CN205907325U - System for carry out integrated treatment to vanadium slag - Google Patents
System for carry out integrated treatment to vanadium slag Download PDFInfo
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- CN205907325U CN205907325U CN201620586077.6U CN201620586077U CN205907325U CN 205907325 U CN205907325 U CN 205907325U CN 201620586077 U CN201620586077 U CN 201620586077U CN 205907325 U CN205907325 U CN 205907325U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a system for carry out integrated treatment to vanadium slag. This system includes: compounding agglomeration device, compounding agglomeration device have vanadium slag entry, sodium salt entry, reductant entry and the export of mixtures lump, reduction smelting device, reduction smelting device have mixtures lump entry and link to each other with the export of mixtures lump with metallization lump export, mixtures lump entry, melting branch separator, melting branch separator and have metallization lump entry, reduced iron export and the export of rich vanadium slag, metallization lump entry links to each other with the export of metallization lump, oxidizing roasting device, oxidizing roasting device have rich vanadium slag entry and the export of vanadium slag grog, and rich vanadium slag entry links to each other with the export of rich vanadium slag, and carry the vanadium device, and to carry the vanadium device and have vanadium slag grog entry, vanadic anhydride export and arrange the cinder notch, vanadium slag grog entry links to each other with the export of vanadium slag grog. This system implementation have the substep of valence unit plain sheet and vanadium to extract in the vanadium slag to, the rate of recovery of iron and vanadium is high.
Description
Technical field
The utility model is related to vanadium slag is carried out with the system of integrated treatment.
Background technology
Vanadium has good plasticity, can roll into piece, paper tinsel at normal temperatures and draw wire, and has elasticity and prolong under uniform temperature
Malleability.A small amount of intergranular impurity, the particularly element such as c, o, n and h, can make its hardness and fragility increase, but make its ductility
Decline.Vanadium has higher impact value, good weldability and conductivity of heat, and seawater, aqueous slkali, organic acid and inorganic acid are had relatively
Good corrosion resistance, can be used as the structural material of ship and the material of chemical vessel, seamless thin wall pipe etc..
The vanadium that there are about 60% in the world is to extract from vanadium slag.Vanadium slag refers to that vanadium-bearing hot metal is oxidized into through bessemerizing
A kind of slag rich in barium oxide and ferriferous oxide.Vanadium slag is by mfe, feo, sio2、v2o3、tio2、cao、al2o3、
mgo、cr2o3Constitute etc. component, wherein, tfe mass content 20～45%, v mass content is with v2o5Meter 14～25%.Existing
The extraction vanadium method of vanadium slag be mix with additive after put into and in rotary kiln or multiple hearth furnace, carry out oxidizing roasting, obtain the vanadium of solubility
Vanadium is transferred to from solid phase by wet-leaching means and is carried out precipitation after liquid phase again by hydrochlorate, and the calcining of precipitation product is obtained v2o5Produce
Product.Additionally, also having the new vanadium extraction hand such as melting direct oxidation method, sub-molten salt method and dchlorine metallurgy method growing up in the last few years
Section.
Focus to Leaching of Vanadium from Vanadium slag research is the rate of recovery how improving vanadium, and the recovery to iron in vanadium slag is rarely reported.
Thus, the system carrying out integrated treatment to vanadium slag has much room for improvement.
Utility model content
The utility model is intended at least solve one of technical problem present in prior art.For this reason, it is of the present utility model
One purpose is to propose a kind of system that vanadium slag is carried out with integrated treatment, after vanadium slag is mixed by this system with reducing agent, sodium salt
First pass through the iron that reducing and smelting reclaims in vanadium slag, sodium salt is favorably improved the rate of recovery of iron, and at the oxidation of subsequently rich vanadium slag
Form water-soluble sodium vanadate with vanadium oxide, reclaiming the vanadium slag after iron makes vanadium be enriched with, and obtains rich vanadium slag, rich vanadium slag during reason
Again water-soluble sodium vanadate is obtained by oxidizing roasting, then extract the vanadic anhydride in rich vanadium slag, this system achieves in vanadium slag
Valuable element iron and the step by step arithmetic of vanadium, and, the rate of recovery of iron and vanadium is high.
