CN104561427B - Method for extracting vanadium from vanadium-containing molten iron - Google Patents
Method for extracting vanadium from vanadium-containing molten iron Download PDFInfo
- Publication number
- CN104561427B CN104561427B CN201510006728.XA CN201510006728A CN104561427B CN 104561427 B CN104561427 B CN 104561427B CN 201510006728 A CN201510006728 A CN 201510006728A CN 104561427 B CN104561427 B CN 104561427B
- Authority
- CN
- China
- Prior art keywords
- vanadium
- stirring
- iron
- molten iron
- hot metal
- 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.)
- Active
Links
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention relates to a method for extracting vanadium from vanadium-containing molten iron, and belongs to the field of iron and steel smelting. The invention aims to solve the technical problem of providing the method for extracting vanadium from the vanadium-containing molten iron. The method for extracting vanadium from the vanadium-containing molten iron comprises the following steps: a, stirring the vanadium-containing molten iron at a stirring speed of 50-150r/min, wherein the immersion depth of a stirring head is 200-800mm and the stirring time is 20-40 minutes; b, in 3 minutes from the start of the stirring in the step a, adding 15-50kg/tFe of an iron oxide into the molten iron; and c, scraping out vanadium slag after the stirring to obtain semisteel. In the method for extracting vanadium from the vanadium-containing molten iron, a mechanical stirring method is adopted in the step a to extract vanadium, and the iron oxide is added in the step b to reduce the use amount of a cooling agent, improve the oxidation rate of vanadium and reduce the oxidation rate of carbon, so that the method is beneficial for utilization of resources and production cost reduction of vanadium extraction.
Description
Technical field
The present invention relates to from vanadium-bearing hot metal vanadium extraction method, belong to field of iron and steel smelting.
Background technology
China is vanadium titano-magnetite big country, climb steel, hold steel, Kun Gangdeng enterprise is all to be smelted using vanadium titano-magnetite,
The molten iron content of vanadium that vanadium titano-magnetite blast furnace process goes out is high, and vanadium is a kind of important resource, therefore must carry before molten iron-steelmaking
Vanadium, produces vanadium slag.At present, the production method producing vanadium slag both at home and abroad is more, mainly has New Zealand's ladle to blow vanadium technique, South Africa
Shaking ladle process for extracting vanadium, Russian and Chinese vanadium extraction by converter blowing technique etc., other process for extracting vanadium also include v-bearing steel slag vanadium extraction, bone coal
Process for extracting vanadium etc..
The production process system of vanadium extraction by converter blowing is constantly changing of addition cooling agent+process temperature+duration of blast both at home and abroad
Enter.Vanadium extraction from hot metal is a selective oxidation technology.Converter supply vanadium extraction is an exothermic process, [Si], [Mn], [V], [C]
So that molten bath is rapidly heated Deng element oxide, and [Si], [Mn] oxidation occur before [V] aoxidizes, vanadium extraction can not possibly suppress it anti-
Should, and [C], [V] conversion temperature be about at 1385 DEG C about, therefore to obtain the high oxidation rate of [V] and [V] yield it is necessary to plus
Enter vanadium-raising cooling agent, control bath temperature to be allowed to approach [C], [V] conversion temperature, reach the purpose that carbon is protected in vanadium extraction, [V] is down to
Less than 0.05%.The terminal half steel temperature of vanadium extraction is unsuitable too high, and based on vanadium oxidation, the later stage is reduced to vanadium extracting process early stage with vanadium
Main, but blowing vanadium process is based on vanadium reduction.Molten iron temperature is made to drop to suitably so use addition cooling agent in cooling
Scope, passes through the control of duration of blast and process temperature in converter smelting, the vanadium oxidation in half steel improves recovery rate.
The Chinese patent application of Publication No. CN1789435A discloses a kind of vanadium extraction from hot metal control calcium cooling agent and molten iron carries
Vanadium control calcium technique, the chemical composition (Wt%) of its vanadium-raising cooling agent is：Iron scale 56～60%, fine iron breeze 30～40%,
Bonding agent 5～10%, this cooling agent can increase recovery rate and the v slag grade of vanadium, stablizes vanadium slag calcium oxide content.Publication No.
The Chinese patent application of CN101338351A discloses a kind of vanadium-raising cooling agent and preparation method thereof and using method, this cooling agent
Produced with iron scale or vanadium extraction mud, concentrate containing vanadium iron, bonding agent for raw material, containing 80%～95% ferriferous oxide, 3～
6% SiO2, 0.1～0.6% V2O5, 1～3%MgCl2.
In terms of above-mentioned prior art, vanadium extraction is carried out using mechanical mixing method+ferriferous oxide and yet there are no report.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of method of vanadium extraction from vanadium-bearing hot metal.
The method of present invention vanadium extraction from vanadium-bearing hot metal, comprises the steps：
A, vanadium-bearing hot metal being stirred, mixing speed is 50～150r/min, stirring-head immersion depth is 200～
800mm, mixing time is 20～40min；
B, in the 3min that a step stir process starts, in molten iron add iron oxide, addition be 15～
50kg/tFe；
C, stirring claw vanadium slag after terminating, and obtain final product half steel.
Further, in described a step, mixing speed preferably 120～150r/min, stirring-head immersion depth preferably 500
～800mm, mixing time preferably 30～40min.
Wherein, in described b step, ferriferous oxide can be using at least one in Iron Ore Powder, iron scale or iron oxide red.
Preferably, in 2～2.5min that in b step, the joining day of the oxide of iron starts for stir process.
Preferably, the method for present invention vanadium extraction from vanadium-bearing hot metal, comprises the steps：
A, vanadium-bearing hot metal is stirred, mixing speed is 150r/min, stirring-head immersion depth is 800mm, stirs
Mix time 30min；
B, in the 2min that a step stir process starts, in molten iron add iron oxide, addition be 50kg/
tFe；
C, stirring claw vanadium slag after terminating, and obtain final product half steel.
Beneficial effect of the present invention：
1st, in present invention method of vanadium extraction from vanadium-bearing hot metal, a step carries out vanadium extraction using mechanical mixing method, and b step adds
The oxide of iron, can reduce cooling agent consumption, improve the oxygenation efficiency of vanadium, reduce the oxygenation efficiency of carbon, be conducive to the utilization of resource
And vanadium extraction production cost reduces.
2nd, the method for vanadium-bearing hot metal vanadium extraction of the present invention, compared with vanadium extraction by converter blowing, can reduce flow of oxygen.
3rd, the method that the method for present invention vanadium extraction from vanadium-bearing hot metal adopts mechanical mixing method+ferriferous oxide, still belongs to precedent.
Specific embodiment
The method of present invention vanadium extraction from vanadium-bearing hot metal, comprises the steps：
A, vanadium-bearing hot metal being stirred, mixing speed is 50～150r/min, stirring-head immersion depth is 200～
800mm, mixing time 20～40min；
B, in the 3min that a step stir process starts, in molten iron add iron oxide, addition be 15～
50kg/tFe；
C, stirring claw vanadium slag after terminating, and obtain final product half steel；
Wherein, in b step, the joining day of the oxide of iron immerses molten iron in stirring-head and starts what stir process rose
In 3min.
Wherein, the stirring-head stirring in a step is preferably identical with the stirring-head used by KR desulfurization.Mixing speed is preferably
120～150r/min, stirring-head immersion depth is 500～800mm, mixing time 30～40min.
In b step, ferriferous oxide pulvis injection amount is 15～50kg/tFe, refers to that molten iron per ton uses the iron of 15～50kg
Oxide.Add ferriferous oxide can improve molten iron oxygen gesture in b step, the elements such as vanadium are carried out aoxidize slagging.Further, make
For preferred version, in described b step ferriferous oxide can using Iron Ore Powder, iron scale, iron oxide red medium containing ferriferous oxide
The composition of one or more.The oxide addition of iron is preferably 30～50kg/tFe.
Wherein, described in b step in the 3min that a step stir process starts, refer to stirring-head immersion molten iron and start to stir
Mix in the 3min having processed.
Further, preferably, in b step, the joining day of the oxide of iron immerses molten iron in stirring-head and opens
In 2～2.5min that beginning stir process rises.
Preferably, the method for present invention vanadium extraction from vanadium-bearing hot metal, comprises the steps：
A, vanadium-bearing hot metal is stirred, mixing speed is 150r/min, and stirring-head immersion depth is 800mm, during stirring
Between 30min；
B, in the 2min that a step stir process starts, in molten iron add iron oxide, addition be 50kg/
tFe；
C, stirring claw vanadium slag after terminating, and obtain final product half steel；
With reference to embodiment, the specific embodiment of the present invention is further described, therefore the present invention is not limited
System is among described scope of embodiments.
Embodiment 1 adopts the inventive method from vanadium-bearing hot metal vanadium extraction
After 80t ladle enters and processes station, stirring-head is immersed in molten iron, immersion depth controls in 200mm, stirring
Head mixing speed controls in 50r/min；Immerse molten iron in stirring-head and start the 3min addition iron scale that stir process rises
15kg/tFe；Mixing time controls pulls vanadium slag out after 20 min, realizes slag gold and separates.
After testing, molten iron vanadium drops to 0.04% from 0.15%, and oxidation of coal rate is 5.2%.
Embodiment 2 adopts the inventive method from vanadium-bearing hot metal vanadium extraction
200t hot-metal bottle enter process station after, by stirring-head immerse molten iron in, immersion depth control 800mm it
Between, stirring-head mixing speed controls in 150r/min；Immerse molten iron in stirring-head and start the 2min addition iron that stir process rises
Breeze and iron scale, add overall control in 50kg/tFe；Mixing time controls in 30min, and stirring claws vanadium slag after terminating,
Realize slag gold to separate.
After testing, molten iron vanadium drops to 0.03% from 0.382%, and oxidation of coal rate is 8.5%.
Embodiment 3 adopts the inventive method from vanadium-bearing hot metal vanadium extraction
140t hot-metal bottle enter process station after, by stirring-head immerse molten iron in, immersion depth control 500mm it
Between, stirring-head mixing speed controls in 120r/min；Immerse molten iron in stirring-head and start the 2.5min addition that stir process rises
Iron oxide red and Iron Ore Powder, addition controls in 30kg/tFe；Mixing time controls in 40min, and stirring claws vanadium slag after terminating, and realizes
Slag gold separates.
After testing, molten iron vanadium drops to 0.04% from 0.289%, and oxidation of coal rate is 7.3%.
Claims (4)
1. from vanadium-bearing hot metal the method for vanadium extraction it is characterised in that step is as follows：
A, vanadium-bearing hot metal being stirred, mixing speed is 120～150r/min, stirring-head immersion depth is 500～
800mm, mixing time is 30～40min；
B, in the 3min that a step stir process starts, in molten iron add iron oxide, addition be 15～50kg/
tFe；
C, stirring claw vanadium slag after terminating, and obtain final product half steel.
2. vanadium extraction from vanadium-bearing hot metal according to claim 1 method it is characterised in that：Iron oxidation in described b step
Thing can be using at least one in Iron Ore Powder, iron scale or iron oxide red.
3. vanadium extraction from vanadium-bearing hot metal according to claim 1 and 2 method it is characterised in that：The oxidation of iron in b step
In 2～2.5min that the joining day of thing starts for stir process.
