CN109593968A - From the method for high calcium vanadium slag Green vanadium extraction - Google Patents
From the method for high calcium vanadium slag Green vanadium extraction Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G31/00—Compounds of vanadium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
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Abstract
The present invention relates to the methods from high calcium vanadium slag Green vanadium extraction, belong to vanadium extraction chemical technology field.Present invention solves the technical problem that be high calcium vanadium slag sodium roasting vanadium-extracting vanadium the rate of recovery it is not high.The invention discloses the methods from high calcium vanadium slag Green vanadium extraction, using certain inorganic sodium agent, by the activating pretreatment to raw material, then the step of through pelletizing, leaching, hydrolysis precipitation, the vanadium in high calcium vanadium slag is efficiently extracted.Then the present invention can be added sulfuric acid and obtain sodium bisulfate and recycled to waste water evaporative crystallization, non-wastewater discharge is environmentally protective, and simple process is easy-to-use, wide adaptation range, at low cost, have very high Social benefit and economic benefit.
Description
Technical field
The invention belongs to vanadium extraction chemical technology fields, and in particular to from the method from high calcium vanadium slag Green vanadium extraction.
Background technique
The reserves of China's vanadium occupy the 4th, the world, and national You10Duo Ge provinces and cities (area) have vanadium mineral resource, but main collection
In, explored vanadium quite abundant in Sichuan area and Chengde area, especially the vanadium reserves of Panzhihua Region
Nearly 10,000,000,000 tons of titanomagnetite reserves, vanadic anhydride reserves are 15,780,000 tons, account for about the 55% of national reserves, world saving
11%.When carrying out vanadium extraction by converter blowing, when by vanadium enrichment into vanadium slag, the side for the mainly sodium roasting vanadium-extracting being widely used at present
Method, reduces the bonding phenomenon of material in roasting process, and the residue after vanadium extraction to be added during mixing, though in this way
So reduce the bonding of material, but sacrifices the rate of recovery of vanadium, and also have part mixing unequal during roasting
The phenomenon that causing roasting to bond.
The granularity point for climbing vanadium slag used in steel production vanadium oxide is described in " influence of the granularity to vanadium slag roasting conversion rate "
The chemical component of cloth and different grain size vanadium slag has studied vanadium slag granularity to the affecting laws of vanadium conversion ratio, optimizes vanadium oxide
Production technology.It is 80~160 mesh in vanadium slag granularity, vanadium slag: the ratio between tailings is 10:6, and alkali ratio roasts clinker under conditions of being 1.4
Vanadium, conversion ratio reach 86%.
A kind of new vanadium slag is provided in patent document CN103898315A " a kind of method of pelletizing vanadium slag roasting "
The method for roasting vanadium extraction, vanadium turns leaching rate and reaches 92% or more, but does not have better processing method for high calcium vanadium slag.
Summary of the invention
Present invention solves the technical problem that be high calcium vanadium slag sodium roasting vanadium-extracting vanadium the rate of recovery it is not high.
Technical proposal that the invention solves the above-mentioned problems is to provide the method from the cleaning vanadium extraction of high calcium vanadium slag Green, including
Following steps:
A. by high calcium vanadium slag and inorganic sodium agent, abundant mechanical activation obtains mixture in the ball mill, wherein inorganic sodium
Agent is sodium bisulfate；
B. binder progress pelletizing is added in above-mentioned mixture and obtains wet bulb group, obtains vanadium slag pelletizing through drying and dehydrating；
C. by above-mentioned vanadium slag pelletizing high-temperature roasting, cooling obtains pelletizing clinker rapidly after taking-up；
D. by pelletizing chamotte crushing, water logging is added to go out, obtained containing vanadium leachate；
E. leachate is stood, after settling suspension object, and sulphur acid for adjusting pH is added, is performed under heating conditions hydrolysis precipitation, Gu
The isolated more sodium vanadates of liquid.
Wherein, V in high calcium vanadium slag described in step a2O5Content is 2%~20%, and calcium oxide content is 10%~45%,
CaO/V2O5>1。
Wherein, the granularity of high calcium vanadium slag described in step a < 0.125mm, granularity < 0.6mm of inorganic sodium agent.
Wherein, the molar ratio of inorganic sodium agent and calcium oxide in high calcium vanadium slag is 1:1~3:1 in step a.
Wherein, high calcium vanadium slag and inorganic sodium agent 30~100min of ball milling in the ball mill in step a；It is sprayed in mechanical milling process
Enter spray water.
Wherein, the sodium bisulfate that the binder in step b is 5~10%, the amount of penetrating are the 1% of mixture weight
~6%.
