AT35423B - Process for the treatment of hot charges in the basic Bessemer pear. - Google Patents
Process for the treatment of hot charges in the basic Bessemer pear.Info
- Publication number
- AT35423B AT35423B AT35423DA AT35423B AT 35423 B AT35423 B AT 35423B AT 35423D A AT35423D A AT 35423DA AT 35423 B AT35423 B AT 35423B
- Authority
- AT
- Austria
- Prior art keywords
- pear
- treatment
- basic bessemer
- lime
- hot
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 4
- 235000014443 Pyrus communis Nutrition 0.000 title claims 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 8
- 239000000203 mixture Substances 0.000 description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 5
- 235000011941 Tilia x europaea Nutrition 0.000 description 5
- 235000013980 iron oxide Nutrition 0.000 description 5
- 239000004571 lime Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 235000011116 calcium hydroxide Nutrition 0.000 description 2
- 238000005261 decarburization Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Description
<Desc/Clms Page number 1>
EMI1.1
EMI1.2
<Desc/Clms Page number 2>
Entkohhmgspcriode oder später ein Gemisch von eisenoxydhaltigen Stoffen und Kalkhydrái zugesetzt. Man verwendet vorteilhaft Stoffe, wie Walzsinter, Hammerschlag u. dgl. und presst die Mischung am besten zu Ziegeln.
EMI2.1
in die Bime gebracht hat. Auch hat man am Ende der Entkohlung Eisenoxyde und Kalk zugesetzt. Jedenfalls hat man aber Kalk und nicht Kali-hydrant zugesetzt und hat nicht angegeben, dass eine brikettierte Mischung der beiden Stoffe Kalk und Eisenoxyd benutzt werden sollte.
Die Mischung von Kalkhydrat und Eisenoxyd gegen Ende der Entkohlung oder später zugesetzt hat eine überraschend günstige Wirkung : sie beendigt die Oxydation des Phosphors in auffällig kurzer Zeit und man braucht den Wind nur noch einige Sekunden durch das Bad zu schicken, worauf die Charge fertig ist. Besonders günstig ist hierbei die Wirkung des Kalkhydrates. Durch Zersetzung dieser Verbindung wird dem phosphorhaltigen Eisenbad eben an derjenigen Stelle sehr rasch Wärme entzogen, wo eine Entphosphorung der Eisenoxyde der Mischung vor sich gehen soll, und wird eben an derselben Stelle chemisch reiner Kalk erzeugt, welcher im Molekularzustande die entphosphorende Wirkung auf ein Maximum bringt. Durch das Zusetzen der Eisenoxyd-Kalkhydrat-Mischung wird ein Teil des Phosphors endotherm oxydiert.
Die Vorteile des Verfahrens sind bedeutend :
1. Der Abbrand wird vermindert ; 2. Der Kalk-verbrauch ermässigt ; 3. Der Phosphorsäuregehalt der Schlacke steigt :
4. Die Blasezeit wird abgekürzt ;
5. Der Dampfverbrauch verringert.
Während des Nachblasens ist die Temperatur am höchsten und es wird eine Schlacke gebildet. welche leicht Dolomitmasse löst. Da durch das Verfahren die Dauer der Entphosphorung erheblich abgekürzt wird, so muss 6, Die Haltbarkeit der Converterausmaueruug und der Böden steigen.
<Desc / Clms Page number 1>
EMI1.1
EMI1.2
<Desc / Clms Page number 2>
Entkohhmgspcriode or later a mixture of iron oxide-containing substances and Kalkhydrái added. It is advantageous to use substances such as roll sintering, hammer blow and. Like. And best presses the mixture into bricks.
EMI2.1
brought into the Bime. Iron oxides and lime were also added at the end of the decarburization. In any case, lime and not potash hydrant were added and it was not stated that a briquetted mixture of the two substances lime and iron oxide should be used.
The mixture of hydrated lime and iron oxide added towards the end of decarburization or later has a surprisingly beