DE2006168A1 - De-phophorizing composn for iron or steel melts - Google Patents
De-phophorizing composn for iron or steel meltsInfo
- Publication number
- DE2006168A1 DE2006168A1 DE19702006168 DE2006168A DE2006168A1 DE 2006168 A1 DE2006168 A1 DE 2006168A1 DE 19702006168 DE19702006168 DE 19702006168 DE 2006168 A DE2006168 A DE 2006168A DE 2006168 A1 DE2006168 A1 DE 2006168A1
- Authority
- DE
- Germany
- Prior art keywords
- aggregate
- iron
- flux
- added
- melt
- 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
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 5
- 239000000161 steel melt Substances 0.000 title claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 11
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000010079 rubber tapping Methods 0.000 claims abstract description 5
- 235000013980 iron oxide Nutrition 0.000 claims abstract description 4
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims abstract description 3
- 229910001634 calcium fluoride Inorganic materials 0.000 claims abstract description 3
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 10
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims description 10
- 230000004907 flux Effects 0.000 claims description 9
- 239000000292 calcium oxide Substances 0.000 claims description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 7
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 6
- 235000013024 sodium fluoride Nutrition 0.000 claims description 5
- 239000011775 sodium fluoride Substances 0.000 claims description 5
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 238000010310 metallurgical process Methods 0.000 claims description 2
- 239000010436 fluorite Substances 0.000 claims 2
- 101100326791 Caenorhabditis elegans cap-2 gene Proteins 0.000 claims 1
- WETINTNJFLGREW-UHFFFAOYSA-N calcium;iron;tetrahydrate Chemical compound O.O.O.O.[Ca].[Fe].[Fe] WETINTNJFLGREW-UHFFFAOYSA-N 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
- C21C1/025—Agents used for dephosphorising or desulfurising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
- C21C7/0645—Agents used for dephosphorising or desulfurising
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Finely ground mixture of 30-60% CaO, 30-60% iron oxides, and 5-20% of a fluxing agent (pref. CaF2 or NaF) is added to iron or steel melt during or after tapping. This compsn has good de-phorphorising props characteristic of calcium ferrite, without needing any preliminary processing.
Description
Verfahren und Zuschlagatoff zur Entphosphorung von Eisen- und Stahlschmelzen.Process and additive for dephosphorization of iron and steel melts.
Die erfindung betrifft ein Verfahren und einen Zuschlagstiff zur Entphosphorung von Eisen- und Stahlschmelzen. Dabei eoll der Zuschlagstoff nach dem metallurgisoben Prozeß im Ofen oder konverter der Schmelze in der Pfanne zugegeben werden.The invention relates to a method and a surcharge for dephosphorization of iron and steel melts. Thereby the aggregate ought to be after the metallurgisoben Process in the furnace or converter to be added to the melt in the ladle.
Es ist bekannt, basische Zuschlagstoffe, wie CaO, Na2O3 oder Gemisoho aus beiden Stoffen als Mittel zur Entphosphorung einzusetzan. Diese Stoffe werden als Schlackenbildner während des Abstiches von Hand in die Pfanne geworfen oder injiziert. Weiterhin ist es bekannt, daß Kalziumferrite gute Entphosphorungseigenschaften besitzen. Diese Zuschlagstoffe müssen jedoch speziell aufbereitet werden, und zwar entweder pelletisiert oder fraktioniert werden, was mit einem erheblichen Kostenaufwand verbunden ist.It is known to use basic additives such as CaO, Na2O3 or Gemisoho to be used from both substances as a means for dephosphorization. These substances will thrown into the pan by hand as a slag former during tapping or injected. It is also known that calcium ferrites have good dephosphorization properties own. However, these aggregates must be specially prepared, namely either pelletized or fractionated, which is at a considerable cost connected is.
Der Srfindung liegt die Aufgabe zugrunde, diesen Nachteil der besonderen Aufbereitung zu überwinden.The invention is based on this disadvantage of the special Overcoming processing.
Diese Aufgabe wird dadurch gelöst, daß der Schmelze nach dem metallurgischen Prozeß ein Gemisch feiavermahlener Komponenten folgender Zusammensetzung zugegeben wird: 30 - 60 % Kalziumoxyd CaO 30 - 60 % Eisenoxyde FeO, Fe2O3, Fe3O4 5 - 20 ffi Flußmittel.This object is achieved in that the melt after the metallurgical Process a mixture of finely ground components of the following composition is added becomes: 30 - 60% calcium oxide CaO 30 - 60% iron oxides FeO, Fe2O3, Fe3O4 5 - 20 ffi Flux.
Gegenstand der Erfindung ist auch ein Zuschlagstoff der angegebenen Zusammensetzung.The invention also relates to an additive of the specified Composition.
Vorteilhafterweise sollte die Mahlfeinheit des Gemisches möglichst unter 100 µ liegen.Advantageously, the grinding fineness of the mixture should be as possible are below 100 µ.
Bei einer besonders vorteilhaften Zusammensetzung des Zuschlagstoffes bestcht das Flußmittel aus Flußopat CaF2. Auch Natriumfluorid NaF ist als Flußmittel geeignet.With a particularly advantageous composition of the aggregate The flux is made of Flußopat CaF2. Sodium fluoride NaF is also used as a flux suitable.
Der Zuschlagstofff kann der Schmelze während oder nach dem Abstich zugegeben werden. The aggregate can be added to the melt during or after tapping.
Claims (10)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702006168 DE2006168A1 (en) | 1970-02-11 | 1970-02-11 | De-phophorizing composn for iron or steel melts |
| BE762820A BE762820A (en) | 1970-02-11 | 1971-02-11 | METHOD OF DEPHOSPHORATION OF MELTED MASSES, AND ADDITIVE FOR THE IMPLEMENTATION OF SUCH A PROCESS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19702006168 DE2006168A1 (en) | 1970-02-11 | 1970-02-11 | De-phophorizing composn for iron or steel melts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2006168A1 true DE2006168A1 (en) | 1971-08-19 |
Family
ID=5761978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19702006168 Pending DE2006168A1 (en) | 1970-02-11 | 1970-02-11 | De-phophorizing composn for iron or steel melts |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE762820A (en) |
| DE (1) | DE2006168A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2522686A1 (en) * | 1982-03-03 | 1983-09-09 | Sumitomo Metal Ind | PROCESS FOR DEPHOSPHORIZING AND DESULFURIZING A FUSION IRON ALLOY CONTAINING CHROME |
| CN111411287A (en) * | 2020-03-13 | 2020-07-14 | 山西太钢不锈钢股份有限公司 | Slag remover for removing impurities of remelting non-vacuum Fe-based nanocrystalline alloy and use method thereof |
-
1970
- 1970-02-11 DE DE19702006168 patent/DE2006168A1/en active Pending
-
1971
- 1971-02-11 BE BE762820A patent/BE762820A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2522686A1 (en) * | 1982-03-03 | 1983-09-09 | Sumitomo Metal Ind | PROCESS FOR DEPHOSPHORIZING AND DESULFURIZING A FUSION IRON ALLOY CONTAINING CHROME |
| CN111411287A (en) * | 2020-03-13 | 2020-07-14 | 山西太钢不锈钢股份有限公司 | Slag remover for removing impurities of remelting non-vacuum Fe-based nanocrystalline alloy and use method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| BE762820A (en) | 1971-07-16 |
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