Wherein, step b carries out pelletizing in disc balling machine, and the inclination angle of disk is 30~60 °, and revolving speed is 5~20r/
Wet bulb group is made after rolling 4~6min in min；Wet bulb group's compression strength is greater than 20N, and drop strength is greater than 5 times/；Dry abjection
High-intensitive vanadium slag sodium pelletizing is obtained after moisture, the compression strength of pelletizing is greater than 50N after drying, and drop strength is greater than 10 times/.
Wherein, the temperature roasted in step c is 750~950 DEG C；Preferably 800~850 DEG C；The temperature taken out after roasting
Not less than 650 DEG C.
Wherein, the time roasted in step c is 0.5~4h；Preferably 1~2h.
Wherein, 120 meshes are crossed in step d after pelletizing chamotte crushing；The liquid-solid ratio leached in step d is 0.5:1~5:1,
Preferably it is selected as 1:1~2:1；Temperature > 80 DEG C that leaching process control is leached, extraction time are 5~120min.
Wherein, it is 1.5~2.5 that pH is adjusted in step e, and the time for hydrolyzing precipitation is 0.5~2h.
Wherein, the waste water evaporative crystallization collected to step e is added sulfuric acid reaction and obtains sodium bisulfate return step a use.
Beneficial effects of the present invention:
The present invention is using certain inorganic sodium agent, by the activating pretreatment to raw material, then through pelletizing, leaching, hydrolysis
The step of precipitation, efficiently extracts the vanadium in high calcium vanadium slag；Activating pretreatment of the invention, due to using sulfuric acid
Hydrogen sodium not only may make high calcium vanadium slag effectively to be combined with sodium bisulfate as sodium agent, but also sodium bisulfate first can be with oxidation
Calcium, magnesia are combined, and the objects phases such as part calcium sulfate, magnesium sulfate are formed, so that the vanadium ion in particulate exposes, so
Remaining sodium ion and vanadium ion can be combined effectively during high-temperature roasting afterwards, form water-soluble sodium vanadate object phase,
To be conducive to subsequent leaching, precipitation technique；Then the present invention can be added sulfuric acid and obtain sodium bisulfate to waste water evaporative crystallization
It is recycled, non-wastewater discharge is environmentally protective；Present invention process is easy to use, wide adaptation range, at low cost, has very
High Social benefit and economic benefit.
Specific embodiment
Calcium oxide content greatly improves in high calcium vanadium slag, it has been found that if according to existing sodium roasting vanadium-extracting technique,
Vanadium can largely be combined with calcium, form calcium vanadate, and calcium vanadate is practically insoluble in water, causes the leaching rate sharp fall of vanadium.Base
In this, the present invention is creatively proposed by raw material activating pretreatment, while cooperating certain inorganic sodium agent, through making
The step of ball, leaching, hydrolysis precipitation, solve the problems, such as that high calcium vanadium slag vanadium extraction is difficult.
The present invention provides the method from high calcium vanadium slag Green vanadium extraction, comprising the following steps:
A. by high calcium vanadium slag and inorganic sodium agent, abundant mechanical activation obtains mixture in the ball mill, wherein inorganic sodium
Agent is sodium bisulfate；
B. binder progress pelletizing is added in above-mentioned mixture and obtains wet bulb group, obtains vanadium slag pelletizing through drying and dehydrating；
C. by above-mentioned vanadium slag pelletizing high-temperature roasting, cooling obtains pelletizing clinker rapidly after taking-up；
D. by pelletizing chamotte crushing, water logging is added to go out, obtained containing vanadium leachate；
E. leachate is stood, after settling suspension object, and sulphur acid for adjusting pH is added, is performed under heating conditions hydrolysis precipitation, Gu
The isolated more sodium vanadates of liquid.
Present invention employs the pretreating process of ball milling activation, may make high calcium vanadium slag effectively to be combined with sodium bisulfate, no
It will form local reunion, cause the waste of resource；Secondly in ball milling activation and subsequent process, sodium bisulfate first can be with
Calcium oxide, magnesia are combined, and the objects phases such as part calcium sulfate, magnesium sulfate are formed, so that the vanadium ion in particulate exposes
Come, then remaining sodium ion and vanadium ion can be combined effectively during high-temperature roasting, form water-soluble sodium vanadate
Object phase.
Pellet forming process of the invention by high calcium vanadium slag with sodium bisulfate is even closer is combined in one piece, also avoid powder
In high-temperature roasting material bonding, concentrate the problem of heat release.
