extractant and Neutral-neutral Extractants is 1:1 ~ 1:8;
(2) mixing organic extractant step (1) obtained and carry out hybrid extraction containing vanadium high salt concentration acid solution, phase-splitting after leaving standstill; Described mixing organic extractant is 3:1 ~ 1:10 with containing vanadium concentrated hydrochloric acid liquor capacity ratio;
(3) organic phase of load vanadium step (2) obtained carries out mixing back extraction with reverse-extraction agent, phase-splitting after leaving standstill, and obtains upper organic phase and strip liquor; The organic phase of described load vanadium and reverse-extraction agent volume ratio are 10:1 ~ 1:5;
(4) strip liquor step (3) obtained, after precipitation, calcining, obtains Vanadium Pentoxide in FLAKES product.
According to the method extracting vanadium from high salt concentration acid solution of the present invention, the amine extractant described in step (1) is tri-n-octyl methyl ammonium chloride or trialkylamine, and described trialkylamine such as preferably can use N235.
According to the method extracting vanadium from high salt concentration acid solution of the present invention, the Neutral-neutral Extractants described in step (1) is one or more the combination in Cyanex923, trioctyl-phosphine oxide and tributyl phosphate.When Neutral-neutral Extractants is two or more combination, can arbitrary proportion mixing between described Neutral-neutral Extractants.
According to of the present invention from containing the method extracting vanadium vanadium high salt concentration acid solution, described in step (2) is 2.5 ~ 4.5mol/L containing concentration of hydrochloric acid in vanadium high salt concentration acid solution.Described can be containing hydrochloric acid leachate after vanadium minerals vanadium extraction containing vanadium high salt concentration acid solution, the hydrochloric acid leachate etc. of such as vanadium titano-magnetite.The present invention is particularly useful for hydrochloric 2.5 ~ 4.5mol/L, simultaneously containing the solution of vanadium.
According to of the present invention from containing the method extracting vanadium vanadium high salt concentration acid solution, in extraction process described in step (2), thinner is used to dissolve mixing organic extractant, the volumetric concentration of the mixing organic extractant after dissolving in solution is 10% ~ 70%, extraction time is 0.1 ~ 15min, and extraction temperature is 15 ~ 65 DEG C.
According to of the present invention from containing the method extracting vanadium vanadium high salt concentration acid solution, described thinner is sulfonated kerosene or 260# solvent oil.
According to of the present invention from containing the method extracting vanadium vanadium high salt concentration acid solution, preferably, by the upper organic phase that step (3) obtains, return step (2) and be used for extraction as extraction agent.
According to of the present invention from containing the method extracting vanadium vanadium high salt concentration acid solution, the reverse-extraction agent described in step (3) is one or more the combination in sulphuric acid soln, hydrochloric acid soln, sodium chloride solution, ammonia soln and water.Described each reverse-extraction agent solution can be any concentration.When reverse-extraction agent is two or more combination, can arbitrary proportion mixing between described reverse-extraction agent.
According to of the present invention from containing the method extracting vanadium vanadium high salt concentration acid solution, in the stripping process described in step (3), Stripping times is 0.2 ~ 30min, and back extraction temperature is 15 ~ 65 DEG C.
According to of the present invention from containing the method extracting vanadium vanadium high salt concentration acid solution, the precipitation pH value described in step (4) is 0.5 ~ 3.5, and precipitation temperature is 60 ~ 110 DEG C, and sedimentation time is 0.2 ~ 4h.Concrete operations are: after regulating the pH value of strip liquor to 0.5 ~ 3.5, and 60 ~ 110 DEG C of insulations stir precipitation through 0.2 ~ 4h.
According to of the present invention from containing the method extracting vanadium vanadium high salt concentration acid solution, the calcining temperature described in step (4) is 400 ~ 700 DEG C, and calcination time is 0.2 ~ 4h.
The invention has the advantages that:
(1) the present invention utilizes the vanadium in amine extractant and Neutral-neutral Extractants selective extraction high salt concentration acid solution, and reaction conditions is gentle, solves the problem that vanadium in current strength hydrochloric acid leach liquor is difficult to utilize.
