CN107488808B - Pneumatic vanadium iron smelting furnace - Google Patents
Pneumatic vanadium iron smelting furnace Download PDFInfo
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- CN107488808B CN107488808B CN201710611154.8A CN201710611154A CN107488808B CN 107488808 B CN107488808 B CN 107488808B CN 201710611154 A CN201710611154 A CN 201710611154A CN 107488808 B CN107488808 B CN 107488808B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C35/00—Master alloys for iron or steel
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
- C22B4/06—Alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
- C22B4/08—Apparatus
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Abstract
The invention discloses a kind of smelting furnaces, especially disclose a kind of pneumatic vanadium iron smelting furnace, belong to vanadium iron smelting process equipment Design manufacturing technology field.A kind of well-mixed pneumatic vanadium iron smelting furnace of raw materials for metallurgy that can make to smelt molten bath is provided.The pneumatic vanadium iron smelting furnace includes smelting furnace body, and the pneumatic vanadium iron smelting furnace further includes pneumatic stirring system, and the stirring gas output end of the pneumatic stirring system is provided with three groups of gas spray guns；In the gas spray gun described in three groups, one group is mounted on the furnace wall beside slag notch within the scope of 500~800mm, in addition two groups with first group under depression angle being arranged on furnace wall at 120 ° of angles respectively；Molten bath in smelting process sprays into inert gas agitation by the pneumatic stirring system under the cooperation of the gas spray gun.
Description
Technical field
The present invention relates to a kind of smelting furnaces to belong to vanadium iron smelting process dress more particularly, to a kind of pneumatic vanadium iron smelting furnace
Standby design and manufacturing technology field.
Background technique
Vanadium iron is important steel-smelting alloy additive, generallys use V2O5Electro silicothermic process smelting process is smelted, the smelting
The mature production technology of method, equipment is advanced, stable product quality, foreign countries use the vanadium recovery of electro silicothermic process for 95% with
On, the country uses V2O5The vanadium iron product quality and vanadium recovery and Foreign Advanced Lerel of electro silicothermic process technique production still have centainly
Gap.In addition to this, there are many more enterprises both at home and abroad prepares vanadium iron using electro-aluminothermic process, it is smelted compared with electro silicothermic process
Time is short, and the working of a furnace is easy to control, and labor intensity of workers is low, and stable product quality, environmental pollution is small, and overall cost is low.Usually
By V2O3Or V2O5And the materials such as abrasive grit, aluminium powder are packed into electric furnace, electrified regulation promotes reaction to carry out.It is smelted with electro-aluminothermic process high
Vanadium iron can make the rate of recovery of vanadium also can be to 95% or more, and in order to reach higher technical-economic index, each vanadium iron manufacturer makees again
Further technological improvement, for example, Luxembourg CASA factory and climb steel North Sea special type ferroalloy Co., Ltd just in electro-aluminothermic process
On the basis of, increase a set of blowing device.By the equipment make the residual vanadium in slag from 2% be reduced to 1.2% hereinafter, to
Vanadium recovery is set to be increased to 97% or more.The process flow of electro-aluminothermic process smelting ferrovanadium is as shown in Fig. 3.
In actual production in order to sufficiently restore barium oxide, excessive aluminium powder is generally all added, this will result in conjunction
Aluminium content is higher in gold；Slag melting is high, smelting temperature is higher, is unfavorable for smelting and goes on smoothly；In slag the problems such as shim.Now
In order to remove the aluminium in alloy smelting, V is generally used2O5As oxidant by alumina；Meanwhile in order to reduce the fusing point of slag and
Mobility, frequently with CaF2For slag adjusting agent.This method not only increases cost, causes content of vanadium in slag higher, and needing will be rich
Vanadium slag returns to be used in furnace, increases smelting operation difficulty, and CaF is added2Clinker can cause to corrode to furnace lining afterwards.Therefore,
A kind of cheap, easy to control, non-corrosive slag adjusting agent is needed to improve prior art.