4. the method for vanadium extraction from vanadium-bearing hot metal according to claim 3 is it is characterised in that comprise the steps：
A, vanadium-bearing hot metal is stirred, mixing speed is 150r/min, and stirring-head immersion depth is 800mm, during stirring
Between 30min；
B, in the 2min that a step stir process starts, in molten iron add iron oxide, addition be 50kg/tFe；
C, stirring claw vanadium slag after terminating, and obtain final product half steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510006728.XA CN104561427B (en) | 2015-01-07 | 2015-01-07 | Method for extracting vanadium from vanadium-containing molten iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510006728.XA CN104561427B (en) | 2015-01-07 | 2015-01-07 | Method for extracting vanadium from vanadium-containing molten iron |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104561427A CN104561427A (en) | 2015-04-29 |
| CN104561427B true CN104561427B (en) | 2017-02-22 |
Family
ID=53078500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510006728.XA Active CN104561427B (en) | 2015-01-07 | 2015-01-07 | Method for extracting vanadium from vanadium-containing molten iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104561427B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878222A (en) * | 2015-06-09 | 2015-09-02 | 钢铁研究总院 | Hot-metal-ladle vanadium extraction method |
| CN115232915A (en) * | 2022-07-08 | 2022-10-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for extracting vanadium from vanadium-containing molten iron |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101328523B (en) * | 2008-07-22 | 2011-03-16 | 攀钢集团攀枝花钢铁研究院有限公司 | Ladle top-bottom blowing vanadium extracting method |
| CN102127613A (en) * | 2011-02-25 | 2011-07-20 | 河北钢铁股份有限公司承德分公司 | Method for extracting vanadium through composite blowing of converter |
-
2015
- 2015-01-07 CN CN201510006728.XA patent/CN104561427B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104561427A (en) | 2015-04-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102251070B (en) | Method for implementing efficient extraction of vanadium from converter through CO2 | |
| CN102134628B (en) | Smelting method of low-carbon aluminium killed steel with low silicon content | |
| CN105039633A (en) | Method for extracting vanadium from converter | |
| CN102086487B (en) | Vanadium slag treatment method capable of saving energy and reducing emission | |
| CN105671325A (en) | Dilution treatment method for copper smelting slag | |
| CN101824503B (en) | Method for producing vanadiferous pigiron by adopting vanadiferous converter steel slag | |
| CN108048618A (en) | A kind of converter CO2The method of vanadium extraction | |
| CN104294055A (en) | Method for extracting vanadium from vanadium slag | |
| CN110055371A (en) | The method that molten iron production vanadium slag containing sodium directly leaches vanadium extraction | |
| CN103789469B (en) | Method for recovering metallic iron from molten steel slag | |
| CN103045868A (en) | Method for extracting vanadium from extracted vanadium tailings | |
| CN102212736B (en) | Method for preparing niobium microalloy steel by using low-niobium molten iron | |
| CN108179245A (en) | A kind of composite air supply vanadium extraction by converter blowing method | |
| CN104561427B (en) | Method for extracting vanadium from vanadium-containing molten iron | |
| CN105219974A (en) | A kind of raising vanadium slag V 2o 5the method of content | |
| CN106167845B (en) | A kind of blowing CO2Or the method that lime stone removes carbon in vanadium-bearing hot metal | |
| CN105385861A (en) | Oxidation and calcification treatment method for vanadium slag | |
| CN105219975A (en) | A kind for the treatment of process of vanadium slag | |
| CN104480245A (en) | Method for extracting vanadium from molten iron containing vanadium | |
| CN105039637A (en) | Magnesium-bearing cooling agent for extracting vanadium and preparation method of magnesium-bearing cooling agent | |
| CN115261552A (en) | Method for extracting vanadium from high-temperature molten iron by converter | |
| CN104673957B (en) | Containing vanadium and chromium molten iron compounding method | |
| CN104726633A (en) | Method for improving content of vanadium pentoxide in vanadium slag | |
| CN111748694A (en) | Method for enriching and recovering vanadium resource in vanadium-rich slag | |
| CN105039636A (en) | Calcium-bearing cooling agent for extracting vanadium and preparation method of calcium-bearing cooling agent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |