CN102127613A - Method for extracting vanadium through composite blowing of converter - Google Patents
Method for extracting vanadium through composite blowing of converter Download PDFInfo
- Publication number
- CN102127613A CN102127613A CN2011100461555A CN201110046155A CN102127613A CN 102127613 A CN102127613 A CN 102127613A CN 2011100461555 A CN2011100461555 A CN 2011100461555A CN 201110046155 A CN201110046155 A CN 201110046155A CN 102127613 A CN102127613 A CN 102127613A
- Authority
- CN
- China
- Prior art keywords
- oxygen
- vanadium
- nitrogen
- blowing
- converter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention relates to a method for extracting vanadium through composite blowing of a converter, and belongs to the technical field of vanadium extraction through converters in the metallurgy industry. Mixed gas of oxygen and nitrogen replaces pure oxygen to perform composite blowing on vanadium-containing molten iron; meanwhile, vanadium extraction is performed through bottom blowing of nitrogen or other inert gas of the converter; and by reducing the concentration of oxygen in a gas medium provided for a molten pool and ensuring the gas supply pressure required by stirring the molten pool, the temperature of the molten pool in the blowing process is raised stably and the requirement of vanadium extraction dynamics is met. By implementing the composite blowing in the vanadium extraction process, compared with a method of blowing with pure oxygen through an oxygen gun, the method has the advantages that: various economic and technical norms for vanadium extraction are improved obviously, considerable economic benefit is created, good conditions are created for the next procedure after the vanadium extraction, and the stable and smooth production of the previous and next procedures is ensured. The method is operated on the conventional converter gas supply system, investment is not needed to be increased, the ratio of both can be flexibly regulated, and the vanadium extraction requirements under different molten iron conditions are met.
Description
Technical field
The present invention relates to a kind of converter composite blowing extraction vanadium method, belong to metallurgy industry vanadium extraction by converter blowing technical field.
Background technology
The main task of vanadium extraction by converter blowing is: by to the molten bath oxygen supply, v element in the oxidation molten iron, adopt cooling Material control bath temperature simultaneously, suppress the oxidation of carbon in the molten iron, vanadium-bearing hot metal blown into high-carbon content and satisfy the half steel of next step steel-making requirements, make the vanadium oxidation in the molten iron it enter vanadium slag, obtain being suitable for the requirement that next step extracts the vanadium slag that V2O5 requires by vanadium extraction to greatest extent to satisfy, promptly the vanadium extraction process need is realized " vanadium removal guarantor carbon " to greatest extent.
The vanadium extraction process is the oxidation reaction process of elements such as iron in the molten iron, vanadium, carbon, silicon, manganese, titanium, phosphorus, sulphur, the thermodynamics and kinetics condition the when oxidizing reaction of these elements depends on the chemical ingredients of molten iron itself and blows vanadium.From the thermodynamics angle, in oxygen gesture figure, the oxidation of silicon, titanium is preferential, and the oxidation of vanadium lags behind, and carbon oxygen gesture line and vanadium oxygen gesture line have an intersection point simultaneously, and the corresponding temperature of this point is called carbon vanadium invert point.Be lower than this temperature, vanadium has precedence over oxidation of coal, is higher than this temperature, and carbon has precedence over the vanadium oxidation, has suppressed the oxidation of vanadium.Vanadium extraction is exactly a principle of utilizing above-mentioned selective oxidation, adopts oxygen that the vanadium in the molten iron is oxidized to a kind of physical-chemical reaction process that the stable barium oxide of high price is produced vanadium slag.In actual vanadium extraction process, the invert point of vanadium changes along with the variation of vanadium change in concentration in the molten iron and oxygen partial pressure, by long term studies and practice, the optimum oxidation temperature range of finding out vanadium is 1330-1360 ℃, and the reasonable span of control of terminal temperature is 1360-1420 ℃.Therefore, temperature control is the key link that realizes vanadium removal guarantor carbon, must strengthen control to process temperature and terminal temperature, guarantee that the converting process bath temperature steadily rises, in whole vanadium extraction process, temperature must be controlled at certain scope, and the optimum oxidation temperature range that prolongs v element as far as possible, with vanadium oxide element to greatest extent.From the kinetics angle analysis, the vanadium removal speed of response depends primarily in the molten iron vanadium to slag iron diffusion mass transfer speed at the interface.In the vanadium extraction by converter blowing blowing later stage, vanadium concentration reduces in the molten bath, and diffusion mass transfer speed slows down, and can not satisfy the needs of reaction, thereby has suppressed the vanadium oxidation rate.Therefore, vanadium is the restricted link of vanadium removal reaction to slag iron diffusion mass transfer at the interface.Therefore, for addressing the above problem, need the stirring intensity of reinforcement to the molten bath, promptly need the oxygen rifle supply gas pressure can not be low excessively, otherwise since oxygen rifle jet to stirring intensity of molten pool a little less than, the dynamic conditions of reaction is poor, the diffusion mass transfer speed of vanadium is slow in the molten iron, ［ V ］ and (FeO) between reaction be difficult to cause TFe content height in surplus vanadium of half steel and the vanadium slag near balance, the rate of recovery and the recovery rate of iron of vanadium are low.
At present, vanadium extraction by converter blowing all adopts purity oxygen that oxygen supply is carried out in the molten bath, oxygen concentration is generally more than 99.5%, and oxygen enters in the converter by oxygen rifle and shower nozzle and blows, and for example: Chinese patent 2008100796699, name are called " a kind of vanadium extraction smelting process for rotating furnace and device ".But following problem often appears: because the variation of molten iron condition in actual converting process, the high molten iron of Si+Ti content for example, it is too fast to utilize in the pure oxygen converting process bath temperature to rise, suppressed the oxidation of vanadium, and then caused surplus vanadium higher, the situation that vanadium recovery is low, if adopt the low discharge oxygen supply, then oxygen supply pressure is less, can not satisfy the dynamic conditions of converting process, causes the surplus vanadium of half steel higher equally.For the low molten iron of Si+Ti content, if satisfy its dynamic conditions, promptly adopt the oxygen supply mode of big pressure, simultaneously for guaranteeing the needs of its cooling conditions and terminal temperature, along with oxygen flow increases, certainly will cause a large amount of losses of carbon, cause half steel carbon low excessively, follow-up steel-making operation is brought disadvantageous effect.Therefore, utilize pure oxygen to blow, be difficult to reach the mutual coordination of vanadium extraction process kinetics and thermodynamic condition, bring certain detrimentally affect to the vanadium extraction operation.
Summary of the invention
The object of the invention provides a kind of converter composite blowing extraction vanadium method and equipment, both satisfied vanadium extraction process thermodynamic condition, satisfy the plenum system of dynamic conditions again, guarantee that the converting process bath temperature steadily rises, temperature in the vanadium extraction process is controlled in the scope that needs, and the optimum oxidation temperature range that prolongs v element as far as possible, with vanadium oxide element to greatest extent, improve vanadium recovery, obtain high-quality half steel and vanadium slag simultaneously, solve the problems referred to above that exist in the background technology.
Technical scheme of the present invention is:
A kind of converter composite blowing extraction vanadium method, utilize the mixed gas instead of pure oxygen of oxygen and nitrogen that vanadium-bearing hot metal is carried out composite blowing, cooperate converter bottom blowing nitrogen or other rare gas element to carry out vanadium extraction simultaneously, provide oxygen concentration in the gaseous media by reducing to the molten bath, guarantee that simultaneously the molten bath stirs needed supply gas pressure, to guarantee that the converting process bath temperature steadily rises, and satisfies the needs of vanadium extraction dynamic conditions simultaneously.
The inventive method comprises following concrete steps:
A. according to molten iron condition enactment oxygen gas supply flow, nitrogen gas supply flow, guarantee that simultaneously two kinds of gases mix the back pressure-controlling at 0.7-1.2MPa, oxygen and nitrogen flow ratio are controlled between the 0.3-3.0;
B. vanadium-bearing hot metal is packed in the converter, shake converter just after, the oxygen rifle is reduced to blowing position begins air feed;
C. after treating that the oxygen rifle is reduced to out oxygen point, at first open nitrogen adjustment valve, nitrogen flow is opened oxygen regulating valve after reaching set(ting)value again, to realize that composite blowing is carried out in the molten bath;
D. in the winding-up process, add the shape refrigerant that looses in the molten bath, comprise ferric oxide ball, cold-consolidated ball nodulizing, the hot-pressed iron compact sphere of powder, the shape refrigerant that looses requires evenly to add, and guarantees that temperature steadily rises in the molten bath, bigger fluctuation do not occur;
E. after treating that blowing reaches the requirement of vanadium extraction terminal point, the oxygen rifle is promoted, treat at first to close oxygen after the oxygen rifle rises to the pass oxygen point, keep nitrogen to continue winding-up 30 seconds-120 seconds after oxygen is closed simultaneously, adjust the nitrogen air supply intensity this moment, and the nitrogen air supply intensity is controlled at 1.5-4.0m3/mint;