Method disclosed in patent " the method CN102115821B of smelting ferrovanadium ": by the lime of 10wt%~35wt%,
The aluminium of 15wt%~35wt% and the V2O3 of surplus and/or V2O5 are made into mixture；Add mixture into electric furnace, while according to
It is required that the iron of predetermined amount is added；Material in energization smelting electrical furnace, to restore V2O3 and/or V2O5 by aluminium, in clinker
When full content of vanadium is lower than 0.2wt%, the clinker of 80wt%~95wt% out；It will be aoxidized again by lime 15wt%~35wt%, iron
Object 0wt%~30wt% and surplus are that the refinery of V2O5 composition is added in electric furnace according to 10~80kg/t vanadium iron, are refined,
To in vanadium iron liquid aluminium content and content of vanadium meet the vanadium iron product to be produced and aluminium content and content of vanadium wanted
When asking, aluminium alloy and refining slag out；Casting, obtains vanadium iron product.
It is characterized by comprising following steps: a, ingredient for patent " the method CN102206754A of production vanadium iron ": will contain vanadium
Raw material, iron oxide red, aluminium powder, CaO are uniformly mixed so as to obtain mixed material；Wherein, described is ammonium poly-vanadate containing vanadium raw materials, in ammonium metavanadate
It is at least one；Containing vanadium raw materials in terms of vanadium, weight proportion of the iron oxide red in terms of iron be 1: 0.16~0.26；With aluminium coefficient be 1.05~
1.15, described is the fine aluminium weight being actually added into and the fine aluminium weight ratio that theoretical calculation needs are added with aluminium coefficient；With CaO
Coefficient is 0.35~0.47, and the CaO coefficient of matching is the fine aluminium weight that the CaO weight being actually added into and theoretical calculation need to be added
The ratio between；B, pelletizing: gained mixed material pelletizing, pelletizing are dry；C, enter furnace smelting: the pelletizing after dry enters furnace and smelts to mixture
Expect fully reacting；D, it comes out of the stove, obtains vanadium iron.
It is characterized by comprising following steps: a, ingredient for patent " the method CN102206754B of production vanadium iron ": will contain vanadium
Raw material, iron oxide red, aluminium powder, CaO are uniformly mixed so as to obtain mixed material；Wherein, described is ammonium poly-vanadate containing vanadium raw materials, in ammonium metavanadate
It is at least one；Containing vanadium raw materials in terms of vanadium, weight proportion of the iron oxide red in terms of iron be 1:0.16~0.26；With aluminium coefficient be 1.05~
1.15, described is the fine aluminium weight being actually added into and the fine aluminium weight ratio that theoretical calculation needs are added with aluminium coefficient；With CaO
Coefficient is 0.35~0.47, and the CaO coefficient of matching is the fine aluminium weight that the CaO weight being actually added into and theoretical calculation need to be added
The ratio between；Wherein, the granularity containing vanadium raw materials is 0.040~0.300mm, the granularity of the iron oxide red is 0.090~
0.250mm, the granularity of the aluminium powder are 0.063~0.250mm, and the granularity of the CaO is 0.09~10.00mm；Described is more
The V2O5 content of ammonium vanadate is 80.00~91.00wt%, iron oxide red its Fe2O3 content >=97.0wt%, aluminium powder in terms of Fe2O3
Al content >=99.0wt%；The CaO is the quick lime or white lime that CaO content is 66.45~90.00wt%；B, pelletizing:
Gained mixed material pelletizing, pelletizing are dry；C, enter furnace smelting: the pelletizing after dry enters furnace and smelts to mixed material fully reacting；
D, it comes out of the stove, obtains vanadium iron.
Steps are as follows for patent " the smelting process CN 101724752B of middle vanadium iron ": A, preparing bottom material and major ingredient；B, it smelts just
Phase is firstly added bottom material and is smelted；C, after bottom material reacting balance, major ingredient is added；D, it refines.Wherein, bottom material be aluminium,
V2O5, iron, lime；Major ingredient is V2O3, aluminium, V2O5, iron, lime, fluorite.The method of the present invention not only takes full advantage of reaction heat, but also letter
Technical process is changed, has reduced the viscosity of clinker, vanadium iron smelting recovery is steadily improved up to 96% or more.
Patent " a kind of method CN103045929A of electro-aluminothermic process production vanadium iron " it is characterized in that, which comprises
A) compounding includes the metallurgical raw material of barium oxide, aluminum shot, iron filings and lime；B) reducing and smelting is carried out in smelting furnace and is being restored
It slags tap at the end of smelting；C) iron-based oxide is added into vanadium iron liquid the Al content in vanadium iron liquid to be reduced to not
Greater than 0.5%.
