CN107090533A - A kind of high vanadium pig iron and preparation method thereof - Google Patents
A kind of high vanadium pig iron and preparation method thereof Download PDFInfo
- Publication number
- CN107090533A CN107090533A CN201710451202.1A CN201710451202A CN107090533A CN 107090533 A CN107090533 A CN 107090533A CN 201710451202 A CN201710451202 A CN 201710451202A CN 107090533 A CN107090533 A CN 107090533A
- Authority
- CN
- China
- Prior art keywords
- vanadium
- pig iron
- preparation
- magnetite
- high vanadium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- 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
-
- 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
-
- 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 high vanadium pig iron and preparation method thereof, belong to metallurgical technology field.Preparation method includes：Vanadium titano-magnetite metallized pellet and 3 10wt% for accounting for vanadium titano-magnetite metallized pellet carbonaceous reducing agent are mixed and are placed in melting in smelting furnace, smelting temperature is risen to 1,500 1550 DEG C, is incubated after 10 30min and releases low vanadium-containing molten iron immediately, retains clinker；And smelting temperature is risen to 1550~1600 DEG C again, interior point of 3~5 addition carbonaceous reducing agents and the compound of calcium oxide powder formation, are incubated after 10~60min, high vanadium molten iron are released immediately, the high vanadium pig iron is obtained after solidification in 3~5min.High vanadium pig iron content of vanadium prepared by the present invention is high, and its vanadium-rich slag produced goes for directly producing vanadium iron.
Description
Technical field
The present invention relates to metallurgical technology field, and in particular to a kind of high vanadium pig iron and preparation method thereof.
Background technology
China's Panxi Area, Sichuan Province v-ti magnetite ore reserves is huge.It is main that v element in current vanadium titano-magnetite is extracted
Mode is that direct-reduction-molten point or blast furnace process obtain pig iron containing vanadium, then obtains vanadium product by subsequent step.
Given birth to for the relatively low vanadium that contains of the vanadium content obtained with existing direct-reduction-molten point or smelting vanadium-titanium magnetite by blast furnace
Iron (V≤1wt%), it can only smelt V2O5Content is less than 20wt% vanadium slag, and such vanadium slag can typically be only used to production
V2O5, it is impossible to it is applied to directly produce vanadium iron well.And the impurity content of this vanadium slag is high, for producing V2O5When
Higher energy consumption can be caused, increases production cost.
The content of the invention
In order to solve the problem of prior art is present, it is an object of the present invention to provide a kind of preparation of the high vanadium pig iron
Method, to solve the problem of existing pig iron containing vanadium content of vanadium is relatively low.
It is another object of the present invention to provide a kind of high vanadium pig iron, its content of vanadium is high, and its vanadium-rich slag produced can be with
Suitable for directly producing vanadium iron.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：
A kind of preparation method of the high vanadium pig iron, including：
(1) by vanadium titano-magnetite metallized pellet and the 3-10wt% for accounting for vanadium titano-magnetite metallized pellet carbonaceous also
Former agent mixing is placed in melting in smelting furnace, and low vanadium is released immediately after rising to 1500-1550 DEG C by smelting temperature, be incubated 10-30min
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
With the compound of calcium oxide powder formation, it is incubated after 10~60min, high vanadium molten iron is released immediately, the high vanadium pig iron is obtained after solidification；
Wherein, the dosage of carbonaceous reducing agent is the 0.5-1.5wt% of 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 the step (1) of the present invention, the dosage for selecting the carbonaceous reducing agent 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 clinker
In remaining FeO contents can be maintained in the range of 9~13wt% so that prevent vanadium to be reduced and into the molten low vanadium separated
In molten iron, and then help to make vanadium enrichment in a clinker.If adding excessive carbonaceous reducing agent in the process, it can drop
Residual F eO content in a low clinker, and then cause a part of vanadium to enter in low vanadium-containing molten iron, and vanadium is reduced in a clinker
Enrichment degree.Meanwhile, the addition of carbonaceous reducing agent is in the range of 3%~10% according to the degree of metalization of metallized pellet
Selected, the higher carbonaceous reducing agent that need to be added of degree of metalization of pelletizing is fewer.Vice versa.