(2) the present invention utilizes amine extractant and Neutral-neutral Extractants extracting vanadium, and simultaneously the impurity such as calcium, aluminium, magnesium, chromium, titanium, manganese and silicon is not extracted, and the separation factor of vanadium and impurity element is large.
(3) after present invention achieves three grades of extractions, the percentage extraction of vanadium reaches more than 90%, and after one-level back extraction, the back extraction ratio of vanadium reaches more than 92%.
(4) the present invention use amine extractant and Neutral-neutral Extractants can realize recycling of extraction agent after back extraction.
Accompanying drawing explanation
Fig. 1 is of the present invention from containing the process flow sheet extracting the method for vanadium vanadium high salt concentration acid solution.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
Mixing with compound organic extractant (amine extractant (tri-n-octyl methyl ammonium chloride) is 1:1 with the volume ratio of Neutral-neutral Extractants (tributyl phosphate)) containing vanadic acid immersion liquid of concentration of hydrochloric acid 2.5mol/L is extracted, compound organic extractant and the concentrated hydrochloric acid liquor capacity containing vanadium are than being 3:1, use 260# solvent oil as thinner, the organic extractant concentration of compound is 10%, extraction time is 15min, extraction temperature is 15 DEG C, phase-splitting after leaving standstill; The organic phase of load vanadium mixes with reverse-extraction agent 1.0mol/L hydrochloric acid soln carries out back extraction, and the organic phase of load vanadium and reverse-extraction agent volume ratio are 10:1, and Stripping times is 30min, and back extraction temperature is 15 DEG C, and after leaving standstill, phase-splitting obtains upper organic phase and strip liquor; Strip liquor through pH value be 0.5, temperature 60 C, time 4h precipitate, calcine through temperature 400 DEG C, time 4h, obtain Vanadium Pentoxide in FLAKES product.The upper organic phase obtained after back extraction can as extraction agent for extraction, recycle.In this technique, the one-level percentage extraction of vanadium is 52%, and the one-level back extraction ratio of vanadium is 92%.
Embodiment 2
Mixing with compound organic extractant (amine extractant (tri-n-octyl methyl ammonium chloride) is 1:8 with the volume ratio of Neutral-neutral Extractants (trioctyl-phosphine oxide)) containing vanadic acid immersion liquid of concentration of hydrochloric acid 4.5mol/L is extracted, compound organic extractant and the concentrated hydrochloric acid liquor capacity containing vanadium are than being 1:10, use sulfonated kerosene as thinner, the organic extractant concentration of compound is 70%, extraction time is 0.1min, extraction temperature is 65 DEG C, phase-splitting after leaving standstill; The organic phase of load vanadium mixes with reverse-extraction agent 1.0mol/L sulphuric acid soln carries out back extraction, and the organic phase of load vanadium and reverse-extraction agent volume ratio are 1:5, and Stripping times is 0.2min, and back extraction temperature is 65 DEG C, and after leaving standstill, phase-splitting obtains upper organic phase and strip liquor; Strip liquor through pH value be 3.5, temperature 110 DEG C, time 0.2h precipitate, calcine through temperature 700 DEG C, time 0.2h, obtain Vanadium Pentoxide in FLAKES product.The upper organic phase obtained after back extraction can as extraction agent for extraction, recycle.In this technique, the one-level percentage extraction of vanadium is 63%, and the one-level back extraction ratio of vanadium is 76%.