Patent " a kind of method CN103045929B of electro-aluminothermic process production vanadium iron " it is characterized in that, which comprises
A) compounding includes the metallurgical raw material of barium oxide, aluminum shot, iron filings and lime；B) reducing and smelting is carried out in smelting furnace and is being restored
It slags tap at the end of smelting；C) refining stage, including go out vanadium iron liquid to ladle, in vanadium iron liquid out to the mistake of ladle
Iron-based oxide is added in ladle being reduced to the Al content in vanadium iron liquid no more than 0.5% in journey；In step
B) in, the Al content in vanadium iron liquid is controlled when the V content 1.5%~6.0%, in metallurgical slag is not more than 1%
Slag.
Patent " a kind of smelting process CN103757171B of high vanadium ferroalloy " is it is characterized in that, the method includes following steps
Rapid: a, that cold conditions richness containing vanadium slag and lime is added to electric arc furnaces is rebasing, adds and is made of vanadic anhydride, aluminum shot, lime, steel cuttings
A phase mixture smelted, with will a upper furnace the hot slag of richness containing vanadium return electric arc furnaces in, the vanadium in metallurgical slag contains
It slags tap when amount is less than 0.5%, wherein the hot slag of richness containing vanadium being back in electric arc furnaces realizes the purpose of striking igniting；
B, it is added and is smelted by the second stage of mixture that vanadium trioxide, aluminum shot, lime, steel cuttings form, the content of vanadium in metallurgical slag
It slags tap when less than 0.5%, and aluminium or almag progress reduction treatment is added before slagging tap；C, be added by vanadic anhydride with
Lime or the refining mixture being made of iron scale with lime are smelted, control furnace in vanadium iron liquid temperature be 1900 DEG C with
On, and the content of vanadium in vanadium iron liquid is 78~82% and vanadium iron liquid and rich containing vanadium out when aluminium content is lower than 1.5%
Vanadium iron liquid is poured into and preheats up in 500 DEG C or more of ingot mould by slag, and cooling, demoulding obtains content of vanadium 80% after being crushed
Above high vanadium ferroalloy.
The above existing patented technology does not solve the above-mentioned technical problems in the prior art, more without proposing to use
Technological equipment in the above-mentioned technical problem of solution, suitable for new process.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of well-mixed gas of raw materials for metallurgy that can make to smelt molten bath
Dynamic vanadium iron smelting furnace.
Used technical solution is to solve above-mentioned technical problem: a kind of pneumatic vanadium iron smelting furnace, including smelting furnace sheet
Body, the pneumatic vanadium iron smelting furnace further includes pneumatic stirring system, in the stirring gas output end of the pneumatic stirring system
It is provided with three groups of gas spray guns；In the gas spray gun described in three groups, one group is mounted on beside slag notch within the scope of 500~800mm
On furnace wall, in addition two groups with first group under depression angle being arranged on furnace wall at 120 ° of angles respectively；In smelting process
Molten bath sprays into inert gas agitation by the pneumatic stirring system under the cooperation of the gas spray gun.
The beneficial effects of the present invention are: the application on the basis of existing smelting furnace body by increasing pneumatic stirring system
System, and the stirring gas output end of the pneumatic stirring system be arranged three groups of gas spray guns, then make this three groups described in gas spray gun
In one group be mounted on the furnace wall beside slag notch within the scope of 500~800mm, in addition two groups with first group under depression angle
Being arranged on furnace wall at 120 ° of angles respectively.When in use, the molten bath in smelting process is made to pass through the pneumatic stirring system
System sprays into inert gas agitation under the cooperation of the gas spray gun.In this way, due to can be in the raw materials for metallurgy smelted in molten bath
Effective agitation is realized by the inertia stirring gas that the pneumatic stirring system inputs, and reaches the raw materials for metallurgy for making to smelt molten bath
Well-mixed purpose.And then can also make to smelt reaction more sufficiently, quickly, reach raising efficiency, improves and smelt vanadium
The purpose of iron yield.
Further, the angle of the furnace wall of the longitudinal center line and corresponding position of gas spray gun described in each group 75~
Between 90 °.
Further, the longitudinal center line of gas spray gun described in each group and the angle of vertical direction are between 30~60 °.
Further, distance of the ejiction opening of gas spray gun described in each group away from liquid level is between 100~600mm.
The preferred mode of the above solution is that the diameter of the ejiction opening of gas spray gun described in each group is between 5~20mm.
Further, the pneumatic stirring system further includes inert gas transfer pipeline, gas spray gun described in each group
It is connect respectively with the output end of the inert gas transfer pipeline, input terminal and the outside of the inert gas transfer pipeline
Indifferent gas storage load connects.
