CN206607299U - The system of extracting vanadium from stone coal - Google Patents
The system of extracting vanadium from stone coal Download PDFInfo
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- CN206607299U CN206607299U CN201720293502.7U CN201720293502U CN206607299U CN 206607299 U CN206607299 U CN 206607299U CN 201720293502 U CN201720293502 U CN 201720293502U CN 206607299 U CN206607299 U CN 206607299U
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Abstract
The utility model discloses the system of extracting vanadium from stone coal, including：Bone coal pretreatment unit, with bone coal entrance, exhanst gas outlet and dry bone coal particle outlet；Slag former pretreatment unit, with slag former entrance, water out and dry slag former particle outlet；Iron liquid furnace, with ferrous material entrance, dries bone coal particle entrance, dry slag former 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, is exported with vanadium slag entrance and vanadic anhydride.The system can comprehensive recovery of iron, vanadium valuable metal, slag former can reduce the content of objectionable impurities sulphur, phosphorus in vanadium-bearing hot metal simultaneously, 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, reduction extracting vanadium from stone coal production cost and energy consumption more than 10%.
Description
Technical field
The utility model belongs to field of metallurgy, specifically, the system that the utility model is related to 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 a kind of low-grade many metal mineral intergrowths, bone coal again
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 1960s to stone
Coal vanadium extraction is studied, and starts industrial production the seventies, and used technique is broadly divided into two big process routes, i.e. pyrogenic process and is calcined
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 higher V2O5Leaching 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 be the purification and impurity removal of acid leaching solution, Fe
(III) reduction and pH value adjustment etc. process need to consume a large amount of medicaments, particularly ammoniacal liquor so that cause ammonia nitrogen waste water generation 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.
Utility model content
The utility model is intended at least solve one of technical problem in correlation technique to a certain extent.Therefore, this reality
It is to propose a kind of system of extracting vanadium from stone coal with a new purpose, the system uses the carbon in bone coal to be used as fuel and reduction
Iron, barium oxide, comprehensive recovery of iron, vanadium valuable metal, while slag former can be reduced in vanadium-bearing hot metal in agent heating reduction bone coal
In the content of objectionable impurities sulphur, phosphorus, gained vanadium slag the content of vanadic anhydride be ten times of pentoxide content in bone coal with
On, alkaline consumption reduces by more than 75%, and bone coal ferriferous oxide, barium oxide mother-liquor can be recycled, and reduces extracting vanadium from stone coal
Production cost and energy resource consumption more than 10%.
In a utility model of the present utility model, the utility model proposes a kind of system of extracting vanadium from stone coal.According to this
The embodiment of utility model, 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；
Slag former pretreatment unit, the slag former pretreatment unit has slag former entrance, water out and dries slag making
Agent particle outlet；
There is iron liquid furnace, the iron liquid furnace ferrous material entrance, dry bone coal particle entrance, dry slag former particle to enter
Mouth, vanadium-bearing hot metal outlet and high-temperature flue gas outlet, the dry bone coal particle entrance are connected with the dry bone coal particle outlet,
The dry slag former particle entrance is connected with the dry slag former particle outlet, the high-temperature flue gas outlet and the bone coal
At least one of pretreatment unit, described slag former pretreatment unit are connected；
Vanadium extraction device, the vanadium extraction device has vanadium-bearing hot metal entrance, oxygen intake, half steel outlet and vanadium slag outlet, institute
State vanadium-bearing hot metal entrance with vanadium-bearing hot metal outlet to be connected, the half steel outlet is connected with the ferrous material entrance；
Vanadium slag processing unit, the vanadium slag processing unit has vanadium slag entrance and vanadic anhydride outlet, and the vanadium slag enters
Mouth is connected with vanadium slag outlet.
Thus, according to the system of the extracting vanadium from stone coal of the utility model embodiment by by bone coal, slag former respectively in bone coal
Pre-processed in pretreatment unit and slag former pretreatment unit, can be by the water in bone coal and slag former and other are volatile miscellaneous
Matter is removed, and obtains drying bone coal particle and dries slag former particle, in this way, being conducive to improving vanadic anhydride in follow-up vanadium slag
Content；In iron liquid furnace, the sieve and silica-sesquioxide for drying slag former particle with drying in bone coal particle reacts, and obtains the silicon of low melting point
Hydrochlorate, so as to reduce the fusion temperature of dry bone coal particle, reduces the energy consumption of iron liquid furnace, slag former particle is dried in iron liquid furnace
Can decomposite lime, lime can with the sulphur in drying bone coal particle, drying the mixed molten liquid of slag former particle and ferrous material,
Phosphorus chemically reacts, so as to reduce the content of sulphur in mixed molten liquid, phosphorus, reduces sulphur, phosphorus in mixed molten liquid rich to vanadium-bearing hot metal
Collect the interference of vanadium slag, at the same time, the drying bone coal particle in iron liquid furnace melts rapidly at high temperature, during which dry bone coal particle
In carbon with itself in ferriferous oxide and barium oxide occur reduction reaction, di-iron trioxide is reduced to ferrous oxide, oxygen
Change ferrous iron is reduced to iron, vanadic anhydride and is reduced to vanadium trioxide, while drying containing after carbon and the melting in bone coal particle
Carburization reaction occurs for iron material, generates saturated carbon, and the saturated carbon is discharged into mixed molten liquid, is aoxidized with the iron in mixed molten liquid
Reduction reaction occurs for thing, barium oxide, and the vanadium after being reduced sufficiently enters in mixed molten liquid, so as to obtain vanadium-bearing hot metal.From iron
The high-temperature flue gas that liquid furnace is obtained can be used at least one of bone coal pretreatment unit and slag former pretreatment unit to bone coal, make
Slag agent is dried and the pre-heat treatment, thus advantageously reduces the energy consumption of bone coal pretreatment unit and slag former pretreatment unit,
The economy of raising system；In vanadium extraction device, vanadium-bearing hot metal can obtain 15wt% containing vanadic anhydride in the presence of oxygen
Vanadium slag above, is more than 10 times of pentoxide content in bone coal, reaches the purpose of Vanadium Concentrationin, the half steel of gained can return to
Melted into iron liquid furnace, as the ferriferous oxide and the mother liquor of barium oxide melting and reducing when drying bone coal particles fuse in it,
In this way, being 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, subtracted
The energy consumption of few iron liquid furnace, further improves the economy of system；, can be by the vanadic anhydride in vanadium slag in vanadium slag processing unit
Propose, while alkaline consumption reduction by more than 75%.The production cost of whole extracting vanadium from stone coal system and energy resource consumption reduction by more than 10%.
In addition, according to the system of the extracting vanadium from stone coal of the utility model above-described embodiment, can also have skill additional as follows
Art feature：
Optional, the bone coal pretreatment unit includes breaker, drying device and the preheating device being sequentially connected.By
This, is conducive to removing the moisture and impurity in bone coal, while accelerate to dry the burn-off rate of bone coal particle in follow-up iron liquid furnace, from
And improve the reaction speed in iron liquid furnace.
Optional, the slag former pretreatment unit includes breaker, drying device and the preheating device being sequentially connected.
Thus, be conducive to removing the moisture and impurity in slag former, while accelerating to dry the fusing of slag former particle in follow-up iron liquid furnace
Speed, so as to improve the reaction speed in iron liquid furnace.
Optional, the vanadium slag processing unit includes the first calciner, water immersion and the second roasting being sequentially connected
Device.Thus, be conducive to obtaining vanadic anhydride.
Additional aspect and advantage of the present utility model will be set forth in part in the description, partly by from following description
In become obvious, or by it is of the present utility model practice recognize.
Brief description of the drawings
Of the present utility model above-mentioned and/or additional aspect and advantage will from description of the accompanying drawings below to embodiment is combined
Become substantially and be readily appreciated that, wherein：
Fig. 1 is the system structure diagram of the extracting vanadium from stone coal according to the utility model one embodiment；
Fig. 2 is that the method flow for implementing extracting vanadium from stone coal according to the system of the extracting vanadium from stone coal of the utility model one embodiment shows
It is intended to；
Fig. 3 is the system structure diagram of the extracting vanadium from stone coal according to the utility model further embodiment.
Embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element or element with same or like function are represented to same or similar label eventually.Below by ginseng
The embodiment for examining accompanying drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Limitation.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be
Mechanically connect or electrically connect；Can be joined directly together, can also be indirectly connected to by intermediary, can be two
The connection of element internal or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the common skill of this area
For art personnel, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.
In one side of the present utility model, the utility model proposes a kind of system of extracting vanadium from stone coal.According to this practicality
New embodiment, with reference to Fig. 1, the system includes：Bone coal pretreatment unit 100, slag former pretreatment unit 200, iron liquid furnace
300th, vanadium extraction device 400 and vanadium slag processing unit 500.
According to embodiment of the present utility model, bone coal pretreatment unit 100 has bone coal entrance 101, the and of exhanst gas outlet 102
Bone coal particle outlet 103 is dried, and suitable for bone coal is pre-processed, to obtain flue gas and to dry bone coal particle.Specifically,
By the way that bone coal is pre-processed, the crystallization water in bone coal, Free water and other volatile impurity can be removed, obtain drying stone
Coal particle, in this way, being conducive to improving the content of vanadic anhydride in follow-up vanadium slag.
According to one embodiment of the present utility model, bone coal pretreatment unit can include be sequentially connected breaker,
Drying device and preheating device.Specifically, by bone coal carry out it is broken be conducive to improving it is follow-up bone coal is dried and preheating at
The efficiency of reason, while accelerating to dry melting rate of the bone coal particle in iron liquid furnace；Bone coal can be removed after drying and preheating
The crystallization water, Free water and other impurity that also volatilize in bone coal, obtain the drying bone coal particle that temperature is more than 300 degrees Celsius,
In this way, the amount for bringing impurity into iron liquid furnace is advantageously reduced, so that the content of vanadic anhydride in follow-up gained vanadium slag is improved,
Simultaneously because dry bone coal particle it is preheated after have certain temperature, the energy consumption of iron liquid furnace can be reduced, so as to improve the warp of whole system
Ji property.
According to further embodiment of the present utility model, the particle diameter for drying bone coal particle is not particularly restricted, this area
Technical staff can be selected according to actual needs, according to a specific embodiment of the present utility model, dry bone coal particle
In particle diameter can be 5~15mm accounting more than 80%.Inventor has found, if particle is too thin, influence production gas permeability, heat transfer
Slowly；And if particle is too thick, heat is slow from the speed inside outer incoming particle, low production efficiency.Thus, using the application particle diameter model
The passenger flow enclosed can significantly improve productivity ratio, shorten the heat, and reduce energy consumption.
According to embodiment of the present utility model, slag former pretreatment unit 200 has slag former entrance 201, water out 202
With dry slag former particle outlet 203, and suitable for slag former is pre-processed, to obtain water and drying slag former particle.
Specifically, by the way that slag former is pre-processed, the crystallization water and Free water in slag former can be removed, obtain drying slag former
Particle, in this way, the impurity content that slag former is brought into iron liquid furnace can be reduced, so as to improve containing for vanadic anhydride in follow-up vanadium slag
Amount.
According to one embodiment of the present utility model, slag former pretreatment unit can include the broken dress being sequentially connected
Put, drying device and preheating device.Specifically, by slag former carry out it is broken be conducive to improving it is follow-up slag former is dried and
The efficiency of the pre-heat treatment, while accelerating to dry melting rate of the slag former particle in iron liquid furnace；Slag former is through drying and preheating
Afterwards, the crystallization water and Free water in slag former can be removed, the drying slag former particle that temperature is more than 300 degrees Celsius is obtained,
In this way, the amount for bringing impurity into iron liquid furnace is advantageously reduced, so that the content of vanadic anhydride in follow-up gained vanadium slag is improved,
Simultaneously because dry slag former particle it is preheated after have certain temperature, the energy consumption of iron liquid furnace can be reduced, so as to improve whole system
Economy.
