CN110079684A - The method that vanadium chromium mentions altogether in calcium vanadate containing chromium - Google Patents
The method that vanadium chromium mentions altogether in calcium vanadate containing chromium Download PDFInfo
- Publication number
- CN110079684A CN110079684A CN201910406350.0A CN201910406350A CN110079684A CN 110079684 A CN110079684 A CN 110079684A CN 201910406350 A CN201910406350 A CN 201910406350A CN 110079684 A CN110079684 A CN 110079684A
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- CN
- China
- Prior art keywords
- chromium
- vanadium
- calcium vanadate
- containing chromium
- calcium
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Classifications
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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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/12—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions
- C22B3/14—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions containing ammonia or ammonium salts
-
- 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
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
-
- 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
- C22B34/00—Obtaining refractory metals
- C22B34/30—Obtaining chromium, molybdenum or tungsten
- C22B34/32—Obtaining chromium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses the methods that vanadium chromium in a kind of calcium vanadate containing chromium mentions altogether, belong to metallurgical technology field.The present invention is to make up vanadium in calcium vanadate containing chromium, chromium while the technique blank extracted, it provides a kind of method that vanadium chromium proposes altogether in calcium vanadate containing chromium: chromium calcium vanadate will be contained and slurries are mixed to obtain in water, leaching agent is added into slurries, carries out leaching vanadium liquid, reaction terminates, and is separated by solid-liquid separation to obtain vanadium chromium solution；The leaching agent is the mixture of sodium bicarbonate and ammonium hydrogen carbonate.The present invention controls leaching condition, precipitates calcium substantially by screening leaching agent and its dosage, and vanadium, chromium basically form vanadium chromium solution, and vanadium, chromium leaching rate are easy to operate up to 95% or more, at low cost, it is easy to accomplish industrialization.
Description
Technical field
The invention belongs to metallurgical technology fields, and in particular to a method of vanadium chromium mentions altogether in calcium vanadate containing chromium.
Background technique
Vanadium, chromium have important and extensive use in fields such as metallurgy, chemical industry, national defence, the energy as important strategic element
On the way.Since the property of vanadium, chromium is closely similar, often preservation passes through physical means in the mineral of nature in the form of symbiosis
It can not be efficiently separated.The red lattice Nan Kuang of Panzhihua is vanadium ferrochrome associated minerals, and vanadium chromium content is high, vanadium grade and Panzhihua other
Raw ore taste in mining area is close, but chromium grade is 8 to 10 times of chromium in other Panzhihua mining areas, reasonably and environmentally friendlylyly
Develop red lattice south ore resources, it is necessary and first have to solve is exactly the problem of vanadium chromium separates.By long-term technological accumulation, at present
Vanadium and chromium are mainly leached into solution by the research of vanadium chromium separation jointly, then vanadium chromium is further processed.Calcium salt
Precipitation is to recycle a kind of method of Vanadium Concentrationin from vanadium liquid with precipitating reagents such as milk of limes, and a kind of processing vanadium chromium solution at present
Means, but what is obtained is calcium vanadate containing chromium, cannot be directly used to prepare vanadium oxide product, is needed further in calcium vanadate containing chromium
Vanadium chromium extract obtain vanadium chromium solution, with further progress vanadium chromium separation.
CN107964601 discloses a kind of method for reducing chromium content in calcium vanadate, mainly to a small amount of in calcium vanadate
Chromium is extracted, and most of vanadium chromium is not leached in solution, and using single leaching agent, can not achieve vanadium chromium
It mentions altogether.
It has not yet to see and other reports that vanadium chromium mentions altogether is carried out to calcium vanadate containing chromium.
Summary of the invention
The method that vanadium chromium mentions altogether in calcium vanadate containing chromium comprising following steps: will contain chromium calcium vanadate and water is mixed
Leaching agent is added into slurries for slurries, carries out leaching vanadium liquid, and reaction terminates, and is separated by solid-liquid separation to obtain vanadium chromium solution；The leaching agent is
The mixture of sodium bicarbonate and ammonium hydrogen carbonate.
Wherein, in the method that vanadium chromium mentions altogether in calcium vanadate containing chromium described above, in the calcium vanadate containing chromium vanadium in terms of TV,
Mass fraction are as follows: 18%~32%；Chromium is in terms of Cr, mass fraction are as follows: 0.4%~4.4%.