Further, the parameter of the inert gas conveyed in the inert gas transfer pipeline be pressure 0.3~
1.2MPa；300~1200Nm of flow3/h。
Detailed description of the invention
Fig. 1 is the schematic front view of vanadium iron smelting furnace of the present invention；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the process flow chart for the electro-aluminothermic process smelting ferrovanadium being related in background of invention.
In the figure, it is marked as smelting furnace body 1, pneumatic stirring system 2, gas spray gun 3, slag notch 4, inert gas transfer pipeline
5。
Specific embodiment
It is a kind of well-mixed pneumatic vanadium of raw materials for metallurgy that can make to smelt molten bath provided by the invention as shown in Figure 1 and Figure 2
Iron smelting furnace.A kind of pneumatic vanadium iron smelting furnace, including furnace body 1 is smelted, the pneumatic vanadium iron smelting furnace further includes pneumatically stirring
System 2 is mixed, the stirring gas output end of the pneumatic stirring system 2 is provided with three groups of gas spray guns 3；The gas blowout described in three groups
In rifle 3, on one group of furnace wall being mounted within the scope of 500~800mm of the side of slag notch 4, in addition two groups with first group in depression angle
Being arranged on furnace wall at 120 ° of angles respectively under degree；Molten bath in smelting process is by the pneumatic stirring system 2 in institute
It states and sprays into inert gas agitation under the cooperation of gas spray gun 3.The application is pneumatic by increasing on the basis of existing smelting furnace body 1
Stirring system 2, and three groups of gas spray guns 3 are set in the stirring gas output end of the pneumatic stirring system 2, then make three groups of institutes
State on the furnace wall that one in gas spray gun 3 group is mounted within the scope of 500~800mm of the side of slag notch 4, in addition two groups with first group
Being arranged on furnace wall at 120 ° of angles respectively under depression angle.When in use, pass through the molten bath in smelting process described
Pneumatic stirring system 2 sprays into inert gas agitation under the cooperation of the gas spray gun 3.In this way, due in smelting molten bath
The inertia stirring gas that raw materials for metallurgy can be inputted by the pneumatic stirring system 2 realizes effective agitation, and reaching makes to smelt
The well-mixed purpose of the raw materials for metallurgy in molten bath.And then can also make to smelt reaction more sufficiently, quickly, reach raising and smelts effect
Rate improves the purpose of smelting ferrovanadium yield.
In above embodiment, in order to not only guarantee that raw materials for metallurgy in molten bath is sufficiently stirred in stirring gas, but also guarantee
Be not in the unsafe condition of slag splash in whipping process, the application to the gas spray gun 3 smelting furnace body 1 on install
Following concrete regulations is done, i.e., the angle of the furnace wall of the longitudinal center line and corresponding position of gas spray gun 3 described in each group is 75
Between~90 °；The angle of the longitudinal center line of gas spray gun 3 and vertical direction described in each group is between 30~60 °；Gas described in each group
Distance of the ejiction opening of spray gun 3 away from liquid level is between 100~600mm；The diameter of the ejiction opening of gas spray gun 3 described in each group 5~
Between 20mm.Wherein the longitudinal center line of gas spray gun 3 and the angle of the furnace wall of corresponding position are arranged between 75~90 °,
Without being arranged so as to keep molten bath mixed in the rotation of spiral vortex type along furnace wall under stirring gas effect by the way of vertical furnace wall
It closes, then is combined with the longitudinal center line of gas spray gun 3 with vertical direction in the structure of angle between 30~60 °, guarantee slag not
It will appear splash.And distance of the ejiction opening of gas spray gun 3 away from liquid level is between 100~600mm and the ejiction opening of gas spray gun 3
Diameter between 5~20mm, both can further guarantee outside slag not splash, gas spray gun 3 can also be protected from height
Safety under warm environment.
