CN108950111A - High-grade blast-furnace smelting method for vanadium titano-magnetite - Google Patents
High-grade blast-furnace smelting method for vanadium titano-magnetite Download PDFInfo
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- CN108950111A CN108950111A CN201810915866.3A CN201810915866A CN108950111A CN 108950111 A CN108950111 A CN 108950111A CN 201810915866 A CN201810915866 A CN 201810915866A CN 108950111 A CN108950111 A CN 108950111A
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- magnetite
- vanadium titano
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- 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
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- 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 invention discloses a kind of high-grade blast-furnace smelting method for vanadium titano-magnetite, belong to iron and steel smelting technology field.High-grade blast-furnace smelting method for vanadium titano-magnetite, comprising: sinter and pellet are mixed and carry out blast furnace process, obtains molten iron and clinker；The raw material of the sinter forms are as follows: v-ti magnetite concentrate, iron ore concentrate, active lime and fuel；The pellet is made by v-ti magnetite concentrate and bentonite pelletizing.The method of the present invention prepares sinter and pellet using the low Ti type V-Ti magnetite concentrate of high-speed rail, and the use ratio of vanadium titano-magnetite is greatly improved with addition of sinter and pellet in blast furnace process, and by high wind-warm syndrome, the measure of oxygen-enriched air blast, in clinker TiO2Content is up under conditions of 20~25wt%, realizes the strengthening smelting of vanadium titano-magnetite, reduces the production cost of blast furnace ironmaking, is improved molten iron vanadium content, is more efficiently realized the comprehensive utilization of vanadium titano-magnetite.
Description
Technical field
The invention belongs to iron and steel smelting technology fields, are related to a kind of high-grade blast-furnace smelting method for vanadium titano-magnetite.
Background technique
In recent years, the main method of blast furnace v-bearing titanomagnetite smelting is that sefstromite concentrate and common fine ore are sintered life
Output sinter is produced oxide pellet with sefstromite concentrate and common iron concentrate pelletization, then sinter, pellet and is lacked
Gauge block mine according to a certain percentage, is added in blast furnace together with coke, and blowing air down combustion of coke generates reducing gas, also Primordial Qi
The decline that body rises with furnace charge restores ore, then dissolves and drops onto cupola well completion ironmaking smelting process, realizes slag, iron
Separation；This method vanadium titano-magnetite accounts for the ratio of furnace charge generally 60~80%；The use ratio of vanadium titano-magnetite is relatively low, leads
Cause molten iron vanadium content relatively low, the high production cost of blast furnace ironmaking.
Summary of the invention
The present invention improves molten iron vanadium content, reduces blast furnace to improve the use ratio of vanadium titano-magnetite in blast furnace process
The production cost of ironmaking provides a kind of high-grade blast-furnace smelting method for vanadium titano-magnetite, comprising the following steps: by sinter and
Pellet mixing carries out blast furnace process, obtains molten iron and clinker；The raw material of the sinter forms are as follows: v-ti magnetite concentrate, common
Iron ore concentrate, active lime and fuel；The pellet is made by v-ti magnetite concentrate and bentonite pelletizing.
Wherein, in high-grade blast-furnace smelting method for vanadium titano-magnetite described above, the raw material of the sinter is formed are as follows:
55~75 parts by weight of v-ti magnetite concentrate, common 5~25 parts by weight of iron ore concentrate, 5~13 parts by weight of active lime and fuel 4~7
Parts by weight.
Wherein, in high-grade blast-furnace smelting method for vanadium titano-magnetite described above, the basicity of the sinter is 2.0~
2.5。
Wherein, in high-grade blast-furnace smelting method for vanadium titano-magnetite described above, when preparing pellet, v-ti magnetite essence
Mining amount is 97~99 parts by weight, and bentonite consumption is 1~3 parts by weight.
Wherein, in high-grade blast-furnace smelting method for vanadium titano-magnetite described above, the dosage of the sinter is 40~
75 mass parts；The dosage of the pellet is 25~60 mass parts.
Wherein, in high-grade blast-furnace smelting method for vanadium titano-magnetite described above, TFe is 60 in the sefstromite concentrate
~63wt%, TiO2For 6~8wt%.
Wherein, in high-grade blast-furnace smelting method for vanadium titano-magnetite described above, the common iron ore concentrate includes following
Chemical component: TFe 50~60wt%, SiO28~15wt%, CaO 2~4wt% of 1~3wt%, MgO and Al2O31~
5wt%.
Wherein, in high-grade blast-furnace smelting method for vanadium titano-magnetite described above, the fuel is in coke or coal dust
At least one.