Wherein, in the method that vanadium chromium mentions altogether in calcium vanadate containing chromium described above, the solid-liquid of the calcium vanadate containing chromium and water
Mass ratio is 1:4~10.
Preferably, in the method that vanadium chromium mentions altogether in calcium vanadate containing chromium described above, the calcium vanadate containing chromium and water are consolidated
Liquid mass ratio is 1:5~8.
Wherein, in the method that vanadium chromium mentions altogether in calcium vanadate containing chromium described above, sodium bicarbonate and carbon in the leaching agent
The ratio between mole of sour hydrogen ammonium is 1:1~2.
Preferably, in the method that vanadium chromium mentions altogether in calcium vanadate containing chromium described above, in the leaching agent sodium bicarbonate with
The ratio between mole of ammonium hydrogen carbonate is 1:1~1.5.
Wherein, in the method that vanadium chromium mentions altogether in calcium vanadate containing chromium described above, the additional amount of the leaching agent is to leach
CO in agent3 2-With Ca in calcium vanadate containing chromium2+The ratio between mole for subject to 1~1.5:1.
Preferably, in the method that vanadium chromium mentions altogether in calcium vanadate containing chromium described above, the additional amount of the leaching agent is to soak
CO in agent out3 2-With Ca in calcium vanadate containing chromium2+The ratio between mole for subject to 1~1.2:1.
Wherein, in the method that vanadium chromium mentions altogether in calcium vanadate containing chromium described above, the temperature of the Leach reaction is 50~
90℃。
Preferably, in the method that vanadium chromium mentions altogether in calcium vanadate containing chromium described above, the temperature of the Leach reaction is 60
~80 DEG C.
Wherein, in the method that vanadium chromium mentions altogether in calcium vanadate containing chromium described above, the mixing speed of the Leach reaction is
300~600r/min.
Preferably, in the method that vanadium chromium mentions altogether in calcium vanadate containing chromium described above, the mixing speed of the Leach reaction
For 400~500r/min.
Wherein, in the method that vanadium chromium mentions altogether in calcium vanadate containing chromium described above, when being stirred to react of the Leach reaction
Between no less than 0.5h.
Preferably, in the method that vanadium chromium mentions altogether in calcium vanadate containing chromium described above, the Leach reaction is stirred to react
Time is 0.5~1.5h.
Beneficial effects of the present invention:
The present invention using the mixture of sodium bicarbonate and ammonium hydrogen carbonate as leaching agent, in calcium vanadate containing chromium vanadium and chromium it is same
Shi Fanying controls leaching condition, precipitates calcium substantially, it is molten that vanadium, chromium basically form vanadium chromium by screening leaching agent and its dosage
Liquid, vanadium, chromium leaching rate are up to 95% or more, and vanadium chromium solution can be used for subsequent handling, and filter cake is few containing chromium, are easily handled；This hair
Bright method operating condition is simple, and reaction process is not required to adjust pH, and cost is relatively low, it is easy to accomplish industrialization.
Specific embodiment
Specifically, the method that vanadium chromium mentions altogether in calcium vanadate containing chromium, comprising the following steps: chromium calcium vanadate will be contained mixed with water and stirred
Slurries are mixed to obtain, leaching agent is added into slurries, carry out leaching vanadium liquid, reaction terminates, and is separated by solid-liquid separation to obtain vanadium chromium solution；The leaching
Agent is the mixture of sodium bicarbonate and ammonium hydrogen carbonate.
Vanadium is in terms of V in the calcium vanadate containing chromium that the present invention uses, mass fraction are as follows: 18%~32%；Chromium is in terms of Cr, quality point
Number are as follows: 0.4%~4.4%.
In the method for the present invention, the solid-liquid mass ratio of the calcium vanadate containing chromium and water is 1:4~10；Preferably 1:5~8.
For above-mentioned calcium vanadate containing chromium, the present invention has carried out a large amount of trials to leaching agent, with sodium bicarbonate and ammonium hydrogen carbonate
Mixture as leaching agent, sodium bicarbonate can be made to react with chromium ion and generate sodium chromate, ammonium hydrogen carbonate, sodium bicarbonate and vanadium
Ionic reaction generates ammonium metavanadate and sodium vanadate, and in order to make Leaching Systems pH be maintained at certain section, it is unlikely to precipitate vanadium
Get off, while making vanadium and chromium in calcium vanadate containing chromium that can be converted into soluble-salt, improves leaching rate, control carbonic acid in the present invention
The ratio between mole of hydrogen sodium and ammonium hydrogen carbonate is 1:1~2；Preferably, in leaching agent sodium bicarbonate and ammonium hydrogen carbonate mole
The ratio between be 1:1~1.5.
In the method for the present invention, the additional amount of leaching agent is with CO in leaching agent3 2-With Ca in calcium vanadate containing chromium2+Mole it
Subject to for 1~1.5:1, come out with guaranteeing to convert precipitation of calcium carbonate for the calcium almost all in calcium vanadate；If leaching
The additional amount of agent is excessive, it will cause carbonate waste etc. adverse effect, if relatively low, a small amount of calcium can not be precipitated, thus cause vanadium,
Chromium leaching rate reduces.Preferably, the additional amount of leaching agent is with CO in leaching agent3 2-With Ca in calcium vanadate containing chromium2+The ratio between mole
Subject to 1~1.2:1.
In the method for the present invention, the temperature of Leach reaction is 50~90 DEG C；Preferably 60~80 DEG C.
To accelerate leaching efficiency, guarantee vanadium, chromium leaching rate, the mixing speed of Leach reaction is 300~600r/min；It is preferred that
For 400~500r/min.
To come out vanadium, chromium as far as possible, guarantee that reaction is more complete, carry out Leach reaction is stirred to react the time not
Less than 0.5h；Preferably 0.5~1.5h.
In the present invention, the content is mass percentage content, and TV refers to the soluble vanadium element in system.
Below by embodiment, invention is further described in detail, but does not therefore limit the scope of the present invention
Among the embodiment described range.
Embodiment 1
Chromium calcium vanadate 200g (V:20.76%, Ca:35.03%, Cr:0.4%) will be contained, 1600mL water is added, and stir to obtain slurry
Liquid, the mixture that sodium bicarbonate and ammonium hydrogen carbonate are added into slurries is leaching agent, n (NaHCO in leaching agent3): n (NH4HCO3)
=1:1.1, leaching agent additional amount are n (CO3 2-): n (Ca2+)=1.1:1；Then in temperature 60 C, mixing speed 400r/min,
Being stirred to react the time is 60min, and solid-liquor separation obtains leachate and leached mud；Wherein, V content is 0.638%, Cr in leached mud
It is 97.34%, Cr leaching rate is 97.39% that content, which is 0.012%, V leaching rate,.
Embodiment 2
Chromium calcium vanadate 200g (V:20.76%, Ca:35.03%, Cr:0.4%) will be contained, 1400mL water is added, and stir to obtain slurry
Liquid, the mixture that sodium bicarbonate and ammonium hydrogen carbonate are added into slurries is leaching agent, n (NaHCO in leaching agent3): n (NH4HCO3)
=1:1, leaching agent additional amount are n (CO3 2-): n (Ca2+)=1.2:1；Then in temperature 70 C, mixing speed 400r/min is stirred
Mixing the reaction time is 60min, and solid-liquor separation obtains leachate and leached mud；Wherein, V content is that 0.772%, Cr contains in leached mud
It is 96.28%, Cr leaching rate is 96.75% that amount, which is 0.013%, V leaching rate,.
Embodiment 3
Chromium calcium vanadate 200g (V:20.76%, Ca:35.03%, Cr:0.4%) will be contained, 1200mL water is added, and stir to obtain slurry
Liquid, the mixture that sodium bicarbonate and ammonium hydrogen carbonate are added into slurries is leaching agent, n (NaHCO in leaching agent3): n (NH4HCO3)
=1:1.2, leaching agent additional amount are n (CO3 2-): n (Ca2+)=1:1；Then at 80 DEG C of temperature, mixing speed 500r/min is stirred
Mixing the reaction time is 30min, and solid-liquor separation obtains leachate and leached mud；Wherein, V content is that 0.765%, Cr contains in leached mud
It is 96.31%, Cr leaching rate is 97.39% that amount, which is 0.012%, V leaching rate,.
Embodiment 4
Chromium calcium vanadate 200g (V:20.76%, Ca:35.03%, Cr:0.4%) will be contained, 1000mL water is added, and stir to obtain slurry
Liquid, the mixture that sodium bicarbonate and ammonium hydrogen carbonate are added into slurries is leaching agent, n (NaHCO in leaching agent3): n (NH4HCO3)
=1:1.5, leaching agent additional amount are n (CO3 2-): n (Ca2+)=1.1:1；Then in temperature 60 C, mixing speed 400r/min,
Being stirred to react the time is 90min, and solid-liquor separation obtains leachate and leached mud；Wherein, V content is 0.435%, Cr in leached mud
It is 97.90%, Cr leaching rate is 97.25% that content, which is 0.011%, V leaching rate,.