Embodiment 3
Mixing with compound organic extractant (amine extractant (tri-n-octyl methyl ammonium chloride) is 3:7 with the volume ratio of Neutral-neutral Extractants (trioctyl-phosphine oxide and tributyl phosphate mix by 1:1)) containing vanadic acid immersion liquid of concentration of hydrochloric acid 2.5mol/L is extracted, compound organic extractant and the concentrated hydrochloric acid liquor capacity containing vanadium are than being 2:1, use sulfonated kerosene as thinner, the organic extractant concentration of compound is 50%, extraction time is 15min, extraction temperature is 30 DEG C, phase-splitting after leaving standstill; The organic phase of load vanadium mixes with reverse-extraction agent 0.5mol/L ammonia soln carries out back extraction, and the organic phase of load vanadium and reverse-extraction agent volume ratio are 1:1, and Stripping times is 10min, and back extraction temperature is 20 DEG C, and after leaving standstill, phase-splitting obtains upper organic phase and strip liquor; Strip liquor through pH value be 2.1, temperature 105 DEG C, time 2h precipitate, calcine through temperature 500 DEG C, time 4h, obtain Vanadium Pentoxide in FLAKES product.The upper organic phase obtained after back extraction can as extraction agent for extraction, recycle.In this technique, the one-level percentage extraction of vanadium is 50%, and the one-level back extraction ratio of vanadium is 85%.
Embodiment 4
Mixing with compound organic extractant (amine extractant (tri-n-octyl methyl ammonium chloride) is 3:7 with the volume ratio of Neutral-neutral Extractants (Cyanex923 and tributyl phosphate mix by 1:2)) containing vanadic acid immersion liquid of concentration of hydrochloric acid 4.5mol/L is extracted, compound organic extractant and the concentrated hydrochloric acid liquor capacity containing vanadium are than being 1:3, use sulfonated kerosene as thinner, the organic extractant concentration of compound is 10%, extraction time is 15min, extraction temperature is 40 DEG C, phase-splitting after leaving standstill; The organic phase of load vanadium mixes with reverse-extraction agent hydrochloric acid soln carries out back extraction, and the organic phase of load vanadium and reverse-extraction agent volume ratio are 1:1, and Stripping times is 30min, and back extraction temperature is 20 DEG C, and after leaving standstill, phase-splitting obtains upper organic phase and strip liquor; Strip liquor through pH value be 2.1, temperature 105 DEG C, time 3h precipitate, calcine through temperature 400 DEG C, time 2.5h, obtain Vanadium Pentoxide in FLAKES product.The upper organic phase obtained after back extraction can as extraction agent for extraction, recycle.In this technique, the one-level percentage extraction of vanadium is 52%, and the one-level back extraction ratio of vanadium is 81%.
Embodiment 5
Mixing with compound organic extractant (amine extractant (tri-n-octyl methyl ammonium chloride) is 4:6 with the volume ratio of Neutral-neutral Extractants (tributyl phosphate)) containing vanadic acid immersion liquid of concentration of hydrochloric acid 3.8mol/L is extracted, compound organic extractant and the concentrated hydrochloric acid liquor capacity containing vanadium are than being 3:1, use 260# solvent oil as thinner, the organic extractant concentration of compound is 20%, extraction time is 15min, extraction temperature is 20 DEG C, phase-splitting after leaving standstill; The organic phase of load vanadium mixes with reverse-extraction agent 0.2mol/L sodium chloride solution carries out back extraction, and the organic phase of load vanadium and reverse-extraction agent volume ratio are 2:1, and Stripping times is 30min, and back extraction temperature is 20 DEG C, and after leaving standstill, phase-splitting obtains upper organic phase and strip liquor; Strip liquor through pH value be 1.9, temperature 100 DEG C, time 3h precipitate, calcine through temperature 400 DEG C, time 4h, obtain Vanadium Pentoxide in FLAKES product.The upper organic phase obtained after back extraction can as extraction agent for extraction, recycle.In this technique, the one-level percentage extraction of vanadium is 56%, and the one-level back extraction ratio of vanadium is 68%.
