CN102433399A - Blast furnace flux and application thereof - Google Patents
Blast furnace flux and application thereof Download PDFInfo
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- CN102433399A CN102433399A CN2012100057829A CN201210005782A CN102433399A CN 102433399 A CN102433399 A CN 102433399A CN 2012100057829 A CN2012100057829 A CN 2012100057829A CN 201210005782 A CN201210005782 A CN 201210005782A CN 102433399 A CN102433399 A CN 102433399A
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- furnace flux
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Abstract
The invention relates to a blast furnace flyx and application thereof, belongs to the technical field of metallurgy, and is used for solving the technical problem of providing a blast furnace flux capable of reducing the use amount of coke. The blast furnace flux comprises the following components in parts by weight: 4-16 parts of SiO2, 1-10 parts of Al2O3, 5-20 parts of Fe2O3, 5-30 parts of FeO, 2-20 parts of MgO, 20-60 parts of CaO and 1-50 parts of MFe.
Description
Technical field
The present invention relates to blast furnace flux and uses thereof, belong to metallurgical technology field.
Background technology
During smelting iron and steel, because the needs of blast furnace slag making, the normal fusing assistant that adds some amount is called for short flux in the blast-furnace burden.Its objective is and make refractory oxide (SiO in the gangue
21713 ℃, Al
2O
32570 ℃ of 2050 ℃, CaO) generate low melting component, form the slag of good fluidity, reach the purpose that slag iron separates and remove detrimental impurity.
Different according to gangue in the ore with the fuel ash composition, and the requirement of smelting pig iron kind and quality, the flux that blast furnace uses has the Wingdale (CaCO of alkalescence
3), rhombspar [(Ca, Mg) CO
3]; Tart silica (SiO
2).Also have double as to contain the forsterite and the serpentine of MgO and acidic flux, and the fluorite (CaF that uses of prepurging
2) etc.And the application of Wingdale can bring heat exhaustion, produce CO
2Water down problems such as reducing atmosphere and coke ratio rising.
Summary of the invention
Technical problem to be solved by this invention provides a kind of blast furnace flux that can reduce the coke consumption.
Blast furnace flux of the present invention contains the component of following weight proportion: SiO
24～16 parts, Al
2O
31～10 part, Fe
2O
35～20 parts, 5～30 parts of FeO, 2～20 parts of MgO, 20～60 parts of CaO, 1～50 part of MFe (MFe is a free iron, the meaning of metallic iron simple substance).
Wherein, blast furnace flux of the present invention can also contain≤10 parts MnO and MnO content＞0 by weight ratio.
Wherein, blast furnace flux of the present invention preferably is made up of the component of following weight proportion: SiO
24～16 parts, Al
2O
31～10 part, Fe
2O
35～20 parts, 5～30 parts of FeO, 2～20 parts of MgO, 20～60 parts of CaO, MFe1～50 part, 0～10 part of MnO.
Further, in order to improve the result of use of blast furnace flux of the present invention, the particle diameter of described blast furnace flux is preferably 10～150mm.
Blast furnace flux of the present invention can be crushed to each component mixing by weight ratio 10～150mm and get final product after the fusion.In use, one ton of molten iron adding 50～800kg blast furnace flux of the present invention of every smelting gets final product.
Wherein, Because bessemer furnace slag contains most of component of blast furnace flux of the present invention, therefore, it is that main raw material prepares that blast furnace flux of the present invention also can adopt bessemer furnace slag; So not only can solve the recycling problem of bessemer furnace slag, can also cut down the consumption of energy, improve iron output.
Wherein, the present invention also provides the purposes of blast furnace flux of the present invention as slag former.
The alternative lime masonry of blast furnace flux of the present invention flux is produced iron and steel per ton and can be reduced coke consumption 5～150kg, can also increase pig iron output 1%～10%; In addition; Blast furnace flux of the present invention can also substitute rhombspar, and silicon oxide and aluminum oxide use as slag former, further reduce production costs.The present invention has broad application prospects for this area provides a kind of new blast furnace flux.
Embodiment
Blast furnace flux of the present invention contains the component of following weight proportion: SiO
24～16 parts, Al
2O
31～10 part, Fe
2O
35～20 parts, 5～30 parts of FeO, 2～20 parts of MgO, 20～60 parts of CaO, 1～50 part of MFe (MFe is a free iron, the meaning of metallic iron simple substance).
Wherein, blast furnace flux of the present invention can also contain≤10 parts MnO and MnO content＞0 by weight ratio.
