CN104878273A - Method for smelting ferrovanadium through iron particles and steel scraps - Google Patents
Method for smelting ferrovanadium through iron particles and steel scraps Download PDFInfo
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- CN104878273A CN104878273A CN201510377178.2A CN201510377178A CN104878273A CN 104878273 A CN104878273 A CN 104878273A CN 201510377178 A CN201510377178 A CN 201510377178A CN 104878273 A CN104878273 A CN 104878273A
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Abstract
The invention relates to a method for smelting ferrovanadium through iron particles and steel scraps, and belongs to the technical field of metallurgy. The method for smelting ferrovanadium through iron particles and steel scraps is adopted. The method includes the following steps of a, preparing a raw material and b, smelting. According to the step of preparing the raw material, vanadium oxide, aluminum particles, steel scraps and iron particles are mixed. According to the step of smelting, ignition smelting and standing are conducted, a furnace is removed after natural cooling is completed, and ferrovanadium is obtained. According to the method, the constitution of the ferrovanadium raw material is innovatively optimized, the consumption of steel scraps is reduced obviously, hence, the production cost of ferrovanadium is lowered, the production efficiency of enterprises can be improved, the production cost can be lowered, the alloy quality is improved, the enterprise competitiveness is enhanced, and a broad market prospect is achieved.
Description
Technical field
The present invention relates to the method adopting abrasive grit and steel cuttings smelting ferrovanadium, belong to metallurgical technology field.
Background technology
Ferro-vanadium is the master alloy being extensively used in steel industry, and vanadium can improve the intensity of steel, toughness, plasticity-and wear resistance as alloying element in steel.Along with the market demand of high added value steel grade constantly expands, the demand of ferro-vanadium is also being increased year by year.
Iron charge is that necessary furnace charge produced by vanadium iron, is also the important factor affecting ferro-vanadium composition and production cost.Patent 103757171 A discloses the smelting process of high vanadium ferroalloy, comprise that cold conditions is added electric arc furnace containing the rich slag of vanadium and lime is rebasing, add the first phase compound be made up of Vanadium Pentoxide in FLAKES, aluminum shot, lime, steel cuttings to smelt, with returning in electric arc furnace by the hot of a upper stove containing the rich slag of vanadium, slag tap when the content of vanadium in metallurgical slag is less than 0.5%; Add the second stage of compound be made up of vanadous oxide, aluminum shot, lime, steel cuttings to smelt, slag tap when the content of vanadium in metallurgical slag is less than 0.5%, before slagging tap, add aluminium or aluminum magnesium alloy carries out reduction treatment; Add and smelted by Vanadium Pentoxide in FLAKES and lime or the refining compound that is made up of iron scale and lime, the temperature controlling ferro-vanadium liquid in stove is more than 1900 DEG C, content of vanadium in ferro-vanadium liquid be 78 ~ 82% and aluminium content lower than 1.5% time go out ferro-vanadium liquid and containing the rich slag of vanadium, ferro-vanadium liquid being poured into preheating reaches in the ingot mould of more than 500 DEG C, obtains the high vanadium ferroalloy of content of vanadium more than 80% after cooling, the demoulding, fragmentation.The method adopts the higher steel cuttings of purity as raw material, and steel cuttings iron level is high, foreign matter content is few, and the vanadium iron composition quality produced is stablized controlled, but cold rolling steel cuttings is on the high side, and vanadium iron production cost pressure is larger.And if use that general abrasive grit cost is lower but impurity is higher, the vanadium iron quality obtained after smelting is bad.Therefore need to seek one preferably iron charge to produce vanadium iron.
In the production process of vanadium oxide, the process of vanadium slag can produce a large amount of ball milling abrasive grit, and this ball milling abrasive grit is common treatment process is by returning steel-making after processing treatment.The present inventor is found by research, the main component of ball milling abrasive grit is metallic iron, be mingled with part vanadium slag, there is certain fluctuation in the composition of ball milling abrasive grit, but its chemical composition and physical aspect meet vanadium iron smelts demand, and the price of ball milling abrasive grit is significantly less than steel cuttings, as adopted ball milling abrasive grit Substitute For Partial steel cuttings smelting ferrovanadium, to greatly reduce steel cuttings consumption, save production cost.
Summary of the invention
The technical problem that the present invention solves is to provide the method adopting abrasive grit and steel cuttings smelting ferrovanadium.
The present invention adopts the method for abrasive grit and steel cuttings smelting ferrovanadium, comprises the steps:
A, raw material prepare: barium oxide, aluminum shot, steel cuttings and abrasive grit are mixed; Wherein, in mass ratio, barium oxide: aluminum shot: steel cuttings: abrasive grit=2400 ~ 3200:1200 ~ 1400:200 ~ 250:100 ~ 150;
B, smelting: igniting smelt, leave standstill insulation, naturally cooling, tear stove shrend open after obtain ferro-vanadium.
Wherein, in a step, described barium oxide is at least one in vanadous oxide and Vanadium Pentoxide in FLAKES.
Preferably, described barium oxide is vanadous oxide and Vanadium Pentoxide in FLAKES, and in mass ratio, vanadous oxide: Vanadium Pentoxide in FLAKES=7:1, wherein, vanadous oxide is in purity 64%, and Vanadium Pentoxide in FLAKES is in purity 98%.
Wherein, described steel cuttings is cold rolling steel cuttings, and in steel cuttings, iron level is not less than 98%.
Slag inclusion rate≤4% of described abrasive grit, granularity is 3 ~ 5mm.
Described abrasive grit is in vanadium oxides producing process, and the ball milling abrasive grit produced during process vanadium slag, in abrasive grit, iron level is not less than 95%.
The present invention adopts the method for abrasive grit and steel cuttings smelting ferrovanadium, and technique is simple to operation, adopts on existing production basis, and recovery part ball milling abrasive grit replaces steel cuttings as iron charge smelting ferrovanadium.In vanadium iron batching is produced, allocate abrasive grit into by a certain percentage, reduce the steel cuttings amount of allocating into simultaneously.Produce in vanadium slag treating processes because abrasive grit belongs to early stage, therefore recycle the add-on that this part abrasive grit effectively can reduce steel cuttings, eliminate recycling abrasive grit processing charges simultaneously, can effectively reduce vanadium iron production cost.Ferro-vanadium TV, TFe of producing are stable, and other constituent contents such as C, S all meet national standard, and vanadium iron grade is stablized controlled simultaneously.
The inventive method innovation optimizes ferro-vanadium raw material composition, significantly reduce steel cuttings consumption, thus reduce vanadium iron production cost, enterprises production efficiency can be improved, reduce production cost, improve alloy mass, strengthen enterprise competitiveness, there are very wide market outlook.
Embodiment
The present invention adopts the method for abrasive grit and steel cuttings smelting ferrovanadium, comprises the steps:
A, raw material prepare: barium oxide, aluminum shot, steel cuttings and abrasive grit are mixed; Wherein, in mass ratio, barium oxide: aluminum shot: steel cuttings: abrasive grit=2400 ~ 3200:1200 ~ 1400:200 ~ 250:100 ~ 150;
B, smelting: igniting smelt, leave standstill insulation, naturally cooling, tear stove shrend open after obtain ferro-vanadium.
Wherein, smelting process can be constant according to existing conventional smelting step, successively by lighting a fire, smelting, leave standstill insulation, naturally cooling, tear stove shrend open, finally obtains ferro-vanadium.
The present invention utilizes abrasive grit to mix the iron charge smelting ferrovanadium produced as vanadium iron with steel cuttings.In blending process, part barium oxide allocates abrasive grit into, and part barium oxide allocates steel cuttings into, drops into smelting ferrovanadium in stove after mixing.This process innovation optimizes vanadium iron raw materials for production composition, reduces steel cuttings consumption, effectively can reduce production cost, improves Business Economic Benefit.
Wherein, barium oxide of the present invention: aluminum shot: steel cuttings: the proportioning of abrasive grit is the proportioning of the key affecting ferro-vanadium quality, particularly steel cuttings and abrasive grit, if steel cuttings consumption is too high, then cost is higher, if abrasive grit consumption is too high, then the impurity of product is more, and vanadium iron quality is bad.
Wherein, in a step, described barium oxide is at least one in vanadous oxide and Vanadium Pentoxide in FLAKES.
Preferably, described barium oxide is vanadous oxide and Vanadium Pentoxide in FLAKES, and in mass ratio, vanadous oxide: Vanadium Pentoxide in FLAKES=7:1, wherein, vanadous oxide is in purity 64%, and Vanadium Pentoxide in FLAKES is in purity 98%.
Wherein, described steel cuttings is cold rolling steel cuttings, and in steel cuttings, iron level is not less than 98%.
Slag inclusion rate≤4% of described abrasive grit, granularity is 3 ~ 5mm.
Described abrasive grit is in vanadium oxides producing process, and process vanadium slag is the ball milling abrasive grit produced, and in abrasive grit, iron level is not less than 95%.