According to further embodiment of the present utility model, the particle diameter for drying slag former particle is not particularly restricted, ability
Field technique personnel can be selected according to actual needs, according to a specific embodiment of the present utility model, dry slag former
Particle diameter in particle can be 6~15mm accounting more than 80%, 3~5mm accounting more than 15%, the accounting 5% less than 3mm
Below.Inventor has found, dry slag former particle particle diameter is excessive or the too small production requirement for being all unfavorable for energy-conserving and environment-protective, particle diameter
Excessive, then heat transfer rate is slow, and fusing is difficult；Particle diameter is too small, then production process is big with smoke discharge amount, and dedusting intensity is big, slag making
Agent wastage is big.
According to embodiment of the present utility model, iron liquid furnace 300 has ferrous material entrance 301, dries bone coal particle entrance
302nd, slag former particle entrance 303, vanadium-bearing hot metal outlet 304 and high-temperature flue gas outlet 305 are dried, bone coal particle entrance is dried
302 are connected with drying bone coal particle outlet 103, dry slag former particle entrance 303 with drying the phase of slag former particle outlet 203
Even, high-temperature flue gas outlet 305 is connected with least one of bone coal pretreatment unit 100 and slag former pretreatment unit 200, and
Suitable for ferrous material, dry bone coal particle and dry slag former particle are carried out into melt process, to obtain vanadium-bearing hot metal and height
Warm flue gas, and high-temperature flue gas is back at least one of above-mentioned bone coal pretreatment unit and above-mentioned slag former pretreatment unit
In.Specifically, in iron liquid furnace, when ferrous material fusing is warming up to not less than 1450 degrees Celsius, will dry bone coal particle and
Dry slag former particle to add in iron liquid furnace, the sieve and silica-sesquioxide for drying slag former particle with drying in bone coal particle reacts, and obtains
To the silicate of low melting point, so as to reduce the fusion temperature of dry bone coal particle, the energy consumption of iron liquid furnace is reduced, is done in iron liquid furnace
Dry slag former particle can decomposite lime, and lime can be with drying the mixed of bone coal particle, dry slag former particle and ferrous material
Close the sulphur in liquation, phosphorus to chemically react, so as to reduce the content of sulphur in mixed molten liquid, phosphorus, reduce sulphur, phosphorus in mixed molten liquid
The interference of vanadium slag is enriched with to vanadium-bearing hot metal, at the same time, the drying bone coal particle in iron liquid furnace melts rapidly at high temperature, during which
With the ferriferous oxide and barium oxide in itself reduction reaction occurs for the carbon dried in bone coal particle, and di-iron trioxide is reduced to
Ferrous oxide, ferrous oxide reduction are that iron, vanadic anhydride are reduced to vanadium trioxide, at the same dry carbon in bone coal particle with
Carburization reaction occurs for the ferrous material after melting, generates saturated carbon, and the saturated carbon is discharged into ferrous material and drying after melting
In the mixed molten liquid of bone coal particle, occurs reduction reaction with ferriferous oxide therein, barium oxide, the vanadium after being reduced sufficiently enters
Enter and vanadium-bearing hot metal is obtained in mixed molten liquid.After dry bone coal particle is completely melting down under 1500-1600 degrees Celsius, 30- is incubated
60min.The high-temperature flue gas obtained from iron liquid furnace can be used for bone coal pretreatment unit and slag former pretreatment unit at least it
A pair of bone coals and/or slag former are dried and the pre-heat treatment, advantageously reduce bone coal pretreatment unit and/or slag former is located in advance
The energy consumption of unit is managed, the economy of system is improved.Dry the carbon in bone coal particle and the ferriferous oxide and barium oxide in itself
The reaction equation for occurring reduction reaction mainly has：
C+Fe2O3=FeO+CO (1)
C+FeO=Fe+CO (2)
C+V2O5=V2O3+CO (3)
Dry the carbon in bone coal particle and carburization reaction occurs for the ferrous material after melting, generate saturated carbon, the saturated carbon
In the ferrous material and the mixed molten liquid of dry bone coal particle that are discharged into after melting, 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 the present utility model, bone coal particle and ferrous material, the weight of dry slag former particle are dried
Amount ratio is not particularly restricted, and those skilled in the art can be selected according to actual needs, according to of the present utility model one
Individual specific embodiment, the weight ratio for drying bone coal particle and ferrous material, dry slag former particle is 1：(1~2)：(0.5~
1).Inventor find, when dry bone coal grain mixture ratio it is too low when, ferrous material is too high, and content of vanadium is low in vanadium-bearing hot metal, vanadium extraction into
This increase；And when dry bone coal grain mixture ratio is too high, then carbon resource is excessive, cause carbon resource to waste, and dry bone coal particle
Burn-off rate reduction, barium oxide reaction speed reduction, ultimately result in production efficiency reduction.When matching somebody with somebody for dry slag former particle
Than it is too high when, increase production cost, and when dry slag former grain mixture ratio it is too low when, it is difficult to play slag making and reduction slag melting
Effect, fusing need heat rise.
