LU85408A1 - Pig iron dephosphorisation with potassium cpd. - giving slag suitable for fertiliser prodn. - Google Patents
Pig iron dephosphorisation with potassium cpd. - giving slag suitable for fertiliser prodn. Download PDFInfo
- Publication number
- LU85408A1 LU85408A1 LU85408A LU85408A LU85408A1 LU 85408 A1 LU85408 A1 LU 85408A1 LU 85408 A LU85408 A LU 85408A LU 85408 A LU85408 A LU 85408A LU 85408 A1 LU85408 A1 LU 85408A1
- Authority
- LU
- Luxembourg
- Prior art keywords
- potassium
- pig iron
- cpd
- dephosphorisation
- fertiliser
- Prior art date
Links
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 title claims abstract description 4
- 229910052700 potassium Inorganic materials 0.000 title claims abstract description 4
- 239000011591 potassium Substances 0.000 title claims abstract description 4
- 229910000805 Pig iron Inorganic materials 0.000 title claims abstract 4
- 239000002893 slag Substances 0.000 title abstract description 5
- 239000003337 fertilizer Substances 0.000 title abstract description 4
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims abstract description 3
- 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
- 229940072033 potash Drugs 0.000 claims abstract description 3
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims abstract description 3
- 235000015320 potassium carbonate Nutrition 0.000 claims abstract description 3
- 230000004907 flux Effects 0.000 claims abstract 2
- 239000000126 substance Substances 0.000 claims description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 5
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 5
- 239000004571 lime Substances 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims 1
- 239000007789 gas Substances 0.000 claims 1
- 229910019142 PO4 Inorganic materials 0.000 abstract description 2
- 230000003472 neutralizing effect Effects 0.000 abstract description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 abstract 1
- 239000011575 calcium Substances 0.000 abstract 1
- 229910052791 calcium Inorganic materials 0.000 abstract 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 abstract 1
- 239000010452 phosphate Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- -1 fluoride compound Chemical class 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 150000003109 potassium Chemical class 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 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
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)
Abstract
Description
\P Esvencication ce la priorité d'une demande “ V de brevet déposée en Belgique le 10 juin 1S83 j _sous le no. 6/47.836_\ P Esvencication ce the priority of an application “V of patent filed in Belgium on June 10, 1883 j _sous no. 6 / 47.836_
Brevet d'invention C 2250/8306.Invention patent C 2250/8306.
CENTRE DE RECHERCHES METALLURGIQUES -" CENTRUM VOOR RESEARCH XN DE METALLURGIE,METALLURGICAL RESEARCH CENTER - "CENTRUM VOOR RESEARCH XN DE METALLURGIE,
Association sans but lucratif -Vereniging zonder winstoogmerk à BRUXELLES, (Belgique) .Non-profit association -Vereniging zonder winstoogmerk in BRUXELLES, (Belgium).
Procédé de déphosphoration de fonte liquide.Liquid iron dephosphorization process.
La présente invention concerne un procédé de déphosphoration de la fonte, applicable notamment dans un récipient tel qu'une poche-torpille.The present invention relates to a process for dephosphorizing cast iron, applicable in particular in a container such as a torpedo bag.
On connaît déjà de nombreux procédés de déphosphoration de la fonte liquide, tant en poche que dans le convertisseur d'affinage.Numerous processes are already known for dephosphorizing liquid iron, both in the ladle and in the refining converter.
La plupart des procédés connus à ce jour consistent à utiliser v de la soude industrielle, à savoir du carbonate de sodium pour assurer cette déphosphoration.Most of the methods known to date consist in using industrial soda, namely sodium carbonate to ensure this dephosphoration.
Ces procédés connus donnent des résultats satisfaisants sur le plan purement technique, mais ils présentent un important inconvénient d'ordre économique.These known methods give satisfactory results from a purely technical point of view, but they have a significant economic disadvantage.
]L· Γ * ί - 2 -] L · Γ * ί - 2 -
En effet, le prix de revient de la soude est élevé et il convient de la traiter pour la récupérer et la recycler, ce qui i entraîne des frais supplémentaires.Indeed, the cost price of soda is high and it should be treated to recover and recycle it, which i involves additional costs.
