CN100469932C - V2O5 direct alloying steelmaking technology - Google Patents
V2O5 direct alloying steelmaking technology Download PDFInfo
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- CN100469932C CN100469932C CNB2007101000403A CN200710100040A CN100469932C CN 100469932 C CN100469932 C CN 100469932C CN B2007101000403 A CNB2007101000403 A CN B2007101000403A CN 200710100040 A CN200710100040 A CN 200710100040A CN 100469932 C CN100469932 C CN 100469932C
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Abstract
The present invention discloses process of alloying V2O5 directly to smelting V-containing steel, and features that in the later oxidizing period during smelting steel and after the oxidation sludge is eliminated, the crushed mixture of V2O5, reductant, flux and additive is loaded, so that V2O5 is reduced with the reductant, flux and additive, and the reduced V is alloyed with molten steel directly to form V-containing steel. The present invention can reach V yield over 95 %, and has the advantages of lowered V-containing steel smelting cost, low power consumption and reduced environmental pollution.
Description
Technical field
The present invention relates to oxide ore and directly carry out the alloying technical field of smelting, particularly adopt V
2O
5Directly add the process that converter carries out the vanadium-containing alloy steel smelting.
Background technology
The alloying that present smelting vanadium steel carries out v element generally all is to adopt at when filling with substance to add vanadium iron.Also have and directly in converter, add vanadium slag and (contain V
2O
515%～20%) and the mixture of reducing agent or pelletizing carry out alloying.With vanadium iron the time, need first smelting ferrovanadium alloy.Because the complex process of smelting ferrovanadium alloy mostly uses electro-silicothermic process, thermite process to come smelting ferrovanadium.
Electro silicothermic process is smelted 1 ton of vanadium iron that contains vanadium 40%, needs to consume 745kg and contains V
2O
5Be 98% industrial V
2O
5The 390Kg steel cuttings, the ferrosilicon of 370Kg siliceous 75%, 105Kg aluminium, 1225Kg lime, the 30Kg graphite electrode, 140Kg magnesia brick, 1500～1600Kwh electricity, although the recovery rate of vanadium can reach 97～98%, but need to be through first reduction period, second reduction period, the 3rd refining period three phases smelting process, the time is long, and cost is also high.
Aluminothermic process is produced 1 ton of high vanadium ferroalloy that contains vanadium 80%, needs to consume V
2O
51.88 ton, 0.77 ton of aluminum shot.When the aluminothermic process smelting ferrovanadium, because reaction is fierce, heat is concentrated, needing the control charging rate is 200kg/ (m
2Min), technology is more complicated also, and contains V in finishing slag
2O
5Reach 3～4%, and the rate of recovery of vanadium only has 80%～90%;
Also useful electro-aluminothermic process is produced vanadium iron.When electro-aluminothermic process is produced vanadium iron, need earlier furnace charge with aluminothermic process to be placed in the electric arc furnaces and smelt, reaction is put down the heated by electrodes slag after finishing, and vanadium is fully reduced, and after vanadium drops to below 1%, obtains vanadium iron after outwelling slag again.The vanadium recovery of electro-aluminothermic process can reach 97%, but compares with thermite process, and vanadium iron per ton will consume 300～350Kwh electricity more, and smelting cycle is also long.
The ferro-vanadium metallization processes has experienced smelting ferrovanadium alloy and two operations of molten steel alloying, its complex process, and tap to tap time is long, the energy consumption height, the cost height, the v element total yield is not high, has only about 85～88%.When adopting vanadium slag to carry out alloying, because V in the vanadium slag
2O
5Content is low, has therefore added a large amount of useless impurity when alloying, causes the quantity of slag big, expends a large amount of heat energy, and is unfavorable to smelting; In addition phosphorously in the vanadium slag reach 0.1%～0.2%, when smelting contained the higher steel alloy of vanadium, phosphorization was obvious under the reducing condition.Therefore up to the present only can add a small amount of vanadium slag DIRECT ALLOYING and produce the low vanadium alloy steel that contains vanadium 0.1%.The directly alloying process in vanadium slag furnace that proposes of patent of invention CN1071708A for example, the ton steel adds vanadium slag 10～20Kg, and Finished Steel contains vanadium 0.103%; And for example the vanadium pellet for steel smelting and the alloyage process thereof of patent of invention CN1215090A proposition add vanadium slag, flux, reductive agent and binding agent in its vanadium ball, are equivalent to ton steel and add a vanadium slag 11.12Kg, and Finished Steel only contains vanadium 0.039%～0.051%.So far yet there are no report and produce the technology that contains the above steel alloy of vanadium .11% with the vanadium slag DIRECT ALLOYING.
