CN109971908A - Converter molten iron adds the method for soda manufacture vanadium slag containing sodium - Google Patents
Converter molten iron adds the method for soda manufacture vanadium slag containing sodium Download PDFInfo
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- CN109971908A CN109971908A CN201910398884.3A CN201910398884A CN109971908A CN 109971908 A CN109971908 A CN 109971908A CN 201910398884 A CN201910398884 A CN 201910398884A CN 109971908 A CN109971908 A CN 109971908A
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- vanadium
- blowing
- vanadium slag
- molten iron
- containing sodium
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/30—Regulating or controlling the blowing
- C21C5/35—Blowing from above and through the bath
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/36—Processes yielding slags of special composition
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
-
- 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
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
-
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
-
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/04—Working-up slag
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The present invention relates to the methods that converter molten iron adds soda manufacture vanadium slag containing sodium, belong to Ferrous Metallurgy and vanadium titanium chemical field.Present invention solves the technical problem that be vanadium slag production process vanadium oxygenation efficiency is low, thermal loss is big.The present invention discloses the method that converter molten iron adds soda manufacture vanadium slag containing sodium, step is included in after molten iron is blended into converter, carry out phase blowing oxidation, coolant, soda ash are added in converting process, half steel is poured out after one phase finishing blowing, vanadium slag containing sodium is stayed in NaCl progress second phase blowing oxidation is added in converter, in converter, and blowing is aoxidized after terminating and obtained through water logging containing vanadium leachate.The present invention can reduce operation quantity of the molten iron production containing vanadium leachate, can improve the oxygenation efficiency of vanadium, reduce Process Energy consumption, and the utilization and vanadium extraction production cost for being conducive to resource reduce, and be enterprise's save the cost, create benefit.
Description
Technical field
The invention belongs to Ferrous Metallurgy and vanadium titanium chemical fields, and in particular to add soda manufacture vanadium containing sodium using converter molten iron
The method of slag.
Background technique
Vanadium (V) is a kind of transiting group metal elements, and chemical property is more stable under vanadium metal room temperature, relatively active under high temperature.Vanadium
The valence electron structure of atom is 3d34s2, be typical valence variation element, five valence electrons can participate in bonding, have+2 ,+3 ,+
4 and+5 valence states.Different partial pressure of oxygen and at a temperature of, the stable compound of vanadium is also different, and reducing partial pressure of oxygen, to improve temperature advantageous
In being stabilized for trivalent barium oxide.In addition to this, also there are many non-stoichiometric oxides for vanadium, can use general formula VnO2n-1(3
≤ n≤9) indicate oxide of the same clan.In V2O4And V2O5Between, it is known to V3O5、V3O7、V4O7、V4O9、V5O9、V6O11、V6O13
Equal oxides.Industrial barium oxide is mainly V2O3、VO2And V2O5, wherein V2O5It is particularly important.
For vanadium because it is with excellent intensity, hardness and antifatigue effect, vanadium is widely used in steel, chemical industry, aviation
Equal fields.About 84% vanadium is dissolved into formation VC and VN in steel as alloying element for steel, refines crystal grain, inhibits bayesian
The development of body and pearlite increases martensite intensity, to improve the hardness of steel, intensity, toughness and wear resistance, produces
Product changes crystal grain based on vanadium iron and VN.Vanadium is mainly using V-Al system alloy as the structural material of representative, such as non-ferrous alloy
The alloys such as excellent high temperature Aircraft Structure Materials Ti-6Al-4V, Ti-8Al-1V-Mo and Ti-6Al-6V-2Sn.It is led for chemical industry
The vanadium product in domain mainly has V2O5、NH4VO3、V2O3、VOCl3And VCl4Deng as catalyst, colorant, high capacity cell
Electrode material.It is worth mentioning that vanadium is used as anode material of lithium battery or exploitation into supercapacitor etc. due to the multivalent state of vanadium
Energy storage device has many advantages, such as that charging is rapid, specific energy is high, cheap, has much application prospect.In addition, about 2% vanadium product
It is also applied to the fields such as medicine, protective materials and thin-film material.It is existing research shows that vfanadium compound has the function of para-insulin,
It can promote the synthesis of hepatic glycogen and muscle glycogen, inhibition hepatic glycogenolytic is glucose, promotes the synthesis of fat and inhibits fat
It decomposes.To sum up, vanadium and vanadium product mainly as additive be widely used for improving material property or accelerate chemically react into
Journey.
Vanadium resource is as a kind of important scarce resource in the world, without the vanadium mineral that can individually adopt, in nature
Distribution disperses very much, and main association is in sulphur navajoite VS2Or V2S5, lead navajoite (or vanadinite) Pb5(VO4)3C, vanadium marble KV2
(AlSi2O10)(OH)2, potassium vanadate uranium ore K2(UO2)(VO4)2·3H2In the mineral such as O and vanadium titano-magnetite.Total storage of global vanadium
Amount is 63,000,000 tons, and workable reserves is 10,200,000 tons.There are many raw material type for vanadium extraction, and 88% vanadium is from vanadium in the world
It is obtained in titanomagnetite, remaining vanadium extraction raw material has bone coal, dead catalyst, petroleum lime-ash, culm etc..Because vanadium raw materials type,
Mineral characteristic and wherein content of vanadium differs greatly, technique and the method that vanadium is extracted from vanadium-containing material are also varied, mainly have
Pyrometallurgical smelting, wet-leaching and the wet method combined extraction process of pyrogenic process-.
Currently, the production of vanadium slag is mainly carried out in world wide with pyrogenic process.Pyrometallurgical smelting is usually with vanadium titano-magnetite
Primary raw material obtains vanadium-bearing hot metal by blast furnace or other ironmaking processes, then is blown into converter oxygen and makes vanadium oxygen in metal
Change is enriched in slag.It is obtained when being bessemerized using duplex containing V2O58~20% vanadium slag and half steel containing C about 3.6% use
It obtains when single converter slag-making blowing containing V2O52~5% v-bearing steel slag and molten steel.Obtained vanadium slag or v-bearing steel slag is by roasting
Burning-leaching or the mode directly leached carry out subsequent extracted.
Patent document CN102086487A discloses a kind of vanadium slag treatment method of energy-saving and emission-reduction, will separate first with molten iron
1200 DEG C or more of high-temperature liquid state vanadium slag afterwards is placed in slag ladle, and sodium compound is then added into slag ladle, with water cooling supersonic speed
Or subsonic speed oxygen rifle is supplied oxygen into slag ladle, the V generated in vanadium slag2O5The water-soluble sodium vanadate of generation is reacted with the sodium compound of addition,
Finally the obtained bits containing water-soluble sodium vanadate, processing obtains V2O5.However, using supersonic speed or subsonic speed oxygen rifle to
It being supplied oxygen in slag ladle, the volume for being limited to vanadium slag slag ladle is smaller, and liquid vanadium slag will cause using high speed oxygen supply by lance and be blown out outside tank,
The effective use of vanadium slag is influenced, while the sodium compound being added can also drift outside tank during oxygen blown, influence sodium object
Utilization rate, and the mixed effect of sodium object and vanadium slag is very poor.Moreover, vanadium slag is placed in slag ladle by this method, this process
It will cause and carry out heat exchange between hot vanadium slag and air, slag ladle, the heat utilization efficiency of hot vanadium slag is low.
Summary of the invention
Present invention solves the technical problem that be vanadium slag production process vanadium oxygenation efficiency is low, thermal loss is big.
Technical proposal that the invention solves the above-mentioned problems is to provide the method that converter molten iron adds soda manufacture vanadium slag containing sodium, step
It suddenly include: to carry out phase blowing oxidation after molten iron is blended into converter, coolant, soda ash is added in converting process, by vanadium oxidation point
From vanadium slag is formed, half steel is poured out after a phase finishing blowing, vanadium slag containing sodium stays the second stage of in NaCl progress is added in converter, in converter
Blowing oxidation, generates water-soluble sodium vanadate, and blowing oxidation is obtained through water logging containing vanadium leachate after terminating.
Wherein, Na in vanadium slag containing sodium after second phase blowing aoxidizes2O/V2O5Mass ratio is controlled 0.65~0.80.
Wherein, phase blowing aoxidizes and coolant is added in the preceding 3min after starting, and addition is pure in 2min after addition coolant
Alkali.
Wherein, the additional amount of coolant is 15~35kg/tFe, and soda ash additional amount is 5~7kg/tFe.
Wherein, for phase blowing oxidation process using top bottom with blowing, top blast carries out oxygen blast gas, bottom blowing nitrogen using oxygen rifle.
Wherein, rifle position is controlled using " high-low-high " mode when phase blowing oxidation process oxygen gun blowing, that is, is blown
0.5~1.5min early period uses high rifle position, and mid-term uses low rifle position, and 1.0~1.5min uses high rifle position before finishing blowing；Oxygen blast
Flow control is in 2.0~3.0m3/ (mintFe), 0.7~0.9MPa of oxygen pressure, oxygen blow duration are controlled in 5~6.5min.
Wherein, the control of bottom blowing nitrogen flow is in 0.1~0.5m3/(min·tFe)。
Wherein, NaCl additional amount is 1~2kg/tFe.
Wherein, second phase blowing oxidation uses bottom blowing oxygen, and bottom blowing oxygen flow is 0.25~0.75m3/ (mintFe),
Oxygen blow duration is controlled in 2~3min.
Wherein, by vanadium slag, cooling, broken, magnetic separation, ball milling, water logging are obtained containing vanadium leachate after second phase blowing oxidation.
Beneficial effects of the present invention are as follows:
The present invention is poured out using two phases blowing oxidation production Leaching of Vanadium from Vanadium slag containing sodium wherein soda ash is added in phase blowing oxidation
Second phase blowing oxidation is carried out using waste heat after half steel, sodium chloride is added in second phase blowing oxidation, compared to traditional high-temperature roasting sodium
Vanadium extraction, the present invention can reduce operation quantity of the molten iron production containing vanadium leachate, can improve the oxygenation efficiency of vanadium, reduce Process Energy
Consumption, the utilization and vanadium extraction production cost for being conducive to resource reduce, are enterprise's save the cost, create benefit.
Specific embodiment
The present invention discloses the method that converter molten iron adds soda manufacture vanadium slag containing sodium that provides, and step includes: to be blended into turn in molten iron
After furnace, phase blowing oxidation is carried out, coolant, soda ash is added in converting process, vanadium oxidation separation is formed into vanadium slag, phase blowing
After half steel is poured out, vanadium slag containing sodium is stayed in converter, and NaCl is added in converter and carries out second phase blowing oxidation, generates water-soluble
Sodium vanadate, blowing oxidation are obtained through water logging containing vanadium leachate after terminating.
The process that the present invention produces the vanadium slag containing sodium carries out the blowing oxidation of two phases, and a phase is by the vanadium oxidation separation shape in molten iron
At vanadium slag, the second phase is the barium oxide aoxidized in vanadium slag under the state existing for no molten iron, by the V in vanadium slag2O3It is oxidized to
V2O5, and promote V2O5With Na2O generates water-soluble sodium vanadate.
Specifically, soda ash is added in the process of molten iron blowing vanadium slag by the present invention, sodium object can not only be made in vanadium slag
In be uniformly distributed, be conducive to the formation of subsequent sodium vanadate, and na oxide can aoxidize the vanadium in molten iron, improve the oxidation of vanadium
Rate, moreover reduced in vanadium slag containing viscosity after sodium salt, the metallic iron in vanadium slag can be settled preferably, and in oxygen blast, oxygen will not
Vanadium slag oxidation effectiveness is caused not reach requirement because of iron oxide.So soda ash is added in phase blowing oxidation process in the present invention
Purpose be the vanadium aoxidized in molten iron, and adjustment vanadium slag fusing point and mobility, promote slag iron separation, to be subsequently generated sodium vanadate
It is ready in advance.
Wherein, Na in vanadium slag containing sodium after second phase blowing aoxidizes2O/V2O5Mass ratio is controlled 0.65~0.80.Soda ash
Na can be resolved into after addition under the high temperature conditions2O and CO2, only Na2O can be stayed in slag, therefore with Na2O is controlled.We
It is found by many experiments, by Na in vanadium slag containing sodium after second phase blowing oxidation2O/V2O5Mass ratio control 0.65~
0.80, the ratio highest of sodium vanadate is generated, most beneficial for the extraction of Vanadium in Vanadium Residue.
Wherein, phase blowing aoxidizes and coolant is added in the preceding 3min after starting, and addition is pure in 2min after addition coolant
Alkali.
Wherein, the additional amount of coolant is 15~35kg/tFe, and soda ash additional amount is 5~7kg/tFe.
The effect of coolant is to control in-furnace temperature in the reasonable scope, while can aoxidize in molten iron in the present invention
Vanadium.Preferably, the ferriferous oxides content such as coolant of the present invention optional iron scale, iron oxide red, high-grade iron ore is higher
One or more of substance mixture.
Wherein, for phase blowing oxidation process using top bottom with blowing, top blast carries out oxygen blast gas, bottom blowing nitrogen using oxygen rifle.
Wherein, rifle position is controlled using " high-low-high " mode when phase blowing oxidation process oxygen gun blowing, that is, is blown
0.5~1.5min early period uses high rifle position, and mid-term uses low rifle position, and 1.0~1.5min uses high rifle position before finishing blowing；Oxygen blast
Flow control is in 2.0~3.0m3/ (mintFe), 0.7~0.9MPa of oxygen pressure, oxygen blow duration are controlled in 5~6.5min.
" high-low-high " is one kind of present mode, and high rifle position is generally in 1.8~2.0m, and low rifle position is generally in 1.6~1.8m.
Wherein, the control of bottom blowing nitrogen flow is in 0.1~0.5m3/(min·tFe)。
Wherein, there are two the effects of NaCl, first is that the sodium content ratio in adjustment slag promotees second is that vanadium slag fusing point is reduced
Into the interaction of oxygen and slag, as far as possible by the V in vanadium slag2O3It is oxidized to V2O5.Preferably, NaCl additional amount be 1~
2kg/tFe。
Wherein, second phase blowing oxidation uses bottom blowing oxygen, and bottom blowing oxygen flow is 0.25~0.75m3/ (mintFe),
Oxygen blow duration is controlled in 2~3min.
Wherein, by vanadium slag, cooling, broken, magnetic separation, ball milling, water logging are obtained containing vanadium leachate after second phase blowing oxidation.
Specifically, covering cooling after pouring into vanadium slag in vanadium slag tank, control cooling time is in 36~72h, cooling after vanadium slag oxygen blast
After by vanadium slag, broken, magnetic separation, ball milling are at 120 mesh fine powders, after fine powder mix with water by weight 1:3, leaching process is mixed
Liquid is using mechanical stirring (300~400r/min of rotating speed of agitator) and heats 85 ± 2 DEG C of temperature of holding, and vacuum pumping is carried out after 1.5h
Filter, gained filtrate are containing vanadium leachate.
For the initial molten iron temperature of the present invention at 1190~1360 DEG C, converting process temperature is no more than 1400 DEG C.
Below with reference to specific embodiment, the present invention is described in further detail.