Wherein, V in high calcium vanadium slag described in step a2O5Content is 2%~20%, and calcium oxide content is 10%~45%,
CaO/V2O5>1。
Wherein, the granularity of high calcium vanadium slag described in step a < 0.125mm, granularity < 0.6mm of inorganic sodium agent.
Wherein, the molar ratio of inorganic sodium agent and calcium oxide in high calcium vanadium slag is 1:1~3:1 in step a.
Wherein, high calcium vanadium slag and inorganic sodium agent 30~100min of ball milling in the ball mill in step a；It is sprayed in mechanical milling process
Enter spray water.
Wherein, the sodium bisulfate that the binder in step b is 5~10%, the amount of penetrating are the 1% of mixture weight
~6%.
Wherein, step b carries out pelletizing in disc balling machine, and the inclination angle of disk is 30~60 °, and revolving speed is 5~20r/
Wet bulb group is made after rolling 4~6min in min；Wet bulb group's compression strength is greater than 20N, and drop strength is greater than 5 times/；Dry abjection
High-intensitive vanadium slag sodium pelletizing is obtained after moisture, the compression strength of pelletizing is greater than 50N after drying, and drop strength is greater than 10 times/.
By the control of above-mentioned pellet forming process, on the one hand can by high calcium vanadium slag with sodium bisulfate is even closer is combined in one piece, also keep away
Exempted from powder high-temperature roasting material bonding, concentrate heat release the problem of, the compression strength of another aspect pelletizing is small, and pelletizing is in heap
During depositing, beneath pelletizing will be crushed；Drop strength is in order to guarantee pelletizing during transportation, after pelletizing falls
It will not destroy, crush.
Wherein, the temperature roasted in step c is 750~950 DEG C；Preferably 800~850 DEG C；The temperature taken out after roasting
Not less than 650 DEG C.
Wherein, the time roasted in step c is 0.5~4h；Preferably 1~2h.
Wherein, 120 meshes are crossed in step d after pelletizing chamotte crushing；The liquid-solid ratio leached in step d is 0.5:1~5:1,
Preferably it is selected as 1:1~2:1；Temperature > 80 DEG C that leaching process control is leached, extraction time are 5~120min.
Wherein, it is 1.5~2.5 that pH is adjusted in step e, and the time for hydrolyzing precipitation is 0.5~2h.
Wherein, the waste water evaporative crystallization collected to step e is added sulfuric acid reaction and obtains sodium bisulfate return step a use.
It is generated during sodium sulphate hydrolysis precipitation, obtains sodium sulphate, sodium sulphate and effect of sulfuric acid after waste water crystallization, can be generated
Sodium bisulfate return step a is utilized.
The following further explains the present invention by way of examples.
The chemical component and its content for the high calcium vanadium slag used in embodiment are as shown in table 1.
Table 1
Embodiment 1
A. it takes 1000g converter high calcium vanadium slag and 240g anhydrous slufuric acid hydrogen sodium to carry out ball milling 30min in the ball mill, sprays into
62g water continues ball milling 30min, obtains aqueous 5% wetting mixture；
B. wet feed is added in disc balling machine, sprays into 6% sodium bisulfate cloudy solution 60g, control disc balling machine
After angle is 30 °, revolving speed 20r/min, pelletizing 4min, the compression strength for obtaining wet bulb group is 20N, the drop strength of wet bulb group
For 5 times/, in 100 DEG C of dry 10h, it is dry after the compression strength of pelletizing be 50N, it is dry after pelletizing drop strength be 10 times/
It is a；
C. by wet bulb group it is dry after, be placed in Muffle furnace high-temperature roasting, temperature is 950 DEG C, calcining time 2h, and when roasting is logical
Enter air, at 650 DEG C, takes out pelletizing clinker, be crushed 120 meshes；
D. the pelletizing clinker under 120 meshes is mixed with water, control extraction temperature is 85 DEG C, and extraction time 30min is obtained
1300ml containing vanadium leachate, V2O5For 118.69g/L, vanadic anhydride 1% is contained in slag；
E. sulfuric acid adjusts leachate pH to 2.0, hydrolyzes precipitation 2h, and the concentration of upper liquid vanadic anhydride is 0.6g/L, is obtained
To more sodium vanadate 190.40g, wherein TV content is 45.0%.
