CN106167845B - A kind of blowing CO2Or the method that lime stone removes carbon in vanadium-bearing hot metal - Google Patents
A kind of blowing CO2Or the method that lime stone removes carbon in vanadium-bearing hot metal Download PDFInfo
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- CN106167845B CN106167845B CN201610851634.7A CN201610851634A CN106167845B CN 106167845 B CN106167845 B CN 106167845B CN 201610851634 A CN201610851634 A CN 201610851634A CN 106167845 B CN106167845 B CN 106167845B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/068—Decarburising
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/10—Reduction of greenhouse gas [GHG] emissions
- Y02P10/122—Reduction of greenhouse gas [GHG] emissions by capturing or storing CO2
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Abstract
A kind of blowing CO of the invention2Or the method that lime stone removes carbon in vanadium-bearing hot metal, specific steps are as follows: (1) vanadium-bearing hot metal is imported into induction furnace, guarantee vanadium-bearing hot metal temperature >=1450 DEG C；(2) vanadium-bearing hot metal is stirred, forms vortex；(3) by CO2Or limestone powder is blown into whirlpool, and in molar ratio, CO2Or limestone powder blowing amount is to be blown 30~60min of time, and continue to carry out eccentric stirring 1.2~1.5 times of C element in vanadium-bearing hot metal, obtains vanadium-bearing hot metal and slag after decarburization, generates CO and unreacted CO2It is collected；(4) CO after post treatment, generates CO2, CO2It re-uses；Vanadium-bearing hot metal, slag are separated.The invention passes through blowing CO2Or lime stone, decarburization is carried out, and do not react with the V in vanadium-bearing hot metal, reach carbon drop and protect vanadium purpose, the vanadium-bearing hot metal after decarburization can directly smelt vanadium steel, greatly shorten and smelt the vanadium steel production cycle, improve vanadium utilization rate, have good economic and social benefit.
Description
Technical field:
The invention belongs to metallurgical technology fields, and in particular to a kind of blowing CO2Or carbon in lime stone removing vanadium-bearing hot metal
Method.
Background technique:
Vanadium is that content is more but the metallic element that extremely disperses in nature, is often deposited in a manner of tramp material in dispersed
It is in mineral, clearly, Independent Mineral is rare for association, and the mineral with commercial mining value are also few, therefore vanadium also belongs to
Yttrium.World's vanadium resource is abundant, but individually seldom for the rich ore of exploitation, usually with low-grade association in others
In ore, and integrated distribution is in states such as China, South Africa, Russia.Vanadium admire magnetic iron ore be vanadium essential mineral resource, China Sichuan
Panzhihua and Chengde area, which are contained, has vanadium abundant to admire magnetic iron ore, is one of maximum vanadium resource concentration zones in the whole world.
There are about 80% vanadium to be used in steel industry in the world.In steel production, vanadium is mainly used for smelting micro- conjunction
Aurification steel and other vanadium steels.Traditional smelting vanadium steel process requirement first smelts barium oxide closes at vanadium iron
Then vanadium iron is added in electric furnace or converter ladle and carries out alloying by gold.
The vanadium in China's vanadium titano-magnetite mostly uses blast furnace ironmaking-converter duplex process for extracting vanadium to extract at present.I.e. by ore
It is smelted into the pig iron, vanadium enrichment reoxidizes blowing and obtain the slag containing vanadium in molten iron.Obtained vanadium slag is produced using wet-leaching
Mode leaches into pentavalent vanadium in solution, and purified precipitation calcination processing obtains vanadic anhydride.By V2O5As raw material, it is added
Reducing agent, lime, ferrosilicon etc. are smelted, and vanadium iron is obtained.Vanadium iron is added in ladle again and is smelted, vanadium alloy is obtained.
The technique production procedure is long, and the smelting process of vanadium iron is sufficiently complex, energy consumption is high, environmental pollution is big, therefore, finds a kind of new
Succinct production vanadium steel method is very necessary.
Application No. is the patents of CN201410029170.2 to propose a kind of smelting process of vanadium-bearing hot metal vanadium extraction steel-making,
Vanadium-bearing hot metal is smelted through pneumatic steelmaking process, refining procedure and continuous casting working procedure, the pneumatic steelmaking process are as follows: vanadium extraction,
Recycle vanadium slag, steel-making.This method still needs to smelting ferrovanadium, and recycles the loss that vanadium slag be easy to cause vanadium in the process.
Traditional oxygen decarburization method, can make the V in vanadium-bearing hot metal be oxidized prior to C into slag, lead to the smelting of vanadium steel
Sweetening process is complicated.Long flow path is smelted for traditional vanadium steel, vanadium iron smelts the deficiencies of complicated, energy consumption is high, environmental pollution is big.
Summary of the invention:
In view of the deficiencies of the prior art, the invention proposes a kind of blowing CO2Or carbon in lime stone removing vanadium-bearing hot metal
Method.This method is that vanadium-bearing hot metal without oxygen blast vanadium extraction, but is directly blown into CO to it2Gas, CO2Gas sprays into lime
Stone powder aoxidizes the C in vanadium-bearing hot metal, and does not react with the V in vanadium-bearing hot metal, achievees the purpose that carbon drop protects vanadium, obtains
Decarburization after vanadium-bearing hot metal can directly smelt vanadium steel.The invention greatly shortens the production cycle for smelting vanadium steel, improves vanadium
Utilization rate, with good economic efficiency and social benefit.
To achieve the above object, the invention adopts the following technical scheme:
A kind of blowing CO2Or the method that lime stone removes carbon in vanadium-bearing hot metal, comprising the following steps:
(1) vanadium-bearing hot metal is imported into induction furnace, guarantees temperature >=1450 DEG C of vanadium-bearing hot metal；
(2) vanadium-bearing hot metal is stirred, forms the vortex that ratio of height to diameter is 0.5~2.5；
(3) by CO2Or limestone powder is blown into whirlpool, during blowing, is persistently carried out the stirring of step (2), is obtained
Vanadium-bearing hot metal and slag, gas are collected after decarburization, and gas is the CO and unreacted CO generated2；Wherein, in molar ratio,
CO2Or the limestone powder amount of being blown into: C element=(1.2~1.5) in vanadium-bearing hot metal: 1, CO2Or limestone powder is blown the time
For 30~60min；
(4) CO after post treatment, generates CO2, CO2It returns in induction furnace, re-uses；Vanadium-bearing hot metal, slag are divided
From.
In the step (1), vanadium-bearing hot metal temperature is 1450~1650 DEG C, the clinker obtained by blast furnace ironmaking, reduction
It obtains.
In the step (1), carbon mass percent is 2.0~6.0% in vanadium-bearing hot metal.
In the step (1), mass fraction containing vanadium is 0.48~0.53% in vanadium-bearing hot metal.
In the step (1), induction furnace includes slag-drip opening, row's molten iron mouth and blowing mouth；The blowing mouth is bottom blowing
One kind of mouth or side-blown mouth；The lower part of the side of the induction furnace is provided with row's molten iron mouth, in the upper of the other side of induction furnace
Portion is provided with slag-drip opening, and the bottom of induction furnace is arranged in bottom blowing mouth, and the lower part of induction furnace side is arranged in side-blown mouth；
The induction furnace is provided with agitating paddle, fan housing and flue gas purification system；The agitating paddle mounting means are as follows:
It is eccentrically mounted at the top of induction furnace；The top of induction furnace is arranged in the fan housing, and the entrance of the flue gas purification system passes through
Pipeline is connected with fan housing, and the outlet of flue gas purification system is connected by pipeline with the blowing mouth of induction furnace.
In the step (1), guarantee that the method for temperature >=1450 DEG C of vanadium-bearing hot metal is, induction furnace conducting self-heating.
In the step (2), agitating mode is that adjustment agitating paddle is inserted into the 1/3~1/2 of vanadium-bearing hot metal liquid level
Place carries out eccentric stirring, wherein eccentric mixing speed is 50-200r/min, and the degree of eccentricity is 0.1~0.8.
In the step (3), CO2Or the mode that is blown into of limestone powder is to be blown into from induction furnace bottom mouth or from sense
Furnace side mouthpiece is answered to be blown into.
In the step (3), carbon containing mass percent≤0.20% in the vanadium-bearing hot metal after decarburization.
In the step (3), mass percent containing vanadium is 0.48~0.53% in the vanadium-bearing hot metal after decarburization.
In the step (3), slag main component is CaO.
In the step (4), in induction furnace, upper layer is slag, and lower layer is vanadium-bearing hot metal, by slag from induction furnace slag discharge
Mouth discharge, vanadium-bearing hot metal are poured out from induction fire grate molten iron mouth.
In the step (4), the CO of generation and unreacted CO2Flue gas purification system is gone to via fan housing, will be handled
Gas and O afterwards2Utilization is returned to after mixed firinor fuel burning.
Decarburization principle:
CO2+ [C]=2CO (g)
Beneficial effects of the present invention:
(1) the method reduce vanadium-vanadium slag-wet process vanadium extraction-barium oxide-vanadium iron process, Neng Gouyou are blown in traditional handicraft
After blast furnace vanadium-bearing hot metal decarburization, vanadium steel is directly smelted.Process is greatly reduced, shortens smelting cycle, energy consumption is effectively reduced and mentions
The comprehensive utilization ratio of high vanadium.
(2) this method is in blowing CO2Or when limestone powder, while eccentric stirring is carried out, the bubble or lime being sparged into
Stone decomposes the CO generated2Gas is crushed as minute bubbles particle, and bubble is miniaturize, gas liquid interfacial area is considerably increased, is added
Fast response speed, while improving CO2Utilization rate.
(3)CO2Gas can be recycled, the CO of generation2Itself has certain temperature, without preheating, with [C] in melt
It reacts and reaches decarburization effect.
(4) this method is spraying into CO2Or when limestone powder, using bottom blowing or it is side-blown by the way of be blown into vanadium-bearing hot metal,
It can effectively reduce carbon content in alloy, reduce phosphorus, silicone content to a certain extent, meet steely iron water demand.
(5) for vanadium-bearing hot metal while decarburization, the vanadium that can protect in molten iron is not oxidized, can effectively avoid the burning of vanadium
Damage, process is simple and convenient, has the function of when handling the molten iron containing valuable metal element very good.
Detailed description of the invention:
Fig. 1 is the induction furnace system structure diagram using the method for the present invention；Wherein, 1- slag-drip opening；2- arranges molten iron mouth；3-
Bottom blowing mouth；5- fan housing；6- flue gas purification system；7- agitating paddle.
Fig. 2 is the induction furnace system structure diagram using the method for the present invention；Wherein, 1- slag-drip opening；2- arranges molten iron mouth；4-
Side-blown mouth；5- fan housing；6- flue gas purification system；7- agitating paddle.
Specific embodiment:
Below with reference to embodiment, the present invention is described in further detail.
Embodiment 1
Blast furnace vanadium-bearing hot metal in the embodiment of the present invention, specific ingredient are as shown in table 1.
1 blast furnace vanadium-bearing hot metal each element component content (mass fraction, %) of table
The induction furnace system structure diagram that the present embodiment uses is shown in Fig. 1.