Steel-making can be can be used for or Converter Oxigen Blowing vanadium extraction is used as in addition, the present invention obtains low vanadium molten iron in step (1)
Cooling agent.
In the step (2) of the present invention, the purpose of 0.5%~1.5% carbonaceous reducing agent of pellet quality is added again
It is excessive FeO in the clinker obtained after molten point of reduction step (1), and keeps remaining FeO contents in secondary clinker
In the range of 0~3wt%, vanadium is conducive to be reduced into high vanadium ferroalloy water, so as 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 scope, 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 and high vanadium ferroalloy water；Should if carbonaceous reducing agent content is less than
Scope, then can cause FeO too high levels in secondary clinker, be unfavorable for vanadium enrichment in the high vanadium pig iron.
In the step (2) of the present invention, the purpose for adding calcium oxide powder is the basicity for providing secondary clinker, so as to reduce
The fusing point of secondary clinker, increases the mobility of secondary clinker, is conducive to vanadium to be reduced into high vanadium ferroalloy water, is conducive to slag iron point
From.
In the step (1) and (2) of the present invention, molten iron is released immediately so that molten iron can be efficiently separated with clinker, so that
Avoid causing molten steel solidification because emitting rate is too slow, and influence molten point of effect." stood it should be noted that the present invention is signified
I.e. " refer to insulation arrive the corresponding time after, molten iron is released as quickly as possible, insulation terminate with release molten iron during, stop when
Between it is more short better, " immediately " includes but is not limited to critical implications such as " at once, " at once, the restriction of the word with by molten iron with
Clinker is efficiently separated as main purpose.
The present invention is by controlling trend of the vanadium in slag and iron, by vanadium enrichment in the fraction pig iron, so as to obtain high vanadium
The pig iron.First by the vanadium enrichment in the vanadium titano-magnetite metallized pellet of shallow reduction in slag, obtain containing the relatively low 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 is by existing metallized pellet
Trend of the step of " releasing low vanadium-containing molten iron " and " plus compound " are added on the molten division technique control vanadium in clinker and molten iron, will
Vanadium enrichment, so as to obtain the high vanadium pig iron, meets the demand of industrialization in the fraction pig iron.Further, of the invention preferable
Embodiment in, the content of vanadium is less than 0.1wt% in low vanadium-containing molten iron, and FeO content 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 particle diameter 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：
50~80wt% TFe, 5~25wt% FeO, 0.5~1.5wt% V2O5, 10~20wt% TiO2, 0.5~2wt%
CaO and 3~5wt% SiO2.Wherein, TFe represents 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 combination.
Further, in preferred embodiments of the present invention, the particle diameter of above-mentioned carbonaceous reducing agent is less than 1mm.
Further, in preferred embodiments of the present invention, the particle diameter 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 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 advantages that：
The high vanadium pig iron that vanadium content is more than 1wt% is made by melting office reason twice by vanadium enrichment in the present invention, then can use and turn
The methods such as stove vanadium extraction prepare V2O5Content is 40wt% or so vanadium-rich slag, and vanadium-rich slag can be directly used for producing vanadium iron, then
Avoid production V2O5The step for, shorten the flow of production vanadium iron, reduce production cost.
Brief description of the drawings
Fig. 1 is the process chart of the preparation method of the high vanadium pig iron of the invention.
Embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.Unreceipted actual conditions person in embodiment, the bar advised according to normal condition or manufacturer
Part is carried out.Agents useful for same or the unreceipted production firm person of instrument, are the conventional products that can be obtained by commercially available purchase.
Fig. 1 is refer to, preparation method of the invention is mainly what is completed by procedure below：
Metallized pellet and carbonaceous reducing agent are subjected to batch mixing, molten point is then carried out in smelting furnace, it is this time molten be divided into it is " shallow
Molten point of reduction ", releases low vanadium molten iron, obtains the low vanadium pig iron and a high clinker of vanadium content；Then carbonaceous reduction is added
The compound 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 present invention signified " shallow reduction " 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 be defined as " deep reduction ".
With reference to embodiment, the present invention is further described.In the following example cited by the present invention, to turn bottom
Exemplified by the obtained metallized pellet of stove direct-reduction Panzhihua sefstromite concentrate carbon-burdened pellet, choose degree of metalization for (70~
90) % raw material.
Embodiment 1：
The preparation method of the high vanadium pig iron of the present embodiment, comprises the following steps：
1st, material prepares
Selection degree of metalization is that the composition in the metallized pellet 10kg that 87.68%, particle diameter is 50mm, metallized pellet is
(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 it is 80.29wt% that coal dust, which fixes carbon content,.The granularity of coal dust and calcium oxide powder is 0.25mm.Weigh
100g coal dusts and 100g calcium oxide powders are well mixed stand-by.
2nd, once melt point (molten point of " a shallow reduction ")
400g coal dusts are 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 electric current intensity (voltage is 380V, and electric current is about 150A) temperature stabilization is existed
1500 DEG C of insulation 15min, the time closes electric arc furnaces after and pours out low vanadium-containing molten iron from the mouth of a river of tapping a blast furnace rapidly, stays in a clinker
In electric arc furnaces.
3rd, secondary molten point (molten point of " deep reduction ")
Molten iron is blocked after being finished down to tap a blast furnace the mouth of a river and opens electric arc furnaces, and making electric arc furnace temperature stable, (voltage is at 1580 DEG C
380V, electric current is about 190A), will it is once slag melting after points 4 times per minor ticks 1 minute, i.e., in 4min in divide 4 times will be foregoing
The compound of ready coal dust and calcium oxide powder makes compound under the stirring action of electric arc from fire door is added to electric arc furnaces
It is well mixed with clinker.Electric arc furnaces is closed after 30min and rapidly high vanadium ferroalloy water and secondary clinker is poured out, high vanadium ferroalloy water is naturally cold
But the high vanadium pig iron is obtained afterwards.
The present embodiment obtains high vanadium iron quality for 0.54kg, 6.02wt% containing V；Low vanadium iron quality is 6.47kg, is contained
V 0.07wt%；Secondary stove vanadium slag quality is 2.87kg, containing V2O50.23wt%；Vanadium enters high vanadium pig iron rate for 85.30wt%.
Embodiment 2：
The preparation method of the high vanadium pig iron of the present embodiment, comprises the following steps：
1st, material prepares
Selection degree of metalization is that the composition in the metallized pellet 10kg that 82.32%, particle diameter is 50mm, metallized pellet is
(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 it is 80.29wt% that coal dust, which fixes carbon content,.The granularity of coal dust and calcium oxide powder is 0.25mm.Weigh
120g coal dusts and 200g calcium oxide powders are well mixed stand-by.
2nd, once melt point (molten point of " a shallow reduction ")
600g coal dusts are incorporated in metallized pellet, are added to after coal dust and metallized pellet are mixed in electric arc furnaces.Open
Opening electric arc furnaces makes control electric current intensity (voltage is 380V, and electric current is about 160A) temperature stabilization is incubated 15min at 1520 DEG C, when
Between closed after and electric arc furnaces and pour out molten iron from the mouth of a river of tapping a blast furnace rapidly, a clinker is stayed in electric arc furnaces.
3rd, secondary molten point (molten point of " deep reduction ")
Molten iron is blocked after being finished down to tap a blast furnace the mouth of a river and opens electric arc furnaces, and making electric arc furnace temperature stable, (voltage is at 1600 DEG C
380V, electric current is about 200A), will it is once slag melting after points 4 times per minor ticks 1 minute by foregoing ready coal dust and oxidation
The compound of calcium powder makes compound be well mixed under the stirring action of electric arc with clinker from fire door is added to electric arc furnaces.
Electric arc furnaces is closed after 30min and rapidly high vanadium ferroalloy water and secondary clinker is poured out, high vanadium is obtained after high vanadium molten iron natural cooling
The pig iron.
The present embodiment obtains high vanadium iron quality for 0.63kg, 5.12wt% containing V；Low vanadium iron quality is 6.58kg, is contained
V 0.05wt%；Secondary stove vanadium slag quality is 2.97kg, containing V2O50.22wt%；Vanadium enters high vanadium pig iron rate for 82.28wt%.
Embodiment 3：
The preparation method of the high vanadium pig iron of the present embodiment, comprises the following steps：
1st, material prepares
Selection degree of metalization is that the composition in the metallized pellet 10kg that 75.50%, particle diameter is 50mm, metallized pellet is
(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 it is 80.29wt% that coal dust, which fixes carbon content,.The granularity of coal dust and calcium oxide powder is 0.35mm.Weigh
150g coal dusts and 300g calcium oxide powders are well mixed stand-by.
2nd, once melt point (molten point of " a shallow reduction ")
800g coal dusts are incorporated in metallized pellet, are added to after coal dust and metallized pellet are mixed in electric arc furnaces.Open
Opening electric arc furnaces makes control electric current intensity (voltage is 380V, and electric current is about 160A) temperature stabilization is incubated 25min at 1520 DEG C, when
Between closed after and electric arc furnaces and pour out molten iron from the mouth of a river of tapping a blast furnace rapidly, a clinker is stayed in electric arc furnaces.
3rd, secondary molten point (molten point of " deep reduction ")
Molten iron is blocked after being finished down to tap a blast furnace the mouth of a river and opens electric arc furnaces, and making electric arc furnace temperature stable, (voltage is at 1580 DEG C
380V, electric current is about 190A), will it is once slag melting after points 4 times per minor ticks 1 minute by foregoing ready coal dust and oxidation
The compound of calcium powder makes compound be well mixed under the stirring action of electric arc with clinker from fire door is added to electric arc furnaces.
Electric arc furnaces is closed after 40min and rapidly high vanadium ferroalloy water and secondary clinker is poured out, high vanadium is obtained after high vanadium molten iron natural cooling
The pig iron.
The present embodiment obtains high vanadium iron quality for 0.76kg, 3.76wt% containing V；Low vanadium iron quality is 6.38kg, is contained
V 0.05wt%；Secondary stove vanadium slag quality is 3.35kg, containing V2O50.28wt%；Vanadium enters high vanadium pig iron rate for 77.12wt%.
Embodiment 4：
The preparation method of the high vanadium pig iron of the present embodiment, comprises the following steps：
1st, material prepares
Selection degree of metalization is that the composition in the metallized pellet 10kg that 70%, particle diameter is 10mm, metallized pellet is
(wt%)：TFe 52.2, FeO 22.5, V2O50.58, TiO219.8, CaO 2, SiO24.8.Carbonaceous is reduced in the present embodiment
Agent is coke powder, and it is 78.20wt% that coke powder, which fixes carbon content,.The granularity of coke powder and calcium oxide powder is 0.25mm.Weigh 150g coke powders
It is well mixed with 300g calcium oxide powders stand-by.
2nd, once melt point (molten point of " a shallow reduction ")
1000g coke powders are incorporated in metallized pellet, are added to after coke powder and metallized pellet are mixed in electric arc furnaces.Open
Opening electric arc furnaces makes control electric current intensity (voltage is 380V, and electric current is about 150A) temperature stabilization is incubated 30min at 1500 DEG C, when
Between closed after and electric arc furnaces and pour out molten iron from the mouth of a river of tapping a blast furnace rapidly, a clinker is stayed in electric arc furnaces.
3rd, secondary molten point (molten point of " deep reduction ")
Molten iron is blocked after being finished down to tap a blast furnace the mouth of a river and opens electric arc furnaces, and making electric arc furnace temperature stable, (voltage is at 1550 DEG C
380V, electric current is about 180A), will it is once slag melting after points 5 times per minor ticks 1 minute, i.e., in 5min in divide 5 times will be foregoing
The compound of ready coke powder and calcium oxide powder makes compound under the stirring action of electric arc from fire door is added to electric arc furnaces
It is well mixed with clinker.Electric arc furnaces is closed after 60min and rapidly high vanadium ferroalloy water and secondary clinker is poured out, high vanadium molten iron is natural
The high vanadium pig iron is obtained after cooling.
The present embodiment obtains high vanadium iron quality for 0.72kg, 3.56wt% containing V；Low vanadium iron quality is 6.38kg, is contained
V 0.06wt%；Secondary stove vanadium slag quality is 3.45kg, containing V2O50.16wt%；Vanadium enters high vanadium pig iron rate for 78.85wt%.
Embodiment 5：
The preparation method of the high vanadium pig iron of the present embodiment, comprises the following steps：
1st, material prepares
Selection degree of metalization is that the composition in the metallized pellet 10kg that 90%, particle diameter is 100mm, metallized pellet is
(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 it is 98.00wt% that graphite powder, which fixes carbon content,.The granularity of graphite powder and calcium oxide powder is 0.55mm.Claim
Amount 50g graphite powders and 100g calcium oxide powders are well mixed stand-by.
2nd, once melt point (molten point of " a shallow reduction ")
300g graphite powders are incorporated in metallized pellet, electric arc furnaces is added to after graphite powder and metallized pellet are mixed
In.Opening electric arc furnaces makes control electric current intensity (voltage is 380V, and electric current is about 180A) make temperature stabilization in 1550 DEG C of insulations
10min, the time closes electric arc furnaces after and pours out molten iron from the mouth of a river of tapping a blast furnace rapidly, a clinker is stayed in electric arc furnaces.
3rd, secondary molten point (molten point of " deep reduction ")
Molten iron is blocked after being finished down to tap a blast furnace the mouth of a river and opens electric arc furnaces, and making electric arc furnace temperature stable, (voltage is at 1600 DEG C
380V, electric current is about 200A), will it is once slag melting after points 3 times per minor ticks 1 minute, i.e., in 3min in divide 3 times will be foregoing
The compound of ready graphite powder and calcium oxide powder makes compound in the stirring action of electric arc from fire door is added to electric arc furnaces
It is lower to be well mixed with clinker.Electric arc furnaces is closed after 10min and rapidly high vanadium ferroalloy water and secondary clinker is poured out, high vanadium molten iron is certainly
So the high vanadium pig iron is obtained after cooling.
The present embodiment obtains high vanadium iron quality for 0.84kg, 7.08wt% containing V；Low vanadium iron quality is 6.02kg, is contained
V 0.09wt%；Secondary stove vanadium slag quality is 3.12kg, containing V2O50.87wt%；Vanadium enters high vanadium pig iron rate for 74.25wt%.
The present invention operation principle be：The present invention is by step (1) first by the vanadium titano-magnetite metallization ball of " shallow reduction "
Vanadium enrichment in group is obtained containing the relatively low pig iron of vanadium and containing a high clinker of vanadium in clinker；Then it is right by step (2) again
Clinker carries out " deep reduction ", obtains the high vanadium pig iron.Specifically, during the first reduction-molten point of step (1), control
The dosage of the carbonaceous reducing agent of system is 3~10wt% of metallized pellet quality, so that remaining FeO contents in a clinker
It is maintained in the range of 9~13wt%, FeO contents are maintained at this scope interior energy and effectively prevent vanadium to be reduced and enter low vanadium iron
In water, so as to help to make vanadium enrichment in a clinker, low vanadium-containing molten iron is released, and is obtained containing a high clinker of vanadium, is reached
By purpose of the vanadium enrichment in a clinker.
Then, during the deep reduction-molten point of step (2), carbonaceous reducing agent makes by " deep in the compound of addition
Remaining FeO contents are maintained in the range of 0~3wt% in the secondary clinker that reduction " is obtained afterwards, are conducive to vanadium to be reduced and enter
Enter in high vanadium ferroalloy water；Meanwhile, calcium oxide powder is due to that can increase the mobility of secondary clinker in the compound of addition, so as to be conducive to
Vanadium is reduced into high vanadium ferroalloy water, and then is conducive to slag sluicing system, finally causes vanadium enrichment in high vanadium ferroalloy water, to obtain high vanadium
The pig iron.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (10)
1. a kind of preparation method of the high vanadium pig iron, it is characterised in that including：
(1) by vanadium titano-magnetite metallized pellet and the 3-10wt% for accounting for the vanadium titano-magnetite metallized pellet carbonaceous also
Former agent mixing is placed in melting in smelting furnace, releases low immediately after rising to 1500-1550 DEG C by melting furnace temperature, be incubated 10-30min
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 and oxygen in 3~5min
Change after the compound of calcium powder formation, 10~60min of insulation, high vanadium molten iron is released immediately, the high vanadium pig iron is obtained after solidification；
Wherein, the dosage of carbonaceous reducing agent is the 0.5-1.5wt% of the vanadium titano-magnetite metallized pellet, oxygen in step (2)
The dosage for changing calcium 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, it is characterised in that in step (1), in low vanadium-containing molten iron
The content that the content of vanadium is less than FeO in 0.1wt%, clinker is 9~13wt%.
3. the preparation method of the high vanadium pig iron according to claim 1 or 2, it is characterised in that the vanadium titano-magnetite metal
The degree of metalization of pellet is 70~90%, and the particle diameter of the vanadium titano-magnetite metallized pellet is 10~100mm.
4. the preparation method of the high vanadium pig iron according to claim 3, it is characterised in that the vanadium titano-magnetite metallization ball
Group includes following components：50~80wt% TFe, 5~25wt% FeO, 0.5~1.5wt% V2O5, 10~20wt%
TiO2, 0.5~2wt% CaO and 3~5wt% SiO2。
5. the preparation method of the high vanadium pig iron according to claim 4, it is characterised in that the carbonaceous reducing agent be coal dust,
One or more combinations in coke powder and graphite powder.
6. the preparation method of the high vanadium pig iron according to claim 5, it is characterised in that the particle diameter of the carbonaceous reducing agent is small
In 1mm.
7. the preparation method of the high vanadium pig iron according to claim 4, it is characterised in that the particle diameter of the calcium oxide powder is less than
1mm。
8. the preparation method of the high vanadium pig iron according to claim 4, it is characterised in that the smelting furnace is blast furnace, electric arc
Stove, mineral hot furnace, open hearth or Muffle furnace.
9. the high vanadium pig iron prepared using the preparation method described in any one of claim 1~8.
10. the high vanadium pig iron according to claim 9, it is characterised in that in the high vanadium pig iron content of vanadium be 1~
10wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710451202.1A CN107090533B (en) | 2017-06-15 | 2017-06-15 | A kind of preparation method of the high vanadium pig iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710451202.1A CN107090533B (en) | 2017-06-15 | 2017-06-15 | A kind of preparation method of the high vanadium pig iron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107090533A true CN107090533A (en) | 2017-08-25 |
| CN107090533B CN107090533B (en) | 2019-03-08 |
Family
ID=59639728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710451202.1A Active CN107090533B (en) | 2017-06-15 | 2017-06-15 | A kind of preparation method of the high vanadium pig iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107090533B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107868872A (en) * | 2017-11-30 | 2018-04-03 | 攀枝花学院 | The method that vanadium chromium reducing slag two step method reduction melting prepares vanadium ferrochrome |
| CN110592303A (en) * | 2019-08-16 | 2019-12-20 | 吉林省金源科技有限公司 | Method for smelting vanadium-containing pig iron from vanadium-containing titanomagnetite |
