CN105886787A - Method for recycling vanadium from vanadium-containing corundum slags - Google Patents
Method for recycling vanadium from vanadium-containing corundum slags Download PDFInfo
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- CN105886787A CN105886787A CN201610317201.3A CN201610317201A CN105886787A CN 105886787 A CN105886787 A CN 105886787A CN 201610317201 A CN201610317201 A CN 201610317201A CN 105886787 A CN105886787 A CN 105886787A
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- vanadium
- slag
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- aluminum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C35/00—Master alloys for iron or steel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention belongs to the field of metallurgy and particularly relates to a method for recycling vanadium from vanadium-containing corundum slags. A technical problem needing to be solved in the invention is to provide a method for recycling vanadium from ferrovanadium smelting vanadium-containing corundum slags. When corundum slags with a low vanadium content, produced in a ferrovanadium smelting process, are used as a fettling material to fettle a smelting electric furnace instead of part of magnesia, corundum slags with a high vanadium content, after being mixed with vanadium oxide, aluminum shots and iron grit in batches, are filled into the smelting electric furnace to carry out multi-phase arc smelting. When the vanadium contents in the slags in the first and second phases are separately reduced under 0.40% and 0.60%, slags are tapped. When the vanadium content in the slags in the third phase is reduced under 1.50%, slags and iron are simultaneously tapped, poured in an ingot mold and cooled. The method not only can recycle the vanadium in the vanadium-containing corundum slags and reduce the usage of fettling magnesia, but also can reduce the waste slag producing quantity of a smelting system.
Description
Technical field
The invention belongs to field of metallurgy, be specifically related to a kind of from containing the method reclaiming vanadium vanadium corundum slag.
Background technology
Vanadium iron is as the vanadium micro-alloying intermediate alloy being most widely used in steel smelting procedure, and its smelting process is mainly
Based on the thermal reduction (such as thermit reduction, silicothermic process and carbothermic method) containing barium oxide.Wherein thermit reduction is fitted
For using all trade mark vanadium irons of different valence state barium oxide to produce, it it is the most commonly used vanadium of application in current world wide
Ferroalloy smelting technique.The main garbage of this technique is corundum slag, and it is mainly composed of the aluminothermic reduction product Al of about 65%2O3,
The slag-making addition CaO of about 15%, 10～the lining wear MgO of 15%, and part V, Fe and other oxide impurities.
Owing to this slag system contains a large amount of Al2O3And MgO, cause system fusing point higher.For the process containing vanadium corundum slag, currently mainly
Recycling approach be as producing industrial ceramics, the resistance to material of low temperature and the former material of the steel-making low value-added product such as covering slag
Material is sold.Particularly when content of vanadium complete in corundum slag is higher, if it not being recycled, vanadium not only can be caused to provide
The significant wastage in source, also can increase the weight of environmental pressure and the sustainable development of vanadium iron industrial chain of vanadium iron smelting procedure further.
At present, vanadium iron smelting corundum slag comprehensive Utilization Ways Han vanadium focuses primarily upon the recovery of vanadium in slag and the resource of castaway slag.
Patent CN102560006B provides Application way and the pre-melted refining slag of a kind of ferrovanadium slag, ultimately forms and contains
12CaO·7Al2O3And/or 3CaO Al2O3The slag of phase, can be as the pre-melted refining slag meeting process for making after cooling.Specially
Profit CN102912158B provides and a kind of utilizes the method for vanadium iron in vanadium essence slag melting, and as raw materials for metallurgy, vanadium essence slag is carried out gold
Belong to melting, shorten technological process, reduce production cost.Patent CN103642988A provides one corundum slag and carries out steel
The method of crystal's refining, the method is directly used it for steel-making tundish refining procedure by fine setting corundum slag composition, is solved slag again
Utilizing question, and refining desulfuration is effective.
From the point of view of technology disclosed above, although what at present corundum slag smelted by vanadium iron can have certain application in field of metallurgy, but
Be its recycling level and disposal ability limited, be not met by vanadium iron and smelt the big quantity of slag, the demand efficiently utilized.Pin
The problems referred to above that there is prior art, the invention reside in offer one and can not only reclaim containing valuable element metal in vanadium corundum slag
Vanadium simultaneously can also the resource method containing vanadium corundum slag nearby.
Summary of the invention
The goal of the invention of the present invention be in order to during preparing vanadium iron from aluminothermic reduction produce containing in vanadium corundum slag reclaim vanadium,
Thus provide a kind of from containing the method reclaiming vanadium vanadium corundum slag.The method comprises the following steps:
A, every 4～6 heats are smelted after terminating, with containing vanadium corundum slag and magnesia, smelting furnace are carried out fettling；
B, with containing vanadium corundum slag, V2O3, aluminum, ferrum, Calx be raw material, used for three phases smelted, smelt when the first phase, the second phase
The most once slagging tap after end, after when the third phase, smelting terminates, slag ferrum is with going out, and is cast in ingot mould, i.e. obtains vanadium after cooling slagging-off
Ferroalloy；Wherein, the first phase the 1st tank with addition of containing vanadium corundum slag, need to not join used when aluminum amount is fettling containing with addition of extra aluminum
1.20～1.30 times that in vanadium corundum slag, the theoretical aluminum of vanadium consumes；In addition to the first phase the 1st tank, other every tanks also need extra with addition of aluminum,
Joining aluminum amount is containing in vanadium corundum slag 1.10～1.30 times of the theoretical consumption aluminum of vanadium in every tank.
Preferably, in said method step a, during fettling, the addition containing vanadium corundum slag accounts for the 30～70% of fettling raw material total amount.
Preferably, in said method step a, what fettling was used is less than 2.0% containing content of vanadium complete in vanadium corundum slag, and granularity is at 10mm
Below.
Preferably, in said method step b, what smelting was used is 2.0～7.0% containing content of vanadium complete in vanadium corundum slag, and granularity exists
Below 10mm.
Preferably, in said method step b, the first phase, the second phase, the V of the third phase2O3Weight ratio is 4 2～3 1～2；
The V of each issue2O3It is 100 30～60 with the corundum slag weight ratio containing vanadium；The V of each issue2O3With aluminum weight ratio be 100 20～
65；The V of each issue2O3It is 100 53～65 with ferrum weight ratio；The V of each issue2O3It is 100 15～30 with Calx weight ratio.
Further, in said method step b, first phase V2O3It is 100 45～65 with aluminum weight ratio, second phase V2O3
It is 100 35～50 with aluminum weight ratio, third phase V2O3It is 100 20～40 with aluminum weight ratio.
Preferably, in said method step b, slag tap when content of vanadium complete in first phase slag is reduced to below 0.40%, go out the quantity of slag
Account for the 80～90% of total quantity of slag；Slag tap when content of vanadium complete in second phase slag is reduced to below 0.60%, go out the quantity of slag and account for total quantity of slag
80～90%；Slag tap when content of vanadium complete in third phase slag is reduced to below 1.5%.
Further, in said method step b, be respectively the first phase, the second phase, the duration of heat third phase 80～120min,
40～70min, 30～50min.
The inventive method reasonably adds containing vanadium corundum slag in vanadium iron is smelted, and has optimized and revised the adding proportion of raw material when smelting
Etc. parameter, not only solve the environmental problem piled up containing vanadium corundum slag and cause, and can reclaim efficiently containing in vanadium corundum slag
Vanadium, achieve good technique effect.
Detailed description of the invention
A kind of from aluminothermic reduction prepare during vanadium iron produce containing the method reclaiming vanadium vanadium corundum slag.The present invention uses such as
Lower step realizes:
A, for quantity-produced electric furnace, every 4～6 heats are smelted complete, and next heat uses containing vanadium firm before smelting
Beautiful slag replaces part magnesia, as mending material, electric furnace is carried out fettling；
Preferably, the corundum slag containing vanadium that fettling uses accounts for the 30～70% of fettling raw material total amount.
Preferably, fettling use containing content of vanadium complete in vanadium corundum slag below 2.0%, granularity is at below 10mm.
B, the corundum slag containing vanadium is crushed, sieves, be transported to vanadium iron and smelt mixed material area and smelt；
Preferably, smelt employing is 2.0～7.0% containing content of vanadium complete in vanadium corundum slag, and granularity is at below 10mm.
