CN106756119A - The method and system of vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction - Google Patents
The method and system of vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction Download PDFInfo
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- CN106756119A CN106756119A CN201710183963.3A CN201710183963A CN106756119A CN 106756119 A CN106756119 A CN 106756119A CN 201710183963 A CN201710183963 A CN 201710183963A CN 106756119 A CN106756119 A CN 106756119A
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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
- 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
- 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
- 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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Abstract
The present invention proposes the method and system of vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction, wherein, the method for vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction includes：(1) vanadium-bearing slag of high calcium and high phosphor and silica and reduction coal are carried out into mixed processing, to obtain mixed material；(2) mixed material is carried out into reduction roasting dephosphorization treatment, to obtain dephosphorization product of roasting；(3) the dephosphorization product of roasting is carried out into molten office reason, to obtain molten iron and low-phosphorous vanadium slag；(4) the low-phosphorous vanadium slag is mixed with sodium salt and carries out sodium oxide baking treatment, to obtain water-soluble sodium vanadate clinker；(5) the water-soluble sodium vanadate clinker is carried out into water logging vanadium extraction treatment, to obtain vanadic anhydride product.The phosphorus in vanadium-bearing slag of high calcium and high phosphor can be effectively removed using the method for the vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction, and then significantly improves the rate of recovery and quality of iron and vanadium.
Description
Technical field
The invention belongs to metallurgical technology field, specifically, the present invention relates to the method for vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction
And system.
Background technology
Vanadium slag refers to that vanadium-bearing hot metal is oxidized into a kind of slag rich in barium oxide and ferriferous oxide through bessemerizing,
Its main component has MFe, FeO, SiO2、V2O3、TiO2、CaO、Al2O3, MgO and Cr2O3.The vanadium that there are about 60% in the world is from vanadium
Extracted in slag, the extraction vanadium method of existing vanadium slag is to be put into carry out oxidation roasting in rotary kiln or multiple hearth furnace after being mixed with additive
Burn, obtain the vanadate of solubility, precipitation is carried out again after vanadium is transferred to liquid phase by wet-leaching means from solid phase, by precipitation
Product calcining obtains V2O5Product.Phosphorus is that, containing the harmful element in vanadium leachate precipitation, it can form steady with vanadium in acid medium
Fixed and complicated complex compound phosphorus vanadium system's heteropoly acid and their salt, additionally, can also be with the iron ion in solution and aluminium ion
Form FePO4、AlPO4Precipitation, these can all pollute ammonium vanadate precipitation, have a strong impact on the carrying out of acid ammonium salt precipitation.Conventional is de-
Phosphorus means are subsequently adding appropriate calcium salt or magnesium salts formation calcium phosphate precipitation, typically to adjust pH value of solution between 9.5-11.0
It is required that the leachate P concentration after dephosphorization<0.015g/L.
CaO mass fractions are generally less than 3%, P in common vanadium slag2O5Mass fraction is generally less than 0.2%.In order to mitigate half
The burden of steel dephosphorization, vanadium-bearing hot metal blowing vanadium slag can add the calcium salt to carry out pre- dephosphorization simultaneously, obtain low-phosphorous half steel and high calcium is high
The special vanadium slag of phosphorus.This vanadium-bearing slag of high calcium and high phosphor is high because of itself CaO content, CaO meetings and V during sodium roasting2O5Generation is water insoluble
Calcium vanadate CaOV2O5Or the vanadium green grass or young crops calcium CaV containing calcium12O30, the mass fraction of CaO often increases by 1% will bring 4.7-
9.0% V2O5Loss, therefore sodium roasting-water logging process for extracting vanadium should not be used；If using calcification baking-acid-leaching vanadium-extracted work
Skill, can be such that substantial amounts of calcium and phosphorus is together entered into leachate along with vanadium, due to the presence for having a large amount of calcium ions in solution, adjust
Section pH value of solution can re-form vanadic acid calcium precipitate between 9.5-11.0, so can not be using the dephosphorization under traditional alkalescence condition
Method, and the dephosphorization problem under acid system is not yet captured.
Therefore, the technology to vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction need further development.
The content of the invention
It is contemplated that at least solving one of technical problem in correlation technique to a certain extent.Therefore, of the invention
One purpose is to propose a kind of method and system of vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction, wherein vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction
Method can carry out effective dephosphorization before vanadium-bearing slag of high calcium and high phosphor vanadium extraction, and can effectively reclaim the iron for obtaining high-quality and
Vanadium, while the rate of recovery of iron and vanadium can also be improved further.
According to an aspect of the present invention, the present invention proposes a kind of method of vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction, including：
(1) vanadium-bearing slag of high calcium and high phosphor and silica and reduction coal are carried out into mixed processing, to obtain mixed material；
(2) mixed material is carried out into reduction roasting dephosphorization treatment, to obtain dephosphorization product of roasting；
(3) the dephosphorization product of roasting is carried out into molten office reason, to obtain molten iron and low-phosphorous vanadium slag；
(4) the low-phosphorous vanadium slag is mixed with sodium salt and carries out sodium oxide baking treatment, to obtain water-soluble vanadic acid
Sodium clinker；
(5) the water-soluble sodium vanadate clinker is carried out into water logging vanadium extraction treatment, to obtain vanadic anhydride product.
Thus, the method for the vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction of the embodiment of the present invention, not only can effectively remove high calcium high
Phosphorus in phosphorus vanadium slag, it is to avoid sodium vanadate clinker phosphorus in water logging vanadium extraction enter containing in vanadium leachate so as to have a strong impact on precipitation effect
Really, recycling can also be carried out to the iron resource in vanadium-bearing slag of high calcium and high phosphor, it is final to obtain the low high-quality iron resource of phosphorus content
With vanadic anhydride product.
The method of vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction according to the above embodiment of the present invention can also have what is added as follows
Technical characteristic：
In some embodiments of the invention, in step (1), the content of CaO is 3-25 weights in the vanadium-bearing slag of high calcium and high phosphor
Amount %, P2O5Content be 0.2-1 weight %, V2O5Content for 5-20 weight %, Fe content be 20-35 weight %.Thus
The method of the vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction of the embodiment of the present invention can be processed effectively for high calcium Phosphorus vanadium slag high, be entered
And improve the scope of application of the method.