Embodiment 2
A. it takes 1000g converter high calcium vanadium slag and 120g anhydrous slufuric acid hydrogen sodium to carry out ball milling 30min in the ball mill, sprays into
40g water continues ball milling 30min, obtains aqueous 3.5% wetting mixture；
B. moistening material is added in disc balling machine, sprays into 6% sodium bisulfate cloudy solution 60g, control disk pelletizing
After machine angle is 30 °, revolving speed 20r/min, pelletizing 4min, the compression strength for obtaining wet bulb group is 19N, and falling for wet bulb group is strong
Degree is 4.5 times/, and the compression strength of pelletizing is 50N after 200 DEG C of dry 2h, drying, and the drop strength of pelletizing is 10 after drying
Secondary/；
C. by wet bulb group it is dry after, be placed in Muffle furnace high-temperature roasting, temperature is 850 DEG C, calcining time 2h, and when roasting is logical
Enter oxygen, at 650 DEG C, takes out pelletizing clinker, be crushed 120 meshes；
D. the pelletizing clinker under 120 meshes is mixed with water, control extraction temperature is 95 DEG C, and extraction time 120min is obtained
To 1200ml containing vanadium leachate, contains TV126.42g/L, contain vanadic anhydride 1.5% in residue；
E. leachate pH to 2.5 being adjusted with sulfuric acid, hydrolyzes precipitation 1h, the concentration of upper liquid vanadic anhydride is 0.42g/L,
More sodium vanadate 182.08g are obtained, wherein TV content is 46.5%.
Embodiment 3
A. it takes 1000g converter high calcium vanadium slag and 360g anhydrous slufuric acid hydrogen sodium to carry out ball milling 30min in the ball mill, sprays into
40g water continues ball milling 30min, obtains aqueous 3.5% wetting mixture；
B. moistening material is added in disc balling machine, sprays into 6% sodium bisulfate cloudy solution 60g, control disk pelletizing
After machine angle is 30 °, revolving speed 20r/min, pelletizing 4min, the compression strength for obtaining wet bulb group is 25N, and falling for wet bulb group is strong
Degree is 6 times/, and the compression strength of pelletizing is 60N after 300 DEG C of dry 1h, drying, and the drop strength of pelletizing is 12 after drying
Secondary/；
C. by wet bulb group it is dry after, be placed in Muffle furnace high-temperature roasting, temperature is 880 DEG C, calcining time 2h, and when roasting is logical
Enter air, at 650 DEG C, takes out pelletizing clinker, be crushed 120 meshes；
D. the pelletizing clinker under 120 meshes is mixed with water, control extraction temperature is 95 DEG C, and extraction time 120min is obtained
To 1500ml containing vanadium leachate, contains TV107.13g/L, contain vanadic anhydride 0.8% in residue；
E. leachate pH to 2.5 being adjusted with sulfuric acid, hydrolyzes precipitation 1h, the concentration of upper liquid vanadic anhydride is 0.13g/L,
More sodium vanadate 197.54g are obtained, wherein TV content is 45.5%.
The above described is only a preferred embodiment of the present invention, limitation in any form not is done to the present invention, it is all
It is technical spirit according to the present invention any simple modification, equivalent change and modification made to the above embodiment, still falls within
In the range of technical solution of the present invention.
Claims (12)
1. from the method for high calcium vanadium slag Green vanadium extraction, it is characterised in that include the following steps:
A. by high calcium vanadium slag and inorganic sodium agent, sufficiently activation obtains mixture in the ball mill, wherein inorganic sodium agent is sulfuric acid
Hydrogen sodium；
B. binder progress pelletizing is added in above-mentioned mixture and obtains wet bulb group, obtains vanadium slag pelletizing through drying and dehydrating；
C. by above-mentioned vanadium slag pelletizing high-temperature roasting, cooling obtains pelletizing clinker rapidly after taking-up；
D. by pelletizing chamotte crushing, water logging is added to go out, obtained containing vanadium leachate；
E. leachate is stood, after settling suspension object, and sulphur acid for adjusting pH is added, and is performed under heating conditions hydrolysis precipitation, solid-liquid point
From obtaining more sodium vanadates.
2. the method according to claim 1 from high calcium vanadium slag Green vanadium extraction, it is characterised in that: height described in step a
V in calcium vanadium slag2O5Mass percentage is 2%~20%, and calcium oxide mass percentage is 10%~45%, CaO/V2O5>1。
3. according to claim 1 or 2 described in any item methods from high calcium vanadium slag Green vanadium extraction, it is characterised in that: step a
Described in high calcium vanadium slag granularity < 0.125mm, granularity < 0.6mm of inorganic sodium agent.
4. described in any item methods from high calcium vanadium slag Green vanadium extraction according to claim 1~3, it is characterised in that: step a
In in inorganic sodium agent and high calcium vanadium slag the molar ratio of calcium oxide be 1:1~3:1.
