CN102912158A - Method for smelting ferrovanadium by fine vanadium slag - Google Patents
Method for smelting ferrovanadium by fine vanadium slag Download PDFInfo
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Abstract
The invention relates to a method for smelting ferrovanadium by fine vanadium slag, comprising the following steps: mixing steel scrap, vanadium pentoxide, fine vanadium slag, aluminum powder and silicon powder uniformly, adding the mixed materials into an electric arc furnace, smelting externally, igniting to make the mixed materials react to generate ferrovanadium and furnace slag, mixing vanadium pentoxide and lime uniformly in the reduction period by adopting the electric furnace process, adding the mixture into the electric arc furnace to melt the mixture into the molten state, adding ferrosilicon and ferro-silico aluminium depleted furnace slag, deslagging when the content of vanadium in the furnace slag is less than 0.35%, adding vanadium pentoxide and lime into the electric arc furnace, heating the electric arc furnace to refine, sampling, analyzing, and casting by using the steel ladle if the sample is up to the standard to obtain the ferrovanadium. The flows of the process for smelting ferrovanadium by fine vanadium slag are reduced, the production cost is lowered, energy is saved, and no pollution is caused to environment.
Description
Technical field
The invention belongs to field of metallurgy, particularly a kind of method of utilizing vanadium iron in the smart slag melting of vanadium.
Background technology
Vanadium iron can change the physical property of steel as a kind of important alloy addition of iron and steel, the intensity of raising steel, toughness, ductility, thermotolerance etc., and it is widely used.Vanadium iron generally is divided into three trades mark such as FeV40, FeV50, FeV80.
Vanadium titano-magnetite is the essential mineral resource of vanadium, and vanadium titano-magnetite obtains the ferrovanadium concentrate through ore dressing, smelts into vanadium-bearing hot metal, converter oxidation blowing, and vanadium obtains vanadium slag mutually through entering slag after the abundant enrichment, and the general vanadiumcontent of vanadium slag is 10%～24%.
Vanadium slag is mainly for the production of Vanadium Pentoxide in FLAKES, vanadium slag obtains the smart slag of vanadium behind fragmentation, ball milling, iron removal by magnetic separation, the smart slag of vanadium is through peroxidation, sodium roasting, leaching, precipitation, generate ammonium poly-vanadate or ammonium meta-vanadate, ammonium poly-vanadate or ammonium meta-vanadate are freed ammonium, fusing, crystallization through dewatering, dividing, and obtain product sheet vanadium (sheet V
2O
5); Ammonium poly-vanadate or Vanadium Pentoxide in FLAKES also can be produced V by reduction method
2O
3
At present, the vanadium iron method mainly contains electro-silicothermic process, the outer thermite process of stove and electro-aluminothermic process in the production both at home and abroad.Electro-silicothermic process is mainly with V
2O
5(or V
2O
3), lime, steel cuttings (iron powder), ferrosilicon and ferrosilicoaluminum (or aluminum shot) carry out smelting ferrovanadium for raw material in electric arc furnace.The outer thermite process of stove is mainly with V
2O
5(or V
2O
3), to add lime, steel cuttings (iron powder), aluminum shot be raw material, utilizes the id reaction liberated heat to carry out smelting ferrovanadium.Electro-aluminothermic process is mainly with V
2O
5(or V
2O
3), lime, steel cuttings (iron powder), aluminum shot is that raw material carries out smelting ferrovanadium in electric arc furnace.The smelting of vanadium iron all is with V in the above method
2O
5Or V
2O
3For containing vanadium raw materials, prepare bed material and major ingredient, the smelting initial stage, at first add bed material and smelt, behind the bed material reacting balance, add again major ingredient and reduce, carry out at last refining, with V
2O
5Or V
2O
3For there is the high problem of production cost in raw material.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method of utilizing vanadium iron in the smart slag melting of vanadium, and the method directly replaces vanadium iron in the smelting of part Vanadium Pentoxide in FLAKES with the smart slag raw material of vanadium, shortens the technical process of the smart slag melting vanadium iron of vanadium, reduces production costs.
Technical solution of the present invention is:
A kind of method of utilizing vanadium iron in the smart slag melting of vanadium, its concrete steps are:
1), adopt perrin process to smelt, perrin process is the first phase reduction period, press total 0.15 times～0.35 times adding steel scrap throwing the vanadium amount of first phase reduction period, the second stage of reduction period, three phase reduction periods and refining period, Vanadium Pentoxide in FLAKES, the smart slag of vanadium, aluminium powder, silica flour are mixed and drop in the electric arc furnace, the weight ratio of the smart slag of described Vanadium Pentoxide in FLAKES and vanadium, aluminium powder, silica flour is respectively 100:130～100:320,100:10～100:60,100:0～100:50, after the igniting reaction, generate vanadium iron and slag;
2), reduction period adopts electric furnace process, described reduction period is divided into the second stage of reduction period and three phase reduction periods, be a reduction period after each deslagging in the electric arc furnace, two, three phases are when reducing, be that 100:150～100:280 mixes and drops in the electric arc furnace with Vanadium Pentoxide in FLAKES and lime according to weight ratio, described perrin process is smelted and the second stage of reduction period, the weight ratio that three phase reduction periods are thrown the vanadium amount is respectively 100:150～100:230,100:150～100:240, the electric arc furnace heating, material melting is become molten state, 0.3 times～0.6 times 0.05 times～0.15 times of adding ferrosilicon and corresponding reduction period throwing vanadium amount throwing the vanadium amount by corresponding reduction period adds ferrosilicoaluminum dilution slag, when vanadiumcontent in the slag reaches 0.35% when following, deslagging, before the reduction period deslagging of three phases, get alloy sample and analyze vanadium and silicon, content of vanadium reaches 45%～49%, and silicone content reaches 2.5%～5.5%;
3), adopt electric furnace process refining period, be that 100:100～100:250 drops in the electric arc furnace with Vanadium Pentoxide in FLAKES and lime according to weight ratio, it is 100:150～100:240 that described perrin process is smelted with the weight ratio of throwing the vanadium amount refining period, refining is carried out in the electric arc furnace heating, and refining temperature is 1700 ℃～1900 ℃, sampling analysis, after qualified, utilize ladle to cast, remove ferrovanadium dregs, get middle vanadium iron.
Described ferrovanadium dregs is used for step 1) perrin process smelting ferrovanadium.
Reaction mechanism of the present invention:
Vanadium Pentoxide in FLAKES smelting ferrovanadium mechanism:
The smart slag melting vanadium iron of vanadium mechanism:
Advantage of the present invention is:
(1) use the smart slag of vanadium to replace the part Vanadium Pentoxide in FLAKES to produce vanadium iron as containing vanadium raw materials, Vanadium Pentoxide in FLAKES consumption has saved 4%～11%, has reduced the production cost that vanadium iron is smelted.
(2) contain a large amount of iron (Σ Fe 〉=20%) in the smart slag of vanadium, steel cuttings (iron powder) consumption has saved 20%～30%, has reduced the production cost that vanadium iron is smelted.
(3) vanadium in the smart slag of vanadium mainly exists with three valence states, three valence state vanadium are compared in smelting ferrovanadium (being reduced to the zero-valent state vanadium) process with pentavalent attitude vanadium, reduced the consumption of reductive agent, when having shortened the smart slag production of vanadium vanadium iron, need produce first Vanadium Pentoxide in FLAKES, produce again the loaded down with trivial details technique of vanadium iron with Vanadium Pentoxide in FLAKES.
(4) reduce vanadium slag and produced V
2O
5The consumption such as maintenance of the equipment in the process, supplementary material and energy source and power have reduced the vanadium iron production cost.
(5) the outer thermite process (first phase reduction period) of stove and electro-silicothermic process (two, three phase reduction periods) smelting are combined, take full advantage of the chemical reaction heat △ H of the outer thermite process Vanadium Pentoxide in FLAKES of stove and aluminium
298(Al)=-368.36KJ/mol, much larger than its spontaneous reaction heat-301.39 KJ/mol, can reduce power consumption, and in electric arc furnace, two, three phases reduction is contained the high slag of vanadium and carry out dilution reduction, refining, get qualified vanadium iron, the slag of discharging contains vanadium less than 0.35%, and the vanadium smelting rate of recovery is 97%～98.5%.
Embodiment
Embodiment 1
1, adopt perrin process to smelt, perrin process is the first phase reduction period, 8 kilograms of 104 kilograms of the smart slags of 80 kilograms of Vanadium Pentoxide in FLAKESs, vanadium (containing vanadium 12.5%), aluminium powder is mixed evenly, as first phase reduction compound, in electric arc furnace, drop into 180 kilograms of steel scraps, get 50 kilograms of first phase reduction compounds and be layered at the bottom of the arc furnace, light with 1 kilogram of Potcrate and magnesium rod naked light, add the surplus compound, continue reaction, after reaction finishes, generate vanadium iron and slag, slag does not efflux.
2, reduction period adopts electric furnace process, reduction period operation steps to be followed successively by lower discharge electrode,, smelting reduction reinforced to electricity, sampling deslagging, and reduction period is divided into the second stage of reduction period and three phase reduction periods;
1) the second stage of reduction period
1. descend discharge electrode: electrode is put into electric arc furnace;
2. give electricity reinforced: 270 kilograms of 180 kilograms of Vanadium Pentoxide in FLAKESs, lime to be mixed evenly, to drop in the electric arc furnace as second phase reduction compound;
3. smelting reduction: along with the input of second phase reduction compound, strengthen gradually electric current, utilize electric energy to melt, treat that material becomes molten state in the electric arc furnace, get dilution slag in 9 kilograms of input stoves of 54 kilograms of ferrosilicon and ferrosilicoaluminum, question response is fierce, has that a large amount of white smoke are emerged, flame is white when bright, on lift electrode and break away from the top of the slag;
4. deslagging: reach 0.35% when following when slag contains vanadium, pour out lean slag, carry out the restoring operation of three phases;
2) three phase reduction periods
1. descend discharge electrode: electrode is put into electric arc furnace;
2. give electricity reinforced: 315 kilograms of 190 kilograms of Vanadium Pentoxide in FLAKESs, lime to be mixed evenly, to drop in the electric arc furnace as three phases reduction compound;
3. smelting reduction: along with the input of three phases reduction compound, strengthen gradually electric current, utilize electric energy to melt, treat that material becomes molten state in the electric arc furnace, get dilution slag in 10.5 kilograms of input stoves of 114 kilograms of ferrosilicon and ferrosilicoaluminum, question response is fierce, has that a large amount of white smoke are emerged, flame is white when bright, on lift electrode and break away from the top of the slag;
4. sampling: reach 0.35% when following when slag contains vanadium, get alloy sample analysis content of vanadium and be 46.4% and silicone content be 4.18%, the power failure deslagging.
3, adopt electric furnace process refining period, 190 kilograms of 190 kilograms of Vanadium Pentoxide in FLAKESs, lime are mixed evenly, as refining period compound drop in the electric arc furnace, give electrically heated, carry out melting refinement at 1700 ℃～1900 ℃, when treating that material becomes molten state in the electric arc furnace, stir and the sampling analysis detection, content of vanadium is 49.98%, silicone content is 0.55%, carbon content is 0.28%, phosphorus content is 0.050%, and it is qualified to detect, and comes out of the stove, utilize ladle to cast, remove ferrovanadium dregs, get vanadium iron in 720 kilograms, the vanadium smelting rate of recovery is 98.5%; After the casting, ferrovanadium dregs continues on for step 1 perrin process and smelts.
Embodiment 2
1, adopt perrin process to smelt, perrin process is the first phase reduction period, 40 kilograms of 144 kilograms of the smart slags of 100 kilograms of Vanadium Pentoxide in FLAKESs, vanadium (containing vanadium 13.5%), 48 kilograms of aluminium powders, silica flour is mixed evenly, as first phase reduction compound, in electric arc furnace, drop into 200 kilograms of steel scraps, get 50 kilograms of first phase reduction compounds and be layered at the bottom of the arc furnace, light with 1 kilogram of Potcrate and magnesium rod naked light, add the surplus compound, continue reaction, after reaction finishes, generate vanadium iron and slag, slag does not efflux.