A kind of blowing CO2Or the method that lime stone removes carbon in vanadium-bearing hot metal, comprising the following steps:
(1) clinker obtained by blast furnace ironmaking for being 1450 DEG C by temperature, the vanadium-bearing hot metal restored imported into induction
In furnace, guarantee that the temperature of vanadium-bearing hot metal is 1450 DEG C, wherein carbon containing mass percent is 2.0% in vanadium-bearing hot metal, quality containing vanadium
Score is 0.48%；
(2) adjustment agitating paddle 7 is inserted at the 1/3 of vanadium-bearing hot metal liquid level, carries out eccentric stirring to vanadium-bearing hot metal, partially
Heart degree is 0.1, mixing speed 50r/min, forms the vortex that ratio of height to diameter is 0.5；
(3) by bottom blowing mouth 3, by CO2It is blown into whirlpool, and continues eccentric stirring, in molar ratio, CO2The amount of being blown into: contain vanadium iron
C element=1.2 in water: 1, CO2Blowing time is 30min, forms vanadium-bearing hot metal and slag after decarburization；
(4) in induction furnace, lower layer is molten iron, and upper layer is slag, and lower layer's molten iron is discharged by row's molten iron mouth 2, upper layer slag by
Slag-drip opening 1 is discharged, wherein mass percent containing C is 0.08% in the vanadium-bearing hot metal after decarburization, and mass percent containing V is
0.48%, mass fraction containing P is 0.01%, and mass fraction containing Si is 0.196%；
(5) CO and unreacted CO generated2Go to flue gas purification system 6 via fan housing 5, by CO treated gas with
O2CO is generated after mixed firinor fuel burning2, return to utilization.
Embodiment 2
Blast furnace vanadium-bearing hot metal in the embodiment of the present invention, specific ingredient are as shown in table 2.
2 blast furnace vanadium-bearing hot metal each element component content (mass fraction, %) of table
The induction furnace system structure diagram that the present embodiment uses is shown in Fig. 1.
A kind of blowing CO2Or the method that lime stone removes carbon in vanadium-bearing hot metal, comprising the following steps:
(1) clinker obtained by blast furnace ironmaking for being 1500 DEG C by temperature, the vanadium-bearing hot metal restored imported into induction
In furnace, guarantee that the temperature of vanadium-bearing hot metal is 1550 DEG C, wherein carbon containing mass percent is 3.4% in vanadium-bearing hot metal, quality containing vanadium
Score is 0.51%；
(2) adjustment agitating paddle 7 is inserted at the 1/3 of vanadium-bearing hot metal liquid level, carries out eccentric stirring to vanadium-bearing hot metal, partially
Heart degree is 0.3, mixing speed 100r/min, forms the vortex that ratio of height to diameter is 1.0；
(3) by side-blown mouth 4, by CO2It is blown into whirlpool, and continues eccentric stirring, in molar ratio, CO2The amount of being blown into: contain vanadium iron
C element=1.5:1 in water, CO2Blowing time is 40min, forms vanadium-bearing hot metal and slag after decarburization；
(4) in induction furnace, lower layer is molten iron, and upper layer is slag, and lower layer's molten iron is discharged by row's molten iron mouth 2, upper layer slag by
Slag-drip opening 1 is discharged, wherein mass percent containing C is 0.10% in the vanadium-bearing hot metal after decarburization, and mass percent containing V is
0.51%, mass fraction containing P is 0.073%, and mass fraction containing Si is 0.082%；
(5) CO and unreacted CO generated2Go to flue gas purification system 6 via fan housing 5, by CO treated gas with
O2CO is generated after mixed firinor fuel burning2, return to utilization.
Embodiment 3
Blast furnace vanadium-bearing hot metal in the embodiment of the present invention, specific ingredient are as shown in table 1.
3 blast furnace vanadium-bearing hot metal each element component content (mass fraction, %) of table
The induction furnace system structure diagram that the present embodiment uses is shown in Fig. 1.