5. the method according to any one of claims 1 to 4 from high calcium vanadium slag Green vanadium extraction, it is characterised in that: step a
Middle high calcium vanadium slag and inorganic sodium agent 30~100min of ball milling in the ball mill；Spray water is sprayed into mechanical milling process.
6. a kind of described in any item methods from the cleaning vanadium extraction of high calcium vanadium slag Green, feature exist according to claim 1~5
In: the sodium bisulfate that the binder in step b is 5~10%, the amount of penetrating are the 1%~6% of mixture weight.
7. a kind of described in any item methods from the cleaning vanadium extraction of high calcium vanadium slag Green, feature exist according to claim 1~6
Pelletizing is carried out in disc balling machine in: step b, the inclination angle of disk is 30~60 °, and revolving speed is 5~20r/min, roll 4~
Wet bulb group is made after 6min；Wet bulb group's compression strength is greater than 20N, and drop strength is greater than 5 times/；It is obtained after dry abjection moisture
High-intensitive vanadium slag sodium pelletizing, the compression strength of pelletizing is greater than 50N after drying, and drop strength is greater than 10 times/.
8. a kind of described in any item methods from the cleaning vanadium extraction of high calcium vanadium slag Green, feature exist according to claim 1~7
In: the temperature roasted in step c is 750~950 DEG C；Preferably 800~850 DEG C；The temperature taken out after roasting is not less than 650
℃。
9. a kind of described in any item methods from the cleaning vanadium extraction of high calcium vanadium slag Green, feature exist according to claim 1~8
In: the time roasted in step c is 0.5~4h；Preferably 1~2h.
10. a kind of described in any item methods from the cleaning vanadium extraction of high calcium vanadium slag Green according to claim 1~9, feature
It is: crosses 120 meshes in step d after pelletizing chamotte crushing；The liquid-solid ratio leached in step d is 0.5:1~5:1, is preferably selected
For 1:1~2:1；Leaching process controls extraction temperature > 80 DEG C, and extraction time is 5~120min.
11. a kind of described in any item methods from the cleaning vanadium extraction of high calcium vanadium slag Green according to claim 1~10, feature
Be: it is 1.5~2.5 that pH is adjusted in step e, and the time for hydrolyzing precipitation is 0.5~2h.
12. a kind of described in any item methods from the cleaning vanadium extraction of high calcium vanadium slag Green according to claim 1~11, feature
Be: the waste water evaporative crystallization collected to step e is added sulfuric acid reaction and obtains sodium bisulfate, and return step a is used.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110343856A (en) * | 2019-08-20 | 2019-10-18 | 攀钢集团攀枝花钢铁研究院有限公司 | The method of sodium-ionized vanadium extraction |
| CN113913620A (en) * | 2021-10-12 | 2022-01-11 | 攀钢集团钒钛资源股份有限公司 | Method for extracting vanadium from vanadium slag through sodium modification |
| CN115305362A (en) * | 2022-07-18 | 2022-11-08 | 承德燕北冶金材料有限公司 | Method for removing alkali metal by reducing and volatilizing vanadium extraction tailings |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105331822A (en) * | 2015-11-26 | 2016-02-17 | 河北钢铁股份有限公司承德分公司 | Method for recycling vanadium in waste containing vanadium |
-
2019
- 2019-02-15 CN CN201910116913.2A patent/CN109593968A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105331822A (en) * | 2015-11-26 | 2016-02-17 | 河北钢铁股份有限公司承德分公司 | Method for recycling vanadium in waste containing vanadium |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110343856A (en) * | 2019-08-20 | 2019-10-18 | 攀钢集团攀枝花钢铁研究院有限公司 | The method of sodium-ionized vanadium extraction |
| CN110343856B (en) * | 2019-08-20 | 2021-01-26 | 攀钢集团攀枝花钢铁研究院有限公司 | Efficient sodium treatment vanadium extraction method |
| CN113913620A (en) * | 2021-10-12 | 2022-01-11 | 攀钢集团钒钛资源股份有限公司 | Method for extracting vanadium from vanadium slag through sodium modification |
| CN115305362A (en) * | 2022-07-18 | 2022-11-08 | 承德燕北冶金材料有限公司 | Method for removing alkali metal by reducing and volatilizing vanadium extraction tailings |
| CN115305362B (en) * | 2022-07-18 | 2023-06-13 | 承德燕北冶金材料有限公司 | Method for removing alkali metal by reducing and volatilizing vanadium extraction tailings |
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