F. winding-up is closed nitrogen adjustment valve after finishing, and finishes the winding-up operation.
In the inventive method, after treating that blowing reaches the requirement of vanadium extraction terminal point, the oxygen rifle is promoted, treat at first to close oxygen after the oxygen rifle rises to the pass oxygen point, keep nitrogen to continue winding-up 30 seconds-120 seconds after oxygen is closed simultaneously, adjust the nitrogen air supply intensity this moment, the nitrogen air supply intensity is controlled at 1.5-4.0m3/mint, also can adds carbonaceous reducing agent, improve the vanadium slag scoriform to reduce metallic iron and FeO content in the vanadium slag, reduce vanadium slag and run off, the carbonaceous reducing agent add-on can be controlled in 1-10kg/ ton iron.Said carbonaceous reducing agent comprises nut coke or breeze.
The inventive method whole winding-up process oxygen and nitrogen adjustment valve can be passed through manual regulation, also can realize automatic spraying by setup program.
Consider that from the cost angle bottom blowing medium is taked nitrogen in the vanadium extraction converting process, and requires bottom blowing gas intensity to be controlled at 0.05-0.2 m3/mint.
The inventive method can utilize the original airing system of converter to realize vanadium extraction process oxygen, nitrogen composite blowing, to reduce cost, need not increase investment, and can realize that the two ratio adjusts flexibly, has satisfied the vanadium extraction needs of different molten iron conditions.
The original airing system of converter is equipped with, and comprises oxygen channel and nitrogen pipeline two small transfer lines and crosses before the oxygen rifle body of a gun to a total pipeline, to satisfy the needs that use an oxygen rifle realization oxygen supply blowing and spatter slag.Oxygen regulating valve, oxygen cutting valve are set on oxygen channel, nitrogen adjustment valve, nitrogen trip valve are set on nitrogen pipeline.
The present invention carries out composite blowing by the mixed gas instead of pure oxygen that utilizes oxygen and nitrogen to molten iron, cooperate converter bottom blowing nitrogen or other rare gas element to carry out vanadium extraction simultaneously, provide oxygen concentration in the gaseous media by reducing to the molten bath, guarantee that simultaneously the molten bath stirs needed supply gas pressure, guaranteed that the converting process bath temperature steadily rises, satisfied the needs of happy vanadium extraction process thermodynamic condition and dynamic conditions simultaneously.Simultaneously, because the present invention is only at the enterprising line operate of former converter airing system, and then realize that oxygen, nitrogen mix by different ratios, need not increase investment, compare with the special-purpose oxygen of special production vanadium extraction (being low oxygen concentration oxygen) and not only to have saved production cost greatly, and can realize that the two ratio adjusts flexibly, satisfied the vanadium extraction needs of different molten iron conditions.
Beneficial effect of the present invention: by implementing vanadium extraction process composite blowing, use the pure oxygen blowing to compare with the oxygen rifle, the every economic and technical norms of vanadium extraction be improved significantly, created considerable economic, created good condition for next procedure after the vanadium extraction simultaneously, the stable smooth operation that procedure is produced before and after having guaranteed; Index of the present invention obtains following improvement:
A. the surplus vanadium of half steel on average reduces about 0.010%-0.020%;
B. vanadium extraction process C content reduction amplitude is compared and can be reduced 0.20%-0.40%, has guaranteed the steel making working procedure heat effectively;
C. the v slag grade 1-3% that on average can rise;
D. oxygen utilization rate improves, and oxygen depletion can reduce 1-3m3/ ton iron in the vanadium extraction process;
E. stir technology after utilizing the nitrogen residue adjustment, scoriform obviously improves, and the loss ratio is compared and can be reduced 3-8%;
Because the present invention can utilize the original airing system of converter to realize vanadium extraction process oxygen, nitrogen composite blowing, the converter airing system is not transformed and is invested, and can not influence converter steelmaking and spatter slag operation under the situation of not vanadium extraction; Therefore, the present invention is a kind of low cost, efficient, practical extraction vanadium method.
Description of drawings:
Accompanying drawing 1 is the synoptic diagram when utilizing the original airing system of converter to realize composite blowing of the present invention;
Among the figure: former oxygen steam line 1, former nitrogen steam line 2, oxygen nitrogen intersection pipeline 3, oxygen rifle 4.
Embodiment
The invention will be further described by the following examples.