In some embodiments of the invention, the content of CaO is 5-15 weight %, P in the vanadium-bearing slag of high calcium and high phosphor2O5's
Content is 0.2-0.6 weight %, V2O5Content for 5-10 weight %, Fe content be 20-30 weight %.Thus the present invention is real
The method for applying the vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction of example can be processed effectively for high calcium Phosphorus vanadium slag high, and then raising should
The scope of application of method.
In some embodiments of the invention, in step (1), by the vanadium-bearing slag of high calcium and high phosphor and the silica and it is described also
Raw coal is 100 according to mass ratio:(5~15):(8~15) carry out the mixed processing.It is possible thereby to further improve follow-up going back
Former iron and dephosphorization under reducing atmosphere effect.
In some embodiments of the invention, in step (2), the temperature of the reduction roasting dephosphorization treatment is 1200-
1400℃.Thus, reduced iron and dephosphorization under reducing atmosphere effect are further improved.
In some embodiments of the invention, in step (2), the degree of metalization of the dephosphorization product of roasting is not less than
75%.Thus, it is possible to further improve the rate of recovery of iron.
In some embodiments of the invention, in step (3), P in the low-phosphorous vanadium slag2O5Content be not more than 0.1 weight
Amount %.Thus, it is possible to improve the quality of vanadium in follow-up water logging vanadium extraction treatment.
In some embodiments of the invention, P in the low-phosphorous vanadium slag2O5Content be not more than 0.05 weight %.Thus,
The quality of vanadium in follow-up water logging vanadium extraction treatment can be improved.
In some embodiments of the invention, in step (3), Fe contents are not more than 5 weight %, institute in the low-phosphorous vanadium slag
The rate of recovery for stating iron in vanadium-bearing slag of high calcium and high phosphor is not less than 80 weight %.
In some embodiments of the invention, in step (4), the mass ratio 100 of the low-phosphorous vanadium slag and sodium salt:(10~
30)。
In some embodiments of the invention, in step (4), the temperature of the sodium oxide baking treatment is 600-900
DEG C, the time is 1-2h.Thus, it is possible to further improve the yield of water-soluble sodium vanadate clinker, and then improve the rate of recovery of vanadium.
According to another aspect of the present invention, the invention allows for a kind of vanadium-bearing slag of high calcium and high phosphor for implementing above-described embodiment
The system of the method for dephosphorization vanadium extraction, the system includes：
Mixing arrangement, the mixing arrangement has vanadium-bearing slag of high calcium and high phosphor entrance, silica entrance, reduction coal entrance and mixture
Material outlet, the mixing arrangement is suitable to for vanadium-bearing slag of high calcium and high phosphor and silica and reduction coal to carry out mixed processing, to be mixed
Material；
There is reduction roasting dephosphorization apparatus, the reduction roasting dephosphorization apparatus mixed material entrance and dephosphorization product of roasting to go out
Mouthful, the mixed material entrance is connected with mixed material outlet, and the reduction roasting dephosphorization apparatus are suitable to the mixing
Material carries out reduction roasting dephosphorization treatment, to obtain dephosphorization product of roasting；
There is molten separating device, the molten separating device dephosphorization product of roasting entrance, molten iron outlet and low-phosphorous vanadium slag to export, described
Dephosphorization product of roasting entrance is connected with dephosphorization product of roasting outlet, and the molten separating device is suitable to the dephosphorization product of roasting
Molten office reason is carried out, to obtain molten iron and low-phosphorous vanadium slag, molten point of stove of the molten preferred combustion gas of separating device；
Sodium oxide baking device, the oxidizing roasting device have low-phosphorous vanadium slag entrance, sodium salt entrance, air intake and
Water-soluble sodium vanadate clinker outlet, the low-phosphorous vanadium slag entrance is connected with the low-phosphorous vanadium slag outlet, the oxidizing roasting device
It is suitable to for the low-phosphorous vanadium slag to carry out sodium oxide baking treatment, to obtain water-soluble sodium vanadate clinker；
Water logging vanadium extraction device, the water logging vanadium extraction device has water-soluble sodium vanadate clinker entrance, vanadic anhydride outlet
Exported with tailings, the water-soluble sodium vanadate clinker entrance is connected with the water-soluble sodium vanadate clinker outlet, the flooding
Vanadium device is suitable to for the water-soluble sodium vanadate clinker to carry out water logging vanadium extraction treatment, to obtain vanadic anhydride and tailings.
Thus, by the system of the vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction using the above embodiment of the present invention, can not only have
Phosphorus in effect removing vanadium-bearing slag of high calcium and high phosphor, it is to avoid sodium vanadate clinker phosphorus in water logging vanadium extraction enter containing in vanadium leachate so as to serious
Influence precipitation effect, can also carry out recycling to the iron resource in vanadium-bearing slag of high calcium and high phosphor, and final acquisition phosphorus content is low
High-quality iron resource and vanadic anhydride product.
The system of vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction according to the above embodiment of the present invention can also have what is added as follows
Technical characteristic：
In some embodiments of the invention, the reduction roasting dephosphorization apparatus are rotary hearth furnace, and the molten packing is set to combustion
Molten point of stove of gas, the sodium oxide baking device is rotary kiln.Thus, it is possible to further improve vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction
Efficiency.
Brief description of the drawings
Fig. 1 is the flow chart of the method for vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction according to an embodiment of the invention.
Fig. 2 is the structural representation of the system of vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction according to an embodiment of the invention.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, it is intended to for explaining the present invention, and be not considered as limiting the invention.
According to an aspect of the present invention, the method that the present invention proposes vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction, according to this hair
The method of the vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction of bright embodiment includes：(1) vanadium-bearing slag of high calcium and high phosphor is carried out with silica and reduction coal
Mixed processing, to obtain mixed material；(2) mixed material is carried out into reduction roasting dephosphorization treatment, to obtain dephosphorization roasting
Product；(3) dephosphorization product of roasting is carried out into molten office reason, to obtain molten iron and low-phosphorous vanadium slag；(4) by low-phosphorous vanadium slag and sodium salt
Mix and carry out sodium oxide baking treatment, to obtain water-soluble sodium vanadate clinker；(5) water-soluble sodium vanadate clinker is carried out
Water logging vanadium extraction is processed, to obtain vanadic anhydride product.
