CN100480404C - Method for leaching vanadium from stone-like coal by oxidation transformation - Google Patents
Method for leaching vanadium from stone-like coal by oxidation transformation Download PDFInfo
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- CN100480404C CN100480404C CNB2007100352551A CN200710035255A CN100480404C CN 100480404 C CN100480404 C CN 100480404C CN B2007100352551 A CNB2007100352551 A CN B2007100352551A CN 200710035255 A CN200710035255 A CN 200710035255A CN 100480404 C CN100480404 C CN 100480404C
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- vanadium
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- rock coal
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- 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
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Abstract
A method to lixiviate vanadium by oxidation transformation of rock coal. It contains the following steps: taking rock coal powder as raw material and industrial vitriol of 98% as reagent, the rock coal powder, industrial vitriol of 98% and water will be mixed equably, according the distribution rate 100: 10-50: 1-20, and be piled up keeping out of rain at normal temperature and press for more than 3 days. The complex mineral components such as vanadium in the rock coal mine will be oxidized or reacted with other component to produce some compounds easy to dissolve, it occurs under the condition piled up at normal temperature and normal press and affected by reagent during the oxidation transformation process. The advantage of this process is that the technology of it is simple and the reclaim rate of metal is high, vanadium is easy to separate, the cost of reagent is low, the metal with value is centralized, and machine need is not high, and the invest to build factory is low.
Description
Technical field
The invention belongs to vanadium extractive technique field, be specifically related to a kind of from bone coal the method for oxidative conversion of leached vanadium.
Background technology
At present, be from bone coal, to extract in an industrial important channel that obtains vanadium.Because there is the form more complicated in the bone coal in vanadium, for vanadium minerals complicated and changeable in the bone coal is extracted, on the principles of chemistry, must make insoluble tervalent vanadium, be converted into the vanadium of soluble tetravalence or pentavalent, from the mineral processes emphasis, then must make vanadium minerals complicated and changeable change single mineral into.At present, routine techniques and technology mainly are the methods that adopts with the salt high-temperature roasting, its roasting reaction is on a surface chemical reaction to take place substantially, and because content of vanadium low (about 1%) in the bone coal, the addition of salt is limited, vanadium minerals behavior complexity, this has just fundamentally limited the speed of response and the transformation efficiency of vanadium minerals.The pickling process (referring to No. 200610011042.0 Chinese patent application specification sheets) that works out recently also is to need High Temperature High Pressure in addition, and filter effect is undesirable, and mechanical means requires high, and the fund of founding the factory is big.Thereby, the deficiency that aforesaid method exists is the technical matters complexity, metal recovery rate is low, valuable metal disperses, and reagent consumption is big, is difficult to overcome the complicacy of mineral, make the vanadium in mineral separation difficulty, hypertonia big for environment pollution, otherwise be exactly that mechanical means requires the high fund of founding the factory excessive, that the investor is caused.
Summary of the invention
Task of the present invention is to overcome the deficiencies in the prior art, provides that a kind of technology is simple, metal recovery rate is high, vanadium good separating effect, low cost, the oligosaprobic method of oxidative conversion of leached vanadium from bone coal at normal temperatures and pressures.
Realize that the technical scheme that the object of the invention adopts is: the method for oxidative conversion of leached vanadium may further comprise the steps from bone coal:
With the stone coal powder is raw material, 98% industrial sulphuric acid is a reagent, the industrial sulphuric acid of stone coal powder and 98% and the water proportioning by 100:10～50:1～20 is mixed, hiding rain at normal temperatures and pressures stacks more than 3 days, utilize stone coal powder after ordinary method will be stacked to add water again and stir, gained solution after filtration, extraction process promptly obtains vanadium compound.
The fineness of described stone coal powder can be 80～120 orders, best 3～15 days of pilling up time, and the stone coal powder after the stacking adds the water churning time and was advisable with 3～4 hours.
Bone coal is a mineral composition oxidation navajoite complicated and changeable, and multi mineral is arranged, and contains vanadium 0.1～8.5%.The industrial sulphuric acid that adds is as oxygenant, will be selectively and undissolved tervalent vanadium generation redox reaction, generate the vanadium of tetravalence, pentavalent and be dissolved in the acid, obtain blue vanadium sulfate acyl solution, other gangue composition does not then change and remaines in the ore pulp.The vanadium sulfate acyl that generates is the complicated mineral of metal such as vanadium generation in normal temperature and pressure oxidation and acid are molten in the bone coal ore deposit.The chemical reaction of its generation is:
(V
2O
3)X+2H
2SO
4+1/2O
2→V
2O
2(SO4)
2+2H
2O+X (1)
V
2O
2(OH)
4+2H
2SO
4+1/2O
2→V
2O
2(SO4)
2+4H
2O (2)
Oxidation conversion process of the present invention is under normal temperature and pressure stacking state, under the effect of reagent, elements such as vanadium in the complicated mineral composition in the bone coal ore deposit are carried out oxidation and chemical reaction, generate easily molten compound, in the normal temperature and pressure stacking time, make complicated mineral composition change the process of easily dissolving compound in the conversion process, the smelting metallization processes is simplified, process intensification, make complicated vanadium minerals oxidation conversion for easily dissolving compound, again after maturation process such as extraction, hydrolysis separation are handled, just qualified Vanadium Pentoxide in FLAKES of output and mine tailing.It is a kind of clearer production technology of intensified transformation that present method makes in the stacking process vanadium oxidation conversion leach stone coal powder at normal temperatures and pressures, and its main process is not subjected to the variation of mineral composition and restricts.Therefore, the present invention possesses skills, and technology is simple, metal recovery rate is high, vanadium is easily separated, reagent consumption is little, valuable metal is concentrated, low machinery is less demanding, founds the factory and invests advantages such as little.