| CN111057843A (en) * | 2019-12-31 | 2020-04-24 | 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 |
| CN115305310A (en) * | 2022-09-13 | 2022-11-08 | 江苏省沙钢钢铁研究院有限公司 | Method for using metallized pellets in electric arc furnace |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103421923A (en) * | 2013-08-29 | 2013-12-04 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for smelting melted iron with vanadium |
| CN104087703A (en) * | 2014-07-04 | 2014-10-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Smelting method of schreyerite metalized pellets |
| CN105087961A (en) * | 2015-08-10 | 2015-11-25 | 中冶南方工程技术有限公司 | Method for efficiently recycling vanadium, iron and titanium in vanadium-titanium metallized pellet through electric arc furnace |
-
2017
- 2017-06-15 CN CN201710451202.1A patent/CN107090533B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103421923A (en) * | 2013-08-29 | 2013-12-04 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for smelting melted iron with vanadium |
| CN104087703A (en) * | 2014-07-04 | 2014-10-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Smelting method of schreyerite metalized pellets |
| CN105087961A (en) * | 2015-08-10 | 2015-11-25 | 中冶南方工程技术有限公司 | Method for efficiently recycling vanadium, iron and titanium in vanadium-titanium metallized pellet through electric arc furnace |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107868872A (en) * | 2017-11-30 | 2018-04-03 | 攀枝花学院 | The method that vanadium chromium reducing slag two step method reduction melting prepares vanadium ferrochrome |
| CN110592303A (en) * | 2019-08-16 | 2019-12-20 | 吉林省金源科技有限公司 | Method for smelting vanadium-containing pig iron from vanadium-containing titanomagnetite |
| 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 |
| CN111057843A (en) * | 2019-12-31 | 2020-04-24 | 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 |
| CN115305310A (en) * | 2022-09-13 | 2022-11-08 | 江苏省沙钢钢铁研究院有限公司 | Method for using metallized pellets in electric arc furnace |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107090533B (en) | 2019-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107090533A (en) | A kind of high vanadium pig iron and preparation method thereof | |
| CN102094097B (en) | Production process for smelting vanadium ferro-alloy by electro-aluminothermic process | |
| CN108486313B (en) | A kind of smelting technology promoting heat resisting steel intergranular degree of purity | |
| CN103924157B (en) | A kind of smelting process of titaniferous ferritic stainless steel | |
| CN109897938A (en) | Produce Cr13The electric furnace and refining furnace smelting control method of series stainless steel | |
| CN101381787B (en) | Smelting method of high-alloy steel | |
| CN112301236A (en) | Method for producing high-grade niobium concentrate from niobium rough concentrate | |
| CN103602781A (en) | Method for lowering chrome oxide in arc furnace slag in stainless steel smelting process | |
| CN111286577A (en) | Smelting method of ultra-low titanium steel | |
| CN114214553A (en) | Refining method of high-carbon ferrochrome | |
| CN104946845B (en) | Method for producing high-carbon-chrome bearing steel from vanadium-titanium-containing molten iron | |
| CN105063266B (en) | A kind of converter steel making method | |
| CN111705227B (en) | Method for smelting titanium slag by two-step method | |
| CN103643056A (en) | Smelting method of low-carbon ferromanganese | |
| CN110714106B (en) | Blast furnace optimization smelting method of high-titanium type vanadium titano-magnetite | |
| CN103343276B (en) | A kind of Chromium molybdenum iron alloy and preparation method thereof | |
| CN103421925A (en) | Method of preparing titanium dichloride slag | |
| CN103451457B (en) | A kind of method preparing high-quality ferronickel | |
| JPS61166910A (en) | Production of chromium-containing alloy | |
| CN111074037B (en) | Process method for upgrading structure of manganese-rich slag smelting product | |
| CN110527789B (en) | Vacuum induction furnace desulfurization and dephosphorization process | |
| JP2013064179A (en) | Method for preventing elution of hexavalent chromium in slag, and slag | |
| CN111826496A (en) | Method for shortening smelting period of electric furnace | |
| CN112593046A (en) | Smelting method for improving recovery rate of niobium in niobium-containing waste | |
| CN115652184B (en) | Method for smelting ultra-pure ferrite stainless steel by using slag melting agent in AOD converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
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 |
|
| TR01 | Transfer of patent right |