A kind of blowing CO2Or the method that lime stone removes carbon in vanadium-bearing hot metal, comprising the following steps:
(1) clinker obtained by blast furnace ironmaking for being 1650 DEG C by temperature, the vanadium-bearing hot metal restored imported into induction
In furnace, guarantee that the temperature of vanadium-bearing hot metal is 1700 DEG C, wherein carbon containing mass percent is 4.8% in vanadium-bearing hot metal, quality containing vanadium
Score is 0.49%；
(2) adjustment agitating paddle 7 is inserted at the 1/2 of vanadium-bearing hot metal liquid level, carries out eccentric stirring to vanadium-bearing hot metal, partially
Heart degree is 0.8, mixing speed 200r/min, forms the vortex that ratio of height to diameter is 2.5；
(3) by bottom blowing mouth 3, by CO2It is blown into whirlpool, and continues eccentric stirring, in molar ratio, CO2The amount of being blown into: contain vanadium iron
C element=1.5 in water: 1, CO2Blowing time is 60min, forms vanadium-bearing hot metal and slag after decarburization；
(4) in induction furnace, lower layer is molten iron, and upper layer is slag, and lower layer's molten iron is discharged by row's molten iron mouth 2, upper layer slag by
Slag-drip opening 1 is discharged, wherein mass percent containing C is 0.11% in the vanadium-bearing hot metal after decarburization, and mass percent containing V is
0.49%, mass fraction containing P is 0.081%, and mass fraction containing Si is 0.103%；
(5) CO and unreacted CO generated2Go to flue gas purification system 6 via fan housing 5, by CO treated gas with
O2CO is generated after mixed firinor fuel burning2, return to utilization.
Embodiment 4
Blast furnace vanadium-bearing hot metal in the embodiment of the present invention, specific ingredient are as shown in table 3.
4 blast furnace vanadium-bearing hot metal each element component content (mass fraction, %) of table
The induction furnace system structure diagram that the present embodiment uses is shown in Fig. 2.
A kind of blowing CO2Or the method that lime stone removes carbon in vanadium-bearing hot metal, comprising the following steps:
(1) clinker obtained by blast furnace ironmaking for being 1450 DEG C by temperature, the vanadium-bearing hot metal restored imported into induction
In furnace, guarantee that the temperature of vanadium-bearing hot metal is 1450 DEG C, wherein carbon containing mass percent is 5.2% in vanadium-bearing hot metal, quality containing vanadium
Score is 0.52%；
(2) adjustment agitating paddle 7 is inserted at the 1/3 of vanadium-bearing hot metal liquid level, carries out eccentric stirring to vanadium-bearing hot metal, partially
Heart degree is 0.6, mixing speed 150r/min, forms the vortex that ratio of height to diameter is 0.5；
(3) by side-blown mouth 4, limestone powder is blown into whirlpool, and continues eccentric stirring, in molar ratio, agstone
The end amount of being blown into: C element=1.2 in vanadium-bearing hot metal: 1, limestone powder blowing time is 30min, contains vanadium iron after forming decarburization
Water and slag；
(4) in induction furnace, lower layer is molten iron, and upper layer is slag, and lower layer's molten iron is discharged by row's molten iron mouth 2, upper layer slag by
Slag-drip opening 1 is discharged, wherein mass percent containing C is 0.14% in the vanadium-bearing hot metal after decarburization, and mass percent containing V is
0.52%, mass fraction containing P is 0.124%, and mass fraction containing Si is 0.133%；
(5) CO and unreacted CO generated2Go to flue gas purification system 6 via fan housing 5, by CO treated gas with
O2CO is generated after mixed firinor fuel burning2, return to utilization.
Embodiment 5
Blast furnace vanadium-bearing hot metal in the embodiment of the present invention, specific ingredient are as shown in table 4.
5 blast furnace vanadium-bearing hot metal each element component content (mass fraction, %) of table
The induction furnace system structure diagram that the present embodiment uses is shown in Fig. 2.
A kind of blowing CO2Or the method that lime stone removes carbon in vanadium-bearing hot metal, comprising the following steps:
(1) clinker obtained by blast furnace ironmaking for being 1650 DEG C by temperature, the vanadium-bearing hot metal restored imported into induction
In furnace, guarantee that the temperature of vanadium-bearing hot metal is 1650 DEG C, wherein carbon containing mass percent is 6.0% in vanadium-bearing hot metal, quality containing vanadium
Score is 0.53%；
(2) adjustment agitating paddle 7 is inserted at the 1/2 of vanadium-bearing hot metal liquid level, carries out eccentric stirring to vanadium-bearing hot metal, partially
Heart degree is 0.8, mixing speed 200r/min, forms the vortex that ratio of height to diameter is 1.8；
(3) by bottom blowing mouth 3, limestone powder is blown into whirlpool, and continues eccentric stirring, in molar ratio, agstone
The end amount of being blown into: C element=1.4 in vanadium-bearing hot metal: 1, CO2Blowing time is 50min, forms after decarburization vanadium-bearing hot metal and molten
Slag；
(4) in induction furnace, lower layer is molten iron, and upper layer is slag, and lower layer's molten iron is discharged by row's molten iron mouth 2, upper layer slag by
Slag-drip opening 1 is discharged, wherein mass percent containing C is 0.20% in the vanadium-bearing hot metal after decarburization, and mass percent containing V is
0.53%, mass fraction containing P is 0.062%, and mass fraction containing Si is 0.039%；
(5) CO and unreacted CO generated2Go to flue gas purification system 6 via fan housing 5, by CO treated gas with
O2CO is generated after mixed firinor fuel burning2, return to utilization.