Summary of the invention
The objective of the invention is to propose a kind of with V
2O
5Directly add that converter carries out that alloying is smelted and the smelting process method that obtains vanadium steel, this process reduction rate is fast, the recovery rate height of vanadium, easy to operation, remarkable in economical benefits.
For achieving the above object, V of the present invention
2O
5The DIRECT ALLOYING process for making adopts following technical scheme, and its processing step is:
1) with (weight %) 10%～50%V
2O
5, 10%～25% reducing agent, 40%～60% flux and≤5% additive carries out mixing after the fragmentation again;
2) when finish the oxidation period that steel melting furnace is smelted, the oxidation sludge in the stove is removed totally;
3) with the V that mixes
2O
5Mixture is packed in the stove, directly carries out the alloying of molten steel and smelts;
4) when the smelting reducing phase proceeds to 5～15 minutes, add the composition of adjusting flux adjustment slag, make the composition of slag be: CaO:40%～80%, SiO
2: 15%～25%, MgO :≤10%, Al
2O
3:≤10%, aF
2: 5%～15%;
5) when the smelting reducing phase proceeds to 15～25 minutes, add slag depletion agent, to containing V
2O
5Slag reduce dilution and smelt.
In this processing step, the V that adopts
2O
5Raw material is to contain V
2O
5Reach the industrial V more than 80%
2O
5, its sulfur content≤100ppm, phosphorus content≤100ppm; Described reducing agent is one or more in ferrosilicon, the carborundum; Employed additive is that the iron content of reduced iron powder is more than 90%; Described flux and adjustment flux are by CaO, MgO, Al
2O
3, CaF
2Mix to form, wherein: CaO is that 60%～80% (weight %), MgO are 5%～10%, Al
2O
3Be 5%～10%, CaF
2Be 10%～20%; Described depletion agent is Al; At V
2O
5After packing in the stove with the mixture of reducing agent, flux, additive in the formed new slag content of FeO be no more than 5%.
The present invention adopts V
2O
5It is more than 95% that the DIRECT ALLOYING method makes the recovery rate of vanadium metal.V of the present invention
20
5The DIRECT ALLOYING method can be equivalent to a kind of single-step method technology without the complete equipment of ferroalloy smelting, thereby investment and energy resource consumption all be saved, and has reduced the vanadium alloying cost of steel, has alleviated environmental pollution.
Embodiment
V of the present invention
2O
5The DIRECT ALLOYING process for smelting steel is the latter stage heat of oxidation of smelting at converter, oxidizing slag is removed totally, with (weight %) 10%～50%V
2O
5, 10%～25% reducing agent, 40%～60% flux and≤5% additive carries out mixing after the fragmentation again; Pack in the converter, utilize reducing agent, flux, additive with V
2O
5In vanadium V restore, smelt and molten steel is carried out DIRECT ALLOYING.In reduction process, add and adjust the composition that flux is adjusted slag, in the reduction end of term, slag depletion agent is added in the stove, to containing V
2O
5Slag reduce dilution, the recovery rate of vanadium is reached more than 95%.
V
2O
5Raw material is to contain V
2O
5Reach the industrial V more than 80%
2O
5Raw material, its sulfur content≤100ppm, phosphorus content≤100ppm can not increase sulphur, phosphorization to molten steel.Reducing agent is one or more in ferrosilicon, the carborundum, and flux is by CaO, MgO, Al
2O
3, CaF
2Form, additive be iron content at the reduced iron powder 90% or more, adjustment flux is by CaO, MgO, Al
2O
3, CaF
2Mix to form, wherein, CaO is 60%～80%, MgO is 5%～10%, Al
2O
3Be 5%～10%, CaF
2Be 10%～20%, slag depletion agent is Al.
In the electric furnace smelting oxidation end of term oxidizing slag thoroughly to be removed totally to the technological requirement of smelting, with V
2O
5FeO content after packing in the stove with the mixture of reducing agent, flux, additive in the formed new slag is no more than 5%.