2, reduction period adopts electric furnace process, reduction period operation steps to be followed successively by lower discharge electrode,, smelting reduction reinforced to electricity, sampling deslagging, and reduction period is divided into the second stage of reduction period and three phase reduction periods;
1) the second stage of reduction period
1. descend discharge electrode: electrode is put into electric arc furnace;
2. give electricity reinforced: 560 kilograms of 200 kilograms of Vanadium Pentoxide in FLAKESs, lime to be mixed evenly, to drop in the electric arc furnace as second phase reduction compound;
3. smelting reduction: along with the input of second phase reduction compound, strengthen gradually electric current, utilize electric energy to melt, treat that material becomes molten state in the electric arc furnace, get dilution slag in 30 kilograms of input stoves of ferrosilicon 120 kg and ferrosilicoaluminum, question response is fierce, has that a large amount of white smoke are emerged, flame is white when bright, on lift electrode and break away from the top of the slag;
4. deslagging: reach 0.35% when following when slag contains vanadium, pour out lean slag, carry out the restoring operation of three phases;
2) three phase reduction periods
1. descend discharge electrode: electrode is put into electric arc furnace;
2. give electricity reinforced: 616 kilograms of 220 kilograms of Vanadium Pentoxide in FLAKESs, lime to be mixed evenly, to drop in the electric arc furnace as three phases reduction compound;
3. smelting reduction: along with the input of three phases reduction compound, strengthen gradually electric current, utilize electric energy to melt, treat that material becomes molten state in the electric arc furnace, get dilution slag in 33 kilograms of input stoves of 132 kilograms of ferrosilicon and ferrosilicoaluminum, question response is fierce, has that a large amount of white smoke are emerged, flame is white when bright, on lift electrode and break away from the top of the slag;
4. sampling: reach 0.35% when following when slag contains vanadium, get alloy sample analysis content of vanadium and be 45.3% and silicone content be 3.98%, the power failure deslagging.
3, adopt electric furnace process refining period, 500 kilograms of 200 kilograms of Vanadium Pentoxide in FLAKESs, lime are mixed evenly, as refining period compound drop in the electric arc furnace, give electrically heated, carry out melting refinement at 1700 ℃～1900 ℃, when treating that material becomes molten state in the electric arc furnace, stir and the sampling analysis detection, content of vanadium is 50.64%, silicone content is 0.75%, carbon content is 0.26%, phosphorus content is 0.045%, and it is qualified to detect, and comes out of the stove, utilize ladle to cast, remove ferrovanadium dregs, get vanadium iron in 800 kilograms, the vanadium smelting rate of recovery is 97.9%; After the casting, ferrovanadium dregs continues on for step 1 perrin process and smelts.
Embodiment 3
1, adopt perrin process to smelt, perrin process is the first phase reduction period, 60 kilograms of the smart slag of 200 kilograms of Vanadium Pentoxide in FLAKESs, vanadium 640 kilograms of (containing vanadium 13.5%), aluminium powder 120 kgs, silica flours is mixed evenly, as first phase reduction compound, in electric arc furnace, drop into 410 kilograms of steel scraps, get 50 kilograms of first phase reduction compounds and be layered at the bottom of the arc furnace, light with 1 kilogram of Potcrate and magnesium rod naked light, add the surplus compound, continue reaction, after reaction finishes, generate vanadium iron and slag, slag does not efflux.
2, reduction period adopts electric furnace process, reduction period operation steps to be followed successively by lower discharge electrode,, smelting reduction reinforced to electricity, sampling deslagging, and reduction period is divided into the second stage of reduction period and three phase reduction periods;
1) the second stage of reduction period
1. descend discharge electrode: electrode is put into electric arc furnace;
2. give electricity reinforced: 900 kilograms of 400 kilograms of Vanadium Pentoxide in FLAKESs, lime to be mixed evenly, to drop in the electric arc furnace as second phase reduction compound;
3. smelting reduction: along with the input of second phase reduction compound, strengthen gradually electric current, utilize electric energy to melt, treat that material becomes molten state in the electric arc furnace, get dilution slag in 25 kilograms of input stoves of 65 kilograms of ferrosilicon and ferrosilicoaluminum, question response is fierce, has that a large amount of white smoke are emerged, flame is white when bright, on lift electrode and break away from the top of the slag;
4. deslagging: reach 0.35% when following when slag contains vanadium, pour out lean slag, carry out the restoring operation of three phases;
2) three phase reduction periods
1. descend discharge electrode: electrode is put into electric arc furnace;
2. give electricity reinforced: 1230 kilograms of 450 kilograms of Vanadium Pentoxide in FLAKESs, lime to be mixed evenly, to drop in the electric arc furnace as three phases reduction compound;
3. smelting reduction: along with the input of three phases reduction compound, strengthen gradually electric current, utilize electric energy to melt, treat that material becomes molten state in the electric arc furnace, get dilution slag in 30 kilograms of input stoves of 240 kilograms of ferrosilicon and ferrosilicoaluminum, question response is fierce, has that a large amount of white smoke are emerged, flame is white when bright, on lift electrode and break away from the top of the slag;
4. sampling: reach 0.35% when following when slag contains vanadium, get alloy sample analysis content of vanadium and be 48.4% and silicone content be 2.78%, the power failure deslagging.
3, adopt electric furnace process refining period, 800 kilograms of 400 kilograms of Vanadium Pentoxide in FLAKESs, lime are mixed evenly, as refining period compound drop in the electric arc furnace, give electrically heated, carry out melting refinement at 1700 ℃～1900 ℃, when treating that material becomes molten state in the electric arc furnace, stir and the sampling analysis detection, content of vanadium is 50.21%, silicone content is 1.23%, carbon content is 0.22%, phosphorus content is 0.055%, and it is qualified to detect, and comes out of the stove, utilize ladle to cast, remove ferrovanadium dregs, get vanadium iron in 1720 kilograms, the vanadium smelting rate of recovery is 97.5%; After the casting, ferrovanadium dregs continues on for step 1 perrin process and smelts.
Embodiment 4
1, adopt perrin process to smelt, perrin process is the first phase reduction period, 55 kilograms of the smart slag of 150 kilograms of Vanadium Pentoxide in FLAKESs, vanadium 230 kilograms of (containing vanadium 12.0%), 45 kilograms of aluminium powders, silica flours is mixed evenly, as first phase reduction compound, in electric arc furnace, drop into 350 kilograms of steel scraps, get 50 kilograms of first phase reduction compounds and be layered at the bottom of the arc furnace, light with 1 kilogram of Potcrate and magnesium rod naked light, add the surplus compound, continue reaction, after reaction finishes, generate vanadium iron and slag, slag does not efflux.
2, reduction period adopts electric furnace process, reduction period operation steps to be followed successively by lower discharge electrode,, smelting reduction reinforced to electricity, sampling deslagging, and reduction period is divided into the second stage of reduction period and three phase reduction periods;
1) the second stage of reduction period
1. descend discharge electrode: electrode is put into electric arc furnace;
2. give electricity reinforced: 450 kilograms of 300 kilograms of Vanadium Pentoxide in FLAKESs, lime to be mixed evenly, to drop in the electric arc furnace as second phase reduction compound;
3. smelting reduction: along with the input of second phase reduction compound, strengthen gradually electric current, utilize electric energy to melt, treat that material becomes molten state in the electric arc furnace, get dilution slag in 45 kilograms of input stoves of 90 kilograms of ferrosilicon and ferrosilicoaluminum, question response is fierce, has that a large amount of white smoke are emerged, flame is white when bright, on lift electrode and break away from the top of the slag;
4. deslagging: reach 0.35% when following when slag contains vanadium, pour out lean slag, carry out the restoring operation of three phases;
2) three phase reduction periods
1. descend discharge electrode: electrode is put into electric arc furnace;
2. give electricity reinforced: 850 kilograms of 350 kilograms of Vanadium Pentoxide in FLAKESs, lime to be mixed evenly, to drop in the electric arc furnace as three phases reduction compound;
3. smelting reduction: along with the input of three phases reduction compound, strengthen gradually electric current, utilize electric energy to melt, treat that material becomes molten state in the electric arc furnace, get dilution slag in 45 kilograms of input stoves of ferrosilicon 120 kg and ferrosilicoaluminum, question response is fierce, has that a large amount of white smoke are emerged, flame is white when bright, on lift electrode and break away from the top of the slag;
4. sampling: reach 0.35% when following when slag contains vanadium, get alloy sample analysis content of vanadium and be 46.5% and silicone content be 4.25%, the power failure deslagging.