Embodiment 6
Blast furnace vanadium-bearing hot metal in the embodiment of the present invention, specific ingredient are as shown in table 3.
6 blast furnace vanadium-bearing hot metal each element component content (mass fraction, %) of table
The induction furnace system structure diagram that the present embodiment uses is shown in Fig. 2.
A kind of blowing CO2Or the method that lime stone removes carbon in vanadium-bearing hot metal, comprising the following steps:
(1) clinker obtained by blast furnace ironmaking for being 1550 DEG C by temperature, the vanadium-bearing hot metal restored imported into induction
In furnace, guarantee that the temperature of vanadium-bearing hot metal is 1550 DEG C, wherein carbon containing mass percent is 5.5% in vanadium-bearing hot metal, quality containing vanadium
Score is 0.50%；
(2) adjustment agitating paddle 7 is inserted at the 1/2 of vanadium-bearing hot metal liquid level, carries out eccentric stirring to vanadium-bearing hot metal, partially
Heart degree is 0.6, mixing speed 150r/min, forms the vortex that ratio of height to diameter is 2.5；
(3) by side-blown mouth 4, limestone powder is blown into whirlpool, and continues eccentric stirring, in molar ratio, agstone
The end amount of being blown into: C element=1.5 in vanadium-bearing hot metal: 1, limestone powder blowing time is 60min, contains vanadium iron after forming decarburization
Water and slag；
(4) in induction furnace, lower layer is molten iron, and upper layer is slag, and lower layer's molten iron is discharged by row's molten iron mouth 2, upper layer slag by
Slag-drip opening 1 is discharged, wherein mass percent containing C is 0.18% in the vanadium-bearing hot metal after decarburization, and mass percent containing V is
0.50%, mass fraction containing P is 0.105%, and mass fraction containing Si is 0.149%；
(5) CO and unreacted CO generated2Go to flue gas purification system 6 via fan housing 5, by CO treated gas with
O2CO is generated after mixed firinor fuel burning2, return to utilization.
Claims (5)
1. a kind of blowing CO2Or the method that lime stone removes carbon in vanadium-bearing hot metal, which comprises the following steps:
(1) vanadium-bearing hot metal is imported into induction furnace, guarantees that the temperature of vanadium-bearing hot metal is 1450~1650 DEG C, in which:
The induction furnace includes slag-drip opening, row's molten iron mouth and blowing mouth；The blowing mouth is the one of bottom blowing mouth or side-blown mouth
Kind；The lower part of the side of the induction furnace is provided with row's molten iron mouth, and the top of the other side of induction furnace is provided with slag-drip opening,
The bottom of induction furnace is arranged in bottom blowing mouth, and the lower part of induction furnace side is arranged in side-blown mouth；
The induction furnace is provided with agitating paddle, fan housing and flue gas purification system；The agitating paddle mounting means are as follows: incuding
Furnace roof portion is eccentrically mounted；The top of induction furnace is arranged in the fan housing, and the entrance of the flue gas purification system passes through pipeline
It is connected with fan housing, the outlet of flue gas purification system is connected by pipeline with the blowing mouth of induction furnace；
The vanadium-bearing hot metal is obtained by the slag reduction that blast furnace ironmaking obtains；
(2) vanadium-bearing hot metal is stirred, forms the vortex that ratio of height to diameter is 0.5~2.5, in which: the agitating mode is to adjust
Whole agitating paddle is inserted at the 1/3~1/2 of vanadium-bearing hot metal liquid level, carries out eccentric stirring, wherein eccentric mixing speed is 50
~200r/min, the degree of eccentricity are 0.1~0.8；
(3) by CO2Or limestone powder is blown into whirlpool, during blowing, the stirring of step (2) is persistently carried out, after obtaining decarburization
Vanadium-bearing hot metal and slag, gas are collected, and gas is the CO and unreacted CO generated2；Wherein, in molar ratio, CO2Or stone
The lime stone powder amount of being blown into: C element=(1.2~1.5) in vanadium-bearing hot metal: 1, CO2Or limestone powder blowing the time be 30~
60min；
(4) CO after post treatment, generates CO2, CO2It returns in induction furnace, re-uses；Vanadium-bearing hot metal, slag are separated.