Below in conjunction with embodiment technology contents of the present invention is further set forth.
Embodiment:
Embodiment 1
The mixed that the proportioning that will contain the industrial sulphuric acid of vanadium 1%, 80 ~ 120 purpose bone coal breezes and 98% and water is pressed 100:10:20 is even, stacked 3 days having under the place normal temperature and pressure of canopy, bone coal breeze after stacking is added water to be stirred 3-4 hours, filter with plate optical pressure filter, extraction, the vanadium leaching yield is 60%.
Embodiment 2
The proportioning that will contain the industrial sulphuric acid of vanadium 1%, 80～120 purpose bone coal breezes and 98% and water is even by the mixed of 100:20:10, stacked 7 days having under the place normal temperature and pressure of canopy, bone coal breeze after stacking is added water to be stirred 3-4 hours, filter with plate optical pressure filter, extraction, the vanadium leaching yield is 90%.
Embodiment 3
The mixed that the proportioning that will contain the industrial sulphuric acid of vanadium 1%, 80 ~ 120 purpose bone coal breezes and 98% and water is pressed 100:40:5 is even, stacked 15 days having under the place normal temperature and pressure of canopy, bone coal breeze after stacking is added water to be stirred 3-4 hours, filter with plate optical pressure filter, extraction, the vanadium leaching yield is 95%.
Embodiment 4
The mixed that the proportioning that will contain the industrial sulphuric acid of vanadium 1%, 80 ~ 120 purpose bone coal breezes and 98% and water is pressed 100:50:1 is even, stack more than 30 days or 30 days having under the place normal temperature and pressure of canopy, bone coal breeze after stacking is added water to be stirred 3-4 hours, filter with plate optical pressure filter, extraction, the vanadium leaching yield is 95%.
Claims (3)
1, a kind of from bone coal the method for oxidative conversion of leached vanadium, it is characterized in that may further comprise the steps: be raw material with the stone coal powder, 98% industrial sulphuric acid is a reagent, the industrial sulphuric acid of stone coal powder and 98% and the water proportioning by 100:10～50:1～20 is mixed, hide rain at normal temperatures and pressures and stack more than 3 days.
2, according to claim 1 from bone coal the method for oxidative conversion of leached vanadium, it is characterized in that described pilling up time is 3 to 15 days.
3, according to claim 1 and 2 from bone coal the method for oxidative conversion of leached vanadium, the fineness that it is characterized in that described stone coal powder is 80 ~ 120 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100352551A CN100480404C (en) | 2007-06-29 | 2007-06-29 | Method for leaching vanadium from stone-like coal by oxidation transformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100352551A CN100480404C (en) | 2007-06-29 | 2007-06-29 | Method for leaching vanadium from stone-like coal by oxidation transformation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101078063A CN101078063A (en) | 2007-11-28 |
| CN100480404C true CN100480404C (en) | 2009-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100352551A Expired - Fee Related CN100480404C (en) | 2007-06-29 | 2007-06-29 | Method for leaching vanadium from stone-like coal by oxidation transformation |
Country Status (1)
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| CN (1) | CN100480404C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760650B (en) * | 2010-02-05 | 2011-05-18 | 广州有色金属研究院 | Method for leaching vanadium in vanadium-containing stone coal by wet process |
| CN103160696B (en) * | 2013-02-26 | 2014-06-18 | 中南大学 | Method for carrying out microwave heating on stone coal containing vanadium to extract vanadium |
| CN106636680B (en) * | 2016-10-30 | 2022-08-26 | 武汉轻工大学 | Large-scale accumulation carbonization method for extracting vanadium from high-silica coal |
| CN106702179A (en) * | 2017-01-21 | 2017-05-24 | 武汉轻工大学 | Method for extracting vanadium from high-calcium type vanadium-containing stone coal in manganese-doping stacking process |
| CN107142382B (en) * | 2017-04-26 | 2019-03-08 | 武汉理工大学 | Utilize the method for capacitive deionization technology separation and concentration tetravalence vanadium |
-
2007
- 2007-06-29 CN CNB2007100352551A patent/CN100480404C/en not_active Expired - Fee Related
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| CN101078063A (en) | 2007-11-28 |
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