3, adopt electric furnace process refining period, 700 kilograms of 400 kilograms of Vanadium Pentoxide in FLAKESs, lime are mixed evenly, as refining period compound drop in the electric arc furnace, give electrically heated, carry out melting refinement at 1700 ℃～1900 ℃, when treating that material becomes molten state in the electric arc furnace, stir and the sampling analysis detection, content of vanadium is 51.5%, silicone content is 1.56%, carbon content is 0.21%, phosphorus content is 0.055%, and it is qualified to detect, and comes out of the stove, utilize ladle to cast, remove ferrovanadium dregs, get vanadium iron in 1300 kilograms, the vanadium smelting rate of recovery is 98.0%; After the casting, ferrovanadium dregs continues on for step 1 perrin process and smelts.
Can find out that by embodiment 1～embodiment 4 utilize the smart slag of vanadium to replace vanadium iron in the smelting of part Vanadium Pentoxide in FLAKES, product index meets national standard (GB/T 4139) FeV50-A level product regulation, the vanadium smelting rate of recovery is 97%～98.5%.
Comparative Examples 1
1, Vanadium Pentoxide in FLAKES adopts vanadium iron in the electric furnace process smelting, be layered at the bottom of the arc furnace toward interior 360 kilograms of the steel scraps that drop into of electric arc furnace, reduction period is divided into first phase reduction period, the second stage of reduction period and three phase reduction periods, the reduction period operation steps is followed successively by lower discharge electrode, give that electricity is reinforced, smelting reduction, sampling deslagging, and reduction is carried out refining after finishing.
2, first phase reduction period
1. descend discharge electrode: electrode is put into electric arc furnace;
2. give electricity reinforced: 400 kilograms of 160 kilograms of Vanadium Pentoxide in FLAKESs, lime to be mixed evenly, to drop in the electric arc furnace as first phase reduction compound;
3. smelting reduction: along with the input of first phase reduction compound, strengthen gradually electric current, utilize electric energy to melt, treat that material becomes molten state in the electric arc furnace, get dilution slag in 25 kilograms of input stoves of 150 kilograms of ferrosilicon and ferrosilicoaluminum, question response is fierce, has that a large amount of white smoke are emerged, flame is white when bright, on lift electrode and break away from the top of the slag;
4. deslagging: reach 0.35% when following when slag contains vanadium, pour out lean slag, carry out the restoring operation of three phases.
3, the second stage of reduction period
1. descend discharge electrode: electrode is put into electric arc furnace;
2. give electricity reinforced: 600 kilograms of 255 kilograms of Vanadium Pentoxide in FLAKESs, lime to be mixed evenly, to drop in the electric arc furnace as second phase reduction compound;
3. smelting reduction: along with the input of second phase reduction compound, strengthen gradually electric current, utilize electric energy to melt, treat that material becomes molten state in the electric arc furnace, get dilution slag in 45 kilograms of input stoves of ferrosilicon 120 kg and ferrosilicoaluminum, question response is fierce, has that a large amount of white smoke are emerged, flame is white when bright, on lift electrode and break away from the top of the slag;
4. deslagging: reach 0.35% when following when slag contains vanadium, pour out lean slag, carry out the restoring operation of three phases.
4, three phase reduction periods
1. descend discharge electrode: electrode is put into electric arc furnace;
2. give electricity reinforced: 650 kilograms of 295 kilograms of Vanadium Pentoxide in FLAKESs, lime to be mixed evenly, to drop in the electric arc furnace as three phases reduction compound;
3. smelting reduction: along with the input of three phases reduction compound, strengthen gradually electric current, utilize electric energy to melt, treat that material becomes molten state in the electric arc furnace, get dilution slag in 46 kilograms of input stoves of 145 kilograms of ferrosilicon and ferrosilicoaluminum, question response is fierce, has that a large amount of white smoke are emerged, flame is white when bright, on lift electrode and break away from the top of the slag;
4. sampling: reach 0.35% when following when slag contains vanadium, get alloy sample analysis content of vanadium and be 46.5% and silicone content be 4.25%, the power failure deslagging.
