CN106834750A - The system and method for extracting vanadium from stone coal - Google Patents
The system and method for extracting vanadium from stone coal Download PDFInfo
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- CN106834750A CN106834750A CN201710179348.5A CN201710179348A CN106834750A CN 106834750 A CN106834750 A CN 106834750A CN 201710179348 A CN201710179348 A CN 201710179348A CN 106834750 A CN106834750 A CN 106834750A
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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
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/006—Starting from ores containing non ferrous metallic oxides
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/008—Use of special additives or fluxing agents
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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
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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
- C22B7/006—Wet processes
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- 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 invention discloses a kind of system and method for extracting vanadium from stone coal, the system includes：Bone coal pretreatment unit, with bone coal entrance, exhanst gas outlet and dries bone coal particle outlet；Iron liquid furnace, with ferrous material entrance, dries bone coal particle entrance, vanadium-bearing hot metal outlet and high-temperature flue gas outlet；Vanadium extraction device, with vanadium-bearing hot metal entrance, oxygen intake, half steel outlet and vanadium slag outlet；Vanadium slag processing unit, exports with vanadium slag entrance and vanadic anhydride.The system is using the carbon in bone coal as iron, barium oxide in fuel and reducing agent heating reduction bone coal, comprehensive recovery of iron, vanadium valuable metal, the content of vanadic anhydride is more than ten times of pentoxide content in bone coal in gained vanadium slag, alkaline consumption reduction by more than 75%, and bone coal ferriferous oxide, barium oxide mother-liquor can be recycled, extracting vanadium from stone coal production cost and energy resource consumption more than 10% are reduced.
Description
Technical field
The invention belongs to field of metallurgy, specifically, the present invention relates to the system and method for extracting vanadium from stone coal.
Background technology
Bone coal be it is a kind of it is carbon containing less, the low lambskin of calorific capacity, be again a kind of low-grade many metal mineral intergrowths, bone coal
The accompanying element being had found in resource kind up to more than 60, wherein can be formed industrial mineral deposit mainly vanadium, next to that molybdenum, uranium, phosphorus,
Silver etc..The bone coal resource of China is enriched very much, and total reserves rank first in the world.China is since the sixties in 20th century to stone
Coal vanadium extraction is studied, and the seventies starts industrial production, and the technique for being used is broadly divided into two big process routes, i.e. pyrogenic process roasting
Wet method process for extracting vanadium and Whote-wet method process for extracting vanadium.Thermal process sodium roasting-water logging or acid leaching process are sodium roasting
(NaCl)-water logging or acid leaching process.There are two major defects in this technique, one is to obtain V higher2O5Leaching rate, it has to
Consume a large amount of H2SO4, H in production2SO4Consumption is generally the 25%~40% of ore quality, and vanadium recovery is commonly 45%-
55%, making 50% or so navajoite resource cannot effectively utilize and waste；Two is the purification and impurity removal of acid leaching solution, Fe
(III) reduction and pH value adjustment etc. operation need to consume a large amount of medicaments, particularly ammoniacal liquor, so as to cause the generation of ammonia nitrogen waste water and
Process problem.Although climb steel achieves breakthrough in extracting vanadium from stone coal technology, significantly larger than domestic pharmaceutical industry industry common 40%~
50% index, the total recovery of vanadium averagely reaches 60.70%, and the vanadium resource for still having 40% is wasted.Whote-wet method process for extracting vanadium be by
Bone coal acidleach in the presence of normal pressure or temperature-pressure and oxidant, extraction, ion exchange are utilized by what acidleach was obtained containing vanadium solution
Vanadium extraction is carried out etc. technique, because content of vanadium is low in bone coal, treating capacity is big so that acid consumption is big, pollutant emission is high, vanadium production into
This height.
Therefore the technology of existing extracting vanadium from stone coal is further improved.
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 system and method for extracting vanadium from stone coal, and the system is using the carbon in bone coal as fuel and reducing agent
Iron, barium oxide in heating reduction bone coal, comprehensive recovery of iron, vanadium valuable metal, the content of vanadic anhydride is in gained vanadium slag
More than ten times of pentoxide content in bone coal, alkaline consumption reduction by more than 75%, and the reduction of bone coal ferriferous oxide, barium oxide is female
Liquid can be recycled, and reduce extracting vanadium from stone coal production cost and energy resource consumption more than 10%.
In one of the invention invention, the present invention proposes a kind of system of extracting vanadium from stone coal.Embodiments in accordance with the present invention,
The system includes：
Bone coal pretreatment unit, the bone coal pretreatment unit has bone coal entrance, exhanst gas outlet and dries bone coal particle
Outlet；
Iron liquid furnace, the iron liquid furnace has ferrous material entrance, dries bone coal particle entrance, vanadium-bearing hot metal outlet and high temperature
Exhanst gas outlet, the bone coal particle entrance that dries is connected with the bone coal particle outlet that dries, the high-temperature flue gas outlet and institute
Bone coal pretreatment unit is stated to be connected；
There is vanadium extraction device, the vanadium extraction device vanadium-bearing hot metal entrance, oxygen intake, half steel outlet and vanadium slag to export, institute
State vanadium-bearing hot metal entrance to be connected with vanadium-bearing hot metal outlet, the half steel outlet is connected with the ferrous material entrance；
There is vanadium slag processing unit, the vanadium slag processing unit vanadium slag entrance and vanadic anhydride to export, and the vanadium slag enters
Mouth is connected with vanadium slag outlet.
