CN1834264A - Additive of removing impurities in molten metal - Google Patents
Additive of removing impurities in molten metal Download PDFInfo
- Publication number
- CN1834264A CN1834264A CN 200610045887 CN200610045887A CN1834264A CN 1834264 A CN1834264 A CN 1834264A CN 200610045887 CN200610045887 CN 200610045887 CN 200610045887 A CN200610045887 A CN 200610045887A CN 1834264 A CN1834264 A CN 1834264A
- Authority
- CN
- China
- Prior art keywords
- additive
- aluminium
- calcium carbide
- calcium
- lime
- 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.)
- Granted
Links
- 239000000654 additive Substances 0.000 title claims abstract description 44
- 230000000996 additive effect Effects 0.000 title claims abstract description 43
- 239000012535 impurity Substances 0.000 title claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 8
- 239000002184 metal Substances 0.000 title claims abstract description 8
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000003723 Smelting Methods 0.000 claims abstract description 8
- ULGYAEQHFNJYML-UHFFFAOYSA-N [AlH3].[Ca] Chemical compound [AlH3].[Ca] ULGYAEQHFNJYML-UHFFFAOYSA-N 0.000 claims description 22
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 17
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 17
- 239000004571 lime Substances 0.000 claims description 17
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 15
- 239000010436 fluorite Substances 0.000 claims description 15
- 239000001095 magnesium carbonate Substances 0.000 claims description 9
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 9
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 9
- 229960001708 magnesium carbonate Drugs 0.000 claims description 9
- 235000014380 magnesium carbonate Nutrition 0.000 claims description 9
- 239000010959 steel Substances 0.000 abstract description 27
- 229910000831 Steel Inorganic materials 0.000 abstract description 26
- 229910052782 aluminium Inorganic materials 0.000 abstract description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 13
- 239000005997 Calcium carbide Substances 0.000 abstract description 12
- 229910000851 Alloy steel Inorganic materials 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- RGKMZNDDOBAZGW-UHFFFAOYSA-N aluminum calcium Chemical compound [Al].[Ca] RGKMZNDDOBAZGW-UHFFFAOYSA-N 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 13
- 239000004411 aluminium Substances 0.000 description 11
- 238000002360 preparation method Methods 0.000 description 10
- 238000005303 weighing Methods 0.000 description 10
- 238000013467 fragmentation Methods 0.000 description 9
- 238000006062 fragmentation reaction Methods 0.000 description 9
- 238000002156 mixing Methods 0.000 description 9
- 238000003756 stirring Methods 0.000 description 9
- 239000000843 powder Substances 0.000 description 8
- 239000002893 slag Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000006477 desulfuration reaction Methods 0.000 description 4
- 238000002161 passivation Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical class O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 150000004645 aluminates Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
This invention relates to an additive for removing impurities in molten metals, which is composed of aluminum calcium particles 10-90 wt.% and passivated calcium carbide 10-90 wt.%. Adding the additive when smelting steel or steel alloys can save 15% of aluminum and protect the lining of stell ladles, thus greatly reducing the manufacturing.
Description
Technical field:
The present invention relates to the interpolation treatment agent of impurity such as interior oxygen of a kind of molten metal that is used to remove, particularly molten state steel and sulphur.
Background technology:
Metal smelting as the process of utilizing the converter smelting steel in, contain nonmetallic impuritys such as a large amount of oxide compounds and sulfide in the molten steel of its molten state usually, if these impurity are not removed the quality that can seriously influence steel.
Because aluminium is close stone oxyphilic element, aluminium becomes oxide compound, hydride and exists with oxygen containing aluminate form in the occurring in nature multiform, for this reason, and in tapping process, usually in the molten steel of molten state, add a large amount of aluminium or aluminium alloy, to change out the oxygen element in the molten steel.But, because the price of aluminium is higher relatively, and in switching process, can generate aluminium sesquioxide, and aluminium sesquioxide can influence the quality of steel equally, so in the process of smelting steel, adopt aluminum or aluminum alloy can not reach the ideal effect as reductor.
The name of No. 1142297 Granted publications of Chinese patent is called " composite molten steel refining additive ", and this is a solution that proposes for addressing the above problem.This patent is a kind of additive that adopts aluminium ash, metallurgical slag, calcium carbide, Wingdale, witherite to constitute.Its meaning is to want to utilize materials such as aluminium ash and calcium carbide to the polynary complex deoxidization of molten steel, desulfurization, can also promote to add simultaneously slag making materials dissolving and slagging rapidly.But because calcium carbide is easy and the water effect generates acetylene gas, i.e. suction back efflorescence was lost efficacy, so this additive must be preserved in encloses container or packing material, this packaging means can cause the raising of its cost; Simultaneously, this additive adopts the aluminium ash of some amount, and the aluminium ash is loose little grainy material, can not play the effect of condensing and promoting its come-up to the impurity in the molten steel, and the aluminium sesquioxide of its generation can influence the quality of steel equally.
In addition, the name of No. 1210414 Granted publications of Chinese patent is called the solution that has disclosed another kind of type in " ladle deoxidation, desulfurization with the preparation method of blowing powder ".This patent adopts lime powder and calcium carbide powder to mix and through Passivation Treatment, the deoxidization desulfuration rate obviously improves, and the pulvis cost can reduce significantly.Though calcium carbide powder after the Passivation Treatment and lime powder help preserving, but, can simple cohesion and the come-up of using lime powder and these two kinds of raw materials of calcium carbide powder can not promote impurity in the molten steel equally await further to inquire into so use this kind blowing powder reach ideal deoxidization desulfuration effect.
Summary of the invention:
Task of the present invention provides a kind of utilization and can impel the mode of cohesion of impurity in the molten steel and come-up to improve impurity-eliminating effect, can also prevent the additive of the removal impurities in molten metal of hydrolysis simultaneously effectively.
The additive of removal impurities in molten metal proposed by the invention comprises that weight quota is respectively the aluminium calcium grain of 10%--90% and the deactivated calcium carbide of 10%--90%.Having the characteristic that surface tension is big and viscosity is suitable after aluminium calcium grain (promptly being 12 calcium, 7 aluminium) melts in molten steel, is again a kind of low-melting material simultaneously, can condense the inclusion in the molten steel in large quantities, and impel inclusion floating, is very beneficial for the purification of molten steel; The fusing point of calcium carbide is higher, do not melt in the time of in putting it into molten steel, can have only ability and slag generation chemical reaction when floating to the molten steel interface on it, and calcium carbide can nakedly not deposited at least more than 20 days through after the Passivation Treatment in the molten steel because of the adding carburetting of calcium carbide.
Described aluminium calcium grain is the product after bauxitic ore and the Wingdale electric smelting, and its molecular formula is: 12CaO7Al
2O
3
Also contain fluorite and lime in the described additive, the weight quota of its each component is respectively: aluminium calcium grain 20%--50%, deactivated calcium carbide 10%--55%, fluorite 5%--20%, lime 20%--40%.Add fluorite in the additive and can impel slag to flow, and slag can make its chemical reaction more thorough in process of flowing.
Also contain the magnesiumcarbonate that weight quota is 2%--10% in the described additive.Can generate a large amount of carbon dioxides after magnesiumcarbonate melts in molten steel, molten steel is had stirring action, can further promote in the molten steel impurity come-up, and the magnesium oxide that produced of reaction back also has provide protection to the liner of ladle.
The weight quota of each component is respectively in the described additive: aluminium calcium grain 20%--40%, deactivated calcium carbide 10%--50%, fluorite 5%--20%, lime 20%--40%, magnesiumcarbonate 2%--10%.
When additive proposed by the invention is used to smelt steel or Steel Alloy, can save the aluminium about 15%, the liner to ladle also has provide protection simultaneously, can reduce its production cost and maintenance cost significantly; In addition, by the aluminium calcium grain that the electric smelting mode obtains, dioxide-containing silica is less than 3%, so this additive can not influence the quality of steel when saving aluminium in it.
Embodiment:
Embodiment 1:
At first take by weighing an amount of bauxitic ore and Wingdale, and (its molecular formula is: 12CaO7Al to utilize the electric smelting mode to make aluminium calcium grain
2O
3); Then with the calcium carbide fragmentation, recycle silicon oil or the silicone oil after the dilution of alcohols material carry out Passivation Treatment to the calcium carbide surface, make this additive after taking by weighing the deactivated calcium carbide of the aluminium calcium grain of 10Kg and 90Kg and thorough mixing at last.Because the composition and the content of impurity are incomplete same in molten state molten steel or the slag, so, the content of each composition that constitutes this additive is also incomplete same, in the weight proportion as this additive, also can adopt the aluminium calcium grain of 90Kg and the deactivated calcium carbide of 10Kg, perhaps with aluminium calcium grain and deactivated calcium carbide according to 1: the weight ratio preparation of 0.5-2.5.
Embodiment 2:
The additive of pre-preparation 100Kg, at first produce aluminium calcium grain 20Kg and deactivated calcium carbide 55Kg according to the method for embodiment 1, take by weighing fluorite 5Kg and lime 20Kg after the fragmentation simultaneously, then will described four kinds of materials make this additive after by the mode thorough mixing that stirs.
Embodiment 3:
The additive of pre-preparation 100Kg, at first produce aluminium calcium grain 50Kg and deactivated calcium carbide 10Kg according to the method for embodiment 1, take by weighing fluorite 20Kg and lime 20Kg after the fragmentation simultaneously, then will described four kinds of materials make this additive after by the mode thorough mixing that stirs.