A kind of converter composite blowing extraction vanadium method, utilize the mixed gas instead of pure oxygen of oxygen and nitrogen that vanadium-bearing hot metal is carried out composite blowing, cooperate converter bottom blowing nitrogen or other rare gas element to carry out vanadium extraction simultaneously, provide oxygen concentration in the gaseous media by reducing to the molten bath, guarantee that simultaneously the molten bath stirs needed supply gas pressure, to guarantee that the converting process bath temperature steadily rises, and satisfies the needs of vanadium extraction dynamic conditions simultaneously.The inventive method can realize vanadium extraction process oxygen, nitrogen composite blowing with the original airing system of converter.
Embodiments of the invention are to carry out at 100 tons of converter extracting vanadiums, and are specific as follows:
Embodiment 1:
Vanadium extraction heat 1:
Vanadium-bearing hot metal main component C:4.78%, Si+Ti:0.82%, Mn:0.18%, V:0.258%, molten iron temperature is 1265 ℃, according to above-mentioned molten iron condition, setting oxygen flow is 5550 m3/h, nitrogen flow is 18500m3/h, oxygen and nitrogen flow ratio are 0.3, and mixing the back gaseous tension is 1.2MPa.Vanadium-bearing hot metal is packed in the converter, shake converter just after, the oxygen rifle is reduced to blowing position begins air feed.After treating that the oxygen rifle is reduced to out oxygen point, at first open nitrogen adjustment valve, nitrogen flow is opened oxygen regulating valve after reaching 18500m3/h again, make oxygen, nitrogen simultaneously to air feed in the molten bath to realize composite blowing to the molten bath.In the winding-up process, in the molten bath, evenly add diffusing shape refrigerants such as ferric oxide ball, cold-consolidated ball nodulizing, the hot-pressed iron compact sphere of powder.After treating that blowing reaches the requirement of vanadium extraction terminal point, the oxygen rifle is promoted, treat at first to close oxygen after the oxygen rifle rises to the pass oxygen point, keep nitrogen to continue winding-up 120 seconds after oxygen is closed simultaneously, simultaneously the nitrogen air supply intensity is controlled at 4.0m3/mint, adds carbonaceous reducing agent 10kg/ ton iron simultaneously.Winding-up is closed nitrogen adjustment valve after finishing, and finishes the winding-up operation.The bottom blowing medium is taked nitrogen in the vanadium extraction converting process, and requires bottom blowing gas intensity to be controlled at 0.2m3/mint.The every index of half steel and vanadium slag all reaches better level after the vanadium extraction, compare the surplus vanadium of half steel with winding-up pure oxygen heat and reduce by 0.020%, vanadium extraction process C content reduction amplitude is compared and is reduced 0.20%%, v slag grade rises 3%, oxygen depletion can reduce 3m3/ ton iron in the vanadium extraction process, stirs technology after utilizing the nitrogen residue adjustment, and scoriform obviously improves, the loss ratio is compared and is reduced 8%, has obtained good effect.
Embodiment 2:
Vanadium extraction heat 2:
Vanadium-bearing hot metal main component C:4.35%, Si+Ti:0.24%, Mn:0.20%, V:0.333%, molten iron temperature is 1272 ℃, according to above-mentioned molten iron condition, setting oxygen flow is 10500 m3/h, nitrogen flow is 3500m3/h, oxygen and nitrogen flow ratio are 3.0, and mixing the back gaseous tension is 0.7MPa.Vanadium-bearing hot metal is packed in the converter, shake converter just after, the oxygen rifle is reduced to blowing position begins air feed.After treating that the oxygen rifle is reduced to out oxygen point, at first open nitrogen adjustment valve, nitrogen flow is opened oxygen regulating valve after reaching 3500m3/h again, make oxygen, nitrogen simultaneously to air feed in the molten bath to realize composite blowing to the molten bath.In the winding-up process, in the molten bath, evenly add diffusing shape refrigerants such as ferric oxide ball, cold-consolidated ball nodulizing, the hot-pressed iron compact sphere of powder.After treating that blowing reaches the requirement of vanadium extraction terminal point, the oxygen rifle is promoted, treat at first to close oxygen after the oxygen rifle rises to the pass oxygen point, keep nitrogen to continue winding-up 30 seconds after oxygen is closed simultaneously, simultaneously the nitrogen air supply intensity is controlled at 1.5m3/mint, adds carbonaceous reducing agent 1kg/ ton iron simultaneously.Winding-up is closed nitrogen adjustment valve after finishing, and finishes the winding-up operation.The bottom blowing medium is taked nitrogen in the vanadium extraction converting process, and requires bottom blowing gas intensity to be controlled at 0.05m3/mint.The every index of half steel and vanadium slag all reaches better level after the vanadium extraction, compare the surplus vanadium of half steel with winding-up pure oxygen heat and reduce by 0.010%, vanadium extraction process C content reduction amplitude is compared and is reduced 0.40%%, v slag grade rises 1%, oxygen depletion can reduce 1m3/ ton iron in the vanadium extraction process, stirs technology after utilizing the nitrogen residue adjustment, and scoriform obviously improves, the loss ratio is compared and is reduced 3%, has obtained good effect.
Embodiment 3:
Vanadium extraction heat 3:
Vanadium-bearing hot metal main component C:4.52%, Si+Ti:0.55%, Mn:0.14%, V:0.288%, molten iron temperature is 1270 ℃, according to above-mentioned molten iron condition, setting oxygen flow is 8500 m3/h, nitrogen flow is 8500m3/h, oxygen and nitrogen flow ratio are 1.0, and mixing the back gaseous tension is 0.85MPa.Vanadium-bearing hot metal is packed in the converter, shake converter just after, the oxygen rifle is reduced to blowing position begins air feed.After treating that the oxygen rifle is reduced to out oxygen point, at first open nitrogen adjustment valve, nitrogen flow is opened oxygen regulating valve after reaching 8500m3/h again, make oxygen, nitrogen simultaneously to air feed in the molten bath to realize composite blowing to the molten bath.In the winding-up process, in the molten bath, evenly add diffusing shape refrigerants such as ferric oxide ball, cold-consolidated ball nodulizing, the hot-pressed iron compact sphere of powder.After treating that blowing reaches the requirement of vanadium extraction terminal point, the oxygen rifle is promoted, treat at first to close oxygen after the oxygen rifle rises to the pass oxygen point, keep nitrogen to continue winding-up 60 seconds after oxygen is closed simultaneously, simultaneously the nitrogen air supply intensity is controlled at 2.5m3/mint, adds carbonaceous reducing agent 5kg/ ton iron simultaneously.Winding-up is closed nitrogen adjustment valve after finishing, and finishes the winding-up operation.The bottom blowing medium is taked nitrogen in the vanadium extraction converting process, and requires bottom blowing gas intensity to be controlled at 0.1m3/mint.The every index of half steel and vanadium slag all reaches better level after the vanadium extraction, compare the surplus vanadium of half steel with winding-up pure oxygen heat and reduce by 0.015%, vanadium extraction process C content reduction amplitude is compared and is reduced 0.30%%, v slag grade rises 2%, oxygen depletion can reduce 2m3/ ton iron in the vanadium extraction process, stirs technology after utilizing the nitrogen residue adjustment, and scoriform obviously improves, the loss ratio is compared and is reduced 5%, has obtained good effect.
Claims (6)
1. converter composite blowing extraction vanadium method, it is characterized in that utilizing the mixed gas instead of pure oxygen of oxygen and nitrogen that vanadium-bearing hot metal is carried out composite blowing, cooperate converter bottom blowing nitrogen or other rare gas element to carry out vanadium extraction simultaneously, provide oxygen concentration in the gaseous media by reducing to the molten bath, guarantee that simultaneously the molten bath stirs needed supply gas pressure.
2. the converter composite blowing extraction vanadium method according to claim 1 is characterized in that comprising following concrete steps:
A. according to molten iron condition enactment oxygen gas supply flow, nitrogen gas supply flow, guarantee that simultaneously two kinds of gases mix the back pressure-controlling at 0.7-1.2MPa, oxygen and nitrogen flow ratio are controlled between the 0.3-3.0;
B. vanadium-bearing hot metal is packed in the converter, shake converter just after, the oxygen rifle is reduced to blowing position begins air feed;
C. after treating that the oxygen rifle is reduced to out oxygen point, at first open nitrogen adjustment valve, nitrogen flow is opened oxygen regulating valve after reaching set(ting)value again, to realize that composite blowing is carried out in the molten bath;
D. in the winding-up process, add the shape refrigerant that looses in the molten bath, the shape refrigerant that looses requires evenly to add, and guarantees that temperature steadily rises in the molten bath, bigger fluctuation do not occur;
E. after treating that blowing reaches the requirement of vanadium extraction terminal point, the oxygen rifle is promoted, treat at first to close oxygen after the oxygen rifle rises to the pass oxygen point, keep nitrogen to continue winding-up 30 seconds-120 seconds after oxygen is closed simultaneously, adjust the nitrogen air supply intensity this moment, and the nitrogen air supply intensity is controlled at 1.5-4.0m3/mint;
F. winding-up is closed nitrogen adjustment valve after finishing, and finishes the winding-up operation.
3. the converter composite blowing extraction vanadium method according to claim 2, after it is characterized in that treating that blowing reaches the requirement of vanadium extraction terminal point, the oxygen rifle is promoted, treat at first to close oxygen after the oxygen rifle rises to the pass oxygen point, after closing, oxygen keep nitrogen to continue winding-up 30 seconds-120 seconds simultaneously, adjust the nitrogen air supply intensity this moment, the nitrogen air supply intensity is controlled at 1.5-4.0m3/mint, also can add carbonaceous reducing agent to reduce metallic iron and FeO content in the vanadium slag, improve the vanadium slag scoriform, reduce vanadium slag and run off, the carbonaceous reducing agent add-on can be controlled in 1-10kg/ ton iron.
4. according to claim 2 or 3 described converter composite blowing extraction vanadium methods, it is characterized in that said diffusing shape refrigerant comprises ferric oxide ball, cold-consolidated ball nodulizing, the hot-pressed iron compact sphere of powder etc.
5. according to claim 1 or 2 described converter composite blowing extraction vanadium methods, it is characterized in that the bottom blowing medium is taked nitrogen in the vanadium extraction converting process, and require bottom blowing gas intensity to be controlled at 0.05-0.2 m3/mint.
6. according to claim 1 or 2 described converter composite blowing extraction vanadium methods, it is characterized in that utilizing the original airing system of converter to realize vanadium extraction process oxygen, nitrogen composite blowing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100461555A CN102127613A (en) | 2011-02-25 | 2011-02-25 | Method for extracting vanadium through composite blowing of converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100461555A CN102127613A (en) | 2011-02-25 | 2011-02-25 | Method for extracting vanadium through composite blowing of converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102127613A true CN102127613A (en) | 2011-07-20 |
Family
ID=44265883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100461555A Pending CN102127613A (en) | 2011-02-25 | 2011-02-25 | Method for extracting vanadium through composite blowing of converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102127613A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102559986A (en) * | 2012-02-21 | 2012-07-11 | 四川省达州钢铁集团有限责任公司 | Method for single-stage vanadium extraction in same converter |
| CN102660659A (en) * | 2012-04-20 | 2012-09-12 | 北京科技大学 | Converter vanadium extraction process adopting top blowing oxygen lance to blow cooling agents |
| CN103397132A (en) * | 2013-07-11 | 2013-11-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for enhancing erosion resistance of vanadium extraction converter lining |
| CN103614565A (en) * | 2013-12-11 | 2014-03-05 | 凉山瑞京环保资源开发有限公司 | Steel slag tailings vanadium extracting process |
| CN103773917A (en) * | 2014-01-22 | 2014-05-07 | 河北钢铁股份有限公司承德分公司 | Smelting method for recovering vanadium and smelting steel from vanadium-containing molten iron |
| CN103966390A (en) * | 2014-05-05 | 2014-08-06 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for extracting vanadium through top-bottom combined blowing converter |
| CN104480243A (en) * | 2014-12-09 | 2015-04-01 | 河北钢铁股份有限公司承德分公司 | Method for reducing TFe in vanadium extraction slag by use of coke |
| CN104561427A (en) * | 2015-01-07 | 2015-04-29 | 攀钢集团研究院有限公司 | Method for extracting vanadium from vanadium-containing molten iron |
| CN104673957A (en) * | 2015-03-16 | 2015-06-03 | 攀钢集团研究院有限公司 | Composite treatment method for water containing vanadium chromium iron |
| CN107893142A (en) * | 2017-11-29 | 2018-04-10 | 扬州高立达科技产业有限公司 | The control method that two kinds of gases of steelmaking converter top blast accurately mix |
| CN108179245A (en) * | 2018-01-29 | 2018-06-19 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of composite air supply vanadium extraction by converter blowing method |
| CN109609719A (en) * | 2019-01-30 | 2019-04-12 | 攀钢集团攀枝花钢钒有限公司 | Binary supplies vanadium extraction by converter blowing method |
| CN109722499A (en) * | 2019-02-28 | 2019-05-07 | 攀钢集团攀枝花钢钒有限公司 | Vanadium extraction by converter blowing oxygen nitrogen is mixed to blow air supply method |
| CN109957635A (en) * | 2019-03-29 | 2019-07-02 | 承德钢铁集团有限公司 | A kind of carbon-based vanadium slag modifying agent and its method applied to efficient vanadium extraction by converter blowing |
| US10988818B2 (en) * | 2018-11-07 | 2021-04-27 | University Of Science And Technology Beijing | Efficient long-service-life blowing method and system for vanadium extraction-decarburization duplex converters |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1085605A (en) * | 1993-08-10 | 1994-04-20 | 北京科技大学 | Technology for smelting ultralow-carbon high-chromium alloyed steel by subaerated induction furnace |
| CN1180752A (en) * | 1997-08-29 | 1998-05-06 | 冶金工业部钢铁研究总院 | Nitrogen-oxygen mixed blowing iron melt pretreatment method |
| CN1664118A (en) * | 2005-03-25 | 2005-09-07 | 北京科技大学 | Converter steelmaking process by blowing CO2 gas |
-
2011
- 2011-02-25 CN CN2011100461555A patent/CN102127613A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1085605A (en) * | 1993-08-10 | 1994-04-20 | 北京科技大学 | Technology for smelting ultralow-carbon high-chromium alloyed steel by subaerated induction furnace |
| CN1180752A (en) * | 1997-08-29 | 1998-05-06 | 冶金工业部钢铁研究总院 | Nitrogen-oxygen mixed blowing iron melt pretreatment method |
| CN1664118A (en) * | 2005-03-25 | 2005-09-07 | 北京科技大学 | Converter steelmaking process by blowing CO2 gas |
Non-Patent Citations (3)
| Title |
|---|
| 《钢铁钒钛》 20010630 白瑞国 等 大供气强度底吹元件的设计及其在提钒转炉上的应用 52-54页 1-6 第22卷, 第2期 * |
| 白瑞国 等: "大供气强度底吹元件的设计及其在提钒转炉上的应用", 《钢铁钒钛》, vol. 22, no. 2, 30 June 2001 (2001-06-30), pages 52 - 54 * |
| 白瑞国 等: "顶底复合吹炼提钒试验研究", 《钢铁钒钛》, vol. 22, no. 2, 30 June 1994 (1994-06-30), pages 52 - 54 * |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102559986A (en) * | 2012-02-21 | 2012-07-11 | 四川省达州钢铁集团有限责任公司 | Method for single-stage vanadium extraction in same converter |
| CN102559986B (en) * | 2012-02-21 | 2014-07-02 | 四川省达州钢铁集团有限责任公司 | Method for single-stage vanadium extraction in same converter |
| CN102660659A (en) * | 2012-04-20 | 2012-09-12 | 北京科技大学 | Converter vanadium extraction process adopting top blowing oxygen lance to blow cooling agents |
| CN103397132A (en) * | 2013-07-11 | 2013-11-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for enhancing erosion resistance of vanadium extraction converter lining |
| CN103397132B (en) * | 2013-07-11 | 2014-12-17 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for enhancing erosion resistance of vanadium extraction converter lining |
| CN103614565A (en) * | 2013-12-11 | 2014-03-05 | 凉山瑞京环保资源开发有限公司 | Steel slag tailings vanadium extracting process |
| CN103614565B (en) * | 2013-12-11 | 2015-12-30 | 凉山瑞京环保资源开发有限公司 | Steel slag tailings process for extracting vanadium method |
| CN103773917A (en) * | 2014-01-22 | 2014-05-07 | 河北钢铁股份有限公司承德分公司 | Smelting method for recovering vanadium and smelting steel from vanadium-containing molten iron |
| CN103773917B (en) * | 2014-01-22 | 2015-11-18 | 河北钢铁股份有限公司承德分公司 | The smelting process of vanadium-bearing hot metal vanadium extraction steel-making |
| CN103966390A (en) * | 2014-05-05 | 2014-08-06 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for extracting vanadium through top-bottom combined blowing converter |
| CN103966390B (en) * | 2014-05-05 | 2015-11-18 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of method of top and bottom combined blown converter vanadium extraction |
| CN104480243A (en) * | 2014-12-09 | 2015-04-01 | 河北钢铁股份有限公司承德分公司 | Method for reducing TFe in vanadium extraction slag by use of coke |
| CN104561427A (en) * | 2015-01-07 | 2015-04-29 | 攀钢集团研究院有限公司 | Method for extracting vanadium from vanadium-containing molten iron |
| CN104673957A (en) * | 2015-03-16 | 2015-06-03 | 攀钢集团研究院有限公司 | Composite treatment method for water containing vanadium chromium iron |
| CN104673957B (en) * | 2015-03-16 | 2016-08-24 | 攀钢集团研究院有限公司 | Containing vanadium and chromium molten iron compounding method |
| CN107893142A (en) * | 2017-11-29 | 2018-04-10 | 扬州高立达科技产业有限公司 | The control method that two kinds of gases of steelmaking converter top blast accurately mix |
