CN1743488A - Method for preparing ferro-titantium, steel and ferrovanadium from vanadium-titantium iron headings - Google Patents
Method for preparing ferro-titantium, steel and ferrovanadium from vanadium-titantium iron headings Download PDFInfo
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Abstract
This invention provides a method for manufacturing FeTi, steel and FeV with FeVTi mineral concentrate including the following steps: 1, adding alkali metal to recover FeTiV mineral concentrate, 2, smelting and separating recovered Fe, 3, dephosphorizing of iron melt containing V, 4, entering into the steel converter to blow V melting and casting, 5, melting iron melt containing V with steel slag to air-refine V-rich slag with oxygen, 6, melting FeV with the V-rich slag, 7, smelting FeTi by melting slag. The advantages are: 1, avoiding the shortcoming of not recovering Ti in the converter and single-slag return flow and avoiding the shortcoming of low recovery rate of Fe in the Fe first and V second flow, 2, turning slag into the raw material of cement by adjusting composition of the smelted solvent, 3, avoiding complicated V-extraction composition of the technology by immersion.
Description
Technical field
The present invention relates to field of metallurgy, particularly relate to a kind of method of producing ferrotianium, steel and vanadium iron with sefstromite concentrate.
Background technology
The utilization of sefstromite concentrate, the method that adopts mainly contains at present:
1, blast furnace-bof process.Ordinary blast is used in this technical process, smelts the molten iron that contains 0.4%V under big air quantity, high humidity, acid slag condition, re-uses top blown converter the V in the molten iron is oxidized to V
2O
5Content is 14% vanadium slag, another converter steelmaking of gained half steel water, and vanadium slag adopts the water law vanadium extraction, produces the V of content＞99%
2O
5, again with electric furnace with V
2O
5Smelt into vanadium iron.
2, flowing molten iron journey behind the first vanadium.Rotary kiln is adopted in this technical process, and the sefstromite concentrate of making behind the ball is carried out sodium roasting, makes the V of iron ore concentrate
2O
5Generate water-soluble vanadic acid sodium with sodium agent reaction, again to the water logging of sodium pelletizing, obtain containing the vanadium aqueous solution and soak the back pelletizing, water-soluble vanadic acid sodium generates the ammonium poly-vanadate precipitation with the ammonium sulfate reaction under acidic conditions, again ammonium poly-vanadate is dewatered, takes off ammonium, roasting, can obtain the V of content＞99%
2O
5, use electrosmelting V
2O
5Can make ferro-vanadium.Again with rotary kiln coal base reduction agent reduction, obtain the metallized pellet of degree of metalization 88% after the pelletizing drying after the water logging, in electric furnace, do not obtain hot metal in steelmaking and contain TiO molten the branch with slag former with metallized pellet
252% molten minute slag.Molten iron is used for steel-making, and the molten titanium slag that divides is produced titanium white with sulfuric acid process.
3, vanadium flow process behind the first iron.This technical process is made ball earlier to sefstromite concentrate, and pelletizing advances rotary kiln and goes out the pelletizing of degree of metalization 85% with coal-based direct reduction, and pelletizing is molten the branch in electric furnace, and molten branch requires the vanadium slag input phase in the pelletizing, obtains molten iron and titanium vanadium slag.Molten iron is used for steel-making, and vanadium titanium slag sodium roasting to roasting material water logging vanadium extraction, is produced V
2O
5, the titanium slag after the water logging is produced titanium white with sulfuric acid process.
4, direct reduction, magnetic separation separation process scheme.This technical process is that sefstromite concentrate is joined additive reduction by force in rotary kiln or other type of furnaces, obtains the reduced iron of degree of metalization 90%, and again to the broken abrasive dust of reduced iron, its abrasive dust makes the iron powder of iron level more than 93% and contains V with mechanical way sorting
2O
5＞2%, TiO
2＞47% non magnetic vanadium titanium material.Vanadium titanium material dilute sulfuric acid makes the enrichment of vanadium titanium, obtains V
2O
5＞3%, TiO
2＞65% rich vanadium titanium material.To water law vanadium extraction behind the rich vanadium titanium material sodium roasting, make the V of content＞99% again
2O
5And TiO
2＞65% titanium slag.
5, single slag returns technical process.This technical process is the modified version flow process of blast furnace-bof process, and purpose is that iron → steel production line and vanadium extraction production line are separated, and reaches the purpose of scale operation steel.Vanadium enrichment in v-bearing steel slag, need only be handled a small amount of slag with regard to recyclable vanadium.This technology is that sefstromite concentrate is advanced big blast-furnace smelting vanadium-bearing hot metal, and vanadium-bearing hot metal advances big converter direct steelmaking, obtains molten steel and v-bearing steel slag.V-bearing steel slag after big fast slag iron is selected in fragmentation with sefstromite concentrate by V
2O
5＞2% carries out proportioning, and sintering for agglumeration is smelted vanadium-bearing hot metal with small furnace behind the sintering again.Vanadium-bearing hot metal advances primary converter and blows vanadium, gets vanadium slag and half steel water.The steel-making of half steel water, vanadium slag directly advances the electrosmelting vanadium iron again after electric rangette prereduction deironing.
Above technical process is all successfully recycled the useful composition in the sefstromite concentrate, has made products such as steel, vanadium iron, welding rod titanium white, pigment titanium white.But also there are some problems in these technologies in application:
The shortcoming of the 1st kind of blast furnace-bof process existence mainly contains: contain 12% TiO in (1) sefstromite concentrate
2, slagging in blast-furnace smelting, in the blast furnace slag＞20% TiO
2Can't recycle.(2) flow process is used duplex practice vanadium extraction steel-making, and a collection of molten iron needs just to finish vanadium extraction and steelmaking process with twice converter smelting, can not bring into play the throughput of converter.(3) duplex practice vanadium extraction steel-making, skimming after the vanadium extraction, the steel-making back is slag, and the molten iron in the process runs off with slag.According to statistics, the hot metal in steelmaking loss is 5%, and the iron of iron loss ambassador's sefstromite concentrate reclaims and reduces.(4) the shortage of heat during semi-steel making after the vanadium extraction, steelmaking process can not use relatively large steel scrap, and steel-making cost is higher relatively.(5) vanadium extraction by converter blowing prolongs more than 20 minutes the smelting process of iron → steel, gives when adopting continuous casting process, and the organization of production of iron → steel → continuous casting is brought certain difficulty.
The subject matter that the flowing molten iron journey exists behind the 2nd kind of first vanadium is: (1) must just can obtain V through twice high-temperature roasting (sodium and reduction) with a collection of sefstromite concentrate
2O
5Concentration be 10g/L contain the vanadium aqueous solution and iron, the raw material treatment capacity is big, technology is long, cost is high.(2) titanium slag behind the molten branch of sefstromite concentrate electric furnace, its TiO
2＞50%, but because of the variation of mineral facies in the fusing, acid ore deposit ratio reaches 1.7 when making titanium slag produce titanium white with sulfuric acid process, is much higher than 1.3～1.5 when using ilmenite concentrate.The level of residue of carrying behind the titanium end of processing can be 30%, and when being to use ilmenite concentrate five times have run into cost height, the difficulty that the Pollution abatement difficulty is big when intermediates titanium slag in the flow process is used as the titanium dioxide raw material.
The subject matter that the vanadium flow process exists behind the 3rd kind of first iron has: (1) metallized pellet needs to join the carbon operation in melting process, the molten bath is a reducing atmosphere, and vanadium will be present in the slag phase with oxide form, needs oxidizing atmosphere again.Test shows to have only the FeO content that melts in the branch slag greater than 10% o'clock, and vanadium just can be enriched in the slag.Because the FeO height in the slag then makes the rate of recovery of iron reduce, slag strengthens the corrosion of electric furnace liner, makes the utilization coefficient of electric furnace low, refractory consumption is big.(2) titanium slag of gained behind the molten branch pulp water leaching and vanadium extraction, TiO
2Grade 48%, the acid fusibleness is poor when being used to make titanium white, therefore uses titanium slag to do the titanium white raw material, and consumption is big, cost is high, pollutent is difficult for handling.
The 4th kind directly the characteristics of reduction, magnetic separation separation process be that sefstromite concentrate carries out reduction reaction under the solid phase condition, the iron crystal grain after the reduction is fully grown up to the degree that can carry out mechanical sorting.Therefore, technical process requires high to reducing degree, and products obtained therefrom is iron powder and vanadium titanium slag.Iron powder is used for field of powder metallurgy, and its reduction and assorting room must accurate operations.Therefore, handle the small scale of concentrate.It is uneconomical economically that individual curing vanadium titanium slag reclaims the vanadium titanium, and the application scale of this technical process is restricted.
The main drawback that the 5th kind of single slag returns technical process is: (1) is the same with the blast furnace bof process, only reclaims vanadium and iron in the technology, and titanium does not reclaim.(2) owing to use single-link procedure, total iron＜30% in the v-bearing steel slag.The total iron 53% of the sefstromite concentrate that slag is mixed, total iron＜40% in the compound, the slag iron ratio when making small furnace smelt vanadium-bearing hot metal reaches 1.7, and the small furnace utilization coefficient is low.(3) slag enrichment vanadium the time, phosphorus also obtains enrichment, and when the vanadium slag of dephosphorization treatment did not directly advance the electrosmelting vanadium, phosphorus content can exceed standard.
Summary of the invention
Technical problem to be solved by this invention provides a kind ofly produces the method for ferrotianium, steel and vanadium iron with sefstromite concentrate, and this method is reclaimed iron, vanadium, the titanium in the sefstromite concentrate comprehensively, and pollute little, rate of recovery height.
The technical scheme that technical solution problem of the present invention is adopted is: the method for producing ferrotianium, steel and vanadium iron with sefstromite concentrate, the steps include: 1) add basic metal reduction sefstromite concentrate, 2) the reduced iron fusing separates, 3) vanadium-bearing hot metal carries out dephosphorization treatment, 4) enter converter and blow vanadium steel-making, molten steel ingot casting, 5) with steel-making slag melting vanadium-bearing hot metal, to the vanadium-bearing hot metal rich vanadium slag of oxygen blowing, 6) rich vanadium slag smelting ferrovanadium, 7) the molten slag melting ferrotianium that divides.
The invention has the beneficial effects as follows:
1, adopt the molten reduced iron that divides of electric furnace, titanium slag is not contaminated, and vanadium advances molten iron, avoids not reclaiming in blast furnace bof process and the single slag Returning process shortcoming of titanium, has avoided the low and low shortcoming of electric furnace utilization ratio of iron recovery that the vanadium flow process causes the vanadium slag input behind the first iron yet.
2, v-bearing steel slag off-line vanadium extraction, it is big to have overcome blast furnace bof process vanadium extraction iron loss, the shortcoming that converter throughput can not be given full play to.
3, utilize slag to smelt vanadium-bearing hot metal, can not only reclaim vanadium and iron, can also make slag become the raw material that to produce cement, realize little slag field or stack castaway slag without the slag field by adjusting the composition of smelting solvent.
4, pyrometallurgical smelting vanadium iron can be removed complicated water logging process for extracting vanadium from, does not have a large amount of discharge of wastewater, and environmental pollution is little.
5, the supplied materials between each technology can be realized heat fortune hot charging, and energy consumption is low, and all recyclable utilization of the waste residue that produces between each technology does not have waste substantially, and the integral production scale is uncontrolled, can handle vanadium titano-magnetite on a large scale.
Embodiment
The inventive method is divided into following a few step:
One, sefstromite concentrate drastic reduction
Sefstromite concentrate is with addition of alkali additives drastic reduction in tunnel furnace.The molecular formula of sefstromite concentrate is FeO (FeV)
2O
32FeOTiO
2, when only considering the iron reduction, be abbreviated as: Fe
3O
42FeOTiO
2
Its reduction reaction formula is:
Two. fusing separates
Reduced iron with the hot stove fusing in ore deposit, realizes that ferrotitanium separates with addition of carbon.Molten purpose of dividing is further to use carbon selectivity reduction FeO and V
2O
5, make V enter molten iron, and TiO
2Do not reduce.
The principal reaction formula of this process is:
| FeO+C→Fe+CO |
| V 2O 5+C→V+CO |
| FeO·TiO 2+C→Fe+TiO 2+CO |
Three, vanadium extraction steel-making
1, the molten back gained vanadium-bearing hot metal that divides carries out dephosphorization treatment in hot metal ladle, and purpose is to reduce the initial phosphorus content of vanadium slag, to guarantee the quality of rear portion smelting ferrovanadium.The converter steelmaking of dephosphorization molten iron, receive molten steel and v-bearing steel slag, molten steel casting, v-bearing steel slag advance electric rangette and smelt vanadium-bearing hot metal.
Emphasis is protected the vanadium slag input in the steelmaking process, and vanadium is gone into slag in steel-making principal reaction formula is:
| V+O→V 2O 3 |
| FeO+V→Fe+V 2O 3 |
Vanadium form with spinel in slag exists, and molecular formula is: FeO (MeV)
2O
3
2, v-bearing steel slag advances electric rangette and smelts vanadium-bearing hot metal, and the total iron of slag is low, and the calcium height as reductive agent, obtains vanadium greater than 2% high vanadium ferroalloy water and the slag of making cement materials but smelt with carbon.
3, high vanadium ferroalloy water vanadium extraction in hot metal ladle, the rich vanadium slag of gained advances electric rangette refining vanadium iron.Molten iron returns converter steelmaking.
Four, vanadium iron is smelted
Rich vanadium slag hot charging advances the electric rangette smelting ferrovanadium, the first step prereduction deironing, and reductive agent adopts carbon.Make process only reduce FeO.Remove after the de-iron, the further enrichment of Vanadium Pentoxide in FLAKES becomes vanadium-rich slag.
Second step was sent vanadium-rich slag into another electric furnace, smelted with the sial method of reducing, adds CaO and improve basicity in smelting, can increase V
2O
5The degree that reduction reaction is carried out, the rate of recovery of raising vanadium.Its reaction formula is:
| V 2O 5+Si+CaO→V+CaO·SiO 2 |
| V 2O 3+Si+CaO→V+CaO·SiO 2 |
| V 2O 5+Al→V+Al 2O 3 |
| V 2O5+Al+CaO→V+CaO·Al 2O 3 |
| V+Fe→FeV |
Five, ferrotitanium smelting
Titanium slag heat after the separation is sent, and smelts ferrotianium with the outer thermite process of stove.The principal reaction of this process has:
TiO
2Add the Al reaction and generate Ti and Al
2O
3, also restore TiO simultaneously.Reaction formula is:
| TiO 2+Al→Ti+Al 2O 3 |
| TiO 2+Al→TiO+Al 2O 3 |
TiO only just can restore Ti under high basicity.Reaction formula is:
| TiO+Al+CaO→Ti+CaO·Al 2O 3 |
Net reaction:
| TiO 2+Al+CaO→Ti+CaO·Al 2O 3 |
| Ti+Fe→FeTi |
The equipment of technical process of the present invention is:
1) restoring system: be equipped with breeze mixing equipment, balling equipment, reduction stove, screening plant, magnetic plant.Sefstromite concentrate reduces at restoring system, obtains degree of metalization greater than 90% pelletizing.
2) steelmaking system: be equipped with ore-smelting furnace, converter and stove finishing apparatus.Pelletizing obtains titanium slag, steel and v-bearing steel slag after this system handles.
3) slag treatment system: be equipped with iron alloy production with electric furnace and attached treatment facility, water-cooled pond, sand blasting room etc.Titanium slag and slag obtain ferrotianium and vanadium iron in this system handles.
Sefstromite concentrate is finished material movement in above-mentioned three big systems, iron, vanadium, titanium in the sefstromite concentrate are reclaimed comprehensively.
Embodiment 1, single slag vanadium extracting method
1,94% sefstromite concentrate (weight percent, as follows), 3% yellow soda ash and 3% syrup is evenly mixed, pelletizer is made ball, becomes the ore ball in drying kiln for drying.
2, in the ratio batch mixing of ore ball 75%, coke powder 25%, in the fire-resistant can of packing into, fire-resistant can is loaded onto the kiln car reduction.
3, after reduction finished, cooling back kiln discharge was forced in air blast.
4, when the carbon content of pelletizing less than 0.6% the time, molten branch need be joined the carbon operation, mixed carbon comtent is 5% of a pelletizing weight, enters in the electric furnace by charging system.When the total iron in the slag＜3%, the slag cylinder is gone in slagging, goes out half steel water subsequently.
5, half steel water is made dephosphorization treatment at tundish adding lime and iron scale, pulls down dephosphorized slag after the slagging.
6, pretreated half steel water is gone into converter steelmaking, and slag heat is sent slag treatment system, molten steel casting.
7, after slag enters electric furnace, add burnt grain and make reductive agent and smelt, slag is slagged tap during for white slag, and molten iron advances the hot metal ladle vanadium extraction, slag making cement raw material.
8, after molten iron enters hot metal ladle, add the vanadium-raising cooling agent of forming by the smart slag of iron scale, iron ore and vanadium extraction, oxygen blast smelting molten iron, V in the slag
2O
5Greater than 20% o'clock, the rich vanadium slag of gained advanced next electric furnace prereduction, the steel-making of molten iron running stove.
9, after rich vanadium slag enters electric rangette, add burnt grain and make reductive agent, add lime and adjust basicity of slag, V in the slag
2O
5Greater than 30% o'clock, pour slag into the slag cylinder, the gained vanadium-rich slag gives next electrosmelting vanadium iron, and molten iron send converter steelmaking.
10, vanadium-rich slag enters electric furnace, adds the ferrosilicon reduction, moltenly adds aluminium block again after clear and smelts, and obtains vanadium iron.The smart slag of vanadium extraction partly returns next stove and smelts, and part is made the electric rangette vanadium-raising cooling agent.
11, the molten titanium slag that divides of electric furnace is delivered to the slag treatment system, adds ferrotianium, aluminum shot and calcium oxide, reacts the postcooling that finishes, and gets ferrotianium.
Embodiment 2, single slag vanadium extracting method
1,91% sefstromite concentrate (weight percent, as follows), 5% salt of wormwood and 4% syrup is evenly mixed, pelletizer is made ball, becomes the ore ball in drying kiln for drying.
2, in the ratio batch mixing of ore ball 73%, coke powder 27%, in the fire-resistant can of packing into, fire-resistant can is loaded onto the kiln car reduction.
3, after reduction finished, cooling back kiln discharge was forced in air blast.
4, when the carbon content of pelletizing less than 0.6% the time, molten branch need be joined the carbon operation, mixed carbon comtent is 6% of a pelletizing weight, enters in the electric furnace by charging system.When the total iron in the slag＜3%, the slag cylinder is gone in slagging, goes out half steel water subsequently.
5, half steel water is made dephosphorization treatment at tundish adding lime and iron scale, pulls down dephosphorized slag after the slagging.
6, pretreated half steel water is gone into converter steelmaking, and slag heat is sent slag treatment system, molten steel casting.
7, after slag enters electric furnace, add burnt grain and make reductive agent and smelt, slag is slagged tap during for white slag, and molten iron advances the hot metal ladle vanadium extraction, slag making cement raw material.
8, after molten iron enters hot metal ladle, add the vanadium-raising cooling agent of forming by the smart slag of iron scale, iron ore and vanadium extraction, oxygen blast smelting molten iron, V in the slag
2O
5Greater than 20% o'clock, the rich vanadium slag of gained advanced next electric furnace prereduction, the steel-making of molten iron running stove.
9, after rich vanadium slag enters electric rangette, add burnt grain and make reductive agent, add lime and adjust basicity of slag, V in the slag
2O
5Greater than 30% o'clock, pour slag into the slag cylinder, the gained vanadium-rich slag gives next electrosmelting vanadium iron, and molten iron send converter steelmaking.
10, vanadium-rich slag enters electric furnace, adds the ferrosilicon reduction, moltenly adds aluminium block again after clear and smelts, and obtains vanadium iron.The smart slag of vanadium extraction partly returns next stove and smelts, and part is made the electric rangette vanadium-raising cooling agent.
11, the molten titanium slag that divides of electric furnace is delivered to the slag treatment system, adds ferrotianium, aluminum shot and calcium oxide, reacts the postcooling that finishes, and gets ferrotianium.
Embodiment 3: two slag vanadium extracting methods
1, the organism that 89% sefstromite concentrate, 6% sodium-chlor and 5% humic coal are extracted is evenly mixed, and pelletizer is made ball, and drying kiln for drying becomes the ore ball.
2, in the ratio batch mixing of ore ball 70%, coke powder 30%, in the fire-resistant can of packing into, fire-resistant can is loaded onto the kiln car reduction.
3, cooling back kiln discharge was forced in air blast after reduction finished.
4, when the carbon content of metallization ball less than 0.6% the time, moltenly distribute the carbon operation, mixed carbon comtent is 8% of a pelletizing weight, enters in the electric furnace by charging system.When the total iron in the slag＜3%, the slag cylinder is gone in slagging, goes out half steel water subsequently.
5, half steel water is made dephosphorization treatment at tundish adding lime and iron scale, pulls down dephosphorized slag after the slagging, adds 5% silicon carbide carburetting then.
6, after molten iron advances converter, add the vanadium-raising cooling agent of forming by iron scale, iron ore, the smart slag of vanadium extraction earlier.Descend subsequently the rifle oxygen blast, skim vanadium slag, vanadium slag send electric rangette to smelt vanadium-bearing hot metal.Skimming behind the vanadium slag routinely smelting process makes steel with slag former.The broken replacing lime in steel-making slag cooling back is done the flux of smelting vanadium-bearing hot metal, molten steel ingot casting.
7, after vanadium slag is gone into electric furnace, add the blended stock that coke powder and steel-making slag are formed, heating is smelted, and vanadium pentoxide was slagged tap less than 1% o'clock in the slag, slag making cement raw material, and vanadium-bearing hot metal advances the hot metal ladle vanadium extraction.
8, after molten iron enters hot metal ladle, add the vanadium-raising cooling agent of forming by the smart slag of iron scale, iron ore and vanadium extraction, oxygen blast smelting molten iron, V in the slag
2O
5Greater than 20%, the rich vanadium slag of gained advances next electric furnace prereduction, the steel-making of molten iron running stove.
9, after rich vanadium slag enters electric rangette, add burnt grain and make reductive agent, add lime and adjust basicity of slag, V in the slag
2O
5Greater than 30% o'clock, pour slag into the slag cylinder, the gained vanadium-rich slag gives next electrosmelting vanadium iron, and molten iron send converter steelmaking.
10, vanadium-rich slag enters electric furnace, adds the ferrosilicon reduction, moltenly adds aluminium block again after clear and smelts, and obtains vanadium iron.The smart slag of vanadium extraction partly returns next stove and smelts, and part is made the electric rangette vanadium-raising cooling agent.
11, the molten titanium slag that divides of electric furnace is delivered to the slag treatment system, adds ferrotianium, aluminum shot and calcium oxide, reacts the postcooling that finishes, and gets ferrotianium.
Claims (10)
1, produces the method for ferrotianium, steel and vanadium iron with sefstromite concentrate, the steps include: 1) add basic metal reduction sefstromite concentrate, 2) the reduced iron fusing separates, 3) vanadium-bearing hot metal carries out dephosphorization treatment, 4) enter converter and blow vanadium steel-making, molten steel ingot casting, 5) with steel-making slag melting vanadium-bearing hot metal, to the vanadium-bearing hot metal rich vanadium slag of oxygen blowing, 6) rich vanadium slag smelting ferrovanadium, 7) the molten slag melting ferrotianium that divides.
2, as claimed in claim 1ly produce the method for ferrotianium, steel and vanadium iron with sefstromite concentrate, described step 1 is: with sefstromite concentrate 85-89%, basic metal 3%-6% and binding agent 2%-5% batch mixing, pelletizer is made the ball after drying; In the ratio batch mixing of coke powder 25%-30%, ore ball 70%-75%, will expect reduction postcooling kiln discharge again with the kiln car reduction.
3, as claimed in claim 2ly produce the method for ferrotianium, steel and vanadium iron with sefstromite concentrate, described basic metal is yellow soda ash, salt of wormwood or sodium-chlor, and described binding agent is the organism that syrup or humic coal extract.
4, as claimed in claim 1ly produce the method for ferrotianium, steel and vanadium iron with sefstromite concentrate, described step 2 is: when the carbon content of metallization ball less than 0.6% the time, join that carbon is molten to be divided, mixed carbon comtent is the 5-8% of pelletizing weight, when the total iron in the slag＜3%, slagging goes out half steel water.
5, as claimed in claim 1ly produce the method for ferrotianium, steel and vanadium iron with sefstromite concentrate, described step 3 is: add lime and iron scale, pull down dephosphorized slag after the slagging, plus silicon carbide carburetting then.
6, the method for producing ferrotianium, steel and vanadium iron with sefstromite concentrate as claimed in claim 1, described step 4 is: pretreated half steel water is gone into converter steelmaking, and molten steel casting is after slag enters electric furnace, add coke powder and make reductive agent, vanadium-bearing hot metal enters the hot metal ladle vanadium extraction.
7, as claimed in claim 1ly produce the method for ferrotianium, steel and vanadium iron with sefstromite concentrate, described step 5 is: after molten iron advances hot metal ladle, add vanadium-raising cooling agent, and the oxygen blast smelting molten iron, the steel-making of molten iron running stove obtains rich vanadium slag.
8, as claimed in claim 1ly produce the method for ferrotianium, steel and vanadium iron with sefstromite concentrate, described step 5 is: after molten iron advances converter, add vanadium-raising cooling agent, following rifle oxygen blast skims vanadium slag, and vanadium slag send electric rangette to smelt vanadium-bearing hot metal, vanadium slag is with slag former steel-making, molten steel ingot casting; Vanadium slag adds the blended stock of coke powder and steel-making slag composition, and heating is smelted, and vanadium pentoxide was slagged tap less than 1% o'clock in the slag, slag making cement raw material, and vanadium-bearing hot metal advances the hot metal ladle vanadium extraction.
9, as claimed in claim 1ly produce the method for ferrotianium, steel and vanadium iron with sefstromite concentrate, described step 6 is: after rich vanadium slag enters electric rangette, add burnt grain and make reductive agent, add lime and adjust basicity of slag, V in the slag
2O
5Greater than 30% o'clock, pour slag into the slag cylinder, the gained vanadium-rich slag gives next electrosmelting vanadium iron, and molten iron send converter steelmaking; Vanadium-rich slag enters electric furnace, adds the ferrosilicon reduction, moltenly adds aluminium block again after clear and smelts, and obtains vanadium iron.
10, as claimed in claim 1ly produce the method for ferrotianium, steel and vanadium iron with sefstromite concentrate, described step 7 is: the molten titanium slag that divides of electric furnace is delivered to the slag treatment system, adds ferrotianium, aluminum shot and calcium oxide, the reaction postcooling that finishes, ferrotianium.
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|---|---|---|---|
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| CNB2005100217495A CN100357470C (en) | 2005-09-27 | 2005-09-27 | Method for preparing ferro-titantium, steel and ferrovanadium from vanadium-titantium iron headings |
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| CN100449010C (en) * | 2006-10-24 | 2009-01-07 | 郴州市金龙铁合金有限公司 | Process for smelting ferrovanadium by extraction of vanadium from vanadium-containing errophosphorus |
| CN100564558C (en) * | 2007-11-30 | 2009-12-02 | 攀钢集团攀枝花钢铁研究院 | Method for comprehensively recovering iron, vanadium and titanium in vanadium-titanium magnetite concentrate |
| CN101831541A (en) * | 2010-04-27 | 2010-09-15 | 攀枝花学院 | Method for comprehensively utilizing molten slag and carbonitriding slag |
| 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 |
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| CN104878222A (en) * | 2015-06-09 | 2015-09-02 | 钢铁研究总院 | Hot-metal-ladle vanadium extraction method |
| CN105177278A (en) * | 2015-10-27 | 2015-12-23 | 攀钢集团攀枝花钢铁研究院有限公司 | Vanadium slag sodium salt roasting method |
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| CN111440988A (en) * | 2020-05-21 | 2020-07-24 | 中冶东方工程技术有限公司 | Silicon-vanadium alloy production method and silicon-vanadium alloy |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034264C (en) * | 1991-03-23 | 1997-03-19 | 冶金工业部长沙矿冶研究院 | Method for preparing microalloy iron powder by reduction grinding and selecting method |
| CN1016361B (en) * | 1991-04-24 | 1992-04-22 | 冶金工业部钢铁研究总院 | Barium titanium silicon iron composition intermediate alloy |
| GB2294255A (en) * | 1994-10-17 | 1996-04-24 | Magmint Ltd | Vanadium recovery process |
| CN1225562C (en) * | 2002-10-18 | 2005-11-02 | 中国科学院过程工程研究所 | Method of producing titanium enriched material using titanium mineral |
| CN1264993C (en) * | 2005-01-07 | 2006-07-19 | 四川龙蟒集团有限责任公司 | Method for separating and extracting metal element from varadium-titanium magnetite |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100449010C (en) * | 2006-10-24 | 2009-01-07 | 郴州市金龙铁合金有限公司 | Process for smelting ferrovanadium by extraction of vanadium from vanadium-containing errophosphorus |
| CN100564558C (en) * | 2007-11-30 | 2009-12-02 | 攀钢集团攀枝花钢铁研究院 | Method for comprehensively recovering iron, vanadium and titanium in vanadium-titanium magnetite concentrate |
| 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 |
| CN101519721B (en) * | 2009-04-17 | 2011-04-06 | 攀枝花学院 | Method for smelting vanadium-titanium-iron ore concentrate |
| CN101831541A (en) * | 2010-04-27 | 2010-09-15 | 攀枝花学院 | Method for comprehensively utilizing molten slag and carbonitriding slag |
| CN104878222A (en) * | 2015-06-09 | 2015-09-02 | 钢铁研究总院 | Hot-metal-ladle vanadium extraction method |
| CN105177278A (en) * | 2015-10-27 | 2015-12-23 | 攀钢集团攀枝花钢铁研究院有限公司 | Vanadium slag sodium salt roasting method |
| CN105734266A (en) * | 2016-02-25 | 2016-07-06 | 钢研晟华工程技术有限公司 | Comprehensive recovery process for vanadium titanium iron ore concentrate directly processed by sodium treatment |
| CN107058859A (en) * | 2016-08-30 | 2017-08-18 | 刘海永 | A kind of composite micro-alloyed alloy of the rare earth made of steel slags and its application |
| CN107868872A (en) * | 2017-11-30 | 2018-04-03 | 攀枝花学院 | The method that vanadium chromium reducing slag two step method reduction melting prepares vanadium ferrochrome |
| CN109033715A (en) * | 2018-09-05 | 2018-12-18 | 鞍钢股份有限公司 | A kind of blast furnace slag dual alkalinity determines method |
| CN109033715B (en) * | 2018-09-05 | 2023-05-16 | 鞍钢股份有限公司 | Binary basicity determination method for blast furnace slag |
| CN108998622A (en) * | 2018-09-30 | 2018-12-14 | 四川德胜集团钒钛有限公司 | A method of improving vanadium slag slag rate |
| CN111440988A (en) * | 2020-05-21 | 2020-07-24 | 中冶东方工程技术有限公司 | Silicon-vanadium alloy production method and silicon-vanadium alloy |
| CN113416882A (en) * | 2021-06-23 | 2021-09-21 | 攀枝花蒙兴冶金炉料有限公司 | Method for producing polycrystalline phase vanadium series alloy by utilizing waste rich material |
| CN113736944A (en) * | 2021-09-22 | 2021-12-03 | 攀枝花钢城集团有限公司 | Method for comprehensively utilizing vanadium-containing slag iron and titanium concentrate |
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