Embodiment 1
After vanadium-bearing hot metal is blended into converter, blowing oxidation is carried out, coolant is added in 3min before blowing starts, is added cold
But soda ash is added after agent in 2min, the additional amount of coolant is 32kg/tFe, and soda ash additional amount is 7kg/tFe.When oxygen gun blowing
Rifle position is controlled using " high-low-high " mode, i.e. Primary period 1.5min uses high rifle position 1.9m, and mid-term uses low rifle position
1.6m, 1.0 use high rifle position 2.0m before finishing blowing；Oxygen blast flow control is in 3.0m3/ (mintFe), oxygen pressure
0.9MPa, oxygen blow duration are controlled in 5min.The control of bottom blowing nitrogen flow is in 0.5m during oxygen blast3/(min·tFe).Finishing blowing
Half steel is poured out afterwards, vanadium slag containing sodium is stayed in converter, and addition NaCl1kg/tFe carries out bottom blowing oxygen blowing oxidation, bottom in converter
Oxygen blast throughput is 0.75m3/ (mintFe), oxygen blow duration are controlled in 2min.It is after blowing oxidation that vanadium slag is cooling, broken
Broken, magnetic separation, ball milling, water logging are obtained containing vanadium leachate.The oxygenation efficiency of whole process vanadium is 90.15%, and the leaching rate of vanadium is
94.67%.
Embodiment 2
After vanadium-bearing hot metal is blended into converter, blowing oxidation is carried out, coolant is added in 3min before blowing oxidation starts, is added
Soda ash is added after coolant in 2min.The additional amount of coolant is 22kg/tFe, and soda ash additional amount is 6kg/tFe.Oxygen gun blowing
When rifle position controlled using " high-low-high " mode, i.e. Primary period 1min uses high rifle position 2.0m, and mid-term uses low rifle position
1.7m, 1.5min uses high rifle position 1.9m before finishing blowing；Oxygen blast flow control is in 2.5m3/ (mintFe), oxygen pressure
0.8MPa, oxygen blow duration are controlled in 6min.Bottom blowing nitrogen flow is controlled in 0.35m3/(min·tFe).It will be partly after finishing blowing
Steel is poured out, and vanadium slag containing sodium is stayed in converter, and addition NaCl2kg/tFe carries out bottom blowing oxygen blowing oxidation, bottom blowing oxygen in converter
Flow is 0.25m3/ (mintFe), oxygen blow duration are controlled in 3min.Blowing oxidation after by vanadium slag cooling, broken, magnetic
Choosing, ball milling, water logging are obtained containing vanadium leachate.The oxygenation efficiency of whole process vanadium is 91.02%, and the leaching rate of vanadium is 95.07%.
Claims (10)
1. converter molten iron adds the method for soda manufacture vanadium slag containing sodium, it is characterised in that the following steps are included: molten iron is blended into converter
After carry out phase blowing oxidation, coolant, soda ash are added in converting process, vanadium oxidation separation is formed into vanadium slag, phase blowing knot
Half steel is poured out after beam, vanadium slag containing sodium is stayed in NaCl progress second phase blowing oxidation is added in converter, in converter, generates water solubility vanadium
Sour sodium, blowing oxidation are obtained through water logging containing vanadium leachate after terminating.
2. converter molten iron according to claim 1 adds the method for soda manufacture vanadium slag containing sodium, which is characterized in that the second phase
Na in vanadium slag containing sodium after blowing oxidation2O/V2O5Mass ratio is controlled 0.65~0.80.
3. converter molten iron according to claim 1 or 2 adds the method for soda manufacture vanadium slag containing sodium, it is characterised in that: described
Coolant is ferriferous oxide, preferably at least one of iron scale, iron oxide red, high-grade iron ore.
4. described in any item converter molten iron add the method for soda manufacture vanadium slag containing sodium according to claim 1~3, feature exists
In: the additional amount of the coolant is 15~35kg/tFe, and soda ash additional amount is 5~7kg/tFe.