Wherein, in high-grade blast-furnace smelting method for vanadium titano-magnetite described above, the granularity of the pellet is 10mm
~16mm≤90wt%；The compression strength of the pellet is 2000~3000N/.
Wherein, in high-grade blast-furnace smelting method for vanadium titano-magnetite described above, the preparation process of the pellet joins
Number are as follows: the pelletizing of control green-ball moisture 8.0%~9.5%, drop strength >=6 time, compression strength index >=1.5kg, green-ball is dry
500~600 DEG C of dry temperature, the time 8~12 minutes, then 800~1000 DEG C of preheating temperature, the time 20~30 minutes, then roasted
Burn 1200~1250 DEG C of temperature, the time 25~40 minutes.
Wherein, in high-grade blast-furnace smelting method for vanadium titano-magnetite described above, when blast furnace process, control wind-warm syndrome is
1200~1250 DEG C, oxygen enrichment percentage is 2~5%.
Wherein, in high-grade blast-furnace smelting method for vanadium titano-magnetite described above, when blast furnace process, coke 420 is added
100~150kg/tFe of~470kg/tFe and coal dust.
Wherein, in high-grade blast-furnace smelting method for vanadium titano-magnetite described above, [Ti] 0.1 in the molten iron~
0.3wt%, [Si] 0.1~0.3wt%.
Wherein, in high-grade blast-furnace smelting method for vanadium titano-magnetite described above, TiO in the clinker220~
25wt%；The basicity of the clinker is 1.05~1.15.
The beneficial effects of the present invention are:
The method of the present invention is by, with addition of sinter and pellet, being greatly improved v-ti magnetite in blast furnace ironmaking process
The use ratio of mine, and by high wind-warm syndrome, the measure of oxygen-enriched air blast, in clinker TiO2Content is up to the condition of 20~25wt%
Under, the strengthening smelting of vanadium titano-magnetite is realized, the production cost of blast furnace ironmaking is reduced, improves molten iron vanadium content, more
The efficient comprehensive utilization for realizing vanadium titano-magnetite.
Specific embodiment
Specifically, high-grade blast-furnace smelting method for vanadium titano-magnetite, comprising the following steps: the following steps are included: will sintering
Mine and pellet mixing carry out blast furnace process, obtain molten iron and clinker；The raw material of the sinter forms are as follows: v-ti magnetite concentrate,
Common iron ore concentrate, active lime and fuel；The pellet is made by v-ti magnetite concentrate and bentonite pelletizing.
Material chemical component used in the present invention is as shown in table 1.
The main component (wt%) of 1 raw material of table
| TFe | SiO2 | CaO | MgO | Al2O3 | V2O5 | TiO2 | |
| V-ti magnetite concentrate | 60~63 | 1~2 | 0.5~1 | 1~2 | 1~2 | 0.6~0.8 | 6~8 |
| Common iron ore concentrate | 50~60 | 8~15 | 1~3 | 2~4 | 1~5 | — | — |
| Vanadium-titanium pellet | 59~62 | 1~2 | 1~3 | 1~2 | 1~2 | 0.6~0.8 | 6~8 |
In the method for the present invention, the raw material of the sinter is formed are as follows: 55~75 parts by weight of v-ti magnetite concentrate, common iron essence
5~25 parts by weight of mine, 4~7 parts by weight of 5~13 parts by weight of active lime and fuel；The basicity of the sinter is 2.0~2.5.
In the method for the present invention, 97~99 parts by weight of v-ti magnetite concentrate and 1~3 parts by weight of bentonite are mixed and are made
Ball, controls green-ball moisture 8.0%~9.5%, and the pelletizing of drop strength >=6 time, compression strength index >=1.5kg, green-ball is dry
500~600 DEG C of temperature, the time 8~12 minutes, then 800~1000 DEG C of preheating temperature, the time 20~30 minutes, then roasted
1200~1250 DEG C of temperature, the time 25~40 minutes, obtain granularity 10mm~16mm≤90%, 2000~3000N/ of compression strength
A pellet.
Wherein, in high-grade blast-furnace smelting method for vanadium titano-magnetite described above, the dosage of the sinter is 40~
75 mass parts；The dosage of the pellet is 25~60 mass parts.
In the method for the present invention, the fuel is at least one of coke or coal dust.
When the method for the present invention blast furnace process, control wind-warm syndrome is 1200~1250 DEG C, and oxygen enrichment percentage is 2~5%, and coke is added
100~150kg/tFe of 420~470kg/tFe and coal dust, can be in clinker TiO2Under conditions of content is 20~25wt%, obtain
The molten iron of [Ti] 0.1~0.3wt%, [Si] 0.1~0.3wt%；Wherein, the basicity of clinker is 1.05~1.15.
Below by embodiment, invention is further described in detail, but does not therefore limit the scope of the present invention
Among the embodiment described range.
Embodiment 1
Prepare sinter: raw material contains the component of following weight proportion: 75 parts by weight of v-ti magnetite concentrate in sinter, general
Logical 5 parts by weight of iron ore concentrate, 6 parts by weight of active lime, 4 parts by weight of fuel (coke blacking)；Above-mentioned raw materials are mixed, then plus water,
The mixture is added continuous pallettype sintering machine and carries out coal gas ignition sintering by the mixture for forming aqueous 7.8%, and bed depth control is
600~800mm；
It prepares pellet: vanadium-titanium pellet, ball will be made after 99 parts by weight vanadium ilmenite concentrate powder and 1 parts by weight of bentonite ingredient
The technological parameter of nodulizing: pelletizing granularity 10mm~16mm≤90%, the control of green-ball moisture 8.0%~9.5%, drop strength >=
6 times, compression strength index >=1.5kg；500 DEG C of pelletizing drying temperature, the time 12 minutes, 1000 DEG C of preheating temperature, the time 20 divided
Clock, 1200 DEG C of maturing temperature, the time 40 minutes；
Blast furnace process: the sinter of 70 mass parts and the pellet of 30 parts by weight are incorporated blast furnace, coke 440kg/ is added
TFe, coal dust 120kg/tFe, are smelted, and control 1220 DEG C of wind-warm syndrome, oxygen enrichment percentage reaches 2%, obtains molten iron and clinker；In molten iron
[Ti] 0.1~0.3wt%, [Si] 0.1~0.3wt%；TiO in clinker222.0wt%, basicity of slag (CaO/SiO in clinker2Weight
Measure ratio) it is 1.05~1.15.
The present embodiment blast furnace process schreyerite the results are shown in Table 2.
Embodiment 2
Prepare sinter: raw material contains the component of following weight proportion: 70 parts by weight of v-ti magnetite concentrate in sinter, general
Logical 15 parts by weight of iron ore concentrate, 9 parts by weight of active lime, 6 parts by weight of fuel (coke blacking)；Above-mentioned raw materials are mixed, then plus water,
The mixture is added continuous pallettype sintering machine and carries out coal gas ignition sintering by the mixture for forming aqueous 7.5%, and bed depth control is
600~800mm；
It prepares pellet: vanadium-titanium pellet, ball will be made after 97 parts by weight vanadium ilmenite concentrate powder and 3 parts by weight of bentonite ingredients
The technological parameter of nodulizing: pelletizing granularity 10mm~16mm≤90%, the control of green-ball moisture 8.0%~9.5%, drop strength >=
6 times, compression strength index >=1.5kg；600 DEG C of pelletizing drying temperature, the time 8 minutes, 900 DEG C of preheating temperature, the time 30 minutes,
1250 DEG C of maturing temperature, the time 30 minutes；
Blast furnace process: the sinter of 60 mass parts and the pellet of 40 parts by weight are incorporated blast furnace, coke 445kg/ is added
TFe, coal dust 110kg/tFe, are smelted, and control 1230 DEG C of wind-warm syndrome, oxygen enrichment percentage reaches 3%, obtains molten iron and clinker；In molten iron
[Ti] 0.1~0.3wt%, [Si] 0.1~0.3wt%；TiO in clinker222.5wt%, basicity of slag (CaO/SiO in clinker2Weight
Measure ratio) it is 1.05~1.15.
The present embodiment blast furnace process schreyerite the results are shown in Table 2.
Embodiment 3
Prepare sinter: raw material contains the component of following weight proportion: 55 parts by weight of v-ti magnetite concentrate in sinter, general
Logical 25 parts by weight of iron ore concentrate, 13 parts by weight of active lime, 7 parts by weight of fuel (coke blacking)；Above-mentioned raw materials are mixed, then plus
Water forms aqueous 7.2% mixture, which is added continuous pallettype sintering machine and carries out coal gas ignition sintering, bed depth control
It is made as 600~800mm；
It prepares pellet: vanadium-titanium pellet, ball will be made after 98 parts by weight vanadium ilmenite concentrate powder and 2 parts by weight of bentonite ingredients
The technological parameter of nodulizing: pelletizing granularity 10mm~16mm≤90%, the control of green-ball moisture 8.0%~9.5%, drop strength >=
6 times, compression strength index >=1.5kg；550 DEG C of pelletizing drying temperature, the time 10 minutes, 800 DEG C of preheating temperature, the time 30 divided
Clock, 1200 DEG C of maturing temperature, the time 35 minutes；
Blast furnace process: the sinter of 50 mass parts and the pellet of 50 parts by weight are incorporated blast furnace, coke 450kg/ is added
TFe, coal dust 102kg/tFe, are smelted, and control 1240 DEG C of wind-warm syndrome, oxygen enrichment percentage reaches 4%, obtains molten iron and clinker；In molten iron
[Ti] 0.1~0.3wt%, [Si] 0.1~0.3wt%；TiO in clinker223.0wt%, basicity of slag (CaO/SiO in clinker2Weight
Measure ratio) it is 1.05~1.15.
The present embodiment blast furnace process schreyerite the results are shown in Table 2.
2 blast furnace process schreyerite result of table
As shown in Table 1, as vanadium-titanium pellet proportion raising in furnace charge, sinter proportion reduce, the increase of wind-warm syndrome is oxygen-enriched
The raising of rate realizes the reinforcing of blast furnace process, and usage factor increases, and fuel ratio reduces, and technical indicator has reached improvement.
Claims (10)
1. high-grade blast-furnace smelting method for vanadium titano-magnetite, it is characterised in that: mix sinter and pellet and carry out blast furnace smelting
Refining, obtains molten iron and clinker；The raw material of the sinter forms are as follows: v-ti magnetite concentrate, common iron ore concentrate, active lime and combustion
Material；The pellet is made by v-ti magnetite concentrate and bentonite pelletizing.
2. high-grade blast-furnace smelting method for vanadium titano-magnetite according to claim 1, it is characterised in that: the sinter
Raw material composition are as follows: 55~75 parts by weight of v-ti magnetite concentrate, common 5~25 parts by weight of iron ore concentrate, 5~13 parts by weight of active lime
With 4~7 parts by weight of fuel.
3. high-grade blast-furnace smelting method for vanadium titano-magnetite according to claim 1, it is characterised in that: prepare pellet
When, v-ti magnetite concentrate dosage is 97~99 parts by weight, and bentonite consumption is 1~3 parts by weight.
4. high-grade blast-furnace smelting method for vanadium titano-magnetite according to claim 1, it is characterised in that: the sinter
Dosage is 40~75 mass parts；The dosage of the pellet is 25~60 mass parts.
5. high-grade blast-furnace smelting method for vanadium titano-magnetite according to any one of claims 1 to 4, it is characterised in that: institute
Stating TFe in sefstromite concentrate is 60~63wt%, TiO2For 6~8wt%.
6. high-grade blast-furnace smelting method for vanadium titano-magnetite according to any one of claims 1 to 4, it is characterised in that: institute
Stating common iron ore concentrate includes following chemical component: TFe 50~60wt%, SiO28~15wt%, CaO 1~3wt%, MgO 2
~4wt% and Al2O31~5wt%.
7. high-grade blast-furnace smelting method for vanadium titano-magnetite according to any one of claims 1 to 4, it is characterised in that: institute
Stating fuel is at least one of coke or coal dust.
8. high-grade blast-furnace smelting method for vanadium titano-magnetite according to any one of claims 1 to 4, it is characterised in that: institute
The granularity for stating pellet is 10mm~16mm≤90wt%；The compression strength of the pellet is 2000~3000N/.
9. high-grade blast-furnace smelting method for vanadium titano-magnetite according to claim 1, it is characterised in that: when blast furnace process,
Controlling wind-warm syndrome is 1200~1250 DEG C, and oxygen enrichment percentage is 2~5%；When blast furnace process, 420~470kg/tFe of coke and coal dust is added
100~150kg/tFe.
10. described in any item high-grade blast-furnace smelting method for vanadium titano-magnetite according to claim 1~9, it is characterised in that: institute
[Ti] 0.1~0.3wt%, [Si] 0.1~0.3wt% are stated in molten iron；TiO in the clinker220~25wt%；The clinker
Basicity is 1.05~1.15.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110343796A (en) * | 2019-08-28 | 2019-10-18 | 攀钢集团攀枝花钢铁研究院有限公司 | The method for reducing vanadium titano-magnetite blast furnace process iron loss |
| CN115125389A (en) * | 2022-04-20 | 2022-09-30 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preparing vanadium-titanium sinter under smelting condition with high pellet ratio |
| CN115627307A (en) * | 2022-11-09 | 2023-01-20 | 四川德胜集团钒钛有限公司 | Blast furnace smelting method for vanadium titano-magnetite of high-proportion pellet ore |
| CN116200557A (en) * | 2022-12-28 | 2023-06-02 | 昆明工业职业技术学院 | Blast furnace smelting method of double-zero silicon high-vanadium molten iron |
| CN116200557B (en) * | 2022-12-28 | 2024-05-10 | 昆明工业职业技术学院 | Blast furnace smelting method of double-zero silicon high-vanadium molten iron |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101289697A (en) * | 2008-06-02 | 2008-10-22 | 攀钢集团攀枝花钢铁研究院有限公司 | Blast furnace ironmaking raw material and method for preparing same |
| CN101880765A (en) * | 2010-06-29 | 2010-11-10 | 攀钢集团钢铁钒钛股份有限公司 | Preparation method of high-titanium type vanadium-titanium magnetite agglomerate added with limonite |
| CN102732655A (en) * | 2011-04-13 | 2012-10-17 | 攀钢集团钢铁钒钛股份有限公司 | Blast furnace ironmaking method |
| CN104630449A (en) * | 2015-02-09 | 2015-05-20 | 东北大学 | Method for preparing sintered ore by using high-chromium-type vanadium-titanium mixture |
| CN104673951A (en) * | 2015-03-20 | 2015-06-03 | 攀钢集团西昌钢钒有限公司 | Blast furnace smelting method by using vanadium-titanium two-phase sintering ore |
| CN104762429A (en) * | 2015-04-16 | 2015-07-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Blast furnace smelting method |
| CN104878143A (en) * | 2015-06-18 | 2015-09-02 | 攀钢集团攀枝花钢铁研究院有限公司 | Blast furnace smelting method of vanadium titano-magnetite |
| CN107586903A (en) * | 2017-09-29 | 2018-01-16 | 四川德胜集团钒钛有限公司 | A kind of blast furnace process furnace charge and blast furnace smelting method |
-
2018
- 2018-08-13 CN CN201810915866.3A patent/CN108950111A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101289697A (en) * | 2008-06-02 | 2008-10-22 | 攀钢集团攀枝花钢铁研究院有限公司 | Blast furnace ironmaking raw material and method for preparing same |
| CN101880765A (en) * | 2010-06-29 | 2010-11-10 | 攀钢集团钢铁钒钛股份有限公司 | Preparation method of high-titanium type vanadium-titanium magnetite agglomerate added with limonite |
| CN102732655A (en) * | 2011-04-13 | 2012-10-17 | 攀钢集团钢铁钒钛股份有限公司 | Blast furnace ironmaking method |
| CN104630449A (en) * | 2015-02-09 | 2015-05-20 | 东北大学 | Method for preparing sintered ore by using high-chromium-type vanadium-titanium mixture |
| CN104673951A (en) * | 2015-03-20 | 2015-06-03 | 攀钢集团西昌钢钒有限公司 | Blast furnace smelting method by using vanadium-titanium two-phase sintering ore |
| CN104762429A (en) * | 2015-04-16 | 2015-07-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Blast furnace smelting method |
| CN104878143A (en) * | 2015-06-18 | 2015-09-02 | 攀钢集团攀枝花钢铁研究院有限公司 | Blast furnace smelting method of vanadium titano-magnetite |
| CN107586903A (en) * | 2017-09-29 | 2018-01-16 | 四川德胜集团钒钛有限公司 | A kind of blast furnace process furnace charge and blast furnace smelting method |
Non-Patent Citations (1)
| Title |
|---|
| 张增瑞 等: "钒钛磁铁矿球团氧化固结过程和物质成分变化", 《1988年炼铁学术年会论文集》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110343796A (en) * | 2019-08-28 | 2019-10-18 | 攀钢集团攀枝花钢铁研究院有限公司 | The method for reducing vanadium titano-magnetite blast furnace process iron loss |
| CN115125389A (en) * | 2022-04-20 | 2022-09-30 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preparing vanadium-titanium sinter under smelting condition with high pellet ratio |
| CN115627307A (en) * | 2022-11-09 | 2023-01-20 | 四川德胜集团钒钛有限公司 | Blast furnace smelting method for vanadium titano-magnetite of high-proportion pellet ore |
| CN116200557A (en) * | 2022-12-28 | 2023-06-02 | 昆明工业职业技术学院 | Blast furnace smelting method of double-zero silicon high-vanadium molten iron |
| CN116200557B (en) * | 2022-12-28 | 2024-05-10 | 昆明工业职业技术学院 | Blast furnace smelting method of double-zero silicon high-vanadium molten iron |
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Application publication date: 20181207 |