The present invention adopts the method for abrasive grit and steel cuttings smelting ferrovanadium, and technique is simple to operation, adopts on existing production basis, and recovery part ball milling abrasive grit replaces steel cuttings as iron charge smelting ferrovanadium.In vanadium iron batching is produced, allocate abrasive grit into by a certain percentage, reduce the steel cuttings amount of allocating into simultaneously.Produce in vanadium slag treating processes because abrasive grit belongs to early stage, therefore recycle the add-on that this part abrasive grit effectively can reduce steel cuttings, eliminate recycling abrasive grit processing charges simultaneously, can effectively reduce vanadium iron production cost.Ferro-vanadium TV, TFe of producing are stable, and other constituent contents such as C, S all meet national standard, and vanadium iron grade is stablized controlled simultaneously.
Below in conjunction with embodiment, the specific embodiment of the present invention is further described, does not therefore limit the present invention among described scope of embodiments.Steel cuttings used in embodiment is cold rolling steel cuttings, and in steel cuttings, iron level is 98wt%; Abrasive grit used is in vanadium oxides producing process, and the ball milling abrasive grit produced during process vanadium slag, in abrasive grit, iron level is 95wt%.
Embodiment 1
The vanadous oxide 2800kg of (1) 64.0%, the Vanadium Pentoxide in FLAKES 400kg of 98%, metallurgy regular grade aluminum shot 1400kg, steel cuttings 250kg, abrasive grit 150kg, abrasive grit meets slag inclusion rate≤4%, granularity 3 ~ 5mm, adds in mixing tank and rotates mixing 8min through mixer.
(2) igniting is smelted.Leave standstill, after naturally cooling, tear stove open, obtain 2420kg complete crystallization, without slag inclusion, breakable FeV80 alloy.
(3) sample examination FeV80 alloying constituent is respectively: V=80.2%, Al=1.5%, Si=0.6%, C=0.14%, P=0.02%, S=0.03%, Mn=0.15%.Smelting vanadium recovery rate is 96.46%.
Embodiment 2
The vanadous oxide 2800kg of (1) 64.2%, the Vanadium Pentoxide in FLAKES 400kg of 98%, metallurgy regular grade aluminum shot 1400kg, steel cuttings 250kg, abrasive grit 150kg, abrasive grit meets slag inclusion rate≤4%, granularity 3 ~ 5mm, adds in mixing tank and rotates mixing 8min through mixer.
(2) igniting is smelted.Leave standstill, after naturally cooling, tear stove open, obtain 2435kg complete crystallization, without slag inclusion, breakable FeV80 alloy.
(3) sample examination FeV80 alloying constituent is respectively: V=79.8%, Al=1.3%, Si=0.7%, C=0.13%, P=0.02%, S=0.04%, Mn=0.16%.Smelting vanadium recovery rate is 96.34%.
Embodiment 3
The vanadous oxide 2100kg of (1) 64%, the Vanadium Pentoxide in FLAKES 300kg of 98%, metallurgy regular grade aluminum shot 1200kg, steel cuttings 200kg, abrasive grit 100kg, abrasive grit meets slag inclusion rate≤4%, granularity 3 ~ 5mm, adds in mixing tank and rotates mixing 8min through mixer.
(2) igniting is smelted.Leave standstill, after naturally cooling, tear stove open, obtain 1815kg complete crystallization, without slag inclusion, breakable FeV80 alloy.
(3) sample examination FeV80 alloying constituent is respectively: V=80.4%, Al=0.6%, Si=0.90%, C=0.14%, P=0.03%, S=0.03%, Mn=0.13%.Smelting vanadium recovery rate is 96.66%.
Embodiment 4
The vanadous oxide 2800kg of (1) 64%, the Vanadium Pentoxide in FLAKES 400kg of 98%, metallurgy regular grade aluminum shot 1400kg, steel cuttings 250kg, abrasive grit 150kg, abrasive grit meets slag inclusion rate≤4%, granularity 3 ~ 5mm, adds in mixing tank and rotates mixing 8min through mixer.
(2) igniting is smelted.Leave standstill, after naturally cooling, tear stove open, obtain 2440kg complete crystallization, without slag inclusion, breakable FeV80 alloy.
(3) sample examination FeV80 alloying constituent is respectively: V=79.7%, Al=1.1%, Si=0.90%, C=0.12%, P=0.03%, S=0.03%, Mn=0.14%.Smelting vanadium recovery rate is 96.61%.
Comparative example 1
The vanadous oxide 2100kg of (1) 64%, the Vanadium Pentoxide in FLAKES 300kg of 98%, metallurgy regular grade aluminum shot 1200kg, steel cuttings 300kg, abrasive grit 100kg, abrasive grit meets slag inclusion rate≤4%, granularity 3 ~ 5mm, adds in mixing tank and rotates mixing 8min through mixer.
