CN107090533B - A kind of preparation method of the high vanadium pig iron - Google Patents
A kind of preparation method of the high vanadium pig iron Download PDFInfo
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- CN107090533B CN107090533B CN201710451202.1A CN201710451202A CN107090533B CN 107090533 B CN107090533 B CN 107090533B CN 201710451202 A CN201710451202 A CN 201710451202A CN 107090533 B CN107090533 B CN 107090533B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/12—Making spongy iron or liquid steel, by direct processes in electric furnaces
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B11/00—Making pig-iron other than in blast furnaces
- C21B11/10—Making pig-iron other than in blast furnaces in electric furnaces
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/006—Starting from ores containing non ferrous metallic oxides
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0066—Preliminary conditioning of the solid carbonaceous reductant
Abstract
The invention discloses a kind of preparation methods of high vanadium pig iron, belong to metallurgical technology field.Preparation method includes: to mix the carbonaceous reducing agent of vanadium titano-magnetite metallized pellet and the 3-10wt% for accounting for vanadium titano-magnetite metallized pellet to be placed in melting in smelting furnace, smelting temperature is risen to 1500-1550 DEG C, releases low vanadium-containing molten iron immediately after heat preservation 10-30min, retains clinker；And smelting temperature is risen to 1550~1600 DEG C again, in 3~5min in the mixture that carbonaceous reducing agents and calcium oxide powder are formed is added points for 3~5 times, after keeping the temperature 10~60min, release high vanadium molten iron immediately, the high vanadium pig iron obtained after solidification.High vanadium pig iron content of vanadium prepared by the present invention is high, and the vanadium-rich slag of production can be adapted for directly producing vanadium iron.
Description
Technical field
The present invention relates to metallurgical technology fields, and in particular to a kind of preparation method of the high vanadium pig iron.
Background technique
China Panxi Area, Sichuan Province v-ti magnetite ore reserves is huge.What the vanadium in vanadium titano-magnetite was extracted at present is main
Mode is that molten point of direct-reduction-or blast furnace process obtain pig iron containing vanadium, then obtain vanadium product by subsequent step.
It is lower containing vanadium for the vanadium content obtained with molten point of existing direct-reduction-or smelting vanadium-titanium magnetite by blast furnace
The pig iron (V≤1wt%), can only smelt V out2O5Content is less than the vanadium slag of 20wt%, and such vanadium slag can typically be only used to produce
V2O5, cannot be suitable for directly producing vanadium iron well.And the impurity content of this vanadium slag is high, for producing V2O5When
It will cause higher energy consumption, increase production cost.
Summary of the invention
Of the existing technology in order to solve the problems, such as, it is an object of the present invention to provide a kind of preparations of high vanadium pig iron
Method, to solve the problems, such as that existing pig iron containing vanadium content of vanadium is lower.
It is another object of the present invention to provide a kind of high vanadium pig iron, content of vanadium is high, and the vanadium-rich slag of production can be with
Suitable for directly producing vanadium iron.
The technical scheme to solve the above technical problems is that
A kind of preparation method of the high vanadium pig iron, comprising:
(1) by the carbonaceous of vanadium titano-magnetite metallized pellet and the 3-10wt% for accounting for vanadium titano-magnetite metallized pellet
Reducing agent mixing is placed in melting in smelting furnace, releases immediately after rising to 1500-1550 DEG C by smelting temperature, keep the temperature 10-30min
Low vanadium-containing molten iron retains clinker；And
(2) smelting temperature is risen to 1550~1600 DEG C again, interior point of 3~5 addition carbonaceous reducing agents in 3~5min
The mixture formed with calcium oxide powder releases high vanadium molten iron immediately, the high vanadium pig iron is obtained after solidification after keeping the temperature 10~60min；
Wherein, 0.5-1.5wt% of the dosage of carbonaceous reducing agent for vanadium titano-magnetite metallized pellet, oxygen in step (2)
The dosage for changing calcium powder is the 1-3wt% of vanadium titano-magnetite metallized pellet.
Molten timesharing is carried out in step (1) of the invention, selecting the dosage for the carbonaceous reducing agent being added is vanadium titano-magnetite
The 3-10wt% of metallized pellet (hereinafter referred to as metallized pellet), with FeO excessive in metallized pellet reduction, and makes furnace
Remaining FeO content is able to maintain in the range of 9~13wt% in slag, thus prevent that vanadium is reduced and enter it is molten separate it is low
In vanadium-containing molten iron, and then help to make in vanadium enrichment Yu Yici clinker.It, can if excessive carbonaceous reducing agent is added in the process
The content of residual F eO in a clinker is reduced, and then a part of vanadium is caused to enter in low vanadium-containing molten iron, and reduces vanadium in a clinker
In enrichment degree.Meanwhile the additional amount of carbonaceous reducing agent in the range of 3%~10% according to the metallization of metallized pellet
Rate is selected, and the degree of metalization of pelletizing is higher, and the carbonaceous reducing agent that need to be added is fewer.Vice versa.
In addition, the present invention obtains low vanadium molten iron in step (1) can be used for making steel or as Converter Oxigen Blowing vanadium extraction
Coolant.
In step (2) of the invention, the purpose of 0.5%~1.5% carbonaceous reducing agent of pellet quality is added again
It is FeO excessive in the clinker obtained after molten point of reduction step (1), and keeps remaining FeO content in secondary clinker
In the range of 0~3wt%, be conducive to vanadium and be reduced into high vanadium ferroalloy water, to help to make vanadium enrichment in the high vanadium pig iron
In.In step (2), if carbonaceous reducing agent content is higher than the range, the titanium in secondary clinker can be made to be reduced to carbon nitridation
Titanium causes secondary slag viscosity to increase, is unfavorable for the separation of secondary clinker Yu high vanadium ferroalloy water；It should if carbonaceous reducing agent content is lower than
Range then will lead to FeO too high levels in secondary clinker, be unfavorable for vanadium enrichment in the high vanadium pig iron.
In step (2) of the invention, calcium oxide powder is added is designed to provide the basicity of secondary clinker, to reduce
The fusing point of secondary clinker increases the mobility of secondary clinker, is conducive to vanadium and is reduced into high vanadium ferroalloy water, is conducive to slag iron point
From.
In step (1) of the invention and (2), molten iron is released immediately, molten iron is efficiently separated with clinker, thus
It avoids leading to molten steel solidification because emitting rate is too slow, and influences to melt and divide effect.It " is stood it should be noted that the present invention is signified
I.e. " refer to that heat preservation to after the corresponding time, releases molten iron as quickly as possible, heat preservation terminate with during releasing molten iron, stop when
Between it is more shorter better, " immediately " includes but is not limited to critical meanings such as " at once, " at once, the restriction of the word with by molten iron with
Clinker efficiently separates as the main purpose.
Trend of the present invention by control vanadium in slag and iron, by vanadium enrichment in the fraction pig iron, to obtain high vanadium
The pig iron.First by the vanadium enrichment in the vanadium titano-magnetite metallized pellet shallowly restored in slag, obtains containing the lower pig iron of vanadium and contain
A high clinker of vanadium, then deep reduction is carried out to a clinker, obtain the high vanadium pig iron.The present invention passes through in existing metallized pellet
Trend of the step of increasing " releasing low vanadium-containing molten iron " and " adding mixture " on the molten division technique control vanadium in clinker and molten iron, will
Vanadium enrichment, to obtain the high vanadium pig iron, meets the needs of industrialization in the fraction pig iron.Further, of the invention preferable
Embodiment in, the content of vanadium is lower than 0.1wt% in low vanadium-containing molten iron, and the content of FeO is 9~13wt% in clinker.
Further, in preferred embodiments of the present invention, the degree of metalization of above-mentioned vanadium titano-magnetite metallized pellet is
70~90%, the partial size of vanadium titano-magnetite metallized pellet is 10~100nm.