2. blowing CO according to claim 12Or the method that lime stone removes carbon in vanadium-bearing hot metal, which is characterized in that described
The step of (3) in, CO2The mode that is blown into be to be blown into from induction furnace bottom mouth or be blown into from the side-blown mouth of induction furnace.
3. blowing CO according to claim 12Or the method that lime stone removes carbon in vanadium-bearing hot metal, which is characterized in that described
The step of (3) in, carbon containing mass percent≤0.20% in the vanadium-bearing hot metal after decarburization.
4. blowing CO according to claim 12Or the method that lime stone removes carbon in vanadium-bearing hot metal, which is characterized in that described
The step of (4) in, in induction furnace, upper layer is slag, and lower layer is vanadium-bearing hot metal, by slag from induction furnace slag-drip opening be discharged, contain vanadium
Molten iron is poured out from induction fire grate molten iron mouth.
5. blowing CO according to claim 12Or the method that lime stone removes carbon in vanadium-bearing hot metal, which is characterized in that described
The step of (4) in, the CO of generation and unreacted CO2Flue gas purification system is gone to via fan housing, it will treated gas and O2It is mixed
Utilization is returned to after combination burning.
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| CN112226560B (en) * | 2020-10-14 | 2022-05-20 | 中国恩菲工程技术有限公司 | Method for reducing content of titanium nitride and/or titanium carbide in slag |
| CN112981045B (en) * | 2021-02-09 | 2022-03-22 | 东北大学 | Method for dephosphorizing and preserving vanadium of molten iron containing vanadium and phosphorus |
| CN115522114B (en) * | 2022-09-26 | 2023-09-12 | 中国科学院过程工程研究所 | Method for preparing high-cleanliness medium-high carbon steel liquid in short process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4392886A (en) * | 1980-02-29 | 1983-07-12 | Kawasaki Steel Corporation | Method of recovering CO-rich exhaust gas in refining of metal |
| CN101245404A (en) * | 2008-03-21 | 2008-08-20 | 东北大学 | Air bubble thining in process of hot metal sublimation and dispersion method |
| CN104294002A (en) * | 2014-10-23 | 2015-01-21 | 北京科技大学 | Method for smelting medium- and low-carbon ferrochromium by introducing one-step method of carbon dioxide converter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006315926A (en) * | 2005-05-16 | 2006-11-24 | Nippon Steel Corp | Method of treating converter by-produced gas |
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2016
- 2016-09-27 CN CN201610851634.7A patent/CN106167845B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4392886A (en) * | 1980-02-29 | 1983-07-12 | Kawasaki Steel Corporation | Method of recovering CO-rich exhaust gas in refining of metal |
| CN101245404A (en) * | 2008-03-21 | 2008-08-20 | 东北大学 | Air bubble thining in process of hot metal sublimation and dispersion method |
| CN104294002A (en) * | 2014-10-23 | 2015-01-21 | 北京科技大学 | Method for smelting medium- and low-carbon ferrochromium by introducing one-step method of carbon dioxide converter |
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