| CN108179245A (en) * | 2018-01-29 | 2018-06-19 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of composite air supply vanadium extraction by converter blowing method |
| US10988818B2 (en) * | 2018-11-07 | 2021-04-27 | University Of Science And Technology Beijing | Efficient long-service-life blowing method and system for vanadium extraction-decarburization duplex converters |
| CN109609719A (en) * | 2019-01-30 | 2019-04-12 | 攀钢集团攀枝花钢钒有限公司 | Binary supplies vanadium extraction by converter blowing method |
| CN109609719B (en) * | 2019-01-30 | 2020-11-17 | 攀钢集团攀枝花钢钒有限公司 | Method for extracting vanadium by binary gas supply converter |
| CN109722499A (en) * | 2019-02-28 | 2019-05-07 | 攀钢集团攀枝花钢钒有限公司 | Vanadium extraction by converter blowing oxygen nitrogen is mixed to blow air supply method |
| CN109722499B (en) * | 2019-02-28 | 2021-02-09 | 攀钢集团攀枝花钢钒有限公司 | Converter vanadium extraction oxygen nitrogen mixed blowing gas supply method |
| CN109957635A (en) * | 2019-03-29 | 2019-07-02 | 承德钢铁集团有限公司 | A kind of carbon-based vanadium slag modifying agent and its method applied to efficient vanadium extraction by converter blowing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102127613A (en) | Method for extracting vanadium through composite blowing of converter | |
| CN104928439B (en) | One kind utilizes CO2The method that dephosphorization efficiency is improved in duplex converter | |
| CN104073587A (en) | Method for converter furnace vanadium refining | |
| CN103627842B (en) | Method for enhancing end point carbon content in smelting medium-carbon steel from semisteel and semisteel steelmaking method | |
| CN103642971B (en) | Improve method and the Semi-steel making method of semi-steel making endpoint carbon content | |
| CN101608250A (en) | A kind of winding-up CO 2The method of gas control temperature of steelmaking melting pool of converter | |
| CN103773917A (en) | Smelting method for recovering vanadium and smelting steel from vanadium-containing molten iron | |
| CN104004882B (en) | A kind of half steel increases the method for silicon process and the method for semisteel converter steelmaking | |
| CN103627839B (en) | Semisteel steelmaking carbon content control method and semisteel steelmaking method | |
| CN103642966B (en) | Method for improving high-carbon high-manganese steel converter smelting endpoint carbon content and steelmaking method | |
| CN104060016B (en) | By the method for the converter smelting weathering steel of desulfurization slag, steel slag instead part steel scrap | |
| CN103627851B (en) | Semisteel steelmaking temperature control method and semisteel steelmaking method | |
| CN105463149A (en) | Process for deoxidation smelting of aluminum-bearing steel by means of silicon carbide | |
| CN104263873A (en) | Process for producing aluminum-containing medium carbon steel through CaC2 deoxidization | |
| CN110195142A (en) | The method for improving vanadium extraction by converter blowing vanadium yield | |
| CN100560740C (en) | A kind of CO that utilizes 2Gas reduces the method that fume from steel making produces | |
| CN203080002U (en) | Converter vacuum smelting device | |
| CN107502704A (en) | A kind of method for reducing alumina inclusion in semi-steel making strand | |
| CN111349797A (en) | Method for extracting vanadium from ultra-low silicon vanadium-titanium molten iron by converter | |
| CN113699301B (en) | Converter smelting method for improving energy production by adopting high-flow oxygen | |
| CN103205522A (en) | Method for smelting plain carbon steel from semi-steel | |
| CN112011668B (en) | Production process for improving desulfurization efficiency in EAF-LF molten steel refining process | |
| CN107574281A (en) | The method that Low-phosphorus Steel or extremely low phosphoretic steel are produced with slagging with Lime stone single slag process | |
| CN107245542A (en) | The method for reducing dissolved oxygen content in converter smelting endpoint molten steel | |
| CN103627840B (en) | Improve method and the Semi-steel making method of endpoint carbon content of converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110720 |