Claims (8)
1. the method that vanadium chromium mentions altogether in calcium vanadate containing chromium, it is characterised in that: mixed the following steps are included: chromium calcium vanadate will be contained with water
Slurries are stirred to obtain, leaching agent is added into slurries, carry out leaching vanadium liquid, reaction terminates, and is separated by solid-liquid separation to obtain vanadium chromium solution；The leaching
Agent is the mixture of sodium bicarbonate and ammonium hydrogen carbonate out.
2. the method that vanadium chromium mentions altogether in calcium vanadate containing chromium according to claim 1, it is characterised in that: the calcium vanadate containing chromium
Middle vanadium is in terms of TV, mass fraction are as follows: 18%~32%；Chromium is in terms of Cr, mass fraction are as follows: 0.4%~4.4%.
3. the method that vanadium chromium mentions altogether in calcium vanadate containing chromium according to claim 1, it is characterised in that: the calcium vanadate containing chromium
Solid-liquid mass ratio with water is 1:4~10；Preferably 1:5~8.
4. the method that vanadium chromium mentions altogether in calcium vanadate containing chromium according to claim 1, it is characterised in that: carbon in the leaching agent
The ratio between mole of sour hydrogen sodium and ammonium hydrogen carbonate is 1:1~2；Preferably 1:1~1.5.
5. the method that vanadium chromium mentions altogether in calcium vanadate containing chromium according to claim 1, it is characterised in that: the leaching agent adds
Enter amount with CO in leaching agent3 2-With Ca in calcium vanadate containing chromium2+The ratio between mole for subject to 1~1.5:1；Preferably 1~1.2:1.
6. the method that vanadium chromium mentions altogether in calcium vanadate containing chromium according to claim 1, it is characterised in that: the Leach reaction
Temperature is 50~90 DEG C；Preferably 60~80 DEG C.
7. the method that vanadium chromium mentions altogether in calcium vanadate containing chromium according to claim 1, it is characterised in that: the Leach reaction
Mixing speed is 300~600r/min；Preferably 400~500r/min.
8. the method that vanadium chromium mentions altogether in described in any item calcium vanadates containing chromium according to claim 1~7, it is characterised in that: described
The time that is stirred to react of Leach reaction is no less than 0.5h；Preferably 0.5~1.5h.
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| CN201910406350.0A CN110079684A (en) | 2019-05-16 | 2019-05-16 | The method that vanadium chromium mentions altogether in calcium vanadate containing chromium |
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| CN201910406350.0A CN110079684A (en) | 2019-05-16 | 2019-05-16 | The method that vanadium chromium mentions altogether in calcium vanadate containing chromium |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104109758A (en) * | 2014-07-21 | 2014-10-22 | 中国科学院过程工程研究所 | Clean process method for extracting vanadium, chromium and iron from vanadium slag step by step |
| CN109182768A (en) * | 2018-10-25 | 2019-01-11 | 攀钢集团攀枝花钢铁研究院有限公司 | The method of vanadium and chromium is separated from vanadium chromium slag |
| CN109338114A (en) * | 2018-10-25 | 2019-02-15 | 攀钢集团攀枝花钢铁研究院有限公司 | A method of separating vanadium and chromium from vanadium chromium slag |
-
2019
- 2019-05-16 CN CN201910406350.0A patent/CN110079684A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104109758A (en) * | 2014-07-21 | 2014-10-22 | 中国科学院过程工程研究所 | Clean process method for extracting vanadium, chromium and iron from vanadium slag step by step |
| CN109182768A (en) * | 2018-10-25 | 2019-01-11 | 攀钢集团攀枝花钢铁研究院有限公司 | The method of vanadium and chromium is separated from vanadium chromium slag |
| CN109338114A (en) * | 2018-10-25 | 2019-02-15 | 攀钢集团攀枝花钢铁研究院有限公司 | A method of separating vanadium and chromium from vanadium chromium slag |
Non-Patent Citations (1)
| Title |
|---|
| 杨保祥等编著: "《钒钛清洁生产》", 31 January 2017, 冶金工业出版社 * |
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