Thus, the system of extracting vanadium from stone coal according to embodiments of the present invention is pre-processed by by bone coal, can be by bone coal
The crystallization water, Free water and other volatile impurity remove, obtain drying bone coal particle, in this way, being conducive to improving follow-up vanadium slag
The content of middle vanadic anhydride；In iron liquid furnace, dry bone coal particle and melt rapidly at high temperature, period is dried in bone coal particle
Carbon with itself in ferriferous oxide and barium oxide occur reduction reaction, by di-iron trioxide be reduced to ferrous oxide, oxidation
Ferrous iron is reduced to iron, vanadic anhydride and is reduced to vanadium trioxide, while drying the carbon in bone coal particle and the iron content after melting
There is carburization reaction in material, generate saturated carbon, and the saturated carbon is discharged into the ferrous material after melting and dries the mixed of bone coal particle
Close in liquation, reduction reaction occurs with ferriferous oxide therein, barium oxide, the vanadium after being reduced sufficiently enters in mixed molten liquid
Obtain vanadium-bearing hot metal.The high-temperature flue gas obtained from iron liquid furnace can be used in bone coal pretreatment unit bone coal is dried and preheated
Treatment, advantageously reduces the energy consumption of bone coal pretreatment unit, improves the economy of system；In vanadium extraction device, vanadium-bearing hot metal exists
Vanadium slag more than 15wt% containing vanadic anhydride can be obtained in the presence of oxygen, be 10 of pentoxide content in bone coal with
On, reaching the purpose of Vanadium Concentrationin, the half steel of gained may return to be melted in iron liquid furnace, as when drying bone coal particles fuse in it
Ferriferous oxide and barium oxide melting and reducing mother liquor, in this way, be conducive to recycling the half steel obtained by vanadium extraction device, and can
The addition of ferrous material in iron liquid furnace is substantially reduced, the energy consumption of iron liquid furnace is reduced, the economy of system is further improved；In vanadium
In Slag treatment unit, the vanadic anhydride in vanadium slag can be proposed, while alkaline consumption reduction by more than 75%.Whole extracting vanadium from stone coal system
Production cost and energy resource consumption reduction by more than 10%.
In addition, the system of extracting vanadium from stone coal according to the above embodiment of the present invention, can also have following additional technology special
Levy：
In some embodiments of the invention, the bone coal pretreatment unit includes the breaker, the drying that are sequentially connected
Device and preheating device.Thus, be conducive to removing the moisture and impurity in bone coal, while accelerating to dry bone coal in follow-up iron liquid furnace
The burn-off rate of particle, so that the reaction speed in improving iron liquid furnace.
In some embodiments of the invention, the vanadium slag processing unit includes the first calciner, the water that are sequentially connected
Bath unit and the second calciner.Thus, be conducive to obtaining vanadic anhydride.
In another aspect of the invention, the present invention proposes a kind of system implementation bone coal using above-mentioned extracting vanadium from stone coal and carries
The method of vanadium, embodiments in accordance with the present invention, the method includes：
(1) bone coal is supplied into the bone coal pretreatment unit and is pre-processed, to remove the crystallization water and Free water,
Obtain drying bone coal particle；
(2) by ferrous material and it is described dry bone coal particle and supply melt process is carried out into the iron liquid furnace, so as to
To vanadium-bearing hot metal and high-temperature flue gas, and by the bone coal pretreatment unit in the high-temperature flue gas return to step (1)；
(3) supply the vanadium-bearing hot metal and oxygen carries out vanadium extraction treatment into the vanadium extraction device, to obtain vanadium slag
And half steel, and by the iron liquid furnace in the half steel return to step (2)；
(4) supply the vanadium slag carries out vanadium slag treatment into the vanadium slag processing unit, to obtain vanadic anhydride.
Thus, the method for extracting vanadium from stone coal according to embodiments of the present invention is pre-processed by by bone coal, can be by bone coal
The crystallization water, Free water and other volatile impurity remove, obtain drying bone coal particle, in this way, being conducive to improving follow-up vanadium slag
The content of middle vanadic anhydride；In iron liquid furnace, dry bone coal particle and melt rapidly at high temperature, period is dried in bone coal particle
Carbon with itself in ferriferous oxide and barium oxide occur reduction reaction, by di-iron trioxide be reduced to ferrous oxide, oxidation
Ferrous iron is reduced to iron, vanadic anhydride and is reduced to vanadium trioxide, while drying the carbon in bone coal particle and the iron content after melting
There is carburization reaction in material, generate saturated carbon, and the saturated carbon is discharged into the ferrous material after melting and dries the mixed of bone coal particle
Close in liquation, reduction reaction occurs with ferriferous oxide therein, barium oxide, the vanadium after being reduced sufficiently enters in mixed molten liquid
Obtain vanadium-bearing hot metal.The high-temperature flue gas obtained from iron liquid furnace can be used in bone coal pretreatment unit bone coal is dried and preheated
Treatment, advantageously reduces the energy consumption of bone coal pretreatment unit, improves overall economy；In vanadium extraction device, vanadium-bearing hot metal exists
Vanadium slag more than 15wt% containing vanadic anhydride can be obtained in the presence of oxygen, be ten times of pentoxide content in bone coal with
On, reach the purpose of enrichment vanadium slag, the half steel of gained may return to be melted in iron liquid furnace, as when drying bone coal particles fuse its
Interior ferriferous oxide and the mother liquor of barium oxide melting and reducing, in this way, be conducive to recycling the half steel obtained by vanadium extraction device, and
The addition of ferrous material in iron liquid furnace can be substantially reduced, the energy consumption of iron liquid furnace is reduced, overall economy is further improved；
In vanadium slag processing unit, the vanadic anhydride in vanadium slag can be proposed, while alkaline consumption reduction by more than 75%.Whole extracting vanadium from stone coal
The production cost of method and energy resource consumption reduction by more than 10%.
In some embodiments of the invention, in step (1), the pretreatment includes broken, dry and preheats successively
Treatment.Thus, be conducive to removing the moisture and impurity in bone coal, while drying the fusing of bone coal particle in accelerating follow-up iron liquid furnace
Speed, so that the reaction speed in improving iron liquid furnace.
In some embodiments of the invention, in step (1), the particle diameter dried in bone coal particle is 5~15mm
Accounting more than 80%.Thus, can further speed up dry the burn-off rate of bone coal particle in follow-up iron liquid furnace, so as to improve iron
Reaction speed in liquid furnace.
In some embodiments of the invention, in step (2), the matter for drying bone coal particle and the ferrous material
Amount is than being 1：(1~2).Thus, fully there is carburization reaction with the ferrous material after melting in the carbon that will can be dried in bone coal particle,
So as to the ferriferous oxide and barium oxide that will dry in bone coal particle are fully reduced, the purpose of Vanadium Concentrationin is reached.
In some embodiments of the invention, in step (3), the temperature of the vanadium extraction treatment is 1350~1420 Celsius
Degree.Thus, the efficiency of vanadium extraction treatment can be improved.
In some embodiments of the invention, in step (4), vanadium slag treatment include successively the first calcination process,
Soaking treatment and the second calcination process.Thus, be conducive to obtaining vanadic anhydride.
Additional aspect of the invention and advantage will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 is the system structure diagram of extracting vanadium from stone coal according to an embodiment of the invention；
Fig. 2 is the method flow schematic diagram of extracting vanadium from stone coal according to an embodiment of the invention；
Fig. 3 is the system structure diagram of the extracting vanadium from stone coal according to further embodiment of the present 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.
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, unless otherwise clearly restriction.For one of ordinary skill in the art
For, can as the case may be understand above-mentioned term concrete meaning in the present invention.
In one aspect of the invention, the present invention proposes a kind of system of extracting vanadium from stone coal.Embodiments in accordance with the present invention,
With reference to Fig. 1, the system includes：Bone coal pretreatment unit 100, iron liquid furnace 200, vanadium extraction device 300 and vanadium slag processing unit 400.
Embodiments in accordance with the present invention, bone coal pretreatment unit 100 has bone coal entrance 101, exhanst gas outlet 102 and dries
Bone coal particle outlet 103, and be suitable to be pre-processed bone coal, to remove the crystallization water and Free water, obtain flue gas and drying
Bone coal particle.Inventor find, pre-processed by by bone coal, can by the crystallization water in bone coal, Free water and other easily wave
Hair impurity removes, and obtains drying bone coal particle, in this way, being conducive to improving the content of vanadic anhydride in follow-up vanadium slag.
According to one embodiment of present invention, bone coal pretreatment unit includes the breaker, the drying device that are sequentially connected
And preheating device.Inventor had found, bone coal is carried out broken to be conducive to improving follow-up being dried bone coal and the pre-heat treatment
Efficiency, while quickening dries melting rate of the bone coal particle in iron liquid furnace；After bone coal is through drying and preheating, bone coal can be removed
In the crystallization water, Free water and other impurity that also volatilize, obtain temperature it is higher dry bone coal particle, in this way, advantageously reducing
To bringing the amount of impurity in iron liquid furnace into, so that the content of vanadic anhydride in follow-up gained vanadium slag is improved, while because drying bone coal
There is uniform temperature after particle is preheated, the energy consumption of iron liquid furnace can be reduced, so as to improve the economy of whole system.
According to still a further embodiment, the particle diameter for drying bone coal particle is not particularly restricted, art technology
Personnel can be selected according to actual needs, a specific embodiment of the invention, dry the particle diameter in bone coal particle
It can be the accounting more than 80% of 5~15mm.Inventor has found, if particle is too thin, influence production gas permeability, heat transfer is slow；And if
Particle is too thick, and speed of the heat from inside outer incoming particle is slow, low production efficiency.Thus, using the application particle size range
Grain can significantly improve productivity ratio, shorten the heat, reducing energy consumption.
Embodiments in accordance with the present invention, iron liquid furnace 200 have ferrous material entrance 201, dry bone coal particle entrance 202,
Vanadium-bearing hot metal exports 203 and high-temperature flue gas outlet 204, dries bone coal particle entrance 202 and dries the phase of bone coal particle outlet 103
Even, high-temperature flue gas outlet 204 is connected with bone coal pretreatment unit 100, and be suitable to by ferrous material with dry bone coal particle and carry out
High-temperature flue gas to obtain vanadium-bearing hot metal and high-temperature flue gas, and are back to above-mentioned bone coal pretreatment unit by melt process.Specifically
, in iron liquid furnace, when ferrous material fusing is warmed up to not less than 1500 degrees Celsius, bone coal particle will be dried and add iron liquid furnace
It is interior, dry bone coal particle and melt rapidly at high temperature, period dries the carbon in bone coal particle and the ferriferous oxide and vanadium in itself
There is reduction reaction in oxide, di-iron trioxide is reduced into ferrous oxide, ferrous oxide reduction for iron, vanadic anhydride are reduced
It is vanadium trioxide, while the carbon dried in bone coal particle occurs carburization reaction with the ferrous material after melting, generates saturated carbon,
During the saturated carbon is discharged into the ferrous material after melting and dries the mixed molten liquid of bone coal particle, with ferriferous oxide therein, vanadium
There is reduction reaction in oxide, vanadium after being reduced sufficiently is into obtaining vanadium-bearing hot metal in mixed molten liquid.When drying bone coal particle
Under 1550-1650 degrees Celsius it is completely melting down after, be incubated 45-75min.It is pre- that the high-temperature flue gas obtained from iron liquid furnace can be used for bone coal
Bone coal is dried and the pre-heat treatment in processing unit, advantageously reduces the energy consumption of bone coal pretreatment unit, improve system
Economy.Dry carbon in bone coal particle with itself in ferriferous oxide and barium oxide occur reduction reaction reaction equation it is main
Have：
C+Fe2O3=FeO+CO (1)
C+FeO=Fe+CO (2)
C+V2O5=V2O3+CO (3)
There is carburization reaction in the carbon dried in bone coal particle, generate saturated carbon, the saturated carbon with the ferrous material after melting
In the ferrous material being discharged into after melting and the mixed molten liquid for drying bone coal particle, sent out with ferriferous oxide therein, barium oxide
The reaction equation of raw reduction reaction mainly has：
[C]+[Fe]=[Fe3C] (4)
[C]+(FeO)=[Fe]+CO (5)
[C]+(V2O3)=(VO)+CO (6)
C+ [VO]=[V]+CO (7)
[C]+(SiO2)=[Si]+CO (8)
According to one embodiment of present invention, bone coal particle is dried to be not particularly restricted with the mass ratio of ferrous material,
Those skilled in the art can be selected according to actual needs, a specific embodiment of the invention, dry bone coal
Grain can be 1 with the mass ratio of ferrous material：(1~2).Inventor has found, if it is too low to dry bone coal grain mixture ratio, ferrous material
Proportioning is too high, then vanadium-bearing hot metal content of vanadium is low, and vanadium extraction cost increases；And if it is too high to dry bone coal grain mixture ratio, causes carbon to provide
Source wastes, and dries the reduction of bone coal particles fuse speed, barium oxide reaction speed reduction, so as to cause production efficiency to reduce.