Further, in preferred embodiments of the present invention, above-mentioned vanadium titano-magnetite metallized pellet includes following components:
The V of the TFe of 50~80wt%, the FeO of 5~25wt%, 0.5~1.5wt%2O5, 10~20wt% TiO2, 0.5~2wt%
CaO and 3~5wt% SiO2.Wherein, TFe indicates all iron content in metallized pellet.
Further, in preferred embodiments of the present invention, above-mentioned carbonaceous reducing agent is in coal dust, coke powder and graphite powder
One or more combinations.
Further, in preferred embodiments of the present invention, the partial size of above-mentioned carbonaceous reducing agent is less than 1mm.
Further, in preferred embodiments of the present invention, the partial size of above-mentioned calcium oxide powder is less than 1mm.
Further, in preferred embodiments of the present invention, above-mentioned smelting furnace be blast furnace, electric arc furnaces, mineral hot furnace, open hearth or
Muffle furnace.
The high vanadium pig iron being prepared using above-mentioned preparation method.
Further, in preferred embodiments of the present invention, the content of vanadium is 1~10wt% in the above-mentioned high vanadium pig iron.
The invention has the following advantages:
The present invention is made the high vanadium pig iron that vanadium content is greater than 1wt%, then can be used and turn by melting point processing twice for vanadium enrichment
V is prepared in the methods of furnace vanadium extraction2O5Content is the vanadium-rich slag of 40wt% or so, and vanadium-rich slag can be directly used for production vanadium iron, then
Avoid production V2O5The step for, shorten the process of production vanadium iron, reduces production cost.
Detailed description of the invention
Fig. 1 is the process flow chart of the preparation method of the high vanadium pig iron of the present invention.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.The person that is not specified actual conditions in embodiment, according to normal conditions or the item suggested of manufacturer
Part carries out.Reagents or instruments used without specified manufacturer is the conventional products that can be obtained by commercially available purchase.
Fig. 1 is please referred to, preparation method of the invention is mainly to complete by following procedure:
By metallized pellet and carbonaceous reducing agent progress mixing, molten point is then carried out in smelting furnace, it is this time molten to be divided into " shallowly
Molten point of reduction ", low vanadium molten iron is released, obtains the low vanadium pig iron and the high clinker of vanadium content；Then carbonaceous reduction is added
The mixture of agent and calcium oxide powder carries out molten point of " deep reduction ", obtains the high vanadium pig iron and secondary clinker.
It should be noted that " the shallow reduction " of present invention meaning refers to the reduction reaction carried out in abovementioned steps (1),
In the step, the carbonaceous reducing agent used is less, therefore is defined as " shallow reduction ".Signified " deep reduction " of the invention refers to preceding
The reduction reaction carried out in step (2) is stated, in this step, the carbonaceous reducing agent used is more, therefore is defined as " deep reduction ".
Below with reference to embodiment, the present invention is further described.In the following example cited by the present invention, to turn bottom
For the obtained metallized pellet of furnace direct-reduction Panzhihua sefstromite concentrate carbon-burdened pellet, choose degree of metalization be (70~
90) raw material of %.
Embodiment 1:
The preparation method of the high vanadium pig iron of the present embodiment, comprising the following steps:
1, material prepares
The metallized pellet 10kg that degree of metalization is 50mm for 87.68%, partial size is selected, the group in metallized pellet becomes
(wt%): TFe 70.78, FeO 11.30, V2O50.68, TiO214.30, CaO 0.85, SiO23.32.In the present embodiment
Carbonaceous reducing agent is coal dust, and the fixed carbon content of coal dust is 80.29wt%.The granularity of coal dust and calcium oxide powder is 0.25mm.It weighs
100g coal dust and 100g calcium oxide powder are uniformly mixed stand-by.
2, molten point primary (molten point of " shallow reduction ")
400g coal dust is incorporated in metallized pellet, it is (specified to be added to electric arc furnaces after coal dust is mixed with metallized pellet
Power is 50KVA) in.Opening electric arc furnaces makes control current strength (voltage 380V, electric current are about 150A) stablize temperature
1500 DEG C of heat preservation 15min, time close electric arc furnaces after and pour out low vanadium-containing molten iron from the tapping mouth of a river rapidly, stay in a clinker
In electric arc furnaces.
3, molten point secondary (molten point of " deep reduction ")
Molten iron blocks the tapping mouth of a river and opens electric arc furnaces after being finished down, stablize electric arc furnace temperature in 1580 DEG C of (voltages
380V, electric current are about 190A), will it is primary it is slag melting after point 4 times every minor tick 1 minute, i.e., in 4min in points 4 times will be aforementioned
The mixture of ready coal dust and calcium oxide powder is added in electric arc furnaces from fire door, makes mixture under the stirring action of electric arc
It is uniformly mixed with clinker.Electric arc furnaces is closed after 30min and rapidly pours out high vanadium ferroalloy water and secondary clinker, and high vanadium ferroalloy water is naturally cold
But the high vanadium pig iron is obtained afterwards.
It is 0.54kg, 6.02wt% containing V that the present embodiment, which obtains high vanadium iron quality,；Low vanadium iron quality is 6.47kg, is contained
V0.07wt%；Secondary furnace vanadium slag quality is 2.87kg, contains V2O50.23wt%；Vanadium into high vanadium pig iron rate be 85.30wt%.
Embodiment 2:
The preparation method of the high vanadium pig iron of the present embodiment, comprising the following steps:
1, material prepares
The metallized pellet 10kg that degree of metalization is 50mm for 82.32%, partial size is selected, the group in metallized pellet becomes
(wt%): TFe 69.39, FeO 15.88, V2O50.70, TiO214.52, CaO 1.22, SiO23.34.In the present embodiment
Carbonaceous reducing agent is coal dust, and the fixed carbon content of coal dust is 80.29wt%.The granularity of coal dust and calcium oxide powder is 0.25mm.It weighs
120g coal dust and 200g calcium oxide powder are uniformly mixed stand-by.
2, molten point primary (molten point of " shallow reduction ")
It is incorporated 600g coal dust in metallized pellet, is added in electric arc furnaces after coal dust and metallized pellet are mixed.It opens
Opening electric arc furnaces and making to control current strength (voltage 380V, electric current are about 160A) stablizes temperature in 1520 DEG C of heat preservation 15min, when
Between closed after and electric arc furnaces and pour out molten iron from the tapping mouth of a river rapidly, stay in a clinker in electric arc furnaces.
3, molten point secondary (molten point of " deep reduction ")
Molten iron blocks the tapping mouth of a river and opens electric arc furnaces after being finished down, stablize electric arc furnace temperature in 1600 DEG C of (voltages
380V, electric current are about 200A), will it is primary it is slag melting after points of 4 times every minor ticks 1 minute by aforementioned ready coal dust and oxidation
The mixture of calcium powder is added in electric arc furnaces from fire door, is uniformly mixed mixture under the stirring action of electric arc with clinker.
Electric arc furnaces is closed after 30min and rapidly pours out high vanadium ferroalloy water and secondary clinker, obtains high vanadium after high vanadium molten iron natural cooling
The pig iron.
It is 0.63kg, 5.12wt% containing V that the present embodiment, which obtains high vanadium iron quality,；Low vanadium iron quality is 6.58kg, is contained
V 0.05wt%；Secondary furnace vanadium slag quality is 2.97kg, contains V2O50.22wt%；Vanadium into high vanadium pig iron rate be 82.28wt%.