According to one side of the present utility model, the utility model provides and a kind of carry out integrated treatment to vanadium slag and be
System.According to embodiment of the present utility model, this system includes: batch mixing agglomeration device, and described batch mixing agglomeration device has vanadium slag and enters
Mouth, sodium salt entrance, reducing agent entrance and mixed material lump outlet；Reducing and smelting device, described reducing and smelting device has mixed
Compound dough block entrance and metallized briquette outlet, described mixed material agglomerate entrance and described mixed material lump outlet phase
Even；Molten point of separator, a described molten point separator has metallized briquette entrance, reduced iron outlet and rich vanadium slag outlet, institute
State metallized briquette entrance to be connected with the outlet of described metallized briquette；Oxidizing roasting device, described oxidizing roasting device has richness
Vanadium slag entrance and the outlet of vanadium slag grog, described richness vanadium slag entrance is exported with described richness vanadium slag and is connected；And vanadium extraction device, described carry
Vanadium device has vanadium slag grog entrance, vanadic anhydride outlet and slag-drip opening, described vanadium slag grog entrance and described vanadium slag grog
Outlet is connected.
According to the utility model embodiment, vanadium slag is carried out with the system of integrated treatment, vanadium slag is mixed with reducing agent, sodium salt
First pass through reducing and smelting device after conjunction and carry out reducing and smelting and obtain granular metal, then reclaimed in vanadium slag by molten point of separator
Reduced iron, wherein, the flux that sodium salt is processed as reducing and smelting, be conducive to improving degree of metalization and the rate of recovery of iron, and
Form water-soluble sodium vanadate with vanadium oxide in the oxidation processes of subsequently rich vanadium slag, reclaim the vanadium slag after iron, containing in vanadium slag
Iron composition reduces, and makes vanadium obtain enrichment and obtains rich vanadium slag, be conducive to the extraction of vanadium, rich vanadium slag carries out oxygen by oxidizing roasting device
Change calcination process, obtain water-soluble sodium vanadate, then the vanadic anhydride in rich vanadium slag is extracted by vanadium extraction device.Thus, this is
System first carry iron again vanadium extraction it is achieved that in vanadium slag valuable element iron and vanadium step by step arithmetic, and, the rate of recovery of iron and vanadium is all notable
Improve.Additionally, the structure of this system, simply it is easy to operation, can be mass produced with serialization.
Optionally, described molten point of separator is electric furnace or molten point of stove.
Optionally, a described molten point separator has the first temperature controller, and described first temperature controller controls molten point
The temperature processing is 1400-1700 degree Celsius.
Optionally, described reducing and smelting device is at least one selected from rotary hearth furnace, rotary kiln, car-bottom furnace and tunnel cave.
Optionally, described reducing and smelting device has second temperature controller, and described second temperature controller controls reduction
The temperature of metallurgy is 1000-1200 degree Celsius.
Optionally, described oxidizing roasting device is at least one selected from rotary hearth furnace and rotary kiln.
Optionally, described vanadium extraction device is wet method vanadium extraction device.
Additional aspect of the present utility model and advantage will be set forth in part in the description, partly will be from explained below
In become obvious, or recognized by practice of the present utility model.
Brief description
Above-mentioned and/or additional aspect of the present utility model and advantage will from reference to the description to embodiment for the accompanying drawings below
Become obvious and easy to understand, wherein:
Fig. 1 shows that the flow process of the method that according to one embodiment of the utility model, vanadium slag is carried out with integrated treatment is illustrated
Figure；
Fig. 2 shows the system of the method that according to the enforcement of one embodiment of the utility model, vanadium slag is carried out with integrated treatment
Structural representation.
Specific embodiment
Embodiment of the present utility model is described below in detail, the example of described embodiment is shown in the drawings, wherein ad initio
To the element that same or similar label represents same or similar element or has same or like function eventually.Below by ginseng
The embodiment examining Description of Drawings is exemplary, is only used for explaining the utility model, and it is not intended that to of the present utility model
Limit.
According to one side of the present utility model, the utility model provides and a kind of carry out integrated treatment to vanadium slag and be
System.With reference to Fig. 2, according to embodiment of the present utility model, this system is explained, this system includes: batch mixing agglomeration dress
Put 100, reducing and smelting device 200, melt a point separator 300, oxidizing roasting device 400 and vanadium extraction device 500.
Batch mixing agglomeration device 100
According to embodiment of the present utility model, batch mixing agglomeration device 100 has vanadium slag entrance 101, sodium salt entrance 102, goes back
Former dose of entrance 103 and mixed material lump outlet 104, batch mixing agglomeration device 100 is used for carrying out vanadium slag, sodium salt and reducing agent
Batch mixing agglomeration is processed, and obtains mixed material agglomerate.Inventor is provided with sodium salt entrance on batch mixing agglomeration device 100, thus former
Sodium salt is with the addition of in material, the flux that sodium salt is processed as reducing and smelting, be conducive to improving degree of metalization and the rate of recovery of iron, and
Form water-soluble sodium vanadate with vanadium oxide in the oxidation processes of subsequently rich vanadium slag, be conducive to reclaiming vanadium.
According to embodiment of the present utility model, the iron-holder of vanadium slag is not less than 20%.Thus, the rate of recovery of iron is high, if
In vanadium slag, iron content is too low, and the value of vanadium slag is low, loses the meaning using the system step by step arithmetic iron and vanadium.
According to embodiment of the present utility model, sodium salt be in sodium carbonate, sodium chloride, sodium acid carbonate and sodium sulphate extremely
Few one kind.Thus, sodium salt flux and vanadium extraction effect good.
According to embodiment of the present utility model, the species of reducing agent is not particularly restricted, and those skilled in the art are permissible
Selected according to actual needs.According to preferred embodiment of the present utility model, reducing agent is selected from reduction coal, semicoke and coke
At least one.Thus, reduction effect is good, and, the price of reducing agent is low, advantageously reduces production cost.
According to preferred embodiment of the present utility model, vanadium slag, sodium salt and reducing agent can by weight for 100:(10～
30): (5～12) carry out batch mixing agglomeration process.Thus, in the mixed material agglomerate of this ratio mixing preparation, reduction effect is good, gold
Belong to rate high, and the temperature of reducing and smelting is low.If the consumption of sodium salt is very few, the reaction generating sodium vanadate is insufficient, and sodium
The consumption of salt is excessive, and excessive sodium salt enters into containing in vanadium solution in follow-up water logging goes out, and may pollute precipitation product.With
When, if the consumption of reducing agent is very few, the reduction of iron is insufficient, and if the consumption of reducing agent is excessive, can cause reducing agent
Waste.
Reducing and smelting device 200
According to embodiment of the present utility model, reducing and smelting device 200 has mixed material agglomerate entrance 201 and metallization
Lump outlet 202, wherein, mixed material agglomerate entrance 201 is connected with mixed material lump outlet 104, reducing and smelting device 200
For mixed material agglomerate is carried out reducing and smelting process, obtain metallized briquette, thus, processed by reducing and smelting, make vanadium
The oxide of the iron in slag is reduced.
According to embodiment of the present utility model, the temperature that reducing and smelting is processed can be 1000-1200 degree Celsius.This temperature
Under, sodium salt is not volatile, and reduction effect is good, and the degree of metalization of metallized briquette is high.If the too high volatilization that can cause sodium of temperature,
The reduction effect of the too low iron of temperature is poor, and degree of metalization is low.
According to embodiment of the present utility model, reducing and smelting device is not particularly limited, and those skilled in the art can root
Selected according to being actually needed.According to some embodiments of the present utility model, reducing and smelting device can be selected from rotary hearth furnace, return
At least one of rotary kiln, car-bottom furnace and tunnel cave
Molten point of separator 300
According to embodiment of the present utility model, molten point separator 300 has metallized briquette entrance 301, reduced iron goes out
Mouth 302 and rich vanadium slag export 303, and wherein, metallized briquette entrance 301 is connected with metallized briquette outlet 202, and molten point separates dress
Put 300 for metallized briquette is carried out molten office reason, obtain reduced iron and rich vanadium slag.Thus, separate from metallized briquette
Go out reduced iron, the content of vanadium in rich vanadium slag improves, and so that the rate of recovery of vanadium is improved.According to embodiment of the present utility model, reduced iron
For reducing molten iron, can be used as steelmaking feed.
According to embodiment of the present utility model, the temperature of molten office reason can be 1400-1700 degree Celsius.Thus, melt and divide
Efficiency high, effect is good.
According to embodiment of the present utility model, a molten point separator is not particularly limited, and those skilled in the art can root
Selected according to being actually needed.According to some embodiments of the present utility model, melting separator can be electric furnace, can be with
Combustion gas is molten point of stove of fuel or molten point of stove of other forms fuel.
Oxidizing roasting device 400
According to embodiment of the present utility model, oxidizing roasting device 400 has rich vanadium slag entrance 401 and the outlet of vanadium slag grog
402, wherein, rich vanadium slag entrance 401 is connected with rich vanadium slag outlet 303, for rich vanadium slag is carried out oxidizing roasting process, obtains vanadium
Slag grog.Thus, the vanadium in rich vanadium slag is oxidized to the vanadium of positive pentavalent, only pentavalent sodium vanadate be only water-soluble, thus, be easy to
Follow-up vanadium extraction is processed, and the rate of recovery of vanadium is high.
According to embodiment of the present utility model, oxidizing roasting equipment is not particularly limited, and those skilled in the art can root
Selected according to being actually needed, according to specific embodiment of the utility model, oxidizing roasting device can be rotary hearth furnace and revolution
At least one of kiln.Thus, oxidizing roasting efficiency high, effect is good.
Vanadium extraction device 500
According to embodiment of the present utility model, vanadium extraction device 500 has vanadium slag grog entrance 501, vanadic anhydride outlet
502 and slag-drip opening 503, wherein, vanadium slag grog entrance 501 is connected with vanadium slag grog outlet 402, and vanadium extraction device 500 is for by vanadium
Slag grog carries out vanadium extraction process, obtains vanadic anhydride.Thus, separate from vanadium slag grog and obtain vanadic anhydride.
According to embodiment of the present utility model, vanadium extraction device 500 is wet method vanadium extraction device, and wet method vanadium extraction device is used for vanadium
Slag grog carries out leaching, precipitation and calcination processing, obtains vanadic anhydride.Thus, vanadium extraction effect is good, efficiency high.
According to the utility model embodiment, vanadium slag is carried out with the system of integrated treatment, vanadium slag is mixed with reducing agent, sodium salt
First pass through reducing and smelting device after conjunction and carry out reducing and smelting and obtain granular metal, then reclaimed in vanadium slag by molten point of separator
Reduced iron, wherein, the flux that sodium salt is processed as reducing and smelting, be conducive to improving degree of metalization and the rate of recovery of iron, and
Form water-soluble sodium vanadate with vanadium oxide in the oxidation processes of subsequently rich vanadium slag, reclaim the vanadium slag after iron, containing in vanadium slag
Iron composition reduces, and makes vanadium obtain enrichment and obtains rich vanadium slag, be conducive to the extraction of vanadium, rich vanadium slag carries out oxygen by oxidizing roasting device
Change calcination process, obtain water-soluble sodium vanadate, then the vanadic anhydride in rich vanadium slag is extracted by vanadium extraction device.Thus, this is
System first carry iron again vanadium extraction it is achieved that in vanadium slag valuable element iron and vanadium step by step arithmetic, and, the rate of recovery of iron and vanadium is all notable
Improve.
For the ease of understanding the aforesaid system that vanadium slag is carried out with integrated treatment, here provides one kind to utilize aforesaid system
The method that integrated treatment is carried out to vanadium slag.With reference to Fig. 1, according to embodiment of the present utility model, to vanadium slag, General Office is carried out to this
The method of reason explains, and the method includes:
S100 batch mixing agglomeration is processed
According to embodiment of the present utility model, vanadium slag, sodium salt and reducing agent are delivered to batch mixing agglomeration device and are mixed
Material agglomeration is processed, and obtains mixed material agglomerate.Inventor with the addition of sodium salt in the feed, and sodium salt is as helping that reducing and smelting is processed
Flux, is conducive to improving the degree of metalization of iron and the rate of recovery, and in the oxidation processes of subsequently rich vanadium slag with vanadium oxide shape
Become water-soluble sodium vanadate, be conducive to reclaiming vanadium.