C, with containing vanadium corundum slag, aluminum, ferrum, Calx, V2O3For raw materials for metallurgy, use three phase method vanadium iron smelting processes；First
Phase the 1st tank with addition of containing vanadium corundum slag, only need to not add aluminum, ferrum, Calx, V2O3Carry out striking smelting；Then it is sequentially added into
Raw materials for metallurgy in one phase residue batch can and second phase batch can；Smelt after terminating the most once slag tap when the first phase, the second phase；
Adding third phase raw materials for metallurgy, after when the third phase, smelting terminates, slag ferrum is with going out, and is dumped into by metallurgical slag gold from electric furnace
Water in ingot mould, and cool down；Wherein, the first phase the 1st tank need to be with addition of additional reducing agent aluminum, and joining aluminum amount is to contain used by fettling
In vanadium corundum slag 1.20～1.30 times (i.e. correspondence joins aluminum coefficient is 1.20～1.30) of the theoretical aluminum consumption of vanadium；In addition to the 1st tank, its
His every tank raw material needs additionally with addition of reducing agent aluminum, join correspondence when aluminum amount is to smelt and consume containing the theoretical aluminum of vanadium in vanadium corundum slag
1.10～1.30 (i.e. correspondence joins aluminum coefficient is 1.10～1.30).
Preferably, during smelting, first, second, third phase V2O3Add according to weight ratio 4 2～3 1～2 ratio, each issue
V2O3It is 100 30～60 with the corundum slag weight ratio containing vanadium；The V of each issue2O3It is 100 20～65 with aluminum weight ratio；
The V of each issue2O3It is 100 53～65 with ferrum weight ratio；The V of each issue2O3It is 100 15～30 with Calx weight ratio.
Further, first phase V2O3It is 100 45～65 with aluminum weight ratio, second phase V2O3With aluminum weight ratio be 100 35～
50, third phase V2O3It is 100 20～40 with aluminum weight ratio.
Preferably, when content of vanadium complete in the first phase, second phase slag is reduced to 0.40% and less than 0.60%, one is respectively carried out
Secondary tapping operation, goes out the quantity of slag and accounts for the 80～90% of total quantity of slag；When in third phase slag, TV content is reduced to below 1.50%, slag
Ferrum is with going out.
Preferably, it is respectively 80～120min, 40～70min, 30～50min each duration of heat phase.
Tear stove open to watering ingot mould after d, cooling, remove vanadium iron and smelt corundum slag, obtain vanadium iron cake.
In the inventive method step a, in concrete production process, it not to be required for containing vanadium corundum slag before every 1 heat is smelted
Carry out fettling with magnesia, but every 4～6 heats are smelted and carried out a fettling after terminating, then smelt 4～6 heats and carry out again
Fettling, by that analogy.So, after after fettling, the 1st heat smelting terminates, it is not necessary to carry out fettling, directly carry out
Next heat is smelted, and does not the most add corundum slag fettling, then the 1st tank of this heat is without adding extra reducing agent
Aluminum, is shown in embodiment 2；When after fettling next time ensuing 1st heat again in the 1st tank with addition of extra reducing agent aluminum, see
Embodiment 1,3,4, by that analogy.
It should be noted that in the inventive method step b, define the V of each issue2O3It is 100 20～65 with aluminum weight ratio.
Preferably, first phase V2O3It is 100 45～65 with aluminum weight ratio, second phase V2O3It is 100 35～50 with aluminum weight ratio,
Third phase V2O3It is 100 20～40 with aluminum weight ratio；Herein the addition of aluminum do not include needs additionally with addition of reducing agent aluminum.
In the inventive method, not making specified otherwise, content, ratio etc. refer both to percentage by weight.
Below in conjunction with embodiment, the detailed description of the invention of the present invention is further described, the most therefore limits the present invention to institute
Among the scope of embodiments stated.
Embodiment 1
1, fettling: respectively by content of vanadium be 1.5% corundum slag 100 parts, 200 parts of fettling magnesia broken after, mixture is uniform, right
Electric furnace carries out fettling operation, and extra with addition of 1 part of reducing agent aluminum in corresponding 1st tank raw material.
2, smelt: smelting process was divided into for three phases, and the Vanadium sesquioxide weight ratio of three phases is 422, the first phase, second phase smelting
The most once slagging tap after refining, after third phase smelting, slag ferrum is with going out.
A, the smelting first phase: by 100 parts of V2O3, 53 parts of aluminium shot, 63 parts of abrasive grits, 15 parts of Calx as electrode starting the arc material,
After insertion electrode reaction is complete；Add 300 parts of V2O3, 90 parts of content of vanadium be the corundum slag of 3.50%, 160 parts of aluminium shots, 190
Part abrasive grit, 45 parts of Calx carry out first phase electric arc melting, and be energized 105min, and in slag, content of vanadium is 0.32% to slag tap, and slags tap
The quantity of slag 480 parts.
B, the smelting second phase: add 200 parts of V2O3, 60 parts of content of vanadium be the corundum slag of 3.50%, 82 parts of aluminium shots, 125 parts
Abrasive grit, 30 parts of Calx carry out second phase electric arc melting, and be energized 45min, and in slag, content of vanadium is 0.54% to carry out second time and slag tap,
The quantity of slag of slagging tap 300 parts.
C, the smelting third phase: add 200 parts of V2O3, 60 parts of content of vanadium be the corundum slag of 3.50%, 56 parts of aluminium shots, 125 parts
Abrasive grit, 30 parts of Calx carry out third phase electric arc melting, and be energized 40min, and when in slag, content of vanadium is reduced to 1.23%, slag ferrum is with going out.
3, after metallurgical slag gold is dumped into watering in ingot mould from electric furnace, cools down 40min, be transported to water-cooled district.
Embodiment 2
1, for just carrying out the body of heater of fettling, upper one heat smelt complete after directly carry out the second heat smelting.
2, smelting: smelting process was divided into for three phases, and three phase vanadium oxide weight ratios are 422, the first phase, the second phase smelt complete
After the most once slag tap, the third phase smelt after slag ferrum with go out.
A, the smelting first phase: by 100 parts of V2O3, 46 parts of aluminium shot, 63 parts of abrasive grits, 25 parts of Calx are as electrode starting the arc material；
After insertion electrode reaction is complete, add 300 parts of V2O3, 120 parts of content of vanadium be the corundum slag of 4.20%, 143 parts of aluminium shots, 190
Part abrasive grit, 75 parts of Calx carry out first phase electric arc melting, and be energized 116min, and in slag, content of vanadium is 0.43% to slag tap, and slags tap
470 parts.
B, the smelting second phase: add 200 parts of V2O3, 80 parts of content of vanadium be the corundum slag of 4.20%, 82 parts of aluminium shots, 125 parts
Abrasive grit, 50 parts of Calx carry out second phase electric arc melting, and be energized 46min, and in slag, content of vanadium is 0.55% to slag tap, and slag tap 330
Part.
C, the smelting third phase: add 200 parts of V2O3, 80 parts of content of vanadium be the corundum slag of 4.20%, 77.5 parts of aluminium shots, 125
Part abrasive grit, 50 parts of Calx carry out third phase electric arc melting, and be energized 43min, and when in slag, content of vanadium is 1.15%, slag ferrum is with going out.
3, after metallurgical slag gold is dumped into watering in ingot mould from electric furnace, cools down 40min, be transported to water-cooled district.
Embodiment 3
1, fettling: respectively by content of vanadium be 1.50% corundum slag 150 parts, mixture is uniform, to smelting after 150 parts of fettling magnesia is broken
Refining electric furnace carries out fettling operation, and extra with addition of 1.5 parts of reducing agent aluminum in corresponding 1st tank raw material.
2, smelt: smelting process three phase vanadium oxide weight ratio is 431, after the first phase, second phase smelting, respectively carry out one
Secondary slag tap, the third phase smelt after slag ferrum with going out.
A, the smelting first phase: by 100 parts of V2O3, 56 parts of aluminium shot, 63 parts of abrasive grits, 30 parts of Calx are as electrode starting the arc material；
After insertion electrode reaction is complete, add 300 parts of V2O3, 150 parts of content of vanadium be the corundum slag of 3.90%, 166 parts of aluminium shots, 190
Part abrasive grit, 90 parts of Calx carry out first phase electric arc melting, and be energized 98min, and in slag, content of vanadium is reduced to when 0.28% slag tap,
The quantity of slag of slagging tap 490 parts.
B, the smelting second phase: add 300 parts of V2O3, 150 parts of content of vanadium be the corundum slag of 3.90%, 121 parts of aluminium shots, 190
Part abrasive grit, 90 parts of Calx carry out second phase electric arc melting, and be energized 55min, the second time when content of vanadium is reduced to 0.48% in slag
Slag tap, the quantity of slag of slagging tap 340 parts.
C, the smelting third phase: add 100 parts of V2O3, 50 parts of content of vanadium be the corundum slag of 3.90%, 15.5 parts of aluminium shots, 63 parts
Abrasive grit, 30 parts of Calx carry out third phase electric arc melting, and be energized 34min, and when in slag, content of vanadium is reduced to 1.12%, slag ferrum is with going out.
3, after metallurgical slag gold is dumped into watering in ingot mould from electric furnace, 30min is stood.
Embodiment 4
1, fettling: respectively by content of vanadium be 1.50% corundum slag 150 parts, mixture is uniform, to smelting after 150 parts of fettling magnesia is broken
Refining electric furnace carries out fettling operation, and extra with addition of 1.5 parts of reducing agent aluminum in corresponding 1st tank raw material.
2, smelt: smelting process three phase vanadium oxide weight ratio is 431, after the first phase, second phase smelting, respectively carry out one
Secondary slag tap, the third phase smelt after slag ferrum with going out.
A, the smelting first phase: by 100 parts of V2O3, 50 parts of aluminium shot, 63 parts of abrasive grits, 30 parts of Calx are as electrode starting the arc material；
After insertion electrode reaction is complete, add 300 parts of V2O3, 150 parts of content of vanadium be the corundum slag of 3.70%, 153 parts of aluminium shots, 190
Part abrasive grit, 90 parts of Calx carry out first phase electric arc melting, and be energized 120min, in slag, content of vanadium is reduced to when 0.38% slag tap, and goes out
Slag 500 parts.
B, the smelting second phase: add 300 parts of V2O3, 150 parts of content of vanadium be the corundum slag of 3.70%, 128 parts of aluminium shots, 190
Part abrasive grit, 90 parts of Calx carry out second phase electric arc melting, and be energized 70min, and when in slag, content of vanadium is reduced to 0.57%, second time goes out
Slag, slags tap 400 parts.
C, the smelting third phase: add 100 parts of V2O3, 100 parts of content of vanadium be the corundum slag of 3.70%, 27 parts of aluminium shots, 63 parts
Abrasive grit, 30 parts of Calx carry out third phase electric arc melting, and be energized 45min, and when in slag, content of vanadium is reduced to 1.30%, slag ferrum is with going out.
3, after metallurgical slag gold is dumped into watering in ingot mould from electric furnace, stands 30min, and be transported to water-cooled district.
Comparative example
1, fettling: the magnesia after using 300 parts to crush carries out fettling to electric furnace.
2, smelt: smelting process three phase vanadium oxide weight ratio is 422, after the first phase, second phase smelting, respectively carry out one
Secondary slag tap, the third phase smelt after slag ferrum with going out.
A, the smelting first phase: by 400 parts of V2O3, add electric furnace after 199 parts of aluminium shot, 250 parts of abrasive grits, 80 parts of Calx mixings
In, and insert electrode and carry out first phase melting, be energized 90min, and in slag, content of vanadium is reduced to 0.42% and slags tap, the quantity of slag of slagging tap
350 parts.
B, the smelting second phase: add 200 parts of V2O3, 79 parts of aluminium shot, 125 parts of abrasive grits, 40 parts of Calx carry out second phase electric arc
Melting, be energized 50min, and when in slag, content of vanadium is reduced to 0.62%, second time is slagged tap, and slags tap 250 parts.
C, the smelting third phase: add 200 parts of V2O3, 58 parts of aluminium shot, 125 parts of abrasive grits, 40 parts of Calx carry out third phase electric arc
Melting, be energized 40min, and when in slag, content of vanadium is reduced to 1.50%, slag ferrum is with going out.