Embodiment 6
Mixing with compound organic extractant (amine extractant (N235) is 3:7 with the volume ratio of Neutral-neutral Extractants (Cyanex923)) containing vanadic acid immersion liquid of concentration of hydrochloric acid 3.3mol/L is extracted, compound organic extractant and the concentrated hydrochloric acid liquor capacity containing vanadium are than being 1:1, use 260# solvent oil as thinner, the organic extractant concentration of compound is 20%, extraction time is 15min, extraction temperature is 35 DEG C, phase-splitting after leaving standstill; The organic phase of load vanadium mixes with reverse-extraction agent 0.2mol/L sodium chloride solution carries out back extraction, and the organic phase of load vanadium and reverse-extraction agent volume ratio are 1:1, and Stripping times is 30min, and back extraction temperature is 20 DEG C, and after leaving standstill, phase-splitting obtains upper organic phase and strip liquor; Strip liquor through pH value be 1.9, temperature 100 DEG C, time 3h precipitate, calcine through temperature 400 DEG C, time 4h, obtain Vanadium Pentoxide in FLAKES product.The upper organic phase obtained after back extraction can as extraction agent for extraction, and recycle mixes with reverse-extraction agent 1.0mol/L sodium chloride solution, regenerates after back extraction process, and upper organic phase and reverse-extraction agent volume ratio are 1:1.In this technique, the one-level percentage extraction of vanadium is 40%, and the one-level back extraction ratio of vanadium is 78%.
Embodiment 7
Mixing with compound organic extractant (amine extractant (N235) is 4:6 with the volume ratio of Neutral-neutral Extractants (Cyanex923 mixes by 1:1 with trioctyl-phosphine oxide)) containing vanadic acid immersion liquid of concentration of hydrochloric acid 4.1mol/L is extracted, compound organic extractant and the concentrated hydrochloric acid liquor capacity containing vanadium are than being 1:1, use 260# solvent oil as thinner, the organic extractant concentration of compound is 20%, extraction time is 10min, extraction temperature is 25 DEG C, phase-splitting after leaving standstill; The organic phase of load vanadium mixes with reverse-extraction agent water carries out back extraction, and the organic phase of load vanadium and reverse-extraction agent volume ratio are 3:1, and Stripping times is 30min, and back extraction temperature is 25 DEG C, and after leaving standstill, phase-splitting obtains upper organic phase and strip liquor; Strip liquor through pH value be 2.1, temperature 110 DEG C, time 3h precipitate, calcine through temperature 600 DEG C, time 4h, obtain Vanadium Pentoxide in FLAKES product.The upper organic phase obtained after back extraction can as extraction agent for extraction, recycle.In this technique, the one-level percentage extraction of vanadium is 53%, and the one-level back extraction ratio of vanadium is 63%.
Embodiment 8
Mixing with compound organic extractant (amine extractant (tri-n-octyl methyl ammonium chloride) is 1:1 with the volume ratio of Neutral-neutral Extractants (Cyanex923)) containing vanadic acid immersion liquid of concentration of hydrochloric acid 2.9mol/L is extracted, compound organic extractant and the concentrated hydrochloric acid liquor capacity containing vanadium are than being 2:1, use 260# solvent oil as thinner, the organic extractant concentration of compound is 20%, extraction time is 5min, extraction temperature is 20 DEG C, phase-splitting after leaving standstill; The organic phase of load vanadium mixes with reverse-extraction agent 0.2mol/L sodium chloride solution carries out back extraction, and the organic phase of load vanadium and reverse-extraction agent volume ratio are 3:1, and Stripping times is 10min, and back extraction temperature is 20 DEG C, and after leaving standstill, phase-splitting obtains upper organic phase and strip liquor; Strip liquor through pH value be 1.7, temperature 110 DEG C, time 3h precipitate, calcine through temperature 450 DEG C, time 4h, obtain Vanadium Pentoxide in FLAKES product.The upper organic phase obtained after back extraction can as extraction agent for extraction, recycle.In this technique, the one-level percentage extraction of vanadium is 40%, and the one-level back extraction ratio of vanadium is 62%.