î La présente invention a pour objet un procédé gui permet de re- t | médier à cet inconvénient.The subject of the present invention is a method which makes it possible to retire | mediate this inconvenience.
ï A cet effet, le procédé qui fait l'objet de la présente invention est essentiellement caractérisé en ce que l'on utilise un | agent déphosphorant constitué principalement d'au moins une v substance dérivée du potassium.For this purpose, the process which is the subject of the present invention is essentially characterized in that a | dephosphorizing agent consisting mainly of at least one substance derived from potassium.
**
Parmi les substances utilisables, on peut citer notamment, par ! ordre de préférence, le carbonate K2CC>3, l'oxyde K20 et le chlo rure KCl; cette liste n'est toutefois pas limitative et il ne sortirait pas du cadre de l'invention d'utiliser un ou plusieurs il autres dérivés du potassium, seul ou en mélange.Among the substances which can be used, mention may in particular be made of! preferably, carbonate K2CC> 3, oxide K20 and chloride KCl; this list is however not exhaustive and it would not depart from the scope of the invention to use one or more other potassium derivatives, alone or as a mixture.
kj j I Selon une modalité de mise en oeuvre intéressante, on utilise un agent déphosphorant contenant en outre au moins une substance à base de chaux, par exemple de la chaux proprement dite, de la ferrite de chaux ou un mélange de chaux et d'oxyde de fer.kj j I According to an advantageous implementation method, a dephosphorizing agent is used which also contains at least one lime-based substance, for example lime itself, lime ferrite or a mixture of lime and iron oxide.
1' . Egalement suivant l'invention, on ajoute au dit agent déphos- jri phorant un fondant, de préférence un composé fluoré tel que j ~ CaF2 OU NaF' 4 *1 b r Toujours selon l'invention, on insuffle un gaz oxydant, de pré- férence de l'oxygène industrie Usinent pur, ce façon à créer un | milieu oxydant qui favorise la déphosphoration.1 '. Also according to the invention, a fluxing agent, preferably a fluorinated compound such as j ~ CaF2 OR NaF '4 * 1 br, is also added to the said dephosizing agent, preferably a fluoride compound. industry ference pure machine, this to create a | oxidizing medium which promotes dephosphoration.
La scorie obtenue par le procédé de déphosphoration conforme a 1'invention contient des phosphates et de la potasse.The slag obtained by the dephosphorization process according to the invention contains phosphates and potash.
β ' ‘ - 3 - Λ mβ '‘- 3 - Λ m
Elle peut donc trouver un débouché très intéressant dans la fabrication des engrais. Son intérêt pour cette utilisation est encore accru par le fait qu'elle présente une très forte action neutralisante.It can therefore find a very interesting outlet in the manufacture of fertilizers. Its interest in this use is further increased by the fact that it has a very strong neutralizing action.
Lorsque l'on envisage d'utiliser la scorie pour la fabrication d’engrais, il convient toutefois de limiter la quantité de gaz oxydant insufflé, afin de ne pas provoquer l'oxydation du manganèse. Celui-ci passerait en effet dans la scorie sous forme d'oxyde MnO^# ce qui appauvrirait le bain métallique en man- ' Γ“.......When considering the use of slag for the manufacture of fertilizers, it is however advisable to limit the quantity of oxidizing gas blown, so as not to cause the oxidation of manganese. This would indeed pass into the slag in the form of oxide MnO ^ # which would deplete the metal bath by man- 'Γ “.......
Claims (5)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE6047836 | 1983-06-10 | ||
| BE6047836 | 1983-06-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU85408A1 true LU85408A1 (en) | 1984-11-30 |
Family
ID=3874928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU85408A LU85408A1 (en) | 1983-06-10 | 1984-06-07 | Pig iron dephosphorisation with potassium cpd. - giving slag suitable for fertiliser prodn. |
Country Status (1)
| Country | Link |
|---|---|
| LU (1) | LU85408A1 (en) |
-
1984
- 1984-06-07 LU LU85408A patent/LU85408A1/en unknown
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