Wherein, blast furnace flux of the present invention preferably is made up of the component of following weight proportion: SiO
24～16 parts, Al
2O
31～10 part, Fe
2O
35～20 parts, 5～30 parts of FeO, 2～20 parts of MgO, 20～60 parts of CaO, MFe1～50 part, 0～10 part of MnO.
Further, in order to improve the result of use of blast furnace flux of the present invention, the particle diameter of described blast furnace flux is preferably 10～150mm.
Blast furnace flux of the present invention can be crushed to each component mixing by weight ratio 10～150mm and get final product after the fusion.In use, one ton of molten iron adding 50～800kg blast furnace flux of the present invention of every smelting gets final product.
Wherein, Because bessemer furnace slag contains most of component of blast furnace flux of the present invention, therefore, it is that main raw material prepares that blast furnace flux of the present invention also can adopt bessemer furnace slag; So not only can solve the recycling problem of bessemer furnace slag, can also cut down the consumption of energy, improve iron output.
Wherein, the present invention also provides the purposes of blast furnace flux of the present invention as slag former.
Do further description below in conjunction with the embodiment specific embodiments of the invention, therefore do not limit the present invention among the described scope of embodiments.
Embodiment adopts blast furnace flux of the present invention at the blast-furnace smelting pig iron
5 stove blast furnaces are added blast furnace flux of the present invention respectively smelt that (smelting process is ordinary method; The chemical ingredients of blast furnace flux of the present invention is as shown in table 1; The complete utilization proportioning is seen table 2 in blast furnace, and the numbering 1-5 in the table 1 is corresponding with the furnace charge batch 1-5 difference in the table 2), calculate the amount of coke of the heat 6,7 that does not add blast furnace flux of the present invention, the MV of iron output; Compare with amount of coke, the iron output of the heat 1-5 that adds blast furnace flux of the present invention, the result is as shown in table 3.
The chemical ingredients (weight part) of table 1 blast furnace flux of the present invention
The proportioning (wt%) of table 2 blast furnace flux of the present invention complete utilization in blast furnace
The test effect that table 3 blast furnace flux of the present invention utilizes in blast furnace
Annotate: the volume of above-mentioned blast furnace is 100m
3
Claims (5)
1. blast furnace flux is characterized in that containing the component of following weight proportion: SiO
24～16 parts, Al
2O
31～10 part, Fe
2O
35～20 parts, 5～30 parts of FeO, 2～20 parts of MgO, 20～60 parts of CaO, MFe1～50 part.
2. blast furnace flux according to claim 1 is characterized in that: also contain by weight ratio≤10 parts MnO and MnO content＞0.
3. blast furnace flux is characterized in that being made up of the component of following weight proportion: SiO
24～16 parts, Al
2O
31～10 part, Fe
2O
35～20 parts, 5～30 parts of FeO, 2～20 parts of MgO, 20～60 parts of CaO, MFe1～50 part, 0～10 part of MnO.
4. according to each described blast furnace flux of claim 1～3, it is characterized in that: the particle diameter of described blast furnace flux is 10～150mm.
5. each described blast furnace flux of claim 1～4 is as the purposes of slag former.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100057829A CN102433399A (en) | 2012-01-09 | 2012-01-09 | Blast furnace flux and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100057829A CN102433399A (en) | 2012-01-09 | 2012-01-09 | Blast furnace flux and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102433399A true CN102433399A (en) | 2012-05-02 |
Family
ID=45981745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100057829A Pending CN102433399A (en) | 2012-01-09 | 2012-01-09 | Blast furnace flux and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102433399A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270403A (en) * | 2008-05-20 | 2008-09-24 | 济南济钢铁合金厂 | Slugging fluxing agent of steel-smelting revolving furnace |
| CN101768654A (en) * | 2009-12-29 | 2010-07-07 | 攀枝花钢城集团有限公司 | Blocking agent of molten iron desulphurization slag, preparation method and use thereof |
-
2012
- 2012-01-09 CN CN2012100057829A patent/CN102433399A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101270403A (en) * | 2008-05-20 | 2008-09-24 | 济南济钢铁合金厂 | Slugging fluxing agent of steel-smelting revolving furnace |
| CN101768654A (en) * | 2009-12-29 | 2010-07-07 | 攀枝花钢城集团有限公司 | Blocking agent of molten iron desulphurization slag, preparation method and use thereof |
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| PB01 | Publication | ||
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Application publication date: 20120502 |