Embodiment 9
Mixing with compound organic extractant (amine extractant (tri-n-octyl methyl ammonium chloride) is 4:6 with the volume ratio of Neutral-neutral Extractants (trioctyl-phosphine oxide)) containing vanadic acid immersion liquid of concentration of hydrochloric acid 3.7mol/L is extracted, compound organic extractant and the concentrated hydrochloric acid liquor capacity containing vanadium are than being 2:1, use sulfonated kerosene as thinner, the organic extractant concentration of compound is 50%, extraction time is 10min, extraction temperature is 25 DEG C, phase-splitting after leaving standstill; The organic phase of load vanadium mixes with reverse-extraction agent 0.2mol/L sodium chloride solution carries out back extraction, and the organic phase of load vanadium and reverse-extraction agent volume ratio are 1:2, and Stripping times is 10min, and back extraction temperature is 25 DEG C, and after leaving standstill, phase-splitting obtains upper organic phase and strip liquor; Strip liquor through pH value be 1.8, temperature 110 DEG C, time 3h precipitate, calcine through temperature 600 DEG C, time 4h, obtain Vanadium Pentoxide in FLAKES product.The upper organic phase obtained after back extraction can as extraction agent for extraction, recycle.In this technique, the one-level percentage extraction of vanadium is 66%, and the one-level back extraction ratio of vanadium is 85%.
Certainly; the present invention can also have various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art can openly make various corresponding change and modification according to of the present invention, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the present invention.
Claims (10)
1., from containing the method extracting vanadium vanadium high salt concentration acid solution, comprise the following steps:
(1) by amine extractant and Neutral-neutral Extractants mixing, obtain mixing organic extractant; The volume ratio of described amine extractant and Neutral-neutral Extractants is 1:1 ~ 1:8;
(2) mixing organic extractant step (1) obtained and carry out hybrid extraction containing vanadium high salt concentration acid solution, phase-splitting after leaving standstill; Described mixing organic extractant is 3:1 ~ 1:10 with containing vanadium concentrated hydrochloric acid liquor capacity ratio;
(3) organic phase of load vanadium step (2) obtained carries out mixing back extraction with reverse-extraction agent, phase-splitting after leaving standstill, and obtains upper organic phase and strip liquor; The organic phase of described load vanadium and reverse-extraction agent volume ratio are 10:1 ~ 1:5;
(4) strip liquor step (3) obtained, after precipitation, calcining, obtains Vanadium Pentoxide in FLAKES product.
2. the method extracting vanadium from high salt concentration acid solution according to claim 1, is characterized in that, the amine extractant described in step (1) is tri-n-octyl methyl ammonium chloride or trialkylamine; Described Neutral-neutral Extractants is one or more the combination in Cyanex923, trioctyl-phosphine oxide and tributyl phosphate.
3. according to claim 1 and 2ly it is characterized in that from containing the method extracting vanadium vanadium high salt concentration acid solution, described in step (2) is 2.5 ~ 4.5mol/L containing concentration of hydrochloric acid in vanadium high salt concentration acid solution.
4. arbitrary described from containing the method extracting vanadium vanadium high salt concentration acid solution according to claim 1-3, it is characterized in that, in extraction process described in step (2), thinner is used to dissolve mixing organic extractant, the volumetric concentration of the mixing organic extractant after dissolving in solution is 10% ~ 70%, extraction time is 0.1 ~ 15min, and extraction temperature is 15 ~ 65 DEG C.
5. according to claim 4 from containing the method extracting vanadium vanadium high salt concentration acid solution, described thinner is sulfonated kerosene or 260# solvent oil.
6. according to claim 1ly to it is characterized in that from containing the method extracting vanadium vanadium high salt concentration acid solution, by the upper organic phase that step (3) obtains, return step (2) and be used for extraction as extraction agent.
7. according to claim 1 from containing the method extracting vanadium vanadium high salt concentration acid solution, it is characterized in that, the reverse-extraction agent described in step (3) is one or more the combination in sulphuric acid soln, hydrochloric acid soln, sodium chloride solution, ammonia soln and water.
8. according to claim 1 from containing the method extracting vanadium vanadium high salt concentration acid solution, it is characterized in that, in the stripping process described in step (3), Stripping times is 0.2 ~ 30min, and back extraction temperature is 15 ~ 65 DEG C.
