CN107043836A - A kind of method of blast furnace ironmaking - Google Patents
A kind of method of blast furnace ironmaking Download PDFInfo
- Publication number
- CN107043836A CN107043836A CN201710251662.XA CN201710251662A CN107043836A CN 107043836 A CN107043836 A CN 107043836A CN 201710251662 A CN201710251662 A CN 201710251662A CN 107043836 A CN107043836 A CN 107043836A
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- CN
- China
- Prior art keywords
- blast furnace
- coke
- powder
- sefstromite
- fluxing agent
- 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
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000000571 coke Substances 0.000 claims abstract description 53
- 239000000843 powder Substances 0.000 claims abstract description 48
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 30
- 239000003245 coal Substances 0.000 claims abstract description 24
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000002817 coal dust Substances 0.000 claims abstract description 22
- 238000002485 combustion reaction Methods 0.000 claims abstract description 21
- 239000002671 adjuvant Substances 0.000 claims abstract description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000446 fuel Substances 0.000 claims abstract description 14
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 14
- 239000001301 oxygen Substances 0.000 claims abstract description 14
- 235000019738 Limestone Nutrition 0.000 claims abstract description 13
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 13
- 239000010436 fluorite Substances 0.000 claims abstract description 13
- 239000006028 limestone Substances 0.000 claims abstract description 13
- 239000008188 pellet Substances 0.000 claims abstract description 13
- 229910001655 manganese mineral Inorganic materials 0.000 claims abstract description 12
- 230000003647 oxidation Effects 0.000 claims abstract description 11
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 11
- 238000003723 Smelting Methods 0.000 claims abstract description 8
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000004744 fabric Substances 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims 1
- 229910052748 manganese Inorganic materials 0.000 claims 1
- 239000011572 manganese Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 239000002893 slag Substances 0.000 abstract description 18
- 239000010936 titanium Substances 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 229910052719 titanium Inorganic materials 0.000 description 12
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 229910052720 vanadium Inorganic materials 0.000 description 6
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000003513 alkali Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000006479 redox reaction Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 241001417490 Sillaginidae Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/008—Composition or distribution of the charge
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/007—Conditions of the cokes or characterised by the cokes used
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/02—Making special pig-iron, e.g. by applying additives, e.g. oxides of other metals
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/04—Making slag of special composition
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Smelted the invention discloses a kind of method of blast furnace ironmaking, including by furnace charge supplying blast furnace；The furnace charge includes sefstromite, fluxing agent, fuel, oxidisability powder and combustion adjuvant；The sefstromite includes vanadium-titanium magnitite sinter, vanadium-titanium pellet and lump ore；The fluxing agent includes one or more in lime stone, fluorite and manganese mineral powder；The fuel is made up of coke, nut coke and coal dust；The oxidation powder is Fe2O3；The combustion adjuvant is oxygen, and the sefstromite accounts for more than the 98% of the furnace charge gross weight, and the condition of smelting includes：Hot blast temperature in blast furnace is 1,200 1400 DEG C, and oxygen enrichment percentage is 4 10 volume %.Methods described can improve to slag fluidity, carry high-coal ratio and nut coke ratio, so as to reduce coke ratio, improve the usage factor of blast furnace.
Description
Technical field
The invention belongs to technical field of blast furnace process, and in particular to a kind of method of blast furnace ironmaking.
Background technology
Blast furnace smelting iron method generally mainly includes：Sefstromite concentrate and common fine ore are sintered and produce sintering deposit,
Pellet is produced with sefstromite concentrate and common iron concentrate pelletization, then sintering deposit, pellet and a small amount of lump ore are pressed necessarily
Ratio, is added in blast furnace together with coke, while by Blast Furnace Injection coal dust and blasting air, makes coke and injection
Coal dust burns, generation reducing gas (mainly CO and H2), and reducing gas removes vanadium titanium magnetic during rising in stove
Oxygen in iron ore, reduction obtain iron, then dissolve drop onto cupola well realize slag, iron separation, so as to complete smelting process.
Wherein, blast furnace often smelts kilogram number of coke consumed in one ton of pig iron and represents that coke ratio is blast furnace ironmaking with coke ratio
Main economic and technical indices, concentrated expression blast furnace ironmaking raw material, fuel, the level of equipment and technical operation, coke ratio more it is low just
Represent that blast furnace working effect is better.At present, coke consumption is replaced using raising cheap fuel pulverized coal consumption, so that coke ratio is reduced,
Improve the capacity factor of a blast furnace.A large amount of coal dusts are unburned during big discharge rate coal powder injection carries high-coal ratio, and a part is discharged with blast furnace gas
Outside stove, another part is gathered in cupola well.Now, in cupola well unburned coal powder can be produced with the TiO2 reactions in slag substantial amounts of TiC,
TiN and Ti (C, N), the titanium-containing compound of these new generations has higher fusing point, causes titanium slag to become sticky, be unfavorable for
Slag sluicing system, and there is hearth accumulation phenomenon.
The content of the invention
Goal of the invention：The present invention is directed to deficiency of the prior art, proposes a kind of method of blast furnace ironmaking, and this method can change
It is kind that high-coal ratio and nut coke ratio are carried to slag fluidity, so as to reduce coke ratio, improve the usage factor of blast furnace.
Technical scheme：A kind of method of blast furnace ironmaking of the present invention, methods described includes entering in furnace charge supplying blast furnace
Row is smelted；The furnace charge includes sefstromite, fluxing agent, fuel, oxidisability powder and combustion adjuvant；The sefstromite includes vanadium
Titanium sintering deposit, vanadium-titanium pellet and lump ore；The fluxing agent includes one or more in lime stone, fluorite and manganese mineral powder；It is described
Fuel is made up of coke, nut coke and coal dust；The oxidation powder is Fe2O3；The combustion adjuvant is oxygen, and the sefstromite is accounted for
More than the 98% of the furnace charge gross weight, the condition of smelting includes：Hot blast temperature in blast furnace is 1200-1400 DEG C, oxygen-enriched
Rate is 4-10 volumes %.
Further, methods described also includes the nut coke being added in the sefstromite, is uniformly mixed to form ore deposit
Rock layers；The coke and ore layer alternating cloth are entered into blast furnace, the alternate layer structure of ore layer and coke layer is formed.
Further, methods described also includes the fluxing agent, the oxidation powder with the combustion adjuvant with the coal dust
Injection enters blast furnace.
Further, in terms of quality percentage, the sefstromite includes vanadium-titanium magnitite sinter 65%~80%, vanadium-titanium pellet
15%~25% and lump ore 2%~10%.
Further, in terms of quality percentage, the fluxing agent is 0 .5~5% of the coal dust amount；In terms of quality percentage,
The fluxing agent includes lime stone 20~80%, fluorite 5~60% and manganese mineral powder 15%~60%.
Further, in terms of quality percentage, the oxidisability powder is 0 .8~6% of the coal dust amount.
Further, the nut coke granularity is 6~20mm.
Further, the coal powder size is 180~200 mesh.
Further, methods described also includes control 200~350kg/t of coke ratio, and nut coke is than 50~160kg/t, coal ratio
120~170kg/t.
Beneficial effect：The present invention is used as and helped using alkali flux lime stone, center fluxing agent fluorite and manganese mineral powder mixing
Flux, reduction ironmaking fusing point, and improve slag fluidity；Combustion adjuvant is added as furnace charge, the coal powder ignition time can be shortened, by force
Powdered coal burns, and improves the combustion rate of coal dust, reduces unburned coal powder content in stove, it is to avoid the TiO2 reduction in slag；Add oxygen
Powder Fe2O3 is as furnace charge for the property changed, and can occur redox reaction with Low-valent Titanium (such as TiC, TiN and TiCN), by Low-valent Titanium
Be oxidized to high price titanium, improve Performance of Slag, effectively reduce the viscosity of high-titanium blast furnace slag under the conditions of big coal injection, beneficial to titanium slag with
Slag sluicing system.
Embodiment
With reference to specific embodiment, the invention will be further described：
Embodiment 1
A kind of method of blast furnace ironmaking, methods described includes being smelted in furnace charge supplying blast furnace；The furnace charge includes vanadium ferrotianium
Ore deposit, fluxing agent, fuel, oxidisability powder and combustion adjuvant；The sefstromite includes vanadium-titanium magnitite sinter, vanadium-titanium pellet and block
Ore deposit；The fluxing agent includes one or more in lime stone, fluorite and manganese mineral powder；The fuel is by coke, nut coke and coal dust group
Into；The oxidation powder is Fe2O3；The combustion adjuvant is oxygen, and the nut coke is added in the sefstromite, uniform mixed
Conjunction forms ore layer；The coke and ore layer alternating cloth are entered into blast furnace, the alternate of ore layer and coke layer is formed
Layer structure, the fluxing agent, the oxidation powder enter blast furnace with the combustion adjuvant with the breeze blowing.The vanadium ferrotianium
Ore deposit accounts for more than the 98% of the furnace charge gross weight, and the condition of smelting includes：Hot blast temperature in blast furnace is 1200 DEG C, oxygen enrichment percentage
For 4 volume %.
In terms of quality percentage, the sefstromite includes vanadium-titanium magnitite sinter 65%, vanadium-titanium pellet 15% and lump ore 2%.
In terms of quality percentage, the fluxing agent is 0 .5% of the coal dust amount；In terms of quality percentage, the fluxing agent includes lime stone
20%th, fluorite 5% and manganese mineral powder 15%.In terms of quality percentage, the oxidisability powder is 0 .8% of the coal dust amount.
The nut coke granularity is 6mm, and the coal powder size is 180 mesh.Methods described also includes control coke ratio 200kg/t,
Nut coke compares 120kg/t than 50kg/t, coal.
Embodiment 2
A kind of method of blast furnace ironmaking, methods described includes being smelted in furnace charge supplying blast furnace；The furnace charge includes vanadium ferrotianium
Ore deposit, fluxing agent, fuel, oxidisability powder and combustion adjuvant；The sefstromite includes vanadium-titanium magnitite sinter, vanadium-titanium pellet and block
Ore deposit；The fluxing agent includes one or more in lime stone, fluorite and manganese mineral powder；The fuel is by coke, nut coke and coal dust group
Into；The oxidation powder is Fe2O3；The combustion adjuvant is oxygen, and the nut coke is added in the sefstromite, uniform mixed
Conjunction forms ore layer；The coke and ore layer alternating cloth are entered into blast furnace, the alternate of ore layer and coke layer is formed
Layer structure, the fluxing agent, the oxidation powder enter blast furnace with the combustion adjuvant with the breeze blowing.The vanadium ferrotianium
Ore deposit accounts for more than the 98% of the furnace charge gross weight, and the condition of smelting includes：Hot blast temperature in blast furnace is 1400 DEG C, oxygen enrichment percentage
For 10 volume %.
In terms of quality percentage, the sefstromite includes vanadium-titanium magnitite sinter 80%, vanadium-titanium pellet 25% and lump ore 10%.
In terms of quality percentage, the fluxing agent is the 5% of the coal dust amount；In terms of quality percentage, the fluxing agent includes lime stone
80%th, fluorite 60% and manganese mineral powder 60%.In terms of quality percentage, the oxidisability powder is the 6% of the coal dust amount.
The nut coke granularity is 20mm, and the coal powder size is 200 mesh.Methods described also includes control coke ratio 350kg/t,
Nut coke compares 170kg/t than 160kg/t, coal.
Embodiment 3
A kind of method of blast furnace ironmaking, methods described includes being smelted in furnace charge supplying blast furnace；The furnace charge includes vanadium ferrotianium
Ore deposit, fluxing agent, fuel, oxidisability powder and combustion adjuvant；The sefstromite includes vanadium-titanium magnitite sinter, vanadium-titanium pellet and block
Ore deposit；The fluxing agent includes one or more in lime stone, fluorite and manganese mineral powder；The fuel is by coke, nut coke and coal dust group
Into；The oxidation powder is Fe2O3；The combustion adjuvant is oxygen, and the nut coke is added in the sefstromite, uniform mixed
Conjunction forms ore layer；The coke and ore layer alternating cloth are entered into blast furnace, the alternate of ore layer and coke layer is formed
Layer structure, the fluxing agent, the oxidation powder enter blast furnace with the combustion adjuvant with the breeze blowing.The vanadium ferrotianium
Ore deposit accounts for more than the 98% of the furnace charge gross weight, and the condition of smelting includes：Hot blast temperature in blast furnace is 1300 DEG C, oxygen enrichment percentage
For 6 volume %.
In terms of quality percentage, the sefstromite includes vanadium-titanium magnitite sinter 70%, vanadium-titanium pellet 20% and lump ore 6%.
In terms of quality percentage, the fluxing agent is the 3% of the coal dust amount；In terms of quality percentage, the fluxing agent includes lime stone
60%th, fluorite 30% and manganese mineral powder 40%.In terms of quality percentage, the oxidisability powder is the 3% of the coal dust amount.
The nut coke granularity is 10mm, and the coal powder size is 190 mesh.Methods described also includes control coke ratio 250kg/t,
Nut coke compares 150kg/t than 100kg/t, coal.
The present invention is used as fluxing agent, reduction using alkali flux lime stone, center fluxing agent fluorite and manganese mineral powder mixing
Fusing point is smelted iron, and improves slag fluidity；Combustion adjuvant is added as furnace charge, the coal powder ignition time can be shortened, strengthens coal dust firing
, the combustion rate of coal dust is improved, unburned coal powder content in stove is reduced, it is to avoid the TiO2 reduction in slag；Add oxidisability powder
Fe2O3 can occur redox reaction with Low-valent Titanium (such as TiC, TiN and TiCN), Low-valent Titanium is oxidized into height as furnace charge
Valency titanium, improves Performance of Slag, the viscosity of high-titanium blast furnace slag under the conditions of big coal injection is effectively reduced, beneficial to titanium slag and slag sluicing system.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modification
For the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit according to the present invention
Any simple modification, equivalent variations and the modification made to above example, in the range of still falling within technical solution of the present invention.
Claims (9)
1. a kind of method of blast furnace ironmaking, it is characterised in that methods described includes being smelted in furnace charge supplying blast furnace；The stove
Material includes sefstromite, fluxing agent, fuel, oxidisability powder and combustion adjuvant；The sefstromite includes vanadium-titanium magnitite sinter, vanadium titanium
Pellet and lump ore；The fluxing agent includes one or more in lime stone, fluorite and manganese mineral powder；The fuel is by coke, Jiao
Fourth and coal dust composition；The oxidation powder is Fe2O3；The combustion adjuvant is oxygen, and the sefstromite accounts for the furnace charge gross weight
More than the 98% of amount, the condition of smelting includes：Hot blast temperature in blast furnace is 1200-1400 DEG C, and oxygen enrichment percentage is 4-10 bodies
Product %.
2. the method for blast furnace ironmaking according to claim 1, it is characterised in that methods described also includes adding the nut coke
Into the sefstromite, ore layer is uniformly mixed to form；The coke and ore layer alternating cloth are entered into blast furnace, formed
The alternate layer structure of ore layer and coke layer.
3. the method for blast furnace ironmaking according to claim 1, it is characterised in that methods described also includes the fluxing agent, institute
State oxidation powder and enter blast furnace with the breeze blowing with the combustion adjuvant.
4. the method for blast furnace ironmaking according to claim 1, it is characterised in that in terms of quality percentage, the sefstromite bag
Include vanadium-titanium magnitite sinter 65%~80%, vanadium-titanium pellet 15%~25% and lump ore 2%~10%.
5. the method for blast furnace ironmaking according to claim 1, it is characterised in that in terms of quality percentage, the fluxing agent is institute
State 0 .5~5% of coal dust amount；In terms of quality percentage, the fluxing agent includes lime stone 20~80%, fluorite 5~60% and manganese
Miberal powder 15%~60%.
6. the method for blast furnace ironmaking according to claim 1, it is characterised in that in terms of quality percentage, the oxidisability powder
For 0 .8~6% of the coal dust amount.
7. the method for blast furnace ironmaking according to claim 1, it is characterised in that the nut coke granularity is 6~20mm.
8. the method for blast furnace ironmaking according to claim 1, it is characterised in that the coal powder size is 180~200 mesh.
9. the method for blast furnace ironmaking according to claim 1, it is characterised in that methods described also include control coke ratio 200~
350kg/t, nut coke is than 50~160kg/t, and coal is than 120~170kg/t.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710251662.XA CN107043836A (en) | 2017-04-18 | 2017-04-18 | A kind of method of blast furnace ironmaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710251662.XA CN107043836A (en) | 2017-04-18 | 2017-04-18 | A kind of method of blast furnace ironmaking |
Publications (1)
| Publication Number | Publication Date |
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| CN107043836A true CN107043836A (en) | 2017-08-15 |
Family
ID=59545267
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| CN201710251662.XA Pending CN107043836A (en) | 2017-04-18 | 2017-04-18 | A kind of method of blast furnace ironmaking |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108330238A (en) * | 2018-02-27 | 2018-07-27 | 北京科技大学 | A method of utilizing the smelting vanadium-titanium magnetite by blast furnace of superelevation oxygen-enriched air blast |
| CN108842016A (en) * | 2018-08-21 | 2018-11-20 | 成渝钒钛科技有限公司 | Improve the method that schreyerite smelts productivity |
| CN117487978A (en) * | 2023-11-27 | 2024-02-02 | 山东钢铁集团永锋临港有限公司 | A kind of blast furnace high-intensity smelting method |
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| CN103820590A (en) * | 2014-02-11 | 2014-05-28 | 东北大学 | Ore and coke mixed blast furnace smelting method for vanadium-titanium magnetite ore |
| CN106191351A (en) * | 2016-08-31 | 2016-12-07 | 云南德胜钢铁有限公司 | A kind of method of blast furnace ironmaking |
| CN106282453A (en) * | 2016-08-31 | 2017-01-04 | 云南德胜钢铁有限公司 | A kind of method of sefstromite blast furnace process |
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2017
- 2017-04-18 CN CN201710251662.XA patent/CN107043836A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102206718A (en) * | 2010-03-29 | 2011-10-05 | 攀钢集团钢铁钒钛股份有限公司 | Furnace charge for vanadium-titanium magnetite blast furnace smelting, and blast furnace smelting method |
| CN103820590A (en) * | 2014-02-11 | 2014-05-28 | 东北大学 | Ore and coke mixed blast furnace smelting method for vanadium-titanium magnetite ore |
| CN106191351A (en) * | 2016-08-31 | 2016-12-07 | 云南德胜钢铁有限公司 | A kind of method of blast furnace ironmaking |
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| CN108330238A (en) * | 2018-02-27 | 2018-07-27 | 北京科技大学 | A method of utilizing the smelting vanadium-titanium magnetite by blast furnace of superelevation oxygen-enriched air blast |
| CN108330238B (en) * | 2018-02-27 | 2019-11-12 | 北京科技大学 | A method for smelting vanadium-titanium magnetite using a blast furnace with ultra-high oxygen-enriched blast |
| CN108842016A (en) * | 2018-08-21 | 2018-11-20 | 成渝钒钛科技有限公司 | Improve the method that schreyerite smelts productivity |
| CN117487978A (en) * | 2023-11-27 | 2024-02-02 | 山东钢铁集团永锋临港有限公司 | A kind of blast furnace high-intensity smelting method |
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Application publication date: 20170815 |