According to embodiment of the present utility model, vanadium extraction device 400 has vanadium-bearing hot metal entrance 401, oxygen intake 402, half
Steel outlet 403 and vanadium slag outlet 404, vanadium-bearing hot metal entrance 401 are connected with vanadium-bearing hot metal outlet 304, half steel outlet 403 and iron content
Material inlet 301 is connected, and suitable for vanadium-bearing hot metal and oxygen are carried out into vanadium extraction processing, to obtain vanadium slag and half steel, and will be partly
Steel is returned in above-mentioned iron liquid furnace.Specifically, in vanadium extraction device, vanadium-bearing hot metal can be obtained in the presence of oxygen containing five oxidations two
More than vanadium 15wt% vanadium slag, is more than ten times of pentoxide content in bone coal, reaches the purpose of Vanadium Concentrationin, the half of gained
Steel, which may return in iron liquid furnace, to be melted, as the ferriferous oxide and barium oxide melting and reducing when drying bone coal particles fuse in it
Mother liquor, in this way, be conducive to recycling the half steel obtained by vanadium extraction device, and can substantially reduce ferrous material in iron liquid furnace plus
Enter amount, reduce the energy consumption of iron liquid furnace, further improve the economy of system.The reaction equation of vanadium-bearing hot metal and oxygen reaction is main
Have：
[V]+[O]=V2O3 (9)
[Fe]+[O]=(FeO) (10)
[O]+[Si]=(SiO2) (11)
[C]+[O]=CO (12)
According to one embodiment of the present utility model, the condition of vanadium extraction processing is not particularly restricted, people in the art
Member can be selected according to actual needs, according to a specific embodiment of the present utility model, and the temperature of vanadium extraction processing can be with
For 1320~1420 degrees Celsius, oxygen blow duration can be 5~8min.Inventor has found, if the temperature of vanadium extraction processing is too high, clinker
Will be thinning, be unfavorable for slag sluicing system, and if vanadium extraction processing temperature it is too low, reaction speed is slack-off, can not meet production requirement,
Production efficiency is low；When oxygen blow duration is too short, vanadium reduction is incomplete, causes vanadium resource to waste；And when oxygen blow duration is long,
Metallic iron is oxidized to the amount increase of ferrous oxide, and iron enters the amount increase of vanadium slag, causes iron resource to waste, also causes five in vanadium slag
The content reduction of V 2 O, and then cause the cost of vanadium slag production unit vanadic anhydride to increase.
According to embodiment of the present utility model, there is vanadium slag processing unit 500 vanadium slag entrance 501 and vanadic anhydride to export
502, vanadium slag entrance 501 is connected with vanadium slag outlet 404, and suitable for vanadium slag is carried out into vanadium slag processing, to obtain vanadic anhydride.
Specifically, in vanadium slag processing unit, the vanadic anhydride in vanadium slag can be proposed, while alkaline consumption reduction by more than 75%.
According to one embodiment of the present utility model, vanadium slag processing unit is not particularly restricted, those skilled in the art
It can be selected according to actual needs, according to a specific embodiment of the present utility model, vanadium slag processing unit can include
The first calciner, water immersion and the second calciner being sequentially connected.Specifically, 750-900 degrees Celsius of sintering temperature, when
Between 1-2h, sintering temperature is too high or during overlong time, part vanadium easily generates the complicated thing phase that can not be leached, and disappears while increasing the energy
Consumption；And sintering temperature is too low or during the too short time, vanadic anhydride changes into sodium vanadate not exclusively, causes vanadium recovery low；Roasting
By vanadium slag fine grinding to 60-100 mesh after burning, granularity is excessively thick, and vanadium is difficult to leach, meticulous, then the increase of fine grinding cost, it is difficult to economic life
Production.Vanadium slag after fine grinding is mixed with water, solid-to-liquid ratio 1：(2-5), is heated to 70-95 degrees Celsius of leaching, vanadium with insoluble in
The hydrate forms of water are present, and are filtrated to get metaborate monohydrate vanadium.When vanadium slag is with that can mix, if solid-to-liquid ratio is too low, vanadium enters liquid speed
Degree is low, and leaching rate is low, causes vanadium recovery low；And if solid-to-liquid ratio is excessive, water consume increase causes water resource waste.During water logging, if
Temperature is too high, and water can volatilize as water vapor, cause water consume to increase, and if temperature is too low, water logging thermodynamics of reactions bar
Part is poor, and vanadium water logging rate is low, and vanadium recovery is low.The hydration vanadium of above-mentioned gained goes water to obtain product vanadic anhydride in roaster.
According to the system of the extracting vanadium from stone coal of the utility model embodiment by the way that bone coal, slag former are pre-processed in bone coal respectively
Pre-processed, the water in bone coal and slag former and other volatile impurity can be gone in unit and slag former pretreatment unit
Fall, obtain drying bone coal particle and dry slag former particle, in this way, being conducive to improving containing for vanadic anhydride in follow-up vanadium slag
Amount；In iron liquid furnace, the sieve and silica-sesquioxide for drying slag former particle with drying in bone coal particle reacts, and obtains the silicic acid of low melting point
Salt, so as to reduce the fusion temperature of dry bone coal particle, reduces the energy consumption of iron liquid furnace, drying slag former particle in iron liquid furnace can
To decomposite sulphur, the phosphorus in lime, the mixed molten liquid that lime can be with drying bone coal particle, dry slag former particle and ferrous material
Chemically react, so as to reduce the content of sulphur in mixed molten liquid, phosphorus, reduce sulphur, phosphorus in mixed molten liquid and vanadium-bearing hot metal is enriched with
The interference of vanadium slag, at the same time, the drying bone coal particle in iron liquid furnace are melted rapidly at high temperature, are during which 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
Carburization reaction occurs for material, generates saturated carbon, the saturated carbon is discharged into mixed molten liquid, with the ferriferous oxide in mixed molten liquid,
Reduction reaction occurs for barium oxide, and the vanadium after being reduced sufficiently enters in mixed molten liquid, so as to obtain vanadium-bearing hot metal.From iron liquid furnace
Obtained high-temperature flue gas can be used at least one of bone coal pretreatment unit and slag former pretreatment unit to bone coal, slag former
It is dried and the pre-heat treatment, thus advantageously reduces the energy consumption of bone coal pretreatment unit and slag former pretreatment unit, improves
The economy of system；In vanadium extraction device, vanadium-bearing hot metal can obtain more than 15wt% containing vanadic anhydride in the presence of oxygen
Vanadium slag, be more than 10 times of pentoxide content in bone coal, reach the purpose of Vanadium Concentrationin, the half steel of gained may return to iron
Melted in liquid furnace, as the ferriferous oxide and the mother liquor of barium oxide melting and reducing when drying bone coal particles fuse in it, 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, reduce iron
The energy consumption of liquid furnace, further improves the economy of system；In vanadium slag processing unit, the vanadic anhydride in vanadium slag can be carried
Go out, while alkaline consumption reduction by more than 75%.The production cost of whole extracting vanadium from stone coal system and energy resource consumption reduction by more than 10%.
Understand for convenience, the method that the system using above-mentioned extracting vanadium from stone coal implements extracting vanadium from stone coal is entered below with reference to Fig. 2
Row is described in detail.According to embodiment of the present utility model, this method includes：
S100：Bone coal is supplied into bone coal pretreatment unit and pre-processed
In the step, bone coal is supplied into bone coal pretreatment unit and pre-processed, to obtain flue gas and to dry stone
Coal particle.Inventor has found, by the way that bone coal is pre-processed, can be by the crystallization water in bone coal, Free water and other are volatile
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 the present utility model, bone coal pretreatment includes broken, dry and the pre-heat treatment successively.Specifically
, 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 accelerating to dry stone
Melting rate of the coal particle in iron liquid furnace；Bone coal after drying and preheating, can remove the crystallization water in bone coal, Free water and
Other impurity that also volatilize, obtain the drying bone coal particle that temperature is more than 300 degrees Celsius, in this way, advantageously reducing to iron liquid furnace
In bring the amount of impurity into, so that the content of vanadic anhydride in follow-up gained vanadium slag is improved, while because drying bone coal particle through pre-
There is certain temperature after heat, the energy consumption of iron liquid furnace can be reduced, so as to improve the economy of whole system.
According to further embodiment of the present utility model, the particle diameter for drying bone coal particle is not particularly restricted, this area
Technical staff can be selected according to actual needs, according to a specific embodiment of the present utility model, dry bone coal particle
In particle diameter can be 5~15mm accounting more than 80%.Inventor has found, if particle is too thin, influence production gas permeability, heat transfer
Slowly；And if particle is too thick, heat is slow from the speed inside outer incoming particle, low production efficiency.Thus, using the application particle diameter model
The particle enclosed can significantly improve productivity ratio, shorten the heat, and reduce energy consumption.
S200：Slag former is supplied into slag former pretreatment unit and pre-processed
In the step, slag former is supplied into slag former pretreatment unit and pre-processed, to obtain water and drying
Slag former particle.Specifically, by the way that slag former is pre-processed, the crystallization water and Free water in slag former can be removed, obtained
To slag former particle is dried, in this way, the impurity content that slag former is brought into iron liquid furnace can be reduced, so as to improve five in follow-up vanadium slag
The content of V 2 O.
According to one embodiment of the present utility model, slag former pretreatment includes broken, dry and preheated successively.Specifically
, by slag former carry out it is broken be conducive to improving it is follow-up slag former is dried and the pre-heat treatment efficiency, while accelerating dry
Melting rate of the dry slag former particle in iron liquid furnace；Slag former can remove the crystallization in slag former after drying and preheating
Water and Free water, obtain the drying slag former particle that temperature is more than 300 degrees Celsius, in this way, advantageously reducing into iron liquid furnace
The amount of impurity is brought into, so that the content of vanadic anhydride in follow-up gained vanadium slag is improved, while because drying slag former particle through pre-
There is certain temperature after heat, the energy consumption of iron liquid furnace can be reduced, so as to improve the economy of whole system.
According to further embodiment of the present utility model, the particle diameter for drying slag former particle is not particularly restricted, ability
Field technique personnel can be selected according to actual needs, according to a specific embodiment of the present utility model, dry slag former
Particle diameter in particle can be 6~15mm accounting more than 80%, 3~5mm accounting more than 15%, the accounting 5% less than 3mm
Below.Inventor has found, dry slag former particle particle diameter is excessive or the too small production requirement for being all unfavorable for energy-conserving and environment-protective, particle diameter
Excessive, then heat transfer rate is slow, and fusing is difficult；Particle diameter is too small, then production process is big with smoke discharge amount, and dedusting intensity is big, slag making
Agent wastage is big.