5. converter molten iron according to any one of claims 1 to 4 adds the method for soda manufacture vanadium slag containing sodium, feature exists
In: phase blowing aoxidizes and coolant is added in the preceding 3min after starting, addition soda ash in 2min after addition coolant.
6. described in any item converter molten iron add the method for soda manufacture vanadium slag containing sodium according to claim 1~5, feature exists
In: for the phase blowing oxidation process using top bottom with blowing, top blast carries out oxygen blast gas, bottom blowing nitrogen using oxygen rifle.
7. converter molten iron according to claim 6 adds the method for soda manufacture vanadium slag containing sodium, it is characterised in that: oxygen gun blowing
When rifle position controlled using " high-low-high " mode, i.e. 0.5~1.5min of Primary period uses high rifle position, and mid-term uses low rifle
, 1.0~1.5min uses high rifle position before finishing blowing；Oxygen blast flow control is in 2.0~3.0m3/ (mintFe), oxygen pressure
0.7~0.9MPa of power, oxygen blow duration are controlled in 5~6.5min；Bottom blowing nitrogen flow is controlled in 0.1~0.5m3/(min·
tFe)。
8. described in any item converters add the method for soda manufacture vanadium slag containing sodium and its Oxidation Leaching according to claim 1~7,
Be characterized in that: the NaCl additional amount is 1~2kg/tFe.
9. described in any item converter molten iron add the method for soda manufacture vanadium slag containing sodium according to claim 1~8, feature exists
In: the second phase blowing oxidation uses bottom blowing oxygen, and bottom blowing oxygen flow is 0.25~0.75m3/ (mintFe), when oxygen blast
Between control in 2~3min.
10. described in any item converter molten iron add the method for soda manufacture vanadium slag containing sodium according to claim 1~9, feature exists
In: by vanadium slag, cooling, broken, magnetic separation, ball milling, water logging are obtained containing vanadium leachate after the second phase blowing oxidation.
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|---|---|---|---|
| CN201910398884.3A CN109971908A (en) | 2019-05-14 | 2019-05-14 | Converter molten iron adds the method for soda manufacture vanadium slag containing sodium |
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|---|---|---|---|
| CN201910398884.3A CN109971908A (en) | 2019-05-14 | 2019-05-14 | Converter molten iron adds the method for soda manufacture vanadium slag containing sodium |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112458298A (en) * | 2020-10-27 | 2021-03-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for extracting vanadium by direct sodium treatment of thermal vanadium slag |
| CN113718087A (en) * | 2021-08-16 | 2021-11-30 | 日照钢铁控股集团有限公司 | Production process for converter dephosphorization under high scrap steel ratio condition |
| CN115261553A (en) * | 2022-07-08 | 2022-11-01 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for producing sodium-containing vanadium slag by converter and granulating and oxidizing leaching method thereof |
| CN115821070A (en) * | 2022-12-06 | 2023-03-21 | 中国科学院过程工程研究所 | Method for extracting vanadium by oxidizing molten iron |
-
2019
- 2019-05-14 CN CN201910398884.3A patent/CN109971908A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112458298A (en) * | 2020-10-27 | 2021-03-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for extracting vanadium by direct sodium treatment of thermal vanadium slag |
| CN113718087A (en) * | 2021-08-16 | 2021-11-30 | 日照钢铁控股集团有限公司 | Production process for converter dephosphorization under high scrap steel ratio condition |
| CN115261553A (en) * | 2022-07-08 | 2022-11-01 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for producing sodium-containing vanadium slag by converter and granulating and oxidizing leaching method thereof |
| CN115821070A (en) * | 2022-12-06 | 2023-03-21 | 中国科学院过程工程研究所 | Method for extracting vanadium by oxidizing molten iron |
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Application publication date: 20190705 |