Embodiment 3:
The preparation method of the high vanadium pig iron of the present embodiment, comprising the following steps:
1, material prepares
The metallized pellet 10kg that degree of metalization is 50mm for 75.50%, partial size is selected, the group in metallized pellet becomes
(wt%): TFe 68.85, FeO 19.20, V2O50.66, TiO213.67, CaO 1.68, SiO23.35.In the present embodiment
Carbonaceous reducing agent is coal dust, and the fixed carbon content of coal dust is 80.29wt%.The granularity of coal dust and calcium oxide powder is 0.35mm.It weighs
150g coal dust and 300g calcium oxide powder are uniformly mixed stand-by.
2, molten point primary (molten point of " shallow reduction ")
It is incorporated 800g coal dust in metallized pellet, is added in electric arc furnaces after coal dust and metallized pellet are mixed.It opens
Opening electric arc furnaces and making to control current strength (voltage 380V, electric current are about 160A) stablizes temperature in 1520 DEG C of heat preservation 25min, when
Between closed after and electric arc furnaces and pour out molten iron from the tapping mouth of a river rapidly, stay in a clinker in electric arc furnaces.
3, molten point secondary (molten point of " deep reduction ")
Molten iron blocks the tapping mouth of a river and opens electric arc furnaces after being finished down, stablize electric arc furnace temperature in 1580 DEG C of (voltages
380V, electric current are about 190A), will it is primary it is slag melting after points of 4 times every minor ticks 1 minute by aforementioned ready coal dust and oxidation
The mixture of calcium powder is added in electric arc furnaces from fire door, is uniformly mixed mixture under the stirring action of electric arc with clinker.
Electric arc furnaces is closed after 40min and rapidly pours out high vanadium ferroalloy water and secondary clinker, obtains high vanadium after high vanadium molten iron natural cooling
The pig iron.
It is 0.76kg, 3.76wt% containing V that the present embodiment, which obtains high vanadium iron quality,；Low vanadium iron quality is 6.38kg, is contained
V 0.05wt%；Secondary furnace vanadium slag quality is 3.35kg, contains V2O50.28wt%；Vanadium into high vanadium pig iron rate be 77.12wt%.
Embodiment 4:
The preparation method of the high vanadium pig iron of the present embodiment, comprising the following steps:
1, material prepares
The metallized pellet 10kg that degree of metalization is 10mm for 70%, partial size is selected, the group in metallized pellet becomes
(wt%): TFe 52.2, FeO 22.5, V2O50.58, TiO219.8, CaO 2, SiO24.8.Carbonaceous restores in the present embodiment
Agent is coke powder, and the fixed carbon content of coke powder is 78.20wt%.The granularity of coke powder and calcium oxide powder is 0.25mm.Weigh 150g coke powder
It is uniformly mixed with 300g calcium oxide powder stand-by.
2, molten point primary (molten point of " shallow reduction ")
It is incorporated 1000g coke powder in metallized pellet, is added in electric arc furnaces after coke powder and metallized pellet are mixed.It opens
Opening electric arc furnaces and making to control current strength (voltage 380V, electric current are about 150A) stablizes temperature in 1500 DEG C of heat preservation 30min, when
Between closed after and electric arc furnaces and pour out molten iron from the tapping mouth of a river rapidly, stay in a clinker in electric arc furnaces.
3, molten point secondary (molten point of " deep reduction ")
Molten iron blocks the tapping mouth of a river and opens electric arc furnaces after being finished down, stablize electric arc furnace temperature in 1550 DEG C of (voltages
380V, electric current are about 180A), will it is primary it is slag melting after point 5 times every minor tick 1 minute, i.e., in 5min in points 5 times will be aforementioned
The mixture of ready coke powder and calcium oxide powder is added in electric arc furnaces from fire door, makes mixture under the stirring action of electric arc
It is uniformly mixed with clinker.Electric arc furnaces is closed after 60min and rapidly pours out high vanadium ferroalloy water and secondary clinker, and high vanadium molten iron is natural
The high vanadium pig iron is obtained after cooling.
It is 0.72kg that the present embodiment, which obtains high vanadium iron quality, contains V3.56wt%；Low vanadium iron quality is 6.38kg, is contained
V0.06wt%；Secondary furnace vanadium slag quality is 3.45kg, contains V2O50.16wt%；Vanadium into high vanadium pig iron rate be 78.85wt%.
Embodiment 5:
The preparation method of the high vanadium pig iron of the present embodiment, comprising the following steps:
1, material prepares
The metallized pellet 10kg that degree of metalization is 100mm for 90%, partial size is selected, the group in metallized pellet becomes
(wt%): TFe 78.2, FeO 9.2, V2O51.43 TiO210.02, CaO 0.54, SiO23.08.Carbonaceous in the present embodiment
Reducing agent is graphite powder, and the fixed carbon content of graphite powder is 98.00wt%.The granularity of graphite powder and calcium oxide powder is 0.55mm.Claim
It measures 50g graphite powder and 100g calcium oxide powder is uniformly mixed for use.
2, molten point primary (molten point of " shallow reduction ")
It is incorporated 300g graphite powder in metallized pellet, is added to electric arc furnaces after graphite powder and metallized pellet are mixed
In.Opening electric arc furnaces makes control current strength (voltage 380V, electric current are about 180A) stablize temperature in 1550 DEG C of heat preservations
10min, time close electric arc furnaces after and pour out molten iron from the tapping mouth of a river rapidly, stay in a clinker in electric arc furnaces.
3, molten point secondary (molten point of " deep reduction ")
Molten iron blocks the tapping mouth of a river and opens electric arc furnaces after being finished down, stablize electric arc furnace temperature in 1600 DEG C of (voltages
380V, electric current are about 200A), will it is primary it is slag melting after point 3 times every minor tick 1 minute, i.e., in 3min in points 3 times will be aforementioned
The mixture of ready graphite powder and calcium oxide powder is added in electric arc furnaces from fire door, makes mixture in the stirring action of electric arc
It is lower to be uniformly mixed with clinker.Electric arc furnaces is closed after 10min and rapidly pours out high vanadium ferroalloy water and secondary clinker, and high vanadium molten iron is certainly
So the high vanadium pig iron is obtained after cooling.
It is 0.84kg, 7.08wt% containing V that the present embodiment, which obtains high vanadium iron quality,；Low vanadium iron quality is 6.02kg, is contained
V 0.09wt%；Secondary furnace vanadium slag quality is 3.12kg, contains V2O50.87wt%；Vanadium into high vanadium pig iron rate be 74.25wt%.
The working principle of the invention is: the vanadium titano-magnetite metallization ball that the present invention first " will shallowly restore " by step (1)
Vanadium enrichment in group obtains in clinker containing the lower pig iron of vanadium and a clinker high containing vanadium；Then right using step (2)
Clinker carries out " deep reduction ", obtains the high vanadium pig iron.Specifically, during molten point of the first reduction-of step (1), control
The dosage of the carbonaceous reducing agent of system is 3~10wt% of metallized pellet quality, to make remaining FeO content in a clinker
It is maintained in the range of 9~13wt%, the holding of FeO content can effectively prevent vanadium within this range and be reduced and enter low vanadium iron
In water, to help to make in vanadium enrichment Yu Yici clinker, low vanadium-containing molten iron is released, and obtains a clinker high containing vanadium, is reached
By the purpose in vanadium enrichment Yu Yici clinker.