Table 1
| Technical specification | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative example |
| Average vanadium damage/% in slag | 2.32 | 2.49 | 2.30 | 2.73 | 2.37 |
| Containing Vanadium in Vanadium Residue content/% | 3.50 | 4.20 | 3.90 | 3.70 | -- |
| Containing the response rate/% of vanadium in vanadium corundum slag | 82.5 | 76.4 | 87.1 | 85.8 | -- |
| Corundum slag reclaims the proportion/% of vanadium | 1.50 | 1.95 | 2.36 | 2.14 | -- |
| Conduction time/min | 190 | 205 | 187 | 235 | 180 |
In summary it can be seen, the present invention adds vanadium iron in vanadium iron field of smelting and smelts the corundum slag Han vanadium, and reasonably have adjusted each
Individual parameter, make by with conventional method same consumption energy on the premise of, vanadium loss with existing methodical vanadium loss quite, and is additionally returned
Having received containing the vanadium in vanadium corundum slag, discarded corundum slag smelted by the most substantial amounts of vanadium iron that consumes nearby.So, the inventive method carries
One has been supplied preferably to reclaim the method containing the vanadium in vanadium corundum slag.
Claims (8)
1. one kind from containing the method reclaiming vanadium vanadium corundum slag, it is characterised in that: comprise the following steps:
A, every 4～6 heats are smelted after terminating, with containing vanadium corundum slag and magnesia, smelting furnace are carried out fettling；
B, with containing vanadium corundum slag, V2O3, aluminum, ferrum, Calx be raw material, used for three phases smelted, smelt when the first phase, the second phase
The most once slagging tap after end, after when the third phase, smelting terminates, slag ferrum is with going out, and is cast in ingot mould, i.e. obtains vanadium after cooling slagging-off
Ferroalloy；Wherein, the first phase the 1st tank with addition of containing vanadium corundum slag, need to not join used when aluminum amount is fettling containing with addition of extra aluminum
1.20～1.30 times that in vanadium corundum slag, the theoretical aluminum of vanadium consumes；In addition to the first phase the 1st tank, other every tanks also need extra with addition of aluminum,
Joining aluminum amount is containing in vanadium corundum slag 1.10～1.30 times of the theoretical consumption aluminum of vanadium in every tank.
It is the most according to claim 1 from containing the method reclaiming vanadium vanadium corundum slag, it is characterised in that: in step a, fettling
Time account for the 30～70% of fettling raw material total amount containing the addition of vanadium corundum slag.
It is the most according to claim 1 from containing the method reclaiming vanadium vanadium corundum slag, it is characterised in that: in step a, fettling
Used is less than 2.0% containing content of vanadium complete in vanadium corundum slag, and granularity is at below 10mm.
It is the most according to claim 1 from containing the method reclaiming vanadium vanadium corundum slag, it is characterised in that: in step b, smelt
Being used is 2.0～7.0% containing content of vanadium complete in vanadium corundum slag, and granularity is at below 10mm.
It is the most according to claim 1 from containing the method reclaiming vanadium vanadium corundum slag, it is characterised in that: in step b, first
Phase, the second phase, the V of the third phase2O3Weight ratio is 4 2～3 1～2；The V of each issue2O3Equal with the corundum slag weight ratio containing vanadium
It is 100 30～60；The V of each issue2O3It is 100 20～65 with aluminum weight ratio；The V of each issue2O3It is with ferrum weight ratio
100 53～65；The V of each issue2O3It is 100 15～30 with Calx weight ratio.
It is the most according to claim 5 from containing the method reclaiming vanadium vanadium corundum slag, it is characterised in that: in step b, first
Phase V2O3It is 100 45～65 with aluminum weight ratio, second phase V2O3It is 100 35～50 with aluminum weight ratio, third phase V2O3
It is 100 20～40 with aluminum weight ratio.
It is the most according to claim 1 from containing the method reclaiming vanadium vanadium corundum slag, it is characterised in that: in step b, when
In one phase slag, full content of vanadium is reduced to when less than 0.40% slag tap, and goes out the quantity of slag and accounts for the 80～90% of total quantity of slag；When complete in second phase slag
Content of vanadium is reduced to when less than 0.60% slag tap, and goes out the quantity of slag and accounts for the 80～90% of total quantity of slag；When in third phase slag, full content of vanadium reduces
Slag tap during to less than 1.5%.
8. according to described in claim 1 or 7 from containing the method reclaiming vanadium vanadium corundum slag, it is characterised in that: in step b,
The first phase, the second phase, the duration of heat third phase are respectively 80～120min, 40～70min, 30～50min.
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| CN107058764A (en) * | 2017-04-17 | 2017-08-18 | 攀钢集团研究院有限公司 | A kind of method that vanadium is reclaimed from corundum slag |
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