9. according to claim 1 from containing the method extracting vanadium vanadium high salt concentration acid solution, it is characterized in that, the precipitation pH value described in step (4) is 0.5 ~ 3.5, and precipitation temperature is 60 ~ 110 DEG C, and sedimentation time is 0.2 ~ 4h.
10. according to claim 1 or 9 from containing the method extracting vanadium vanadium high salt concentration acid solution, it is characterized in that, the calcining temperature described in step (4) is 400 ~ 700 DEG C, and calcination time is 0.2 ~ 4h.
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| CN105907964A (en) * | 2016-04-28 | 2016-08-31 | 河南理工大学 | Method for separating vanadium, scandium and iron in acid solution |
| CN106048261A (en) * | 2016-08-22 | 2016-10-26 | 东北大学 | Method for extracting vanadium from acidic solution by using ionic liquid [OMIM]BF4 |
| CN106315731A (en) * | 2016-09-13 | 2017-01-11 | 苏州湛清环保科技有限公司 | Method for producing nickel oxide from nickel-plating wastewater |
| CN108728673A (en) * | 2018-06-28 | 2018-11-02 | 武汉科技大学 | A kind of acid more methods of the impurity containing vanadium in vanadium leachate of purification enrichment |
| CN108950249A (en) * | 2018-07-16 | 2018-12-07 | 武汉科技大学 | A kind of vanadium aluminum separation method of vanadium-containing shale pickle liquor |
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| CN110172576A (en) * | 2019-03-27 | 2019-08-27 | 杨秋良 | The recovery method of vanadium in a kind of hydrochloric acid system |
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| CN111057876A (en) * | 2019-11-30 | 2020-04-24 | 重庆大学 | Method for preparing high-purity vanadium pentoxide by microemulsion extraction |
| CN112575207A (en) * | 2020-12-04 | 2021-03-30 | 攀钢集团研究院有限公司 | Method for preparing vanadium oxide by low-concentration acidic vanadium liquid extraction |
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| CN106048261A (en) * | 2016-08-22 | 2016-10-26 | 东北大学 | Method for extracting vanadium from acidic solution by using ionic liquid [OMIM]BF4 |
| CN106315731A (en) * | 2016-09-13 | 2017-01-11 | 苏州湛清环保科技有限公司 | Method for producing nickel oxide from nickel-plating wastewater |
| CN108728673A (en) * | 2018-06-28 | 2018-11-02 | 武汉科技大学 | A kind of acid more methods of the impurity containing vanadium in vanadium leachate of purification enrichment |
| CN108950249A (en) * | 2018-07-16 | 2018-12-07 | 武汉科技大学 | A kind of vanadium aluminum separation method of vanadium-containing shale pickle liquor |
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| CN110172576A (en) * | 2019-03-27 | 2019-08-27 | 杨秋良 | The recovery method of vanadium in a kind of hydrochloric acid system |
| CN111057875A (en) * | 2019-11-30 | 2020-04-24 | 重庆大学 | Method for separating vanadium and chromium from solution by using microemulsion |
| CN111057876A (en) * | 2019-11-30 | 2020-04-24 | 重庆大学 | Method for preparing high-purity vanadium pentoxide by microemulsion extraction |
| CN111057876B (en) * | 2019-11-30 | 2021-09-21 | 重庆大学 | Method for preparing high-purity vanadium pentoxide by microemulsion extraction |
| CN111057875B (en) * | 2019-11-30 | 2021-09-21 | 重庆大学 | Method for separating vanadium and chromium from solution by using microemulsion |
| CN112575207A (en) * | 2020-12-04 | 2021-03-30 | 攀钢集团研究院有限公司 | Method for preparing vanadium oxide by low-concentration acidic vanadium liquid extraction |
| CN115198117A (en) * | 2022-07-25 | 2022-10-18 | 华北理工大学 | Method for extracting and separating vanadium from acidic solution by using bifunctional ionic liquid |
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