There is embodiments in accordance with the present invention, vanadium extraction device 300 vanadium-bearing hot metal entrance 301, oxygen intake 302, half steel to go out
Mouth 303 and vanadium slag outlet 304, vanadium-bearing hot metal entrance 301 are connected with vanadium-bearing hot metal outlet 203, and half steel exports 303 and ferrous material
Entrance 201 is connected, and is suitable to for vanadium-bearing hot metal and oxygen to carry out vanadium extraction treatment, to obtain vanadium slag and half steel, and half steel is returned
Return in above-mentioned iron liquid furnace.Specifically, in vanadium extraction device, vanadium-bearing hot metal can be obtained containing vanadic anhydride in the presence of oxygen
The vanadium slag of more than 15wt%, is more than ten times of pentoxide content in bone coal, reaches the purpose of Vanadium Concentrationin, the half steel of gained
May return to melt in iron liquid furnace, as ferriferous oxide when drying bone coal particles fuse in it and barium oxide melting and reducing
Mother liquor, in this way, being conducive to recycling the half steel obtained by vanadium extraction device, and can substantially reduce the addition of ferrous material in iron liquid furnace
Amount, reduces the energy consumption of iron liquid furnace, further improves the economy of system.Vanadium-bearing hot metal mainly has with the reaction equation of oxygen reaction：
[V]+[O]=V2O3 (9)
[Fe]+[O]=(FeO) (10)
[O]+[Si]=(SiO2) (11)
[C]+[O]=CO (12)
According to one embodiment of present invention, the condition of vanadium extraction treatment is not particularly restricted, and those skilled in the art can
To be selected according to actual needs, a specific embodiment of the invention, vanadium extraction temperature can be controlled in 1350-1420
Degree Celsius, oxygen blast 5-8min.Inventor has found that, when vanadium extraction temperature is too high, slag is thinning, is unfavorable for slag sluicing system；But vanadium extraction temperature
Spend low, reaction speed is slow, can not meet production requirement, low production efficiency.When oxygen blow duration is too short, vanadium reduction is incomplete, meeting
Vanadium resource is caused to waste；And oxygen blow duration is long, metallic iron is oxidized to the increase of ferrous oxide amount, and the amount that iron enters vanadium slag increases,
Iron resource can be caused to waste, reduce the content of vanadic anhydride in vanadium slag, cause the cost of vanadium slag production unit vanadic anhydride
Increase.
Embodiments in accordance with the present invention, vanadium slag processing unit 400 has vanadium slag entrance 401 and vanadic anhydride outlet 402,
Vanadium slag entrance 401 is connected with vanadium slag outlet 304, and is suitable to for vanadium slag to carry out vanadium slag treatment, to obtain vanadic anhydride.Invention
People has found, in vanadium slag processing unit, can propose the vanadic anhydride in vanadium slag, while alkaline consumption reduction by more than 75%.
According to one embodiment of present invention, vanadium slag processing unit is not particularly restricted, and those skilled in the art can be with
Selected according to actual needs, a specific embodiment of the invention, vanadium slag processing unit can include being sequentially connected
The first calciner, water immersion and the second calciner.Specifically, 750-900 degrees Celsius of sintering temperature, time 1-2h,
Sintering temperature is too high or during overlong time, part vanadium easily generates the complicated thing phase that can not be leached, while increasing energy resource consumption；And roast
When burning too low temperature or too short time, vanadic anhydride changes into sodium vanadate not exclusively, causes vanadium recovery low；By vanadium after roasting
To 60-100 mesh, granularity is excessively thick, and vanadium is difficult to leach, meticulous for slag fine grinding, then fine grinding cost increases, it is difficult to economic production.Will be thin
Vanadium slag after mill mixes with water, solid-to-liquid ratio 1：(2-5), is heated to 70-95 degrees Celsius of leaching, and vanadium is with water insoluble hydration
Thing form is present, and is filtrated to get metaborate monohydrate vanadium.When vanadium slag is with that can mix, if solid-to-liquid ratio is too low, it is low that vanadium enters liquid velocity, leaches
Rate is low, causes vanadium recovery low；And if solid-to-liquid ratio is excessive, water consume increases, and causes water resource waste.During water logging, if temperature is too high,
Water can volatilize as water vapor, cause water consume to increase, and if temperature is too low, water logging thermodynamics of reactions condition is poor, vanadium water
Leaching rate is low, and vanadium recovery is low.The hydration vanadium of above-mentioned gained goes water to obtain product vanadic anhydride in roaster.
The system of extracting vanadium from stone coal according to embodiments of the present invention is pre-processed by by bone coal, can be by the crystallization in bone coal
Water, Free water and other volatile impurity remove, and obtain drying bone coal particle, in this way, being conducive to improving five oxygen in follow-up vanadium slag
Change the content of two vanadium；In iron liquid furnace, dry bone coal particle and melt rapidly at high temperature, period dry carbon in bone coal particle with
There is reduction reaction in ferriferous oxide and barium oxide in itself, di-iron trioxide is reduced into ferrous oxide, ferrous oxide also
Originally it was that iron, vanadic anhydride are reduced to vanadium trioxide, while the ferrous material hair after drying carbon in bone coal particle and melting
Raw carburization reaction, generates saturated carbon, and the saturated carbon is discharged into the ferrous material after melting and dries the mixed molten liquid of bone coal particle
In, there is reduction reaction with ferriferous oxide therein, barium oxide, vanadium after being reduced sufficiently is into being contained in mixed molten liquid
Vanadium-containing molten iron.The high-temperature flue gas obtained from iron liquid furnace can be used to be dried bone coal in bone coal pretreatment unit and the pre-heat treatment,
The energy consumption of bone coal pretreatment unit is advantageously reduced, the economy of system is improved；In vanadium extraction device, vanadium-bearing hot metal is in oxygen
The lower vanadium slag that can be obtained more than 15wt% containing vanadic anhydride of effect, is more than ten times of pentoxide content in bone coal, is reached
To the purpose of Vanadium Concentrationin, the half steel of gained may return to be melted in iron liquid furnace, as iron when drying bone coal particles fuse in it
The mother liquor of oxide and barium oxide melting and reducing, in this way, be conducive to recycling the half steel obtained by vanadium extraction device, and can be notable
The addition of ferrous material in iron liquid furnace is reduced, the energy consumption of iron liquid furnace is reduced, the economy of system is further improved；At vanadium slag
In reason unit, the vanadic anhydride in vanadium slag can be proposed, while alkaline consumption reduction by more than 75%.The life of whole extracting vanadium from stone coal system
Produce cost and energy resource consumption reduction by more than 10%.