S300：Ferrous material, dry bone coal particle and dry slag former particle are supplied into iron liquid furnace and carried out at melting
Reason
In the step, by ferrous material, dry bone coal particle and dry slag former particle and supply and melted into iron liquid furnace
Melt processing, to obtain vanadium-bearing hot metal and high-temperature flue gas, and high-temperature flue gas is back to above-mentioned bone coal pretreatment unit and above-mentioned
In at least one of slag former pretreatment unit.Specifically, in iron liquid furnace, treating that ferrous material fusing is warming up to and being not less than
At 1450 degrees Celsius, bone coal particle will be dried and dried in slag former particle addition iron liquid furnace, slag former particle and drying is dried
Sieve and silica-sesquioxide reaction in bone coal particle, obtains the silicate of low melting point, so that the fusion temperature of dry bone coal particle is reduced,
Reduce the energy consumption of iron liquid furnace, slag former particle is dried in iron liquid furnace can decomposite lime, lime can with dry bone coal particle,
The sulphur in the mixed molten liquid of slag former particle and ferrous material, phosphorus is dried to chemically react, thus reduce sulphur in mixed molten liquid,
The content of phosphorus, reduces the interference that sulphur, phosphorus in mixed molten liquid are enriched with vanadium slag to vanadium-bearing hot metal, at the same time, the drying in iron liquid furnace
Bone coal particle is melted rapidly at high temperature, and the carbon during which dried in bone coal particle is sent out with the ferriferous oxide and barium oxide in itself
Raw reduction reaction, is reduced to ferrous oxide, ferrous oxide reduction for iron, vanadic anhydride by di-iron trioxide and is reduced to three oxidations
Two vanadium, while drying the carbon in bone coal particle and the ferrous material generation carburization reaction after melting, generate saturated carbon, the saturated carbon
In the ferrous material and the mixed molten liquid of dry bone coal particle that are discharged into after melting, sent out with ferriferous oxide therein, barium oxide
Raw reduction reaction, the vanadium after being reduced sufficiently, which enters in mixed molten liquid, obtains vanadium-bearing hot metal.When dry bone coal particle is in 1500-
Under 1600 degrees Celsius completely it is melting down after, be incubated 30-60min.It is single that the high-temperature flue gas obtained from iron liquid furnace can be used for bone coal to pre-process
At least one of member and slag former pretreatment unit bone coal and/or slag former are dried and the pre-heat treatment, are conducive to drop
The energy consumption of low bone coal pretreatment unit and/or slag former pretreatment unit, improves the economy of system.Dry in bone coal particle
The reaction equation that with the ferriferous oxide in itself and barium oxide reduction reaction occurs for carbon mainly has：
C+Fe2O3=FeO+CO (1)
C+FeO=Fe+CO (2)
C+V2O5=V2O3+CO (3)
Dry the carbon in bone coal particle and carburization reaction occurs for the ferrous material after melting, generate saturated carbon, the saturated carbon
In the ferrous material and the mixed molten liquid of dry bone coal particle that are discharged into after melting, 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 the present utility model, bone coal particle and ferrous material, the weight of dry slag former particle are dried
Amount ratio is not particularly restricted, and those skilled in the art can be selected according to actual needs, according to of the present utility model one
Individual specific embodiment, the weight ratio for drying bone coal particle and ferrous material, dry slag former particle can be 1：(1~2)：(0.5
~1).Inventor has found that, when dry bone coal grain mixture ratio is too low, ferrous material is too high, and content of vanadium is low in vanadium-bearing hot metal, vanadium extraction
Cost increase；And when dry bone coal grain mixture ratio is too high, then carbon resource is excessive, cause carbon resource to waste, and dry bone coal
The burn-off rate reduction of grain, barium oxide reaction speed reduction ultimately results in production efficiency reduction.When dry slag former particle
When matching too high, increase production cost, and when dry slag former grain mixture ratio is too low, it is difficult to play slag making and reduction clinker melts
The effect of point, the heat rise that fusing needs.
S400：Vanadium-bearing hot metal and oxygen are supplied into vanadium extraction device and carry out vanadium extraction processing
In the step, by vanadium-bearing hot metal and oxygen supply into vanadium extraction device carry out vanadium extraction processing, so as to obtain vanadium slag and
Half steel, and by the iron liquid furnace in half steel return S300.Inventor has found, in vanadium extraction device, work of the vanadium-bearing hot metal in oxygen
With the lower vanadium slag obtained more than 15wt% containing vanadic anhydride, it is more than ten times of pentoxide content in bone coal, reaches
The purpose of Vanadium Concentrationin, the half steel of gained, which may return in iron liquid furnace, to be melted, as iron oxygen when drying bone coal particles fuse in it
The mother liquor of compound and barium oxide melting and reducing, in this way, being conducive to recycling the half steel obtained by vanadium extraction device, and can significantly subtract
The addition of ferrous material in few iron liquid furnace, reduces the energy consumption of iron liquid furnace, further improves the economy of system.Vanadium-bearing hot metal with
The reaction equation of oxygen reaction mainly has：
[V]+[O]=V2O3 (9)
[Fe]+[O]=(FeO) (10)
[O]+[Si]=(SiO2) (11)
[C]+[O]=CO (12)
According to one embodiment of the present utility model, the condition of vanadium extraction processing is not particularly restricted, people in the art
Member can be selected according to actual needs, according to a specific embodiment of the present utility model, and the temperature of vanadium extraction processing can be with
For 1320~1420 degrees Celsius, oxygen blow duration can be 5~8min.Inventor has found, if the temperature of vanadium extraction processing is too high, clinker
Will be thinning, be unfavorable for slag sluicing system, and if vanadium extraction processing temperature it is too low, reaction speed is slack-off, can not meet production requirement,
Production efficiency is low；When oxygen blow duration is too short, vanadium reduction is incomplete, causes vanadium resource to waste；And when oxygen blow duration is long,
Metallic iron is oxidized to the amount increase of ferrous oxide, and iron enters the amount increase of vanadium slag, causes iron resource to waste, also causes five in vanadium slag
The content reduction of V 2 O, and then cause the cost of vanadium slag production unit vanadic anhydride to increase.