The method of vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction according to the above embodiment of the present invention, first by vanadium-bearing slag of high calcium and high phosphor,
Silica and reduction coal carry out mixed processing and obtain mixed material；Then mixed material is carried out into reduction roasting dephosphorization treatment, is obtained
Dephosphorization product of roasting, realizes the purpose of dephosphorization；Then molten office reason is carried out to dephosphorization product of roasting, by iron from dephosphorization product of roasting
In separate, obtain molten iron and low-phosphorous vanadium slag, then low-phosphorous vanadium slag is mixed with sodium salt carry out sodium oxide baking treatment, obtain
Water-soluble sodium vanadate clinker, finally carries out water logging vanadium extraction treatment to water-soluble sodium vanadate clinker, finally gives vanadic anhydride product
Product.Thus, the method for the vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction of the embodiment of the present invention not only can effectively remove vanadium-bearing slag of high calcium and high phosphor
In phosphorus, it is to avoid sodium vanadate clinker phosphorus in water logging vanadium extraction enters containing so as to have a strong impact on precipitation effect, may be used also in vanadium leachate
Recycling is carried out with to the iron resource in vanadium-bearing slag of high calcium and high phosphor, it is final to obtain the low high-quality iron resource of phosphorus content and five oxidations
Two vanadium products.Additionally, the method also have vanadium-bearing slag of high calcium and high phosphor dephosphorization rate it is high, iron and vanadium recovery are high, superior product quality it is excellent
Point.
The method of the vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction of the above embodiment of the present invention is retouched in detail below with reference to Fig. 1
State.
S100：Mixed processing
Embodiments in accordance with the present invention, carry out mixed processing, to obtain by vanadium-bearing slag of high calcium and high phosphor and silica and reduction coal
Mixed material.
According to a particular embodiment of the invention, the content of CaO is 3-25 weight %, P in vanadium-bearing slag of high calcium and high phosphor2O5Content
It is 0.2-1 weight %, V2O5Content for 5-20 weight %, Fe content be 20-35 weight %.Thus, the embodiment of the present invention
The method of vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction can be higher than 3 weight %, P effectively for CaO content2O5Content is higher than 0.2 weight %
Vanadium-bearing slag of high calcium and high phosphor processed, and the iron and vanadic anhydride product of high-quality can be obtained.
According to a particular embodiment of the invention, the content of CaO is 5-15 weight %, P in vanadium-bearing slag of high calcium and high phosphor2O5Content
It is 0.2-0.6 weight %, V2O5Content for 5-10 weight %, Fe content be 20-30 weight %.Thus, the embodiment of the present invention
Vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction method can effectively for CaO content be 5-15 weight %, P2O5Content is 0.2-0.6
The vanadium-bearing slag of high calcium and high phosphor of weight % is processed, and can obtain the iron and vanadic anhydride product of high-quality.
According to a particular embodiment of the invention, can be according to mass ratio with silica and reduction coal by vanadium-bearing slag of high calcium and high phosphor
100:(5~15):(8~15) carry out mixed processing.It is possible thereby to further improve sequential reduction iron and dephosphorization under reducing atmosphere effect.Root
According to specific example of the invention, inventor has found, to high calcium high phosphorus except the silica and reduction coal of allocating aforementioned proportion in ferrovanadium slag into,
High calcium high phosphorus can be effectively improved except the percent reduction and the percent reduction of iron of calcium phosphate in ferrovanadium slag, so improve dephosphorization effect with
And the rate of recovery of iron.
S200：Reduction roasting dephosphorization treatment
Embodiments in accordance with the present invention, reduction roasting dephosphorization treatment is carried out by mixed material, is produced to obtain dephosphorization roasting
Thing.Thus, reduction roasting dephosphorization treatment is carried out by mixed material, the calcium phosphate in mixed material can be made to be reduced into phosphorus
Simple substance, and entered in flue gas in the form of steam, hereby it is achieved that the effect of dephosphorization；Simultaneously can also be to the iron in mixed material
Reduce obtaining fe.
According to a particular embodiment of the invention, reduction roasting is carried out after allocating silica and reduction coal into except ferrovanadium slag to high calcium high phosphorus
Dephosphorization treatment is burnt to carry out dephosphorization and to carry iron.Specifically, dephosphorization can be carried out with iron reaction is proposed according to following reaction equation：
Dephosphorisation reaction：Ca3PO4+5C+SiO2=P2↑+5CO↑+3CaSiO3
Propose iron reaction：FeO·V2O3+ C=V2O3+Fe+CO
FeO·V2O3+ CO=V2O3+Fe+CO2
According to a particular embodiment of the invention, the temperature of reduction roasting dephosphorization treatment can be 1200-1400 DEG C.Inventor
It was found that, under the conditions of the reduction roasting dephosphorization treatment, can further improve phosphorus removal efficiency and iron percent reduction.
According to a particular embodiment of the invention, by using above-mentioned reduction roasting dephosphorization treatment condition, the dephosphorization roasting for obtaining
The degree of metalization for burning product is not less than 75%, and then effectively the iron in vanadium-bearing slag of high calcium and high phosphor can be reclaimed.
S300：Molten office reason
According to a particular embodiment of the invention, dephosphorization product of roasting is carried out into molten office reason, to obtain molten iron and low-phosphorous
Vanadium slag.Thus, manage dephosphorization product of roasting can be entered the iron in dephosphorization product of roasting and low-phosphorous vanadium slag by molten office
Row is efficiently separated, and realizes the recovery to iron.Specific example of the invention, Fe contents are not in isolated low-phosphorous vanadium slag
More than 5 weight %；The rate of recovery of iron is not less than 80 weight %.
According to a particular embodiment of the invention, P in the low-phosphorous vanadium slag that office reason is obtained is melted2O5Content be not more than 0.1 weight
Amount %.Thus, it is possible to being prevented effectively from follow-up sodium vanadate clinker phosphorus in water logging vanadium extraction enters heavy containing being had a strong impact in vanadium leachate
Vanadium effect, it is final to obtain high-quality vanadic anhydride product.
According to a particular embodiment of the invention, P in low-phosphorous vanadium slag2O5Content be not more than 0.05 weight %.Thus, it is possible to
Follow-up sodium vanadate clinker phosphorus in water logging vanadium extraction is prevented effectively to enter containing precipitation effect is had a strong impact in vanadium leachate, it is final to obtain
High-quality vanadic anhydride product.
According to a particular embodiment of the invention, the temperature for melting office reason can be 1500-1600 degrees Celsius, it is possible thereby to enter
One step improves the separative efficiency of molten iron and low-phosphorous vanadium slag, and then realizes the high efficiente callback of iron.
S400：Sodium oxide baking treatment
Embodiments in accordance with the present invention, low-phosphorous vanadium slag is mixed with sodium salt and sodium oxide baking treatment is carried out, so as to
To water-soluble sodium vanadate clinker.Thus, the dephosphorization product of roasting after dephosphorization processes by sodium oxide baking obtain water-soluble again
Property sodium vanadate clinker, vanadic anhydride product can be obtained using existing water logging vanadium extraction technology.
According to a particular embodiment of the invention, the temperature of sodium oxide baking treatment can be 600-900 DEG C, and the time is 1-
2h.Inventor has found that the dephosphorization product of roasting after dephosphorization carries out sodium oxide baking treatment, in can making dephosphorization product of roasting
Vanadium be oxidized to the vanadium of positive pentavalent, and exist in the form of water-soluble sodium vanadate, the manage bar especially at the sodium oxide baking
Under part, the oxygenation efficiency of vanadium is higher.Thus, the present invention can be further by the temperature and time for controlling sodium oxide baking to process
The yield of water-soluble sodium vanadate clinker is improved, and then improves the rate of recovery of vanadium.
According to a particular embodiment of the invention, in the sodium oxide baking processing procedure for carrying out under the above-described reaction conditions,
The reaction that dephosphorization product of roasting specifically occurs is as follows：
Na2O+V2O3+O2=2NaVO3Sodium metavanadate (4)
2Na2O+V2O3+O2=Na4V2O7Sodium pyrovanadate (5)
3Na2O+V2O3+O2=Na3VO4Sodium vanadate (6)
According to a particular embodiment of the invention, in processing the water miscible sodium vanadate clinker that obtains by sodium oxide baking
Sodium vanadate can include sodium vanadate, sodium pyrovanadate and sodium metavanadate at least one.At least 90% vanadium is for chemical valence
The sodium vanadate of positive pentavalent.Inventor has found that the sodium vanadate of positive pentavalent is water-soluble preferably, thus, it is possible to further improve follow-up water
The yield of vanadium during leaching and vanadium extraction treatment.Thus, it is possible to further improve the yield of water-soluble sodium vanadate, and then improve the yield of vanadium.
According to a particular embodiment of the invention, dephosphorization product of roasting and sodium salt can be 100 according to mass ratio:(10-30)
Mixed.Thus, inventor's discovery, by adding the sodium salt of said ratio, and under conditions of air is passed through, can enter one
Step improves the yield of sodium vanadate, and then improves the rate of recovery of vanadium.
S500：Water logging vanadium extraction is processed
Embodiments in accordance with the present invention, water logging vanadium extraction treatment is carried out by water-soluble sodium vanadate clinker, to obtain five oxidations
Two vanadium products.
According to a particular embodiment of the invention, water logging vanadium extraction treatment can specifically be carried out according to the following steps：First by water
The sodium vanadate clinker of dissolubility carries out water logging and obtains containing vanadium solution and water logging slag, and then will contain vanadium solution carries out purification and impurity removal, then right
Acid ammonium salt precipitation treatment is carried out containing vanadium solution and obtain ammonium poly-vanadate precipitation, ammonium poly-vanadate is finally carried out into calcination processing and obtains five
V 2 O.Thus, the oxidation of acquisition five two can effectively be reclaimed by carrying out water logging vanadium extraction treatment to water-soluble sodium vanadate clinker
Vanadium product.
According to another aspect of the present invention, above-mentioned vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction is implemented the invention allows for one kind
Method system, with reference to Fig. 2, including：Mixing arrangement 100, reduction roasting dephosphorization apparatus 200, molten separating device 300, sodium oxide molybdena
Change calciner 400 and water logging vanadium extraction device 500.
Using the system of above-mentioned vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction, first by mixing arrangement 100 to vanadium-bearing slag of high calcium and high phosphor,
Silica and reduction coal carry out mixed processing, obtain mixed material, and then mixed material is carried out in reduction roasting dephosphorization apparatus 200
Reduction roasting dephosphorization treatment, obtains dephosphorization product of roasting, is achieved in the purpose of dephosphorization, then dephosphorization is roasted in molten separating device 300
Burning product carries out molten office reason, and the iron in dephosphorization product of roasting is separated, and obtains molten iron and low-phosphorous vanadium slag, then in sodium oxide molybdena
Sodium oxide baking treatment is carried out to low-phosphorous vanadium slag in change calciner 400, water-soluble sodium vanadate clinker is obtained, finally in water logging
Water logging vanadium extraction treatment is carried out to water-soluble sodium vanadate clinker in vanadium extraction device 500, vanadic anhydride product is finally given.
Thus, the system that the present invention passes through the vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction using above-described embodiment, can be further
Improve the rate of recovery of the iron resource in vanadium-bearing slag of high calcium and high phosphor, and the phosphorus effectively in removing vanadium-bearing slag of high calcium and high phosphor, it is to avoid sodium vanadate is ripe
Material phosphorus in water logging vanadium extraction enters containing so as to have a strong impact on precipitation effect, and then further improving high calcium high phosphorus vanadium in vanadium leachate
The dephosphorization effect of slag, and improve the rate of recovery and quality of iron and vanadium.
The system of the vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction of the above embodiment of the present invention is retouched in detail below with reference to Fig. 2
State.
Mixing arrangement 100
Embodiments in accordance with the present invention, mixing arrangement 100 has vanadium-bearing slag of high calcium and high phosphor entrance 110, silica entrance 120, goes back
Raw coal entrance 130 and mixed material outlet 140, mixing arrangement 100 is suitable to carry out vanadium-bearing slag of high calcium and high phosphor with silica and reduction coal
Mixed processing, to obtain mixed material.
According to a particular embodiment of the invention, the content of CaO is 3-25 weight %, P in vanadium-bearing slag of high calcium and high phosphor2O5Content
It is 0.2-1 weight %, V2O5Content for 5-20 weight %, Fe content be 20-35 weight %.Thus, the embodiment of the present invention
The system of vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction can be higher than 3 weight %, P effectively for CaO content2O5Content is higher than 0.2 weight %
Vanadium-bearing slag of high calcium and high phosphor processed, and the iron and vanadic anhydride product of high-quality can be obtained.
According to a particular embodiment of the invention, the content of CaO is 5-15 weight %, P in vanadium-bearing slag of high calcium and high phosphor2O5Content
It is 0.2-0.6 weight %, V2O5Content for 5-10 weight %, Fe content be 20-30 weight %.Thus, the embodiment of the present invention
Vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction system can effectively for CaO content be 5-15 weight %, P2O5Content is 0.2-0.6
The vanadium-bearing slag of high calcium and high phosphor of weight % is processed, and can obtain the iron and vanadic anhydride product of high-quality.
According to a particular embodiment of the invention, can be according to mass ratio with silica and reduction coal by vanadium-bearing slag of high calcium and high phosphor
100:(5~15):(8~15) carry out mixed processing.It is possible thereby to further improve sequential reduction iron and dephosphorization under reducing atmosphere effect.Root
According to specific example of the invention, inventor has found, to high calcium high phosphorus except the silica and reduction coal of allocating aforementioned proportion in ferrovanadium slag into,
High calcium high phosphorus can be effectively improved except the percent reduction and the percent reduction of iron of calcium phosphate in ferrovanadium slag, so improve dephosphorization effect with
And the rate of recovery of iron.
Reduction roasting dephosphorization apparatus 200
There is embodiments in accordance with the present invention, reduction roasting dephosphorization apparatus 200 mixed material entrance 210 and dephosphorization roasting to produce
Thing outlet 220, mixed material entrance 210 is connected with mixed material outlet 140, and reduction roasting dephosphorization apparatus are suitable to mixed material
Reduction roasting dephosphorization treatment is carried out, to obtain dephosphorization product of roasting.
Thus, reduction roasting dephosphorization treatment is carried out to mixed material by using reduction roasting dephosphorization apparatus 200, can be made
Calcium phosphate in mixed material is reduced into phosphorus simple substance, and is entered in flue gas in the form of steam, hereby it is achieved that the effect of dephosphorization
Really；Can also the iron in mixed material reduce obtaining fe simultaneously.
According to a particular embodiment of the invention, reduction roasting is carried out after allocating silica and reduction coal into except ferrovanadium slag to high calcium high phosphorus
Dephosphorization treatment is burnt to carry out dephosphorization and to carry iron.Specifically, dephosphorization can be carried out with iron reaction is proposed according to following reaction equation：
Dephosphorisation reaction：Ca3PO4+5C+SiO2=P2↑+5CO↑+3CaSiO3
Propose iron reaction：FeO·V2O3+ C=V2O3+Fe+CO
FeO·V2O3+ CO=V2O3+Fe+CO2
According to a particular embodiment of the invention, the temperature of reduction roasting dephosphorization treatment can be 1200-1400 DEG C.Inventor
It was found that, under the conditions of the reduction roasting dephosphorization treatment, can further improve phosphorus removal efficiency and iron percent reduction.
According to a particular embodiment of the invention, by using above-mentioned reduction roasting dephosphorization treatment condition, the dephosphorization roasting for obtaining
The degree of metalization for burning product is not less than 75%, and then effectively the iron in vanadium-bearing slag of high calcium and high phosphor can be reclaimed.
According to a particular embodiment of the invention, reduction roasting dephosphorization apparatus are rotary hearth furnace, thus, it is possible to further improve also
The efficiency of original roasting dephosphorization treatment, and reducing energy consumption.
Molten separating device 300
Embodiments in accordance with the present invention, melting separating device 300 has dephosphorization product of roasting entrance 310, molten iron outlet 320 and low
Phosphorus vanadium slag outlet 330, dephosphorization product of roasting entrance 310 and dephosphorization product of roasting outlet 220 is connected, melt separating device 300 be suitable to by
Dephosphorization product of roasting carries out molten office reason, to obtain molten iron and low-phosphorous vanadium slag.
Thus, after molten office reason being carried out to dephosphorization product of roasting using molten separating device 300, can be by dephosphorization product of roasting
Iron and low-phosphorous vanadium slag efficiently separated, realize recovery to iron.Specific example of the invention, isolated is low
Fe contents are not more than 5 weight % in phosphorus vanadium slag；The rate of recovery of iron is not less than 80 weight %.
According to a particular embodiment of the invention, P in the low-phosphorous vanadium slag that office reason is obtained is melted2O5Content be not more than 0.1 weight
Amount %.Thus, it is possible to being prevented effectively from follow-up sodium vanadate clinker phosphorus in water logging vanadium extraction enters heavy containing being had a strong impact in vanadium leachate
Vanadium effect, it is final to obtain high-quality vanadic anhydride product.
According to a particular embodiment of the invention, P in low-phosphorous vanadium slag2O5Content be not more than 0.05 weight %.Thus, it is possible to
Follow-up sodium vanadate clinker phosphorus in water logging vanadium extraction is prevented effectively to enter containing precipitation effect is had a strong impact in vanadium leachate, it is final to obtain
High-quality vanadic anhydride product.
According to a particular embodiment of the invention, the temperature for melting office reason can be 1500-1600 degrees Celsius, it is possible thereby to enter
One step improves the separative efficiency of molten iron and low-phosphorous vanadium slag, and then realizes the high efficiente callback of iron.
According to a particular embodiment of the invention, molten packing is set to molten point of stove of combustion gas.It is possible thereby to further improve molten point of effect
Rate, reducing energy consumption.
Sodium oxide baking device 400
Embodiments in accordance with the present invention, oxidizing roasting device 400 has low-phosphorous vanadium slag entrance 410, sodium salt entrance 420, sky
Gas entrance 430 and water-soluble sodium vanadate clinker outlet 440, low-phosphorous vanadium slag entrance 410 is connected with low-phosphorous vanadium slag outlet 330, aoxidizes
Calciner 400 is suitable to for low-phosphorous vanadium slag to carry out sodium oxide baking treatment, to obtain water-soluble sodium vanadate clinker.Thus,
Dephosphorization product of roasting after dephosphorization processes by sodium oxide baking obtain water-soluble sodium vanadate clinker again, using existing water
Leaching and vanadium extraction technology can obtain vanadic anhydride product.
According to a particular embodiment of the invention, the temperature of sodium oxide baking treatment can be 600-900 DEG C, and the time is 1-
2h.Inventor has found that the dephosphorization product of roasting after dephosphorization carries out sodium oxide baking treatment, in can making dephosphorization product of roasting
Vanadium be oxidized to the vanadium of positive pentavalent, and exist in the form of water-soluble sodium vanadate, the manage bar especially at the sodium oxide baking
Under part, the oxygenation efficiency of vanadium is higher.Thus, the present invention can be further by the temperature and time for controlling sodium oxide baking to process
The yield of water-soluble sodium vanadate clinker is improved, and then improves the rate of recovery of vanadium.
According to a particular embodiment of the invention, in the sodium oxide baking processing procedure for carrying out under the above-described reaction conditions,
The reaction that dephosphorization product of roasting specifically occurs is as follows：
Na2O+V2O3+O2=2NaVO3Sodium metavanadate (4)
2Na2O+V2O3+O2=Na4V2O7Sodium pyrovanadate (5)
3Na2O+V2O3+O2=Na3VO4Sodium vanadate (6)
According to a particular embodiment of the invention, in processing the water miscible sodium vanadate clinker that obtains by sodium oxide baking
Sodium vanadate can include sodium vanadate, sodium pyrovanadate and sodium metavanadate at least one.At least 90% vanadium is for chemical valence
The sodium vanadate of positive pentavalent.Inventor has found that the sodium vanadate of positive pentavalent is water-soluble preferably, thus, it is possible to further improve follow-up water
The yield of vanadium during leaching and vanadium extraction treatment.Thus, it is possible to further improve the yield of water-soluble sodium vanadate, and then improve the yield of vanadium.
According to a particular embodiment of the invention, dephosphorization product of roasting and sodium salt can be 100 according to mass ratio:(10-30)
Mixed.Thus, inventor's discovery, by adding the sodium salt of said ratio, and under conditions of air is passed through, can enter one
Step improves the yield of sodium vanadate, and then improves the rate of recovery of vanadium.
According to a particular embodiment of the invention, sodium oxide baking device is rotary kiln.Thus, it is possible to further improve oxygen
Change the efficiency of sodium roasting treatment.
Water logging vanadium extraction device 500
There is embodiments in accordance with the present invention, water logging vanadium extraction device 500 water-soluble sodium vanadate clinker entrance 510, five to aoxidize
Two vanadium outlet 520 and tailings outlet 530, water-soluble sodium vanadate clinker entrance 510 export 440 phases with water-soluble sodium vanadate clinker
Even, water logging vanadium extraction device 500 is suitable to for water-soluble sodium vanadate clinker to carry out water logging vanadium extraction treatment, so as to obtain vanadic anhydride and
Tailings.
According to a particular embodiment of the invention, water logging is carried out to water-soluble sodium vanadate clinker in water logging vanadium extraction device 500
Vanadium extraction is processed, and finally gives vanadic anhydride product.
According to a particular embodiment of the invention, water logging vanadium extraction device 500 further includes water immersion, purifier, sinks
Vanadium device and calciner plant.Wherein, water immersion is suitable to for water miscible sodium vanadate clinker to carry out Soaking treatment, to be contained
Vanadium solution and water logging slag；Purifier is suitable to that purification and impurity removal will be carried out containing vanadium solution, so as to after being purified containing vanadium solution；It is heavy
Vanadium device be suitable to purification after carry out acid ammonium salt precipitation treatment containing vanadium solution, so as to obtain ammonium poly-vanadate precipitation；Calcining dress
Put and be suitable to carry out calcination processing to ammonium poly-vanadate, to obtain vanadic anhydride product.Thus, by ripe to water-soluble sodium vanadate
Material carries out water logging vanadium extraction treatment and can effectively reclaim acquisition vanadic anhydride product.
Embodiment 1
By domestic certain company's vanadium-bearing slag of high calcium and high phosphor, (CaO mass fractions are 3%, P2O5Mass fraction is 0.2%, V2O5Quality
Fraction be 20%, Fe mass fractions for 35%) with silica and reduction coal in mass ratio 100:5:15 are mixed to get mixed material.Will
Mixed material carries out reduction roasting in rotary hearth furnace at 1200 DEG C, and phosphorus is mainly entered in flue gas in the form of phosphorous vapor, reaction
Dephosphorization product of roasting is obtained after end, the degree of metalization of dephosphorization product of roasting is 80%.By dephosphorization product of roasting in molten point of combustion gas
Carry out melting at a temperature of 1550 DEG C in stove and get molten iron and low-phosphorous vanadium slag, molten iron can send to steel-making, P in low-phosphorous vanadium slag2O5Matter
Amount fraction is that 0.09%, Fe mass fractions are 5%.By low-phosphorous vanadium slag and sodium salt in mass ratio 100:After 10 mixing in rotary kiln
600 DEG C of sodium oxide baking 1h obtain water-soluble sodium vanadate clinker, and the ratio that wherein pentavalent vanadium accounts for full vanadium is 92%.Finally by water
Dissolubility sodium vanadate clinker carries out water logging vanadium extraction treatment and obtains vanadic anhydride (grade 98.8%) and tailings.The vanadium of whole flow process is returned
Yield 95%, iron recovery 85%.
Embodiment 2
By domestic certain company's vanadium-bearing slag of high calcium and high phosphor, (CaO mass fractions are 25%, P2O5Mass fraction is 1%, V2O5Quality
Fraction be 5%, Fe mass fractions for 20%) with silica and reduction coal in mass ratio 100:15:8 are mixed to get mixed material.Will
Mixed material carries out reduction roasting in rotary hearth furnace at 1400 DEG C, and phosphorus is mainly entered in flue gas in the form of phosphorous vapor, reaction
Dephosphorization product of roasting is obtained after end, the degree of metalization of dephosphorization product of roasting is 75%.By dephosphorization product of roasting in molten point of combustion gas
Carry out melting at a temperature of 1600 DEG C in stove and get molten iron and low-phosphorous vanadium slag, molten iron can send to steel-making, P in low-phosphorous vanadium slag2O5Matter
Amount fraction is that 0.05%, Fe mass fractions are 3%.By low-phosphorous vanadium slag and sodium salt in mass ratio 100:After 30 mixing in rotary kiln
900 DEG C of sodium oxide baking 1.5h obtain water-soluble sodium vanadate clinker, and the ratio that wherein pentavalent vanadium accounts for full vanadium is 96%.Finally will
Water-soluble sodium vanadate clinker carries out water logging vanadium extraction treatment and obtains vanadic anhydride (grade 99.2%) and tailings.The vanadium of whole flow process
The rate of recovery 97%, iron recovery 80%.