Reducing agent among the present invention can be with the V in the slag
2O
5Be reduced to 3%.Add again by CaO, MgO, Al
2O
3, CaF
2The flux that forms being conducive to fully carrying out of reduction reaction, and can reduce V in the slag
2O
5Content, reduction reaction produces contains the sedimentation in slag of vanadium metal particulate.According to Stokes'formula, contain the subsidence rate of vanadium metal particulate and the viscosity of slag and be inversely proportional to, less viscosity coefficient of dross helps containing vanadium metal particulate rapid subsidence, reduce be detained in the slag contain the vanadium metal particle number, improve the recovery rate of vanadium.
The mechanism of action of adding additive iron powder is among the present invention, and the V fusing point that reduction produces is solid-state up to 1700 ℃ under the steel-making temperature, and is bad with the wetability of slag, forming core difficulty in slag, and major part is combined with Si.The alloy melting point height of V and Si is solid-state under the steel-making temperature, and density is little, and the speed of sedimentation is slow in slag.After adding the additive iron powder, the crystalline structure of iron and vanadium are approximate, interfacial tension between them is little, as active points, the existence of iron granules makes the easy forming core of vanadium V, the V that reduction produces combine with iron and forms low-melting FeV that the density of FeV is big, subsidence rate is very fast in slag, has therefore improved the rate of reduction of vanadium and the recovery rate of vanadium.
The present invention adds and adjusts the composition that flux is adjusted slag in reduction process.According to the result of industrial experiment, after begin from reduction reaction 10 minutes, V in the slag
2O
5Just be reduced 80%, but follow-up reduction reaction rate is slower, at this moment adds by CaO, MgO, Al
2O
3, CaF
2The adjustment flux that mix to form is adjusted the composition of slag, be conducive to create good thermodynamic condition (basicity of slag is greater than 2) and dynamic conditions (the composition viscosity that slag is suitable is littler) thus be conducive to the carrying out of reduction reaction.
The present invention added slag depletion agent aluminium Al in the stove, to containing V in the reduction end of term
2O
5Slag carry out dilution.Because to reduction later stage, V in the slag
2O
5Content drops to 3%, and SiO in the slag
2Content is higher, because the thermodynamic condition restriction, this moment, Si can not be further with remaining V in the slag
2O
5Reduction only has to add the reducing agent Al stronger than Si and reduce V
2O
5Chamber research and industrial experiment research are found by experiment, at this moment V
2O
5Percent reduction be 90%, the amount that adds Al should be remaining V in the reducing slag
2O
5About 1.5 times of amount are comparatively suitable, and the recovery rate of last vanadium can reach more than 95%.
Embodiment 1: be to use V fully on 20 tons the electric arc furnaces at charge weight
2O
5DIRECT ALLOYING smelting high-speed tool steel M2 (W6Mo5Cr4V2), the process route of employing is: electric furnace cold charge low-phosphorous (P) steel scrap, ferrotungsten, the molybdenum-iron → melting stage → heat of oxidation, with oxidizing slag stove in thoroughly remove totally → add V when finishing the heat of oxidation
2O
5Adjusting flux with the mixture → reduction period of reducing agent, flux, additive → adding adjusts the composition of molten slag → add slag depletion agent → come out of the stove → LF stove and finely tunes composition → VD (vacuum outgas) → casting with ferroalloy.Wherein: the adding vanadium content is 98.74% oxide ore V
2O
5, its carbon containing 0.01%, phosphorous 30ppm, sulphur 20ppm; The V that adds
2O
5Oxide ore is 722.8Kg (30.6%, weight %); Reducing agent is 75% ferrosilicon 366kg (15.5%); Flux is CaO 878kg (37.2%), MgO 74kg (3.1%), Al
2O
374kg (3.1%), CaF
2146kg (6.2%); The additive that adds is the reduced iron powder 100kg (4.3%) of iron content 92%; The raw material that adds is mixed after fragmentation.V
2O
5Form new slag after packing in the stove with the mixture of reducing agent, flux, additive.After reduction reaction proceeds to 10 minutes, add adjustment flux and the composition of molten slag is adjusted to CaO:55%, SiO
2: 15%, MgO:7.5%, Al
2O
3: 7.5%, CaF
2: 15%, wherein flux CaO is 440kg (75.5%, weight %), MgO is 36kg (6.2%), Al
2O
3Be 36kg (6.2%), CaF
2For 72kg (12.3%), it is mixed rear adding.After reduction reaction proceeds to 20 minutes, add slag depletion agent Al, add-on is Al 52kg.After proceeding to 30 minutes, reduction reaction namely finishes to smelt the tapping of skimming.
Result of implementation shows, adopts the inventive method can obtain good metallurgical effect, and not only vanadium alloy element recovery rate reaches 97.2%, be higher than 86～88% of ferro-vanadium alloyage process, and fluctuation is also little, stable operation, and the finished steel quality is with suitable with the steel of ferro-vanadiumization.Assay shows, aspect macrostructure and carbide unevenness, adopt the oxide ore DIRECT ALLOYING to smelt the 80mm square billet that rapid steel technology obtained and the macrostructure of 105mm circle base, all reach the requirement of GB9943-88 center porosity, General Loosen, Pian Xi ≦ 1 grade.Evaluate by ASTMA561, it is loose, Pian Xi ≦ 3 grade, also reaches the requirement of U.S. ASTMA600 standard to macrostructure.The carbide unevenness of steel reaches the requirement of GB9943-88 fully.The carbide unevenness of intermediate blank reaches enterprise's inner quality standard fully.Because the smelting pouring technology of steel is reasonable, Carbide Nonuniformity control is good.The non-metallic inclusion rating result of finished steel shows, does not find C class silicate inclusion, the D near-spherical inclusion of steel, and category-A sulfide inclusion, category-B fragility are mingled with all ≦ 2 grade, reach the ASTMA561 standard fully.Oxygen content in steel is 55ppm, and nitrogen content is 154ppm, the clarity height of steel.Compare with using the ferro-vanadium alloyage process, the ton steel reduces cost 880 yuan, and economic benefit is considerable.
Embodiment 2: be to use V fully on 15 tons the electric arc furnaces at charge weight
2O
5DIRECT ALLOYING smelting high-speed tool steel M2Al (W6Mo5Cr4V2Al), the process route of employing is: the low-phosphorous P steel scrap of electric furnace cold charge, ferrotungsten, the molybdenum-iron → melting stage → heat of oxidation, with oxidizing slag stove in thoroughly remove totally → add V when finishing the heat of oxidation
2O
5Adjust flux with the mixture → reduction period of reducing agent, flux, additive → adding to adjust the composition of molten slag → add slag depletion agent → add aluminium ingot, come out of the stove → the LF stove finely tunes composition → VD (vacuum outgas) → casting with ferroalloy.Wherein: the adding vanadium content is 98.35% V
2O
5, its carbon containing 0.012%, phosphorous 25ppm, sulphur 25ppm.The V that adds in the stove
2O
5Oxide ore is 544.5Kg (29.7%, weight %), adds 60% silicon carbide deacidizing agent 326.8kg (17.9%), adds flux CaO 658.5kg (36%), MgO55.5kg (3%), Al
2O
355.5kg (3%), CaF
2109.5kg (6%), adding additive is the reduced iron powder 80kg (4.4%) of iron content 94%, will mix V after the raw material fragmentation that add
2O
5Form new slag after packing in the stove with the mixture of reducing agent, flux, additive.After reduction reaction proceeds to 12 minutes, add adjustment flux and the composition of molten slag is adjusted to CaO:60%, SiO
2: 20%, MgO:5%, Al
2O
3: 5%, CaF
2: 10%, wherein the CaO in the flux is 164.6kg (75%, weight), MgO is 13.9kg (6.3%), Al
2O
3Be 13.9kg (6.3%), CaF
2For 27.4kg (12.4%), it is mixed rear adding.After reduction reaction proceeds to 24 minutes, add slag depletion agent Al, addition is aluminium ingot Al 39kg; I.e. tapping after reduction reaction proceeds to 34 minutes.Present embodiment can be obtained good metallurgical effect, not only vanadium alloy element recovery rate reaches 98.9%, be higher than 86～88% of ferro-vanadium alloyage process, and operation is simple, can not exert an influence to follow-up external refining and vacuum outgas, the finished steel quality can also obtain considerable economic with suitable with the steel of ferro-vanadiumization, compare with using the ferro-vanadium alloyage process, the ton steel reduces cost 890 yuan.
Embodiment 3: be to use V fully on 10 tons the electric arc furnaces at charge weight
2O
5DIRECT ALLOYING smelting high-speed tool steel M2Al (W6Mo5Cr4V2Al), the process route of employing is: the electric furnace cold charge hangs down P steel scrap, ferrotungsten, the molybdenum-iron → melting stage → heat of oxidation, and with oxidizing slag stove in thoroughly remove totally → add V when finishing the heat of oxidation
2O
5Adjust flux residue adjustment → add slag depletion agent → add aluminium ingot with the mixture → reduction period of reducing agent, flux, additive → adding, come out of the stove → the LF stove finely tunes composition → vacuum outgas → casting with ferroalloy.Employed V
2O
5Vanadium content be 98.02%, carbon containing 0.013%, phosphorous 20ppm, sulphur 15ppm.Add V
2O
5Oxide ore is 364.2Kg (30.3%, weight %), and adding 75% reduction by ferrosilicon agent is 91.5kg (7.6%), and 60%SiC carborundum is 109kg (9.1%).The flux CaO that adds is 439kg (36.5%), MgO37kg (3.1%), Al
2O
337kg (3.1%), CaF
273kg (6.1%), adding additive is the reduced iron powder 50kg (4.2%) of iron content 95%, and the raw material that adds is mixed after fragmentation.At V
2O
5Form new slag after packing in the stove with the mixture of reducing agent, flux, additive.After reduction reaction proceeds to 11 minutes, add adjustment flux and the composition of molten slag is adjusted to CaO:65%, SiO
2: 25%, MgO:2.5%, Al
2O
3: 2.5%, CaF
2: 5%, the CaO that wherein adds is that 296kg (75%, weight %), MgO are 24.7kg (6.25%), Al
2O
3Be 24.7kg (6.25%), CaF
2For 49.3kg (12.5%), it is mixed rear adding.After reduction reaction proceeds to 22 minutes, add slag depletion agent Al, the addition of Al is 26kg; After proceeding to 32 minutes, reduction reaction namely finishes to smelt the tapping of skimming.Result of implementation shows, adopt the inventive method can obtain good metallurgical effect, not only vanadium alloy element recovery rate reaches 99.6%, be higher than 86～88% of ferro-vanadium alloyage process, and simple to operate stable, do not compare not prolongation tap to tap time with the ferro-vanadium method, can not impact subsequent technique external refining and vacuum-treat, the finished steel quality is compared with using the ferro-vanadium alloyage process with suitable with the steel of ferro-vanadiumization, and the ton steel reduces cost 910 yuan.
The present invention compared with prior art, its advantage is:
(1) compares V with domestic and international existing vanadium slag DIRECT ALLOYING technology2O
5Do not contain FeO, SiO2, the impurity such as P, V2O
5The quantity of slag of DIRECT ALLOYING technology is little. Make the reducing agent quantity of slag at 70Kg/ ton steel with SiC, and vanadium slag alloy chemical industry The skill quantity of slag then is 200～400Kg/ ton steel, so V2O
5DIRECT ALLOYING technology is more easy and simple to handle than vanadium slag alloying technology Easily go, can be to the molten steel phosphorization. Industry V2O
5Feed sulphur content is low, and 20ppm is only arranged, and can not increase sulphur to molten steel.
(2) the present invention is at V2O
5With the flux of having allocated suitable dose in the mixture of reducing agent into, created good Thermodynamic condition and dynamic conditions; The additive of allocating into can make as early as possible forming core of vanadium V, and smoothly sedimentation in slag improves The recovery rate of vanadium V; Reducing latter stage, add reducing agent Al, the CaC stronger than Si2Deng slag being carried out dilution, The recovery rate of vanadium is reached more than 97%.
(3) V of the present invention2O
5DIRECT ALLOYING method recovery rate of iron is more than 97%, and the vanadium iron alloying Recovery rate be 90%, the recovery rate of iron height. V of the present invention2O
5The DIRECT ALLOYING method can be without ferroalloy smelting Complete equipment, be equivalent to a kind of single-step method technology, thereby investment and energy resource consumption be saved all, reduced smelting Cost has alleviated environmental pollution. One ton of high-speed tool steel that contains vanadium 2% of same production aspect resource consumption, is adopted The V that consumes with DIRECT ALLOYING technology of the present invention2O
5Amount is 99.5% of traditional handicraft. Smelt combining of one ton of vanadium iron Closing power consumption is 8907.1kwh, be 836.3kwh with the comprehensive power consumption of vanadium iron metallization processes, and the present invention directly closes The power consumption of aurification technology is 526kwh, only has 63% of vanadium iron metallization processes power consumption. As produce one ton of high-speed tool Steel, the present invention forms at atmosphere acidifying, greenhouse effects, photochemical fog, this four classes carrying capacity of environment side of aquatic organism toxicity Face is respectively 63.3%, 65.2%, 61.5%, 67.4% of traditional handicraft. Aspect the utilizing of the quantity of slag, the present invention The vanadium slag amount that DIRECT ALLOYING technology is utilized is 57.8% of traditional handicraft. The waste water of DIRECT ALLOYING technology of the present invention Amount is 48.7% of the traditional handicraft wastewater flow rate.