S500：Vanadium slag is supplied into vanadium slag processing unit and carries out vanadium slag processing
In the step, vanadium slag is supplied into vanadium slag processing unit and carries out vanadium slag processing, 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 the present utility model, vanadium slag processing is not particularly restricted, and those skilled in the art can be with
Selected according to actual needs, according to a specific embodiment of the present utility model, vanadium slag processing can include first successively
Calcination process, Soaking treatment and the second calcination process.Specifically, 750-900 degrees Celsius of sintering temperature, time 1-2h, roasting temperature
When spending high or overlong time, part vanadium easily generates the complicated thing phase that can not be leached, while increasing energy resource consumption；And sintering temperature
During the too low or too short time, vanadic anhydride changes into sodium vanadate not exclusively, causes vanadium recovery low；By vanadium slag fine grinding after roasting
To 60-100 mesh, granularity is excessively thick, and vanadium is difficult to leach, meticulous, then the increase of fine grinding cost, it is difficult to economic production.After fine grinding
Vanadium slag is mixed with water, solid-to-liquid ratio 1：(2-5), is heated to 70-95 degrees Celsius of leaching, vanadium is with water insoluble hydrate forms
In the presence of being filtrated to get 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,
Cause vanadium recovery low；And if solid-to-liquid ratio is excessive, water consume increase causes water resource waste.During water logging, if temperature is too high, water meeting
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 logging rate
Low, vanadium recovery 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 is implemented by by bone coal, slag making according to the system of the extracting vanadium from stone coal of the utility model embodiment
Agent is pre-processed in bone coal pretreatment unit and slag former pretreatment unit respectively, can by the water in bone coal and slag former and
Other volatile impurity remove, and obtain drying bone coal particle and dry slag former particle, in this way, being conducive to improving in follow-up vanadium slag
The content of vanadic anhydride；In iron liquid furnace, the sieve and silica-sesquioxide for drying slag former particle with drying in bone coal particle reacts, and obtains
To the silicate of low melting point, so as to reduce the fusion temperature of dry bone coal particle, the energy consumption of iron liquid furnace is reduced, is done in iron liquid furnace
Dry slag former particle can decomposite lime, and lime can be with drying the mixed of bone coal particle, dry slag former particle and ferrous material
Close the sulphur in liquation, phosphorus to chemically react, so as to reduce the content of sulphur in mixed molten liquid, phosphorus, reduce sulphur, phosphorus in mixed molten liquid
The interference of vanadium slag is enriched with to vanadium-bearing hot metal, at the same time, the drying bone coal particle in iron liquid furnace melts rapidly at high temperature, during which
With the ferriferous oxide and barium oxide in itself reduction reaction occurs for the carbon dried in bone coal particle, and di-iron trioxide is reduced to
Ferrous oxide, ferrous oxide reduction are that iron, vanadic anhydride are reduced to vanadium trioxide, at the same dry carbon in bone coal particle with
Carburization reaction occurs for ferrous material after melting, generates saturated carbon, and the saturated carbon is discharged into mixed molten liquid, and in mixed molten liquid
Ferriferous oxide, barium oxide occur reduction reaction, vanadium after being reduced sufficiently enters in mixed molten liquid, so as to obtain containing vanadium iron
Water.The high-temperature flue gas obtained from iron liquid furnace can be used at least one of bone coal pretreatment unit and slag former pretreatment unit pair
Bone coal, slag former are dried and the pre-heat treatment, thus advantageously reduce bone coal pretreatment unit and slag former pretreatment unit
Energy consumption, improve overall economy；In vanadium extraction device, vanadium-bearing hot metal can obtain containing vanadic anhydride in the presence of oxygen
More than 15wt% vanadium slag, is more than 10 times of pentoxide content in bone coal, reaches the purpose of Vanadium Concentrationin, the half steel of gained
It may return in iron liquid furnace and melt, the ferriferous oxide and barium oxide melting and reducing during as dry bone coal particles fuse in it
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 overall economy；, can be by five oxygen in vanadium slag in vanadium slag processing unit
Change the proposition of two vanadium, while alkaline consumption reduction by more than 75%.The production cost of whole extracting vanadium from stone coal system and energy resource consumption reduction by 10%
More than.
Below with reference to specific embodiment, the utility model is described, it is necessary to which explanation is, these embodiments are only
Descriptive, without limiting the utility model in any way.
Embodiment 1
With reference to Fig. 3, bone coal is crushed to particle diameter 8-20mm and accounts for more than 80% (bone coal constituent and the content of individual composition are shown in Table
1), slag former (lime stone) is crushed to the accounting more than 80% that particle diameter is 6~15mm, and 3~5mm accounting more than 15% is less than
3mm accounting delivers to iron liquid furnace after drying and preheating respectively below 5%, and bone coal particle is dried after preheating and slag former is dried
The temperature of particle is 400 degrees Celsius, preheats high-temperature flue gas of the thermal source from iron liquid furnace, treats that the ferrous material in iron liquid furnace is (raw
Iron or steel scrap) fusing is when being warming up to 1450 degrees Celsius, by the drying bone coal particle after preheating and dries under slag former particle passes through
Feed bin and tremie pipe are uniformly added into iron liquid furnace thorax, dry bone coal particle and ferrous material, the charging weight of dry slag former particle
Amount is than being 1：1.5：0.6, drying slag former particle can react with the sieve and silica-sesquioxide dried in bone coal particle, obtain low melting point
Silicate, so as to reduce the fusion temperature of dry bone coal particle, reduce the energy consumption of iron liquid furnace, slag former dried in iron liquid furnace
Particle can be decomposited in lime, the mixed molten liquid that lime can be with drying bone coal particle, dry slag former particle and ferrous material
Sulphur, phosphorus chemically react, so as to reduce the content of sulphur in mixed molten liquid, phosphorus, reduce in mixed molten liquid sulphur, phosphorus to containing vanadium iron
Shuifu County collects the interference of vanadium slag.Dry bone coal particle to melt rapidly in iron liquid furnace, and dry bone coal particles fuse temperature-rise period
In, with the ferriferous oxide and barium oxide in itself reduction reaction occurs for the carbon dried in bone coal particle, and reaction equation is：
C+Fe2O3=FeO+CO (1)
C+FeO=Fe+CO (2)
C+V2O5=V2O3+CO (3)
Meanwhile, dry the carbon in bone coal particle and carburization reaction occurs for the ferrous material after melting, generate saturated carbon, this is satisfied
With the ferrous material after carbon emissions to melting and dry bone coal particle, dry the mixed molten liquid of slag former particle, it is and therein
Reduction reaction occurs for ferriferous oxide, barium oxide, and 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.After dry bone coal particle is completely melting down under 1500 degrees Celsius, 50min is incubated.From iron liquid furnace
Obtained high-temperature flue gas can be used for entering bone coal and/or slag former in bone coal pretreatment unit and/or slag former pretreatment unit
Row drying and the pre-heat treatment.Vanadium-bearing hot metal is come out of the stove into ladle, and ladle is had bad luck to vanadium extraction device (vanadium extraction stove), vanadium extraction temperature control
System is at 1320 degrees Celsius, and oxygen blow duration 7min, vanadium-bearing hot metal can obtain the vanadium slag containing vanadic anhydride in the presence of oxygen, blow
Following reaction mainly occurs for oxygen process：
[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, which may return in iron liquid furnace, to be melted, and is 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 main component of vanadium slag and the content of each composition are shown in Table 3；The vanadium slag feeding vanadium 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 11% of whole extracting vanadium from stone coal.
The bone coal main component of table 1 and each component content (wt%)
| V2O5 | Fe | MgO | SiO2 | S | CaO | P | Al2O3 | C | ∑ |
| 1.525 | 6.804 | 6.96 | 48.6 | 1.768 | 8.34 | 0.365 | 11.65 | 12-25 | 100 |
The vanadium-bearing hot metal main component of table 2 and each component content (wt%)
| V | Si | C | S | P |
| 0.522 | 0.53 | 4.08 | 0.22 | 0.048 |
The vanadium slag main component of table 3 and each component content (wt%)
| V2O5 | SiO2 | TFe | CaO |
| 15.86 | 32.55 | 37.12 | 5.63 |
Embodiment 2
With reference to Fig. 3, bone coal is crushed to particle diameter 8-10mm and accounts for more than 80% (bone coal constituent and the content of individual composition are shown in Table
1), slag former (lime stone) is crushed to the accounting more than 80% that particle diameter is 6~15mm, and 3~5mm accounting more than 15% is less than
3mm accounting delivers to iron liquid furnace after drying and preheating respectively below 5%, and bone coal particle is dried after preheating and slag former is dried
The temperature of particle is 500 degrees Celsius, preheats high-temperature flue gas of the thermal source from iron liquid furnace, treats that the ferrous material in iron liquid furnace is (raw
Iron or steel scrap) fusing is when being warming up to 1550 degrees Celsius, by the drying bone coal particle after preheating and dries under slag former particle passes through
Feed bin and tremie pipe are uniformly added into iron liquid furnace thorax, dry bone coal particle and ferrous material, the charging weight of dry slag former particle
Amount is than being 1：1：1.35, drying slag former particle can react with the sieve and silica-sesquioxide dried in bone coal particle, obtain low melting point
Silicate, so as to reduce the fusion temperature of dry bone coal particle, reduce the energy consumption of iron liquid furnace, slag former dried in iron liquid furnace
Particle can be decomposited in lime, the mixed molten liquid that lime can be with drying bone coal particle, dry slag former particle and ferrous material
Sulphur, phosphorus chemically react, so as to reduce the content of sulphur in mixed molten liquid, phosphorus, reduce in mixed molten liquid sulphur, phosphorus to containing vanadium iron
Shuifu County collects the interference of vanadium slag.Dry bone coal particle to melt rapidly in iron liquid furnace, and dry bone coal particles fuse temperature-rise period
In, with the ferriferous oxide and barium oxide in itself reduction reaction occurs for the carbon dried in bone coal particle, and reaction equation is：
C+Fe2O3=FeO+CO (1)
C+FeO=Fe+CO (2)
C+V2O5=V2O3+CO (3)
Meanwhile, dry the carbon in bone coal particle and carburization reaction occurs for the ferrous material after melting, generate saturated carbon, this is satisfied
With the ferrous material after carbon emissions to melting and dry bone coal particle, dry the mixed molten liquid of slag former particle, it is and therein
Reduction reaction occurs for ferriferous oxide, barium oxide, and 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.After dry bone coal particle is completely melting down under 1550 degrees Celsius, 41min is incubated.From iron liquid furnace
Obtained high-temperature flue gas can be used for entering bone coal and/or slag former in bone coal pretreatment unit and/or slag former pretreatment unit
Row drying and the pre-heat treatment.Vanadium-bearing hot metal is come out of the stove into ladle, and ladle is had bad luck to vanadium extraction device (vanadium extraction stove), and vanadium-bearing hot metal exists
The vanadium slag containing vanadic anhydride can be obtained in the presence of oxygen, following reaction mainly occurs for oxygen blast process：
[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, which may return in iron liquid furnace, to be melted, and is 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 main component of vanadium slag and the content of each composition are shown in Table 3；The vanadium slag feeding vanadium 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%)
The vanadium slag main component of table 5 and each component content (wt%)
| V2O5 | SiO2 | TFe | CaO |
| 20.28 | 27.72 | 39.74 | 5.19 |
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 the spy that the embodiment or example are described
Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term
State and be necessarily directed to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be with
Combined in an appropriate manner in any one or more embodiments or example.In addition, in the case of not conflicting, this area
Technical staff the not be the same as Example or the feature of example and non-be the same as Example or example described in this specification can be entered
Row is combined and combined.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in scope of the present utility model
It is interior above-described embodiment to be changed, changed, replaced and modification.
Claims (4)
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；
Slag former pretreatment unit, the slag former pretreatment unit has slag former entrance, water out and dries slag former
Grain outlet；
Iron liquid furnace, the iron liquid furnace has ferrous material entrance, dries bone coal particle entrance, dry slag former particle entrance, contain
Vanadium iron water out and high-temperature flue gas outlet, the dry bone coal particle entrance are connected with the dry bone coal particle outlet, described
Dry slag former particle entrance with the dry slag former particle outlet to be connected, the high-temperature flue gas outlet is located in advance with the bone coal
At least one of reason unit and described slag former pretreatment unit are connected；
Vanadium extraction device, the vanadium extraction device has vanadium-bearing hot metal entrance, oxygen intake, half steel outlet and vanadium slag outlet, 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；
Vanadium slag processing unit, the vanadium slag processing unit have vanadium slag entrance and vanadic anhydride outlet, the vanadium slag entrance with
The vanadium slag outlet is connected.
2. system according to claim 1, it is characterised in that the bone coal pretreatment unit is broken including what is be sequentially connected
Device, drying device and preheating device.
3. system according to claim 1, it is characterised in that the slag former pretreatment unit is broken including what is be sequentially connected
Crushing device, drying device and preheating device.
4. system according to claim 1, it is characterised in that the vanadium slag processing unit includes the first roasting being sequentially connected
Burn device, water immersion and the second calciner.
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