(2) igniting is smelted.Leave standstill, after naturally cooling, tear stove open, obtain 1824kg complete crystallization, without slag inclusion, breakable FeV80 alloy.
(3) sample examination FeV80 alloying constituent is respectively: V=79.9%, Al=1.2%, Si=0.70%, C=0.08%, P=0.03%, S=0.04%, Mn=0.10%.Smelting vanadium recovery rate is 96.60%.
Steel cuttings consumption is too much, although there is no too large impact to FeV80 alloying constituent, and, because the price of steel cuttings is more expensive, will the increase of production cost be caused, the object reduced costs cannot be reached.
Comparative example 2
The vanadous oxide 2100kg of (1) 64%, the Vanadium Pentoxide in FLAKES 300kg of 98%, metallurgy regular grade aluminum shot 1200kg, steel cuttings 200kg, abrasive grit 200kg, abrasive grit meets slag inclusion rate≤4%, granularity 3 ~ 5mm, adds in mixing tank and rotates mixing 8min through mixer.
(2) igniting is smelted.Leave standstill, after naturally cooling, tear stove open, obtain 1782kg complete crystallization, without slag inclusion, breakable FeV80 alloy.
(3) sample examination FeV80 alloying constituent is respectively: V=81.5%, Al=1.6%, Si=1.0%, C=0.22%, P=0.06%, S=0.06%, Mn=0.29%.Smelting vanadium recovery rate is 96.15%.
Abrasive grit consumption is too much, and cause into stove ferro element on the low side, FeV80 alloying constituent TV is higher, brings impurity element into more simultaneously, causes impurity element C, S, Mn equal size in alloy to raise.
Claims (6)
1. adopt the method for abrasive grit and steel cuttings smelting ferrovanadium, it is characterized in that, comprise the steps:
A, raw material prepare: barium oxide, aluminum shot, steel cuttings and abrasive grit are mixed; Wherein, in mass ratio, barium oxide: aluminum shot: steel cuttings: abrasive grit=2400 ~ 3200:1200 ~ 1400:200 ~ 250:100 ~ 150;
B, smelting: igniting smelt, leave standstill insulation, naturally cooling, tear stove shrend open after obtain ferro-vanadium.
2. the method for employing abrasive grit according to claim 1 and steel cuttings smelting ferrovanadium, is characterized in that: in a step, and described barium oxide is at least one in vanadous oxide and Vanadium Pentoxide in FLAKES.
3. the method for employing abrasive grit according to claim 2 and steel cuttings smelting ferrovanadium, it is characterized in that: described barium oxide is vanadous oxide and Vanadium Pentoxide in FLAKES, and in mass ratio, vanadous oxide: Vanadium Pentoxide in FLAKES=7:1, wherein, vanadous oxide is in purity 64%, and Vanadium Pentoxide in FLAKES is in purity 98%.
4. the method for employing abrasive grit according to claim 1 and steel cuttings smelting ferrovanadium, is characterized in that: described steel cuttings is cold rolling steel cuttings, and in steel cuttings, iron level is not less than 98%.
5. the method for employing abrasive grit according to claim 1 and steel cuttings smelting ferrovanadium, is characterized in that: slag inclusion rate≤4% of described abrasive grit, and granularity is 3 ~ 5mm.
6. the method for employing abrasive grit according to claim 5 and steel cuttings smelting ferrovanadium, is characterized in that: described abrasive grit is in vanadium oxides producing process, and the ball milling abrasive grit produced during process vanadium slag, in abrasive grit, iron level is not less than 95%.
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Cited By (2)
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| CN113265577A (en) * | 2021-04-20 | 2021-08-17 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preparing FeV50 alloy from waste iron materials in vanadium extraction from vanadium slag |
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| CN103045929A (en) * | 2012-12-31 | 2013-04-17 | 攀钢集团西昌钢钒有限公司 | Method for producing ferrovanadium by aluminothermic process |
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| CN103045928A (en) * | 2012-12-31 | 2013-04-17 | 攀钢集团西昌钢钒有限公司 | Method for producing ferrovanadium by aluminothermic process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107312963A (en) * | 2017-07-17 | 2017-11-03 | 攀钢集团研究院有限公司 | A kind of molybdenum vanadium ferromanganese intermediate alloy and preparation method thereof |
| CN107312963B (en) * | 2017-07-17 | 2018-11-30 | 攀钢集团研究院有限公司 | A kind of molybdenum vanadium manganese iron intermediate alloy and preparation method thereof |
| CN113265577A (en) * | 2021-04-20 | 2021-08-17 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preparing FeV50 alloy from waste iron materials in vanadium extraction from vanadium slag |
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