In another aspect of the invention, the present invention proposes a kind of system implementation bone coal using above-mentioned extracting vanadium from stone coal and carries
The method of vanadium.Embodiments in accordance with the present invention, with reference to Fig. 2, the method includes：
S100：Bone coal is supplied into bone coal pretreatment unit and is pre-processed
In the step, bone coal is supplied into bone coal pretreatment unit and is pre-processed, to remove the crystallization water and freedom
Water, obtains flue gas and dries bone coal particle.Inventor find, pre-processed by by bone coal, can by the crystallization water in bone coal,
Free water and other volatile impurity remove, and obtain drying bone coal particle, in this way, being conducive to improving five oxidations two in follow-up vanadium slag
The content of vanadium.
According to one embodiment of present invention, pretreatment includes broken, dry and the pre-heat treatment successively.Inventor's discovery,
By bone coal carry out it is broken be conducive to improving it is follow-up bone coal is dried and the pre-heat treatment efficiency, while quickening dries bone coal
Melting rate of the grain in iron liquid furnace；Bone coal can remove bone coal after from the high temperature flue gas drying in iron liquid furnace and preheating
In the crystallization water, Free water and other impurity that also volatilize, obtain temperature it is higher dry bone coal particle, in this way, advantageously reducing
To bringing the amount of impurity in iron liquid furnace into, so that the content of vanadic anhydride in follow-up gained vanadium slag is improved, while because drying bone coal
There is uniform temperature after particle is preheated, the energy consumption of iron liquid furnace can be reduced, so as to improve the economy of whole system.
According to still a further embodiment, the particle diameter for drying bone coal particle is not particularly restricted, art technology
Personnel can be selected according to actual needs, a specific embodiment of the invention, dry the particle diameter in bone coal particle
It can be the accounting more than 80% of 5~15mm.Inventor has found, if particle is too thin, influence production gas permeability, heat transfer is slow；And if
Particle is too thick, and speed of the heat from inside outer incoming particle is slow, low production efficiency.Thus, using the application particle size range
Grain can significantly improve productivity ratio, shorten the heat, reducing energy consumption.
S200：By ferrous material and dry bone coal particle and supply into iron liquid furnace and carry out melt process
In the step, by ferrous material and dry bone coal particle and supply into iron liquid furnace and carry out melt process, to obtain
Vanadium-bearing hot metal and high-temperature flue gas, and high-temperature flue gas are returned into the bone coal pretreatment unit in S100.Specifically, in iron liquid furnace,
When ferrous material fusing is warmed up to not less than 1500 degrees Celsius, bone coal particle will be dried and added in iron liquid furnace, dry bone coal
Grain rapid fusing at high temperature, period dry carbon in bone coal particle with itself in ferriferous oxide and barium oxide reduce
Reaction, ferrous oxide, ferrous oxide reduction are reduced to for iron, vanadic anhydride are reduced to vanadium trioxide by di-iron trioxide,
There is carburization reaction in the carbon dried simultaneously in bone coal particle, generate saturated carbon, the saturation carbon emissions with the ferrous material after melting
Ferrous material after to melting and dry the mixed molten liquid of bone coal particle, occur also with ferriferous oxide therein, barium oxide
Original reaction, vanadium after being reduced sufficiently is into obtaining vanadium-bearing hot metal in mixed molten liquid.Taken the photograph in 1550-1650 when bone coal particle is dried
Under family name's degree completely it is melting down after, be incubated 45-75min.The high-temperature flue gas obtained from iron liquid furnace can be used for right in bone coal pretreatment unit
Bone coal is dried and the pre-heat treatment, advantageously reduces the energy consumption of bone coal pretreatment unit, improves the economy of system.Dry stone
Carbon in coal particle with itself in ferriferous oxide and barium oxide reaction equation that reduction reaction occurs mainly have：
C+Fe2O3=FeO+CO (1)
C+FeO=Fe+CO (2)
C+V2O5=V2O3+CO (3)
There is carburization reaction in the carbon dried in bone coal particle, generate saturated carbon, the saturated carbon with the ferrous material after melting
In the ferrous material being discharged into after melting and the mixed molten liquid for drying bone coal particle, sent out with ferriferous oxide therein, barium oxide
The reaction equation of raw reduction reaction mainly has：
[C]+[Fe]=[Fe3C] (4)
[C]+(FeO)=[Fe]+CO (5)
[C]+(V2O3)=(VO)+CO (6)
C+ [VO]=[V]+CO (7)
[C]+(SiO2)=[Si]+CO (8)
According to one embodiment of present invention, bone coal particle is dried to be not particularly restricted with the mass ratio of ferrous material,
Those skilled in the art can be selected according to actual needs, a specific embodiment of the invention, dry bone coal
Grain can be 1 with the mass ratio of ferrous material：(1~2).Inventor has found, if it is too low to dry bone coal grain mixture ratio, ferrous material
Proportioning is too high, then vanadium-bearing hot metal content of vanadium is low, and vanadium extraction cost increases；And if it is too high to dry bone coal grain mixture ratio, causes carbon to provide
Source wastes, and dries the reduction of bone coal particles fuse speed, barium oxide reaction speed reduction, so as to cause production efficiency to reduce.