Embodiment 4:
The additive of pre-preparation 100Kg, at first produce aluminium calcium grain 20Kg and deactivated calcium carbide 20Kg according to the method for embodiment 1, take by weighing fluorite 20Kg and lime 40Kg after the fragmentation simultaneously, then will described four kinds of materials make this additive after by the mode thorough mixing that stirs.
Embodiment 5:
The additive of pre-preparation 100Kg, at first produce aluminium calcium grain 30Kg and deactivated calcium carbide 35Kg according to the method for embodiment 1, take by weighing fluorite 10Kg and lime 25Kg after the fragmentation simultaneously, then will described four kinds of materials make this additive after by the mode thorough mixing that stirs.
Embodiment 6:
The additive of pre-preparation 100Kg, at first produce aluminium calcium grain 24Kg and deactivated calcium carbide 30Kg according to the method for embodiment 1, take by weighing fluorite 8Kg and lime 32Kg after the fragmentation simultaneously, and magnesiumcarbonate 6Kg, then will described five kinds of materials make this additive after by the mode thorough mixing that stirs.
Embodiment 7:
The additive of pre-preparation 100Kg, at first produce aluminium calcium grain 24Kg and deactivated calcium carbide 40Kg according to the method for embodiment 1, take by weighing fluorite 6Kg and lime 26Kg after the fragmentation simultaneously, and magnesiumcarbonate 4Kg, then will described five kinds of materials make this additive after by the mode thorough mixing that stirs.
Embodiment 8:
The additive of pre-preparation 100Kg, at first produce aluminium calcium grain 30Kg and deactivated calcium carbide 25Kg according to the method for embodiment 1, take by weighing fluorite 8Kg and lime 30Kg after the fragmentation simultaneously, and magnesiumcarbonate 7Kg, then will described five kinds of materials make this additive after by the mode thorough mixing that stirs.
Embodiment 9:
The additive of pre-preparation 100Kg, at first produce aluminium calcium grain 40Kg and deactivated calcium carbide 15Kg according to the method for embodiment 1, take by weighing fluorite 12Kg and lime 30Kg after the fragmentation simultaneously, and magnesiumcarbonate 3Kg, then will described five kinds of materials make this additive after by the mode thorough mixing that stirs.
Claims (5)
1, be used to remove the additive of impurities in molten metal, it is characterized in that: this additive comprises that weight quota is respectively the aluminium calcium grain of 10%--90% and the deactivated calcium carbide of 10%--90%.
2, additive according to claim 1 is characterized in that: described aluminium calcium grain is the product after bauxitic ore and the Wingdale electric smelting, and its molecular formula is: 12CaO7Al
2O
3
3, additive according to claim 1, it is characterized in that: also contain fluorite and lime in the described additive, the weight quota of its each component is respectively: aluminium calcium grain 20%--50%, deactivated calcium carbide 10%--55%, fluorite 5%--20%, lime 20%--40%.
4, according to claim 1 or 3 described additives, it is characterized in that: also contain the magnesiumcarbonate that weight quota is 2%--10% in the described additive.
5, additive according to claim 4 is characterized in that: the weight quota of each component is respectively in the described additive: aluminium calcium grain 20%--40%, deactivated calcium carbide 10%--50%, fluorite 5%--20%, lime 20%--40%, magnesiumcarbonate 2%--10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100458871A CN100389210C (en) | 2006-02-23 | 2006-02-23 | Additive of removing impurities in molten metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100458871A CN100389210C (en) | 2006-02-23 | 2006-02-23 | Additive of removing impurities in molten metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1834264A true CN1834264A (en) | 2006-09-20 |
| CN100389210C CN100389210C (en) | 2008-05-21 |
Family
ID=37002161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100458871A Expired - Fee Related CN100389210C (en) | 2006-02-23 | 2006-02-23 | Additive of removing impurities in molten metal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100389210C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009149581A1 (en) * | 2008-06-12 | 2009-12-17 | 鞍钢股份有限公司 | Additive for preparing steel containning super-finely dispersed oxide, producing method and application of the same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63195208A (en) * | 1987-02-06 | 1988-08-12 | Shiyouyou Shoji Kk | Production of granular desulfurizing agent for molten iron and molten steel |
| JP2004263285A (en) * | 2003-03-04 | 2004-09-24 | Nippon Steel Corp | Molten steel desulfurizing agent, desulfurizing method and method for producing calcium aluminate source |
-
2006
- 2006-02-23 CN CNB2006100458871A patent/CN100389210C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009149581A1 (en) * | 2008-06-12 | 2009-12-17 | 鞍钢股份有限公司 | Additive for preparing steel containning super-finely dispersed oxide, producing method and application of the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100389210C (en) | 2008-05-21 |
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| SE01 | Entry into force of request for substantive examination | ||
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Granted publication date: 20080521 Termination date: 20110223 |