Then, during molten point of the deep reduction-of step (2), in the mixture of addition carbonaceous reducing agent make by
Remaining FeO content is maintained in the range of 0~3wt% in the secondary clinker that " deep reduction " obtains afterwards, is conducive to vanadium and is reduced
And enter in high vanadium ferroalloy water；Meanwhile calcium oxide powder is due to can increase the mobility of secondary clinker in the mixture of addition, to have
It is reduced conducive to vanadium into high vanadium ferroalloy water, and then is conducive to slag iron separation, finally make vanadium enrichment in high vanadium ferroalloy water, obtain
The high vanadium pig iron.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of preparation method of the high vanadium pig iron characterized by comprising
(1) by the carbonaceous of vanadium titano-magnetite metallized pellet and the 3-10wt% for accounting for the vanadium titano-magnetite metallized pellet
Reducing agent mixing is placed in melting in smelting furnace, puts immediately after rising to 1500-1550 DEG C by melting furnace temperature, keep the temperature 10-30min
Low vanadium-containing molten iron out retains clinker；And
(2) smelting temperature is risen to 1550~1600 DEG C again, interior point of 3~5 addition carbonaceous reducing agents and the oxygen in 3~5min
Change the mixture that calcium powder is formed, after keeping the temperature 10~60min, releases high vanadium molten iron immediately, the high vanadium pig iron is obtained after solidification；
Wherein, the vanadium titano-magnetite metallized pellet includes following components: the TFe of 50~80wt%, 5~25wt% FeO,
The V of 0.5~1.5wt%2O5, 10~20wt% TiO2, 0.5~2wt% CaO and 3~5wt% SiO2；
The dosage of carbonaceous reducing agent is the 0.5-1.5wt% of the vanadium titano-magnetite metallized pellet, calcium oxide in step (2)
The dosage of powder is the 1-3wt% of the vanadium titano-magnetite metallized pellet.
2. the preparation method of the high vanadium pig iron according to claim 1, which is characterized in that in step (1), in low vanadium-containing molten iron
The content of vanadium is lower than 0.1wt%, and the content of FeO is 9~13wt% in clinker.
3. the preparation method of the high vanadium pig iron according to claim 1 or 2, which is characterized in that the vanadium titano-magnetite metal
The degree of metalization of pellet is 70~90%, and the partial size of the vanadium titano-magnetite metallized pellet is 10~100mm.
4. the preparation method of the high vanadium pig iron according to claim 3, which is characterized in that the carbonaceous reducing agent be coal dust,
One of coke powder and graphite powder or multiple combinations.
5. the preparation method of the high vanadium pig iron according to claim 4, which is characterized in that the partial size of the carbonaceous reducing agent is small
In 1mm.
6. the preparation method of the high vanadium pig iron according to claim 3, which is characterized in that the partial size of the calcium oxide powder is less than
1mm。
7. the preparation method of the high vanadium pig iron according to claim 3, which is characterized in that the smelting furnace is blast furnace, electric arc
Furnace, mineral hot furnace, open hearth or Muffle furnace.
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| CN110592303B (en) * | 2019-08-16 | 2020-09-29 | 吉林省金源科技有限公司 | Method for smelting vanadium-containing pig iron from vanadium-containing titanomagnetite |
| CN111057843B (en) * | 2019-12-31 | 2021-04-27 | 攀枝花市恒豪铸造有限公司 | Method for producing vanadium-containing pig iron by using vanadium-containing steel slag |
| CN115305310B (en) * | 2022-09-13 | 2023-10-20 | 江苏省沙钢钢铁研究院有限公司 | Use method of metallized pellet in electric arc furnace |
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| CN103421923B (en) * | 2013-08-29 | 2015-09-16 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of smelting process of vanadium-bearing hot metal |
| CN104087703B (en) * | 2014-07-04 | 2016-03-16 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of smelting process of schreyerite metallized pellet |
| CN105087961B (en) * | 2015-08-10 | 2018-01-05 | 中冶南方工程技术有限公司 | Utilize the method for vanadium, iron, titanium in electric arc furnaces high efficiente callback vanadium titanium pellet |
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Effective date of registration: 20201125 Address after: Room 202, building 5, Bailian innovation and Technology Industrial Park, 16 Xiaguang Avenue, Xingtang sub district office, Linquan County, Fuyang City, Anhui Province Patentee after: Fuyang Keyou Testing Technology Co., Ltd Address before: 617000 Airport Road, Panzhihua, Sichuan, No. 10 Patentee before: PANZHIHUA University |