S300：Vanadium-bearing hot metal and oxygen are supplied carries out vanadium extraction treatment into vanadium extraction device
In the step, vanadium-bearing hot metal and oxygen are supplied carries out vanadium extraction treatment into vanadium extraction device, so as to obtain vanadium slag and
Half steel, and half steel is returned into the iron liquid furnace in S200.Specifically, in vanadium extraction device, vanadium-bearing hot metal can in the presence of oxygen
Vanadium slag more than 15wt% containing vanadic anhydride is obtained, is more than ten times of pentoxide content in bone coal, reach Vanadium Concentrationin
Purpose, the half steel of gained may return to be melted in iron liquid furnace, as ferriferous oxide when drying bone coal particles fuse in it and
The mother liquor of barium oxide melting and reducing, in this way, being conducive to recycling the half steel obtained by vanadium extraction device, and can substantially reduce iron bath
The addition of ferrous material in stove, reduces the energy consumption of iron liquid furnace, further improves the economy of system.Vanadium-bearing hot metal is anti-with oxygen
The reaction equation answered mainly has：
[V]+[O]=V2O3 (9)
[Fe]+[O]=(FeO) (10)
[O]+[Si]=(SiO2) (11)
[C]+[O]=CO (12)
According to one embodiment of present invention, the condition of vanadium extraction treatment is not particularly restricted, and those skilled in the art can
To be selected according to actual needs, a specific embodiment of the invention, vanadium extraction temperature can be controlled in 1350-1420
Degree Celsius, oxygen blast 5-8min.Inventor has found that, when vanadium extraction temperature is too high, slag is thinning, is unfavorable for slag sluicing system；But vanadium extraction temperature
Spend low, reaction speed is slow, can not meet production requirement, low production efficiency.When oxygen blow duration is too short, vanadium reduction is incomplete, meeting
Vanadium resource is caused to waste；And oxygen blow duration is long, metallic iron is oxidized to the increase of ferrous oxide amount, and the amount that iron enters vanadium slag increases,
Iron resource can be caused to waste, reduce the content of vanadic anhydride in vanadium slag, cause the cost of vanadium slag production unit vanadic anhydride
Increase.
S400：Vanadium slag is supplied carries out vanadium slag treatment into vanadium slag processing unit
In the step, vanadium slag is supplied carries out vanadium slag treatment into vanadium slag processing unit, to obtain vanadic anhydride.Hair
A person of good sense has found, in vanadium slag processing unit, can propose the vanadic anhydride in vanadium slag, while alkaline consumption reduction by more than 75%.
According to one embodiment of present invention, vanadium slag treatment is not particularly restricted, and those skilled in the art can basis
Be actually needed and selected, a specific embodiment of the invention, vanadium slag treatment can include successively the first calcination process,
Soaking treatment and the second calcination process.Specifically, 750-900 degrees Celsius of sintering temperature, time 1-2h, sintering temperature it is too high or when
Between it is long when, part vanadium easily generates the complicated thing phase that can not be leached, at the same increase energy resource consumption；And sintering temperature is too low or the time
When too short, vanadic anhydride changes into sodium vanadate not exclusively, causes vanadium recovery low；By vanadium slag fine grinding to 60-100 after roasting
Mesh, granularity is excessively thick, and vanadium is difficult to leach, meticulous, then fine grinding cost increases, it is difficult to economic production.By vanadium slag and water after fine grinding
Mixing, solid-to-liquid ratio 1：(2-5), is heated to 70-95 degrees Celsius of leaching, and vanadium exists with water insoluble hydrate forms, mistake
Filter obtains metaborate monohydrate vanadium.When vanadium slag is with that can mix, if solid-to-liquid ratio is too low, vanadium enters that liquid velocity is low, and leaching rate is low, causes vanadium to return
Yield is low；And if solid-to-liquid ratio is excessive, water consume increases, and causes water resource waste.During water logging, if temperature is too high, water can be with vapor
Form volatilization, cause water consume to increase, and if temperature is too low, water logging thermodynamics of reactions condition is poor, and vanadium water logging rate is low, vanadium recovery
Rate is low.The hydration vanadium of above-mentioned gained goes water to obtain product vanadic anhydride in roaster.
The method of extracting vanadium from stone coal according to embodiments of the present invention is pre-processed by by bone coal, can be by the crystallization in bone coal
Water, Free water and other volatile impurity remove, and obtain drying bone coal particle, in this way, being conducive to improving five oxygen in follow-up vanadium slag
Change the content of two vanadium；In iron liquid furnace, dry bone coal particle and melt rapidly at high temperature, period dry carbon in bone coal particle with
There is reduction reaction in ferriferous oxide and barium oxide in itself, di-iron trioxide is reduced into ferrous oxide, ferrous oxide also
Originally it was that iron, vanadic anhydride are reduced to vanadium trioxide, while the ferrous material hair after drying carbon in bone coal particle and melting
Raw carburization reaction, generates saturated carbon, and the saturated carbon is discharged into the ferrous material after melting and dries the mixed molten liquid of bone coal particle
In, there is reduction reaction with ferriferous oxide therein, barium oxide, vanadium after being reduced sufficiently is into being contained in mixed molten liquid
Vanadium-containing molten iron.The high-temperature flue gas obtained from iron liquid furnace can be used to be dried bone coal in bone coal pretreatment unit and the pre-heat treatment,
The energy consumption of bone coal pretreatment unit is advantageously reduced, overall economy is improved；In vanadium extraction device, vanadium-bearing hot metal is in oxygen
The lower vanadium slag that can be obtained more than 15wt% containing vanadic anhydride of effect, is more than ten times of pentoxide content in bone coal, is reached
To the purpose of enrichment vanadium slag, the half steel of gained may return to be melted in iron liquid furnace, as when drying bone coal particles fuse in it
The mother liquor of ferriferous oxide and barium oxide melting and reducing, in this way, being conducive to recycling the half steel obtained by vanadium extraction device, and can show
The addition for reducing ferrous material in iron liquid furnace is write, the energy consumption of iron liquid furnace is reduced, overall economy is further improved；In vanadium slag
In processing unit, the vanadic anhydride in vanadium slag can be proposed, while alkaline consumption reduction by more than 75%.The method of whole extracting vanadium from stone coal
Production cost and energy resource consumption reduction by more than 10%.
Below with reference to specific embodiment, present invention is described, it is necessary to explanation, these embodiments are only description
Property, and the present invention is limited never in any form.