5, adopt electric furnace process refining period, 410 kilograms of 285 kilograms of Vanadium Pentoxide in FLAKESs, lime are mixed evenly, as refining period compound drop in the electric arc furnace, give electrically heated, carry out melting refinement at 1700 ℃～1900 ℃, when treating that material becomes molten state in the electric arc furnace, stir and the sampling analysis detection, content of vanadium is 51.1%, silicone content is 1.46%, carbon content is 0.22%, phosphorus content is 0.035%, and it is qualified to detect, and comes out of the stove, utilize ladle to cast, remove ferrovanadium dregs, get vanadium iron in 1035 kilograms, the vanadium smelting rate of recovery is 97.2%.
The vanadium iron leading indicator was as shown in table 1 during the smart slag replacement of vanadium part Vanadium Pentoxide in FLAKES was smelted:
Table 1
| Middle vanadium iron desired raw material amount per ton | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Comparative Examples 1 |
| Vanadium Pentoxide in FLAKES, kg | 889 | 887 | 839 | 896 | 941 |
| Vanadium Pentoxide in FLAKES saving amount, % | 5.5 | 5.7 | 10.8 | 4.8 | - |
| Steel scrap, kg | 250 | 246 | 237 | 261 | 340 |
| Steel scrap saving amount, % | 26.5 | 27.6 | 30.3 | 23.2 | - |
| The rate of recovery, % | 98.5 | 97.9 | 97.5 | 98.0 | 97.2 |
Claims (2)
1. method of utilizing vanadium iron in the smart slag melting of vanadium is characterized in that concrete steps are as follows:
1), adopt perrin process to smelt, perrin process is the first phase reduction period, press total 0.15 times～0.35 times adding steel scrap throwing the vanadium amount of first phase reduction period, the second stage of reduction period, three phase reduction periods and refining period, Vanadium Pentoxide in FLAKES, the smart slag of vanadium, aluminium powder, silica flour are mixed and drop in the electric arc furnace, the weight ratio of the smart slag of described Vanadium Pentoxide in FLAKES and vanadium, aluminium powder, silica flour is respectively 100:130～100:320,100:10～100:60,100:0～100:50, after the igniting reaction, generate vanadium iron and slag;
2), reduction period adopts electric furnace process, described reduction period is divided into the second stage of reduction period and three phase reduction periods, be a reduction period after each deslagging in the electric arc furnace, two, three phases are when reducing, be that 100:150～100:280 mixes and drops in the electric arc furnace with Vanadium Pentoxide in FLAKES and lime according to weight ratio, described perrin process is smelted and the second stage of reduction period, the weight ratio that three phase reduction periods are thrown the vanadium amount is respectively 100:150～100:230,100:150～100:240, the electric arc furnace heating, material melting is become molten state, 0.3 times～0.6 times 0.05 times～0.15 times of adding ferrosilicon and corresponding reduction period throwing vanadium amount throwing the vanadium amount by corresponding reduction period adds ferrosilicoaluminum dilution slag, when vanadiumcontent in the slag reaches 0.35% when following, deslagging, before the reduction period deslagging of three phases, get alloy sample and analyze vanadium and silicon, content of vanadium reaches 45%～49%, and silicone content reaches 2.5%～5.5%;
3), adopt electric furnace process refining period, be that 100:100～100:250 drops in the electric arc furnace with Vanadium Pentoxide in FLAKES and lime according to weight ratio, it is 100:150～100:240 that described perrin process is smelted with the weight ratio of throwing the vanadium amount refining period, refining is carried out in the electric arc furnace heating, and refining temperature is 1700 ℃～1900 ℃, sampling analysis, after qualified, utilize ladle to cast, remove ferrovanadium dregs, get middle vanadium iron.
2. the method for utilizing vanadium iron in the smart slag melting of vanadium according to claim 1, it is characterized in that: described ferrovanadium dregs is used for step 1) perrin process smelting ferrovanadium.