Embodiment 3
By domestic certain company's vanadium-bearing slag of high calcium and high phosphor, (CaO mass fractions are 15%, P2O5Mass fraction is 0.6%, V2O5Matter
Amount fraction be 7%, Fe mass fractions for 30%) with silica and reduction coal in mass ratio 100:10:10 are mixed to get mixed material.
Mixed material is carried out into reduction roasting in rotary hearth furnace at 1300 DEG C, phosphorus is mainly entered in flue gas in the form of phosphorous vapor, instead
Dephosphorization product of roasting is obtained after should terminating, the degree of metalization of dephosphorization product of roasting is 82%.Dephosphorization product of roasting is melted in combustion gas
Divide in stove carries out melting getting molten iron and low-phosphorous vanadium slag at a temperature of 1600 DEG C, and molten iron can send to steel-making, P in low-phosphorous vanadium slag2O5
Mass fraction is that 0.04%, Fe mass fractions are 4%.By low-phosphorous vanadium slag and sodium salt in mass ratio 100:In rotary kiln after 20 mixing
Interior 800 DEG C of sodium oxide baking 2h obtain water-soluble sodium vanadate clinker, and the ratio that wherein pentavalent vanadium accounts for full vanadium is 95%.Finally will
Water-soluble sodium vanadate clinker carries out water logging vanadium extraction treatment and obtains vanadic anhydride (grade 99.0%) and tailings.The vanadium of whole flow process
The rate of recovery 96%, iron recovery 87%.
Embodiment 4
By domestic certain company's vanadium-bearing slag of high calcium and high phosphor, (CaO mass fractions are 5%, P2O5Mass fraction is 0.2%, V2O5Quality
Fraction be 10%, Fe mass fractions for 30%) with silica and reduction coal in mass ratio 100:8:9 are mixed to get mixed material.Will
Mixed material carries out reduction roasting in rotary hearth furnace at 1350 DEG C, and phosphorus is mainly entered in flue gas in the form of phosphorous vapor, reaction
Dephosphorization product of roasting is obtained after end, the degree of metalization of dephosphorization product of roasting is 85%.By dephosphorization product of roasting in molten point of combustion gas
Carry out melting at a temperature of 1500 DEG C in stove and get molten iron and low-phosphorous vanadium slag, molten iron can send to steel-making, P in low-phosphorous vanadium slag2O5Matter
Amount fraction is that 0.03%, Fe mass fractions are 2%.By low-phosphorous vanadium slag and sodium salt in mass ratio 100:After 25 mixing in rotary kiln
750 DEG C of sodium oxide baking 2h obtain water-soluble sodium vanadate clinker, and the ratio that wherein pentavalent vanadium accounts for full vanadium is 98%.Finally by water
Dissolubility sodium vanadate clinker carries out water logging vanadium extraction treatment and obtains vanadic anhydride (grade 99.4%) and tailings.The vanadium of whole flow process is returned
Yield 98%, iron recovery 90%.
Embodiment 5
By domestic certain company's vanadium-bearing slag of high calcium and high phosphor, (CaO mass fractions are 10%, P2O5Mass fraction is 0.4%, V2O5Matter
Amount fraction be 8%, Fe mass fractions for 25%) with silica and reduction coal in mass ratio 100:11:12 are mixed to get mixed material.
Mixed material is carried out into reduction roasting in rotary hearth furnace at 1250 DEG C, phosphorus is mainly entered in flue gas in the form of phosphorous vapor, instead
Dephosphorization product of roasting is obtained after should terminating, the degree of metalization of dephosphorization product of roasting is 77%.Dephosphorization product of roasting is melted in combustion gas
Divide in stove carries out melting getting molten iron and low-phosphorous vanadium slag at a temperature of 1600 DEG C, and molten iron can send to steel-making, P in low-phosphorous vanadium slag2O5
Mass fraction is that 0.01%, Fe mass fractions are 3%.By low-phosphorous vanadium slag and sodium salt in mass ratio 100:In rotary kiln after 15 mixing
Interior 650 DEG C of sodium oxide baking 2h obtain water-soluble sodium vanadate clinker, and the ratio that wherein pentavalent vanadium accounts for full vanadium is 91%.Finally will
Water-soluble sodium vanadate clinker carries out water logging vanadium extraction treatment and obtains vanadic anhydride (grade 98.5%) and tailings.The vanadium of whole flow process
The rate of recovery 94%, iron recovery 82%.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be that machinery connects
Connect, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be in two elements
The connection in portion or two interaction relationships of element.For the ordinary skill in the art, can be according to specific feelings
Condition understands above-mentioned term concrete meaning in the present invention.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the invention or example.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.And, the specific features of description, structure, material or feature can be any
Combined in an appropriate manner in individual or multiple embodiments or example.Additionally, in the case of not conflicting, the technology of this area
Can be combined for the feature of the different embodiments or example described in this specification and different embodiments or example by personnel
And combination.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changes, replacing and modification.
Claims (10)
1. a kind of method of vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction, it is characterised in that including：
(1) vanadium-bearing slag of high calcium and high phosphor and silica and reduction coal are carried out into mixed processing, to obtain mixed material；
(2) mixed material is carried out into reduction roasting dephosphorization treatment, to obtain dephosphorization product of roasting；
(3) the dephosphorization product of roasting is carried out into molten office reason, to obtain molten iron and low-phosphorous vanadium slag；
(4) the low-phosphorous vanadium slag is mixed with sodium salt and carries out sodium oxide baking treatment, it is ripe to obtain water-soluble sodium vanadate
Material；
(5) the water-soluble sodium vanadate clinker is carried out into water logging vanadium extraction treatment, to obtain vanadic anhydride product.
2. the method for vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction according to claim 1, it is characterised in that in step (1), the height
The content of CaO is 3-25 weight %, P in calcium high phosphorus vanadium slag2O5Content be 0.2-1 weight %, V2O5Content be 5-20 weight
The content of amount %, Fe is 20-35 weight %；
Preferably, the content of CaO is 5-15 weight %, P in the vanadium-bearing slag of high calcium and high phosphor2O5Content be 0.2-0.6 weight %,
V2O5Content for 5-10 weight %, Fe content be 20-30 weight %.