Embodiment 1
With reference to Fig. 3, bone coal is crushed to particle diameter 5-15mm and accounts for more than 80% (content of bone coal constituent and individual composition is shown in Table
1) iron liquid furnace, is delivered to after drying and preheating, the temperature of bone coal particle is dried after preheating for 500 degrees Celsius, preheating thermal source comes from
The high-temperature flue gas of iron liquid furnace, when ferrous material (the pig iron or steel scrap) fusing in iron liquid furnace is warmed up to 1500 degrees Celsius, will be pre-
The bone coal particle that dries after heat is uniformly added into iron liquid furnace thorax by blanking bin and tremie pipe, dries bone coal particle and ferrous material
Feed ratio be 1：2, dry bone coal particle and melted rapidly in iron liquid furnace, and dry bone coal particles fuse temperature-rise period
In, drying the carbon in bone coal particle and ferriferous oxide and barium oxide in itself occur reduction reaction, reaction equation is：
C+Fe2O3=FeO+CO (1)
C+FeO=Fe+CO (2)
C+V2O5=V2O3+CO (3)
Meanwhile, there is carburization reaction in the carbon dried in bone coal particle, generate saturated carbon with the ferrous material after melting, and this is satisfied
With the ferrous material after carbon emissions to melting and dry the mixed molten liquid of bone coal particle, aoxidized with ferriferous oxide therein, vanadium
There is reduction reaction in thing, reaction equation is：
[C]+[Fe]=[Fe3C] (4)
[C]+(FeO)=[Fe]+CO (5)
[C]+(V2O3)=(VO)+CO (6)
C+ [VO]=[V]+CO (7)
[C]+(SiO2)=[Si]+CO (8)
Vanadium after reduction enters in reacted mixed molten liquid, obtains vanadium-bearing hot metal, the main constituents of vanadium-bearing hot metal
And the content of each composition is shown in Table 2.When dry bone coal particle under 1550 degrees Celsius completely it is melting down after, be incubated 60min.From iron liquid furnace
The high-temperature flue gas for obtaining can be used to be dried bone coal in bone coal pretreatment unit and the pre-heat treatment.Vanadium-bearing hot metal is come out of the stove into iron
Water bag, ladle is had bad luck to vanadium extraction device (vanadium extraction stove), and vanadium extraction temperature control is in 1380 degrees Celsius, oxygen blow duration 7min, containing vanadium
Molten iron can obtain the vanadium slag containing vanadic anhydride in the presence of oxygen, and oxygen blast process mainly occurs following reaction：
[V]+[O]=V2O3 (9)
[Fe]+[O]=(FeO) (10)
[O]+[Si]=(SiO2) (11)
[C]+[O]=CO (12)
Oxygen blast terminates, and obtains half steel and vanadium slag, and half steel is come out of the stove, and the half steel of gained may return to be melted in iron liquid furnace, be used as
The mother liquor of ferriferous oxide and barium oxide melting and reducing when drying bone coal particles fuse in it, vanadium slag remains in vanadium extraction device
In (vanadium extraction stove), two stoves go out a vanadium slag.The content of the main component of vanadium slag and each composition is shown in Table 3；The vanadium slag feeding vanadium for being gone out
Slag treatment unit, carries out being calcined-water logging-roasting successively, obtains sheet V2O5.The content of vanadic anhydride is stone in gained vanadium slag
13 times of pentoxide content in coal, and alkaline consumption reduction by 75%, the energy consumption reduction by 10% of whole extracting vanadium from stone coal.
The bone coal main component of table 1 and each component content (wt%)
| Fe | MgO | CaO | C | ∑ | ||||
| 1.247 | 5.804 | 6.76 | 47.4 | 1.768 | 8.34 | 11.65 | 12-25 | 100 |
The vanadium-bearing hot metal main component of table 2 and each component content (wt%)
| V | Si | C | S |
| 0.315 | 0.44 | 4.15 | 1.22 |
The vanadium slag main component of table 3 and each component content (wt%)
| TFe | CaO | ||
| 16.86 | 32.55 | 38.12 | 5.28 |
Embodiment 2
With reference to Fig. 3, bone coal is crushed to particle diameter 5-10mm and accounts for more than 80% (content of bone coal constituent and individual composition is shown in Table
1) iron liquid furnace, is delivered to after drying and preheating, the temperature of bone coal particle is dried after preheating for 500 degrees Celsius, preheating thermal source comes from
The high-temperature flue gas of iron liquid furnace, when ferrous material (the pig iron or steel scrap) fusing in iron liquid furnace is warmed up to 1550 degrees Celsius, will be pre-
The bone coal particle that dries after heat is uniformly added into iron liquid furnace thorax by blanking bin and tremie pipe, dries bone coal particle and ferrous material
Feed ratio be 1：1, dry bone coal particle and melted rapidly in iron liquid furnace, and dry bone coal particles fuse temperature-rise period
In, drying the carbon in bone coal particle and ferriferous oxide and barium oxide in itself occur reduction reaction, reaction equation is：
C+Fe2O3=FeO+CO (1)
C+FeO=Fe+CO (2)
C+V2O5=V2O3+CO (3)
Meanwhile, there is carburization reaction in the carbon dried in bone coal particle, generate saturated carbon with the ferrous material after melting, and this is satisfied
With the ferrous material after carbon emissions to melting and dry the mixed molten liquid of bone coal particle, aoxidized with ferriferous oxide therein, vanadium
There is reduction reaction in thing, reaction equation is：
[C]+[Fe]=[Fe3C] (4)
[C]+(FeO)=[Fe]+CO (5)
[C]+(V2O3)=(VO)+CO (6)
C+ [VO]=[V]+CO (7)
[C]+(SiO2)=[Si]+CO (8)
Vanadium after reduction enters in reacted mixed molten liquid, obtains vanadium-bearing hot metal, the main constituents of vanadium-bearing hot metal
And the content of each composition is shown in Table 4.When dry bone coal particle under 1600 degrees Celsius completely it is melting down after, be incubated 60min.From iron liquid furnace
The high-temperature flue gas for obtaining can be used to be dried bone coal in bone coal pretreatment unit and the pre-heat treatment.Vanadium-bearing hot metal is come out of the stove into iron
Water bag, ladle is had bad luck to vanadium extraction device (vanadium extraction stove), and vanadium extraction temperature control is in 1420 degrees Celsius, oxygen blow duration 5min, containing vanadium
Molten iron can obtain the vanadium slag containing vanadic anhydride in the presence of oxygen, and oxygen blast process mainly occurs following reaction：
[V]+[O]=V2O3 (9)
[Fe]+[O]=(FeO) (10)
[O]+[Si]=(SiO2) (11)
[C]+[O]=CO (12)
Oxygen blast terminates, and obtains half steel and vanadium slag, and half steel is come out of the stove, and the half steel of gained may return to be melted in iron liquid furnace, be used as
The mother liquor of ferriferous oxide and barium oxide melting and reducing when drying bone coal particles fuse in it, vanadium slag remains in vanadium extraction device
In (vanadium extraction stove), two stoves go out a vanadium slag.The content of the main component of vanadium slag and each composition is shown in Table 5；The vanadium slag feeding vanadium for being gone out
Slag treatment unit, carries out being calcined-water logging-roasting successively, obtains sheet V2O5.The content of vanadic anhydride is stone in gained vanadium slag
18 times of pentoxide content in coal, and alkaline consumption reduction by 82%, the energy consumption reduction by 13% of whole extracting vanadium from stone coal.