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| CN103397130A (en) * | 2013-08-27 | 2013-11-20 | 谢廷声 | Composite iron alloy for producing vanadium iron and vanadium by using silicon barium iron alloy as reducing agent |
| CN103397208A (en) * | 2013-07-11 | 2013-11-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Process for smelting ferro-vanadium through electro-aluminothermic method |
| CN103409674A (en) * | 2013-07-03 | 2013-11-27 | 中信锦州金属股份有限公司 | Smelting method of high vanadium iron |
| CN104532105A (en) * | 2015-01-04 | 2015-04-22 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preparing ferrovanadium by rollover furnace through electro-aluminothermic process |
| CN104726715A (en) * | 2015-03-31 | 2015-06-24 | 河北钢铁股份有限公司承德分公司 | Recycling method for vanadium-chromium waste residues |
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| CN109355551A (en) * | 2018-12-10 | 2019-02-19 | 攀枝花钢城集团有限公司 | A kind of production method of vanadium iron |
| CN110408779A (en) * | 2019-07-25 | 2019-11-05 | 河钢股份有限公司承德分公司 | A method of the resource comprehensive utilization of solid waste containing vanadium utilizes |
| CN110699554A (en) * | 2019-10-16 | 2020-01-17 | 中冶赛迪工程技术股份有限公司 | Method for producing vanadium-rich iron from vanadium-rich slag |
| CN113416882A (en) * | 2021-06-23 | 2021-09-21 | 攀枝花蒙兴冶金炉料有限公司 | Method for producing polycrystalline phase vanadium series alloy by utilizing waste rich material |
| CN115369210A (en) * | 2022-09-02 | 2022-11-22 | 攀钢集团西昌钒制品科技有限公司 | Method for controlling vanadium content in vanadium iron slag smelted by large-scale tilting furnace |
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| CN103409674A (en) * | 2013-07-03 | 2013-11-27 | 中信锦州金属股份有限公司 | Smelting method of high vanadium iron |
| CN103397208A (en) * | 2013-07-11 | 2013-11-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Process for smelting ferro-vanadium through electro-aluminothermic method |
| CN103397208B (en) * | 2013-07-11 | 2015-04-29 | 攀钢集团攀枝花钢铁研究院有限公司 | Process for smelting ferro-vanadium through electro-aluminothermic method |
| CN103397130A (en) * | 2013-08-27 | 2013-11-20 | 谢廷声 | Composite iron alloy for producing vanadium iron and vanadium by using silicon barium iron alloy as reducing agent |
| CN103397130B (en) * | 2013-08-27 | 2016-01-06 | 谢廷声 | The complex ferroalloy that reductive agent produces vanadium iron and vanadium is made with silicon barium-ferrum alloy |
| CN104532105A (en) * | 2015-01-04 | 2015-04-22 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preparing ferrovanadium by rollover furnace through electro-aluminothermic process |
| CN104726715A (en) * | 2015-03-31 | 2015-06-24 | 河北钢铁股份有限公司承德分公司 | Recycling method for vanadium-chromium waste residues |
| CN105112594A (en) * | 2015-09-23 | 2015-12-02 | 攀钢集团西昌钢钒有限公司 | Method of using tilting furnace to smelt ferrovanadium |
| CN106435222A (en) * | 2016-10-08 | 2017-02-22 | 牛益庆 | Smelting method for silicon aluminium reduction vanadium iron |
| CN109355551A (en) * | 2018-12-10 | 2019-02-19 | 攀枝花钢城集团有限公司 | A kind of production method of vanadium iron |
| CN110408779A (en) * | 2019-07-25 | 2019-11-05 | 河钢股份有限公司承德分公司 | A method of the resource comprehensive utilization of solid waste containing vanadium utilizes |
| CN110699554A (en) * | 2019-10-16 | 2020-01-17 | 中冶赛迪工程技术股份有限公司 | Method for producing vanadium-rich iron from vanadium-rich slag |
| CN113416882A (en) * | 2021-06-23 | 2021-09-21 | 攀枝花蒙兴冶金炉料有限公司 | Method for producing polycrystalline phase vanadium series alloy by utilizing waste rich material |
| CN115369210A (en) * | 2022-09-02 | 2022-11-22 | 攀钢集团西昌钒制品科技有限公司 | Method for controlling vanadium content in vanadium iron slag smelted by large-scale tilting furnace |
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