Claims (7)
1, a kind of V
2O
5The DIRECT ALLOYING process for making is characterized in that adopting following steps:
1) by weight percentage, with 10%～50%V
2O
5, 10%～25% reducing agent, 40%～60% flux and≤5% additive carries out mixing after the fragmentation again;
2) when finish the oxidation period that steel melting furnace is smelted, the oxidation sludge in the stove is removed totally;
3) with the V that mixes
2O
5Mixture is packed in the stove, directly carries out the alloying of molten steel and smelts;
4) when the smelting reducing phase proceeds to 5～15 minutes, add the composition of adjusting flux adjustment slag, make the composition of slag be by weight percentage: CaO:40%～80%, SiO
2: 15%～25%, MgO :≤10%, Al
2O
3:≤10%, CaF
2: 5%～15%;
5) when the smelting reducing phase proceeds to 15～25 minutes, add slag depletion agent, to containing V
2O
5Slag reduce dilution and smelt.
2, V according to claim 1
2O
5The DIRECT ALLOYING process for making is characterized in that: described V
2O
5To contain V
2O
5Reach the industrial V more than 80%
2O
5, its sulfur content≤100ppm, phosphorus content≤100ppm.
3, V according to claim 1
2O
5The DIRECT ALLOYING process for making is characterized in that: described reducing agent is one or both in ferrosilicon, the carborundum.
4, V according to claim 1
2O
5The DIRECT ALLOYING process for making is characterized in that: described additive is reduced iron powder, and iron content is more than 90%.
5, V according to claim 1
2O
5The DIRECT ALLOYING process for making is characterized in that: described flux and adjustment flux are by CaO, MgO, Al
2O
3And CaF
2Mix to form, wherein by weight percentage: CaO is 60%～80%, MgO is 5%～10%, Al
2O
3Be 5%～10% and CaF
2Be 10%～20%.
6, V according to claim 1
2O
5The DIRECT ALLOYING process for making is characterized in that: described depletion agent is Al.
7, V according to claim 1 and 2
2O
5The DIRECT ALLOYING process for making is characterized in that: V
2O
5Be no more than 5% with the content of FeO in the formed new slag in the stove of packing into after reducing agent, flux and additive mix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101000403A CN100469932C (en) | 2007-06-05 | 2007-06-05 | V2O5 direct alloying steelmaking technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101000403A CN100469932C (en) | 2007-06-05 | 2007-06-05 | V2O5 direct alloying steelmaking technology |
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| Publication Number | Publication Date |
|---|---|
| CN101067182A CN101067182A (en) | 2007-11-07 |
| CN100469932C true CN100469932C (en) | 2009-03-18 |
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| CN110846468A (en) * | 2019-12-10 | 2020-02-28 | 承德建龙特殊钢有限公司 | Method for smelting vanadium-containing alloy steel by replacing vanadium alloy with vanadium pentoxide |
| CN112063803A (en) * | 2020-08-05 | 2020-12-11 | 新兴铸管股份有限公司 | Method for reducing vanadium element in slag of refining furnace |
| CN114107773B (en) * | 2021-12-02 | 2022-09-06 | 承德锦科科技股份有限公司 | 50 ferrovanadium-silicon and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1488314A1 (en) * | 1987-05-18 | 1989-06-23 | Sibirsk Metall Inst | Exothermal briquette for alloying steel with vanadium |
| CN1215090A (en) * | 1998-11-02 | 1999-04-28 | 承德钢铁集团有限公司 | Vanadium pellet for steel smelting and alloyage process thereof |
-
2007
- 2007-06-05 CN CNB2007101000403A patent/CN100469932C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1488314A1 (en) * | 1987-05-18 | 1989-06-23 | Sibirsk Metall Inst | Exothermal briquette for alloying steel with vanadium |
| CN1215090A (en) * | 1998-11-02 | 1999-04-28 | 承德钢铁集团有限公司 | Vanadium pellet for steel smelting and alloyage process thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876832A (en) * | 2012-09-21 | 2013-01-16 | 承德建龙特殊钢有限公司 | Process for performing converter alloying vanadium increase by sheeted V2O5 |
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