Also needed in conjunction with the pneumatic stirring system 2 include inert gas transfer pipeline 5 design feature, each group institute
The gas spray gun 3 stated is connect with the output end of the inert gas transfer pipeline 5 respectively, the inert gas transfer pipeline 5
Input terminal connects with external indifferent gas storage load；It equally, in order to guarantee the abundant of stirring, but is not in slag splash
Situation, while the parameter request of existing universal industrial compressed gas is fitted again, it is conveyed in the inert gas transfer pipeline 6 lazy
Property gas parameter be 0.3~1.2MPa of pressure；300~1200Nm of flow3/h。
Claims (3)
1. a kind of pneumatic vanadium iron smelting furnace, including smelt furnace body (1), it is characterised in that: the pneumatic vanadium iron smelting furnace is also
Including pneumatic stirring system (2), the stirring gas output end of the pneumatic stirring system (2) is provided with three groups of gas spray guns (3)；
In the gas spray gun (3) described in three groups, one group is mounted on the furnace wall beside slag notch (4) within the scope of 500~800mm, in addition
Two groups with first group under depression angle being arranged on furnace wall at 120 ° of angles respectively；Molten bath in smelting process passes through described
Pneumatic stirring system (2) sprayed under the cooperation of the gas spray gun (3) inert gas agitation,
The pneumatic stirring system (2) further includes inert gas transfer pipeline (5), gas spray gun (3) described in each group respectively with
The output end of the inert gas transfer pipeline (5) connects, input terminal and the outside of the inert gas transfer pipeline (5)
Indifferent gas storage load connects,
The parameter of the inert gas conveyed in the inert gas transfer pipeline (5) is 0.3~1.2MPa of pressure；Flow 300~
1200Nm3/ h,
The angle of the furnace wall of the longitudinal center line and corresponding position of gas spray gun described in each group (3) between 75~90 °,
The longitudinal center line of gas spray gun described in each group (3) and the angle of vertical direction are between 30~60 °.
2. pneumatic vanadium iron smelting furnace according to claim 1, it is characterised in that: the ejiction opening of gas spray gun described in each group (3)
Distance away from liquid level is between 100~600mm.
3. pneumatic vanadium iron smelting furnace described according to claim 1~any one of 2, it is characterised in that: gas spray gun described in each group
(3) diameter of ejiction opening is between 5~20mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710611154.8A CN107488808B (en) | 2017-07-25 | 2017-07-25 | Pneumatic vanadium iron smelting furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710611154.8A CN107488808B (en) | 2017-07-25 | 2017-07-25 | Pneumatic vanadium iron smelting furnace |
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| CN107488808B true CN107488808B (en) | 2019-11-12 |
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| CN111154610A (en) * | 2020-03-02 | 2020-05-15 | 庄臣酿酒（福建）有限公司 | Distillation device and distillation method for brandy |
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|---|---|---|---|---|
| US5685244A (en) * | 1995-06-28 | 1997-11-11 | Textron Systems Corporation | Gas-fired smelting apparatus and process |
| CN1278010A (en) * | 1999-06-04 | 2000-12-27 | 技术资源有限公司 | Direct smelting method and equipment |
| CN101189349A (en) * | 2005-05-13 | 2008-05-28 | 技术资源有限公司 | Cold start-up method for a direct smelting process |
| CN204630364U (en) * | 2015-05-11 | 2015-09-09 | 中国恩菲工程技术有限公司 | Bath smelting furnace |
| CN104928497A (en) * | 2015-06-30 | 2015-09-23 | 中国恩菲工程技术有限公司 | Method of adopting oxygen-enriched vortex bath smelting furnace to treat zinc-leaching residue |
| CN106544526A (en) * | 2017-01-03 | 2017-03-29 | 昆明理工大学 | A kind of side-blown jet gush-type of bath smelting strengthens stirring means |
-
2017
- 2017-07-25 CN CN201710611154.8A patent/CN107488808B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5685244A (en) * | 1995-06-28 | 1997-11-11 | Textron Systems Corporation | Gas-fired smelting apparatus and process |
| CN1278010A (en) * | 1999-06-04 | 2000-12-27 | 技术资源有限公司 | Direct smelting method and equipment |
| CN101189349A (en) * | 2005-05-13 | 2008-05-28 | 技术资源有限公司 | Cold start-up method for a direct smelting process |
| CN204630364U (en) * | 2015-05-11 | 2015-09-09 | 中国恩菲工程技术有限公司 | Bath smelting furnace |
| CN104928497A (en) * | 2015-06-30 | 2015-09-23 | 中国恩菲工程技术有限公司 | Method of adopting oxygen-enriched vortex bath smelting furnace to treat zinc-leaching residue |
| CN106544526A (en) * | 2017-01-03 | 2017-03-29 | 昆明理工大学 | A kind of side-blown jet gush-type of bath smelting strengthens stirring means |
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