3. the method for vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction according to claim 1, it is characterised in that in step (1), will be described
Vanadium-bearing slag of high calcium and high phosphor is 100 according to mass ratio with the silica and the reduction coal:(5~15):(8~15) carry out the mixing
Treatment.
4. the method for vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction according to claim 1, it is characterised in that in step (2), it is described also
The temperature of original roasting dephosphorization treatment is 1200-1400 DEG C.
5. the method for vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction according to claim 1, it is characterised in that described de- in step (2)
The degree of metalization of phosphorus product of roasting is not less than 75%.
6. the method for vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction according to claim 1, it is characterised in that described low in step (3)
P in phosphorus vanadium slag2O5Content be not more than 0.1 weight %；
Preferably, P in the low-phosphorous vanadium slag2O5Content be not more than 0.05 weight %.
7. the method for vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction according to claim 1, it is characterised in that described low in step (3)
Fe contents are not more than 5 weight % in phosphorus vanadium slag, and the rate of recovery of iron is not less than 80 weight % in the vanadium-bearing slag of high calcium and high phosphor.
8. the method for vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction according to claim 1, it is characterised in that described low in step (4)
The mass ratio 100 of phosphorus vanadium slag and sodium salt:(10~30).
9. the method for vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction according to claim 1, it is characterised in that in step (4), the oxygen
The temperature for changing sodium roasting treatment is 600-900 DEG C, and the time is 1-2h.
10. a kind of system for implementing the method for vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction described in claim any one of 1-9, its feature exists
In, including：
There is mixing arrangement, the mixing arrangement vanadium-bearing slag of high calcium and high phosphor entrance, silica entrance, reduction coal entrance and mixed material to go out
Mouthful, the mixing arrangement is suitable to for vanadium-bearing slag of high calcium and high phosphor and silica and reduction coal to carry out mixed processing, to obtain mixed material；
There is reduction roasting dephosphorization apparatus, the reduction roasting dephosphorization apparatus mixed material entrance and dephosphorization product of roasting to export,
The mixed material entrance is connected with mixed material outlet, and the reduction roasting dephosphorization apparatus are suitable to the mixed material
Reduction roasting dephosphorization treatment is carried out, to obtain dephosphorization product of roasting；
There is molten separating device, the molten separating device dephosphorization product of roasting entrance, molten iron outlet and low-phosphorous vanadium slag to export, the dephosphorization
Product of roasting entrance is connected with dephosphorization product of roasting outlet, and the molten separating device is suitable to carry out the dephosphorization product of roasting
Molten office reason, to obtain molten iron and low-phosphorous vanadium slag, molten point of stove of the molten preferred combustion gas of separating device；
Sodium oxide baking device, the oxidizing roasting device has low-phosphorous vanadium slag entrance, sodium salt entrance, air intake and water-soluble
Property the outlet of sodium vanadate clinker, the low-phosphorous vanadium slag entrance is connected with the low-phosphorous vanadium slag outlet, and the oxidizing roasting device is suitable to
The low-phosphorous vanadium slag is carried out into sodium oxide baking treatment, to obtain water-soluble sodium vanadate clinker；
Water logging vanadium extraction device, the water logging vanadium extraction device has water-soluble sodium vanadate clinker entrance, vanadic anhydride outlet and tail
Slag is exported, and the water-soluble sodium vanadate clinker entrance is connected with the water-soluble sodium vanadate clinker outlet, the water logging vanadium extraction dress
Put and be suitable to for the water-soluble sodium vanadate clinker to carry out water logging vanadium extraction treatment, to obtain vanadic anhydride and tailings,
Preferably, the reduction roasting dephosphorization apparatus are rotary hearth furnace, and the molten packing is set to combustion gas molten point of stove, the oxidation sodium
Calciner is rotary kiln.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114350964A (en) * | 2021-11-30 | 2022-04-15 | 攀钢集团研究院有限公司 | Method for preparing vanadium pentoxide by using high-phosphorus high-calcium vanadium slag and recycling leachate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643045A (en) * | 2013-12-09 | 2014-03-19 | 攀钢集团研究院有限公司 | Treatment method of vanadium extraction tailings |
| CN105925813A (en) * | 2016-06-15 | 2016-09-07 | 江苏省冶金设计院有限公司 | Vanadium slag comprehensive treatment method and application thereof |
| CN106065435A (en) * | 2016-07-18 | 2016-11-02 | 江苏省冶金设计院有限公司 | A kind of method and system processing vanadium slag |
| CN106082151A (en) * | 2016-06-02 | 2016-11-09 | 江苏省冶金设计院有限公司 | A kind of method and system preparing yellow phosphorus |
| CN206721332U (en) * | 2017-03-24 | 2017-12-08 | 江苏省冶金设计院有限公司 | The system of vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction |
-
2017
- 2017-03-24 CN CN201710183963.3A patent/CN106756119A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103643045A (en) * | 2013-12-09 | 2014-03-19 | 攀钢集团研究院有限公司 | Treatment method of vanadium extraction tailings |
| CN106082151A (en) * | 2016-06-02 | 2016-11-09 | 江苏省冶金设计院有限公司 | A kind of method and system preparing yellow phosphorus |
| CN105925813A (en) * | 2016-06-15 | 2016-09-07 | 江苏省冶金设计院有限公司 | Vanadium slag comprehensive treatment method and application thereof |
| CN106065435A (en) * | 2016-07-18 | 2016-11-02 | 江苏省冶金设计院有限公司 | A kind of method and system processing vanadium slag |
| CN206721332U (en) * | 2017-03-24 | 2017-12-08 | 江苏省冶金设计院有限公司 | The system of vanadium-bearing slag of high calcium and high phosphor dephosphorization vanadium extraction |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114350964A (en) * | 2021-11-30 | 2022-04-15 | 攀钢集团研究院有限公司 | Method for preparing vanadium pentoxide by using high-phosphorus high-calcium vanadium slag and recycling leachate |
| CN114350964B (en) * | 2021-11-30 | 2024-01-26 | 攀钢集团研究院有限公司 | Method for preparing vanadium pentoxide by utilizing high-phosphorus high-calcium vanadium slag and recycling leaching liquid |
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