The vanadium-bearing hot metal main component of table 4 and each component content (wt%)
| V | Si | C | S |
| 0.599 | 0.49 | 3.97 | 0.20 |
The vanadium slag main component of table 5 and each component content (wt%)
| TFe | CaO | ||
| 21.86 | 28.72 | 35.69 | 4.66 |
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 with office
Combined in an appropriate manner in one or more embodiments or example.Additionally, in the case of not conflicting, the skill of this area
Art personnel can be tied the feature of the different embodiments or example described in this specification and different embodiments or example
Close and combine.
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 (9)
1. a kind of system of extracting vanadium from stone coal, it is characterised in that including：
Bone coal pretreatment unit, the bone coal pretreatment unit has bone coal entrance, exhanst gas outlet and dries bone coal particle outlet；
Iron liquid furnace, the iron liquid furnace has ferrous material entrance, dries bone coal particle entrance, vanadium-bearing hot metal outlet and high-temperature flue gas
Outlet, the bone coal particle entrance that dries is connected with the bone coal particle outlet that dries, the high-temperature flue gas outlet and the stone
Coal pretreatment unit is connected；
There is vanadium extraction device, the vanadium extraction device vanadium-bearing hot metal entrance, oxygen intake, half steel outlet and vanadium slag to export, described to contain
Vanadium iron water inlet is connected with vanadium-bearing hot metal outlet, and the half steel outlet is connected with the ferrous material entrance；
There is vanadium slag processing unit, the vanadium slag processing unit vanadium slag entrance and vanadic anhydride to export, the vanadium slag entrance with
The vanadium slag outlet is connected.
2. system according to claim 1, it is characterised in that it is broken that the bone coal pretreatment unit includes being sequentially connected
Device, drying device and preheating device.
3. system according to claim 1 and 2, it is characterised in that the vanadium slag processing unit include being sequentially connected the
One calciner, water immersion and the second calciner.
4. the method that the system any one of a kind of use claim 1-3 implements extracting vanadium from stone coal, it is characterised in that bag
Include：
(1) bone coal is supplied into the bone coal pretreatment unit and is pre-processed, to remove the crystallization water and Free water, obtained
Flue gas and dry bone coal particle；
(2) by ferrous material and it is described dry bone coal particle and supply melt process is carried out into the iron liquid furnace, to be contained
Vanadium-containing molten iron and high-temperature flue gas, and by the bone coal pretreatment unit in the high-temperature flue gas return to step (1)；
(3) supply the vanadium-bearing hot metal and oxygen carries out vanadium extraction treatment into the vanadium extraction device, to obtain vanadium slag and half
Steel, and by the iron liquid furnace in the half steel return to step (2)；
(4) supply the vanadium slag carries out vanadium slag treatment into the vanadium slag processing unit, to obtain vanadic anhydride.
5. method according to claim 4, it is characterised in that in step (1), the pretreatment include successively it is broken,
Dry and the pre-heat treatment.
6. the method according to claim 4 or 5, it is characterised in that in step (1), it is described to dry bone coal particle
Particle diameter is the accounting more than 80% of 5~15mm.
7. the method according to any one of claim 4-6, it is characterised in that described to dry bone coal in step (2)
Grain is 1 with the mass ratio of the ferrous material：(1~2).
8. the method according to any one of claim 4-7, it is characterised in that in step (3), the vanadium extraction treatment
Temperature is 1350~1420 degrees Celsius.
9. the method according to any one of claim 4-8, it is characterised in that in step (4), the vanadium slag treatment according to
It is secondary including the first calcination process, Soaking treatment and the second calcination process.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115198115A (en) * | 2022-06-24 | 2022-10-18 | 岳庆丰 | Method for preparing rock wool and vanadium-containing pig iron by smelting stone coal vanadium ore in blast furnace |
| CN115627350A (en) * | 2022-12-22 | 2023-01-20 | 北京科技大学 | Method for combining high-phosphorus iron ore and stone coal |
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| CN103966424A (en) * | 2014-05-23 | 2014-08-06 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for extracting vanadium from vanadium slag through blank roasting |
| CN105039626A (en) * | 2015-09-14 | 2015-11-11 | 北京科技大学 | Vanadium slag preparation method |
| CN206607300U (en) * | 2017-03-23 | 2017-11-03 | 江苏省冶金设计院有限公司 | The system of extracting vanadium from stone coal |
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| CN102321801A (en) * | 2011-10-08 | 2012-01-18 | 南通汉瑞实业有限公司 | Method for extracting vanadium from alkaline leaching solution containing vanadium stone coal |
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| CN115627350A (en) * | 2022-12-22 | 2023-01-20 | 北京科技大学 | Method for combining high-phosphorus iron ore and stone coal |
| CN115627350B (en) * | 2022-12-22 | 2023-04-18 | 北京科技大学 | Method for combining high-phosphorus iron ore and stone coal |
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