According to embodiment of the present utility model, the iron-holder of vanadium slag is not less than 20%.Thus, the rate of recovery of iron is high, if
In vanadium slag, iron content is too low, and the value of vanadium slag is low, loses the meaning using this method step by step arithmetic iron and vanadium.
According to embodiment of the present utility model, sodium salt be in sodium carbonate, sodium chloride, sodium acid carbonate and sodium sulphate extremely
Few one kind.Thus, sodium salt flux and vanadium extraction effect good.
According to embodiment of the present utility model, the species of reducing agent is not particularly restricted, and those skilled in the art are permissible
Selected according to actual needs.According to preferred embodiment of the present utility model, reducing agent is selected from reduction coal, semicoke and coke
At least one.Thus, reduction effect is good, and, the price of reducing agent is low, advantageously reduces production cost.
According to preferred embodiment of the present utility model, vanadium slag, sodium salt and reducing agent can by weight for 100:(10～
30): (5～12) carry out batch mixing agglomeration process.Thus, in the mixed material agglomerate of this ratio mixing preparation, reduction effect is good, gold
Belong to rate high, and the temperature of reducing and smelting is low.If the consumption of sodium salt is very few, the reaction generating sodium vanadate is insufficient, and sodium
The consumption of salt is excessive, and excessive sodium salt enters into containing in vanadium solution in follow-up water logging goes out, and may pollute precipitation product.With
When, if the consumption of reducing agent is very few, the reduction of iron is insufficient, and if the consumption of reducing agent is excessive, can cause reducing agent
Waste.
S200 reducing and smelting is processed
According to embodiment of the present utility model, using reducing and smelting device, mixed material agglomerate is carried out at reducing and smelting
Reason, obtains metallized briquette.Processed by reducing and smelting, so that the oxide of the iron in vanadium slag is reduced.
According to embodiment of the present utility model, the temperature that reducing and smelting is processed can be 1000-1200 degree Celsius.This temperature
Under, sodium salt is not volatile, and reduction effect is good, and the degree of metalization of metallized briquette is high.If the too high volatilization that can cause sodium of temperature,
The reduction effect of the too low iron of temperature is poor, and degree of metalization is low.
S300 melts office reason
According to embodiment of the present utility model, metallized briquette is delivered to a molten point separator and carries out molten office reason, obtain
To reduced iron and rich vanadium slag.Thus, isolate reduced iron from metallized briquette, so that vanadium is enriched with, five oxidation in rich vanadium slag
Two vanadium grades increase by more than 5%, are conducive to follow-up roasting and wet underwater welding, so that the rate of recovery of vanadium is improved.New according to this practicality
The embodiment of type, reduced iron is reduction molten iron, can be used as steelmaking feed.
Wherein it is desired to explanation, " rich vanadium slag " mentioned herein is for the vanadium slag in raw material, former
Vanadium slag in material is processed by reducing and smelting and melts office reason makes iron content composition therein be separated, and correspondingly, vanadium obtains
Enrichment, and then, the content of vanadium increases with respect to the vanadium slag in raw material, define rich vanadium slag.According to of the present utility model
Embodiment, the content of rich Vanadium in Vanadium Residue is 17%～32% (with v2o5Mass fraction meter).
According to embodiment of the present utility model, the temperature of molten office reason can be 1400-1700 degree Celsius.Thus, melt and divide
Efficiency high, effect is good.
S400 oxidizing roasting is processed
According to embodiment of the present utility model, rich vanadium slag is delivered to oxidizing roasting device and carries out oxidizing roasting process, obtain
To vanadium slag grog.Thus, the vanadium in rich vanadium slag is oxidized to the vanadium of positive pentavalent, only pentavalent sodium vanadate be only water-soluble, thus,
It is easy to follow-up vanadium extraction to process, the rate of recovery of vanadium is high.
According to embodiment of the present utility model, in vanadium slag grog, the vanadic acid that at least 90% vanadium is positive pentavalent for chemical valence
Sodium.Because it is water-soluble to only have the sodium vanadate of positive pentavalent to be only in numerous valence states of vanadium, can be by follow-up water logging vanadium extraction.Its
In, sodium vanadate is at least one in sodium vanadate, sodium pyrovanadate and sodium metavanadate.
According to embodiment of the present utility model, the processing mode that oxidizing roasting is processed is not particularly limited, as long as can be by
Vanadium in rich vanadium slag is oxidized to positive pentavalent.According to some embodiments of the present utility model, can directly in the molten state
Oxygen supply is forced to rich vanadium slag, so that the vanadium in rich vanadium slag is aoxidized and form water-soluble sodium vanadate；According to other realities of the present utility model
Apply example, after the cooling of rich vanadium slag, crushing, then carry out oxidizing roasting, form water-soluble sodium vanadate.
According to embodiment of the present utility model, oxidizing roasting reaction condition is not particularly limited, and those skilled in the art can
To be selected according to actual needs.According to preferred embodiment of the present utility model, oxidizing roasting temperature is 400 DEG C～900 DEG C.
Inventor is found through experiments, and in this temperature range, it is the most thorough that the oxidation reaction of high price sodium vanadate is carried out, on the one hand,
Oxidation reaction is exothermic reaction, so high temperature is unfavorable for the carrying out of oxidation reaction, on the other hand, temperature is too low to again limit oxidation
The kinetic factor of reaction, when sintering temperature is 400 DEG C～900 DEG C, the reaction rate of the oxidation reaction of high price sodium vanadate is fast, effect
Really good.
S500 vanadium extraction is processed
According to embodiment of the present utility model, using vanadium extraction device, vanadium slag grog is carried out vanadium extraction process, obtain five oxidations
Two vanadium.Thus, separate from vanadium slag grog and obtain vanadic anhydride.
According to some embodiments of the present utility model, it can be at existing water logging-precipitation-calcine technology that this vanadium extraction is processed
Reason, vanadium extraction effect is good, efficiency high.Below with reference to specific embodiment, the utility model is illustrated, it should be noted that this
A little embodiments are merely illustrative, and it is not intended that to restriction of the present utility model.
Embodiment 1
With certain vanadium extraction steel mill vanadium slag domestic as raw material, carry out the integrated treatment of vanadium slag using method of the present utility model,
The schematic flow sheet of the method as shown in figure 1, the structural representation of the total system of vanadium slag as shown in Fig. 2 wherein, this vanadium
Slag contains full iron 35%, vanadic anhydride 16%, and concrete processing method is as follows:
(1) (fixed carbon contains by vanadium slag and sodium carbonate (pure, the content 99.5% of analysis) and reduction coal to utilize batch mixing agglomeration device
Amount 78%), vanadium slag by weight ratio: sodium carbonate: reduction coal=100:15:6 carries out dispensing batch mixing, obtain mixed material agglomerate.
(2) mixed material agglomerate addition rotary hearth furnace is carried out direct-reduction to smelt, 1000 DEG C of smelting temperature, the duration of heat
45min, obtains metallized pellet, and the degree of metalization of this metallized pellet is 85%.
(3) melt a point stove metallized pellet is carried out under the conditions of 1500 DEG C a molten point melting and obtain molten iron and molten state richness vanadium
Slag, wherein, the full Iron grade of molten iron is 98.5%, and this molten iron can be used as steelmaking feed, and molten state richness vanadium slag contains five oxidations two
Vanadium 23%.
(4) oxygen supply oxidation is forced to molten state richness vanadium slag, when pentavalent vanadium accounts for the ratio of full vanadium more than 90% in vanadium slag
Can oxygen feeding stop, obtain high price sodium vanadate grog, vanadium recovery 98% after cooling.
(5) utilize vanadium extraction device, the life of high price sodium vanadate grog is processed by existing ripe water logging-precipitation-calcine technology
Produce vanadic anhydride.
Embodiment 2
With certain vanadium extraction steel mill vanadium slag domestic as raw material, carry out the integrated treatment of vanadium slag using method of the present utility model,
The schematic flow sheet of the method as shown in figure 1, the structural representation of the total system of vanadium slag as shown in Fig. 2 wherein, this vanadium
Slag contains full iron 42%, vanadic anhydride 20%, and concrete processing method is as follows:
(1) utilize batch mixing agglomeration device that (vanadium slag and sodium sulphate (analyzing pure, content 99.5%) and semi-coke are fixed carbon content
82%), vanadium slag by weight ratio: sodium sulphate: semi-coke=100:25:9 carries out dispensing batch mixing, obtain mixed material agglomerate.
(2) mixed material agglomerate addition rotary hearth furnace is carried out direct-reduction to smelt, 1200 DEG C of smelting temperature, the duration of heat
1h, obtains metallized pellet, and the degree of metalization of this metallized pellet is 88%.
(3) metallized pellet is carried out under the conditions of 1600 DEG C a molten point melting using electric furnace and obtain molten iron and molten state richness vanadium
Slag, wherein, the full Iron grade of molten iron is 98.8%, and this molten iron can be used as steelmaking feed, and molten state richness vanadium slag contains five oxidations two
Vanadium 33%.
(4) oxygen supply oxidation is forced to molten state richness vanadium slag, when pentavalent vanadium accounts for the ratio of full vanadium more than 90% in vanadium slag
Can oxygen feeding stop, obtain high price sodium vanadate grog, vanadium recovery 95% after cooling.
(5) utilize vanadium extraction device, the life of high price sodium vanadate grog is processed by existing ripe water logging-precipitation-calcine technology
Produce vanadic anhydride.
Embodiment 3
With certain vanadium extraction steel mill vanadium slag domestic as raw material, carry out the integrated treatment of vanadium slag using method of the present utility model,
The schematic flow sheet of the method as shown in figure 1, the structural representation of the total system of vanadium slag as shown in Fig. 2 wherein, this vanadium
Slag contains full iron 25%, vanadic anhydride 14%, and concrete processing method is as follows:
(1) utilize batch mixing agglomeration device that (vanadium slag and sodium chloride (analyzing pure, content 99.5%) and coke are fixed carbon content
86%), vanadium slag by weight ratio: sodium chloride: coke=100:20:12 carries out dispensing batch mixing, obtain mixed material agglomerate.
(2) mixed material agglomerate addition tunnel cave is carried out direct-reduction to smelt, 1150 DEG C of smelting temperature, the duration of heat
1.5h, obtains metallized pellet, and the degree of metalization of this metallized pellet is 83%.
(3) metallized pellet is carried out under the conditions of 1650 DEG C a molten point melting using a molten point stove and obtain molten iron and molten state richness
Vanadium slag, wherein, the full Iron grade of molten iron is 99.2%, and this molten iron can be used as steelmaking feed, and molten state richness vanadium slag contains five oxidations
Two vanadium 18%.
(4) crush after the cooling of molten state richness vanadium slag and carry out oxidizing roasting process in rotary kiln, 850 DEG C of sintering temperature, roasting
Burning time 1.5h, roasting obtains high price sodium vanadate grog after terminating, the ratio of pentavalent vanadium is 95%, vanadium recovery 96%.
(5) utilize vanadium extraction device, the life of high price sodium vanadate grog is processed by existing ripe water logging-precipitation-calcine technology
Produce vanadic anhydride.
Embodiment 4
With certain vanadium extraction steel mill vanadium slag domestic as raw material, carry out the integrated treatment of vanadium slag using method of the present utility model,
The schematic flow sheet of the method as shown in figure 1, the structural representation of the total system of vanadium slag as shown in Fig. 2 wherein, this vanadium
Slag contains full iron 30%, vanadic anhydride 15%, and concrete processing method is as follows:
(1) (fixed carbon contains by vanadium slag and sodium acid carbonate (pure, the content 99.5% of analysis) and coke to utilize batch mixing agglomeration device
Amount 86%), vanadium slag by weight ratio: sodium acid carbonate: coke=100:10:10 carries out dispensing batch mixing, obtain mixed material agglomerate.
(2) mixed material agglomerate addition rotary kiln is carried out direct-reduction to smelt, 1050 DEG C of smelting temperature, the duration of heat
2h, obtains metallized pellet, and the degree of metalization of this metallized pellet is 83.5%.
(3) metallized pellet is carried out under the conditions of 1450 DEG C a molten point melting using a molten point stove and obtain molten iron and molten state richness
Vanadium slag, wherein, the full Iron grade of molten iron is 98.3%, and this molten iron can be used as steelmaking feed, and molten state richness vanadium slag contains five oxidations
Two vanadium 20%.
(4) will be broken after molten state richness vanadium slag cooling, carry out oxidizing roasting process in rotary kiln, 900 DEG C of sintering temperature,
Roasting time 2h, roasting obtains high price sodium vanadate grog after terminating, the ratio of pentavalent vanadium is 99%, vanadium recovery 99%.
(5) utilize vanadium extraction device, the life of high price sodium vanadate grog is processed by existing ripe water logging-precipitation-calcine technology
Produce vanadic anhydride.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy describing with reference to this embodiment or example
Point is contained at least one embodiment of the present utility model or example.In this manual, the schematic table to above-mentioned term
State and be not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can be
Combine in an appropriate manner in any one or more embodiments or example.
While there has been shown and described that embodiment of the present utility model, it will be understood by those skilled in the art that:
Multiple changes, modification, replacement can be carried out to these embodiments in the case of without departing from principle of the present utility model and objective
And modification, scope of the present utility model limits by claim and its equivalent.
Claims (6)
1. a kind of system that vanadium slag is carried out with integrated treatment is it is characterised in that include:
Batch mixing agglomeration device, described batch mixing agglomeration device has vanadium slag entrance, sodium salt entrance, reducing agent entrance and mixture dough
Block exports；
Reducing and smelting device, described reducing and smelting device has mixed material agglomerate entrance and metallized briquette outlet, described mixed
Compound dough block entrance is connected with described mixed material lump outlet；
Molten point of separator, a described molten point separator has metallized briquette entrance, reduced iron outlet and rich vanadium slag outlet, institute
State metallized briquette entrance to be connected with the outlet of described metallized briquette, a described molten point separator has the first temperature controller,
Described first temperature controller controls the temperature of molten office reason to be 1400-1700 degree Celsius；
Oxidizing roasting device, described oxidizing roasting device has rich vanadium slag entrance and the outlet of vanadium slag grog, described richness vanadium slag entrance
Export with described richness vanadium slag and be connected；And
Vanadium extraction device, described vanadium extraction device has vanadium slag grog entrance, vanadic anhydride outlet and slag-drip opening, described vanadium slag grog
Entrance is connected with the outlet of described vanadium slag grog.
2. the system that vanadium slag is carried out with integrated treatment according to claim 1 is it is characterised in that described melt a point separator
For electric furnace or molten point of stove.
3. the system that vanadium slag is carried out with integrated treatment according to claim 1 is it is characterised in that described reducing and smelting device
It is at least one selected from rotary hearth furnace, rotary kiln, car-bottom furnace and tunnel cave.
4. the system that vanadium slag is carried out with integrated treatment according to claim 1 is it is characterised in that described reducing and smelting device
There is second temperature controller, described second temperature controller controls the temperature that reducing and smelting is processed to be 1000-1200 degree Celsius.
5. the system that vanadium slag is carried out with integrated treatment according to claim 1 is it is characterised in that described oxidizing roasting device
It is at least one selected from rotary hearth furnace and rotary kiln.
6. the system that vanadium slag is carried out with integrated treatment according to any one of claim 1-5 is it is characterised in that described vanadium extraction
Device is wet method vanadium extraction device.
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| CN201620586077.6U CN205907325U (en) | 2016-06-15 | 2016-06-15 | System for carry out integrated treatment to vanadium slag |
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| CN201620586077.6U CN205907325U (en) | 2016-06-15 | 2016-06-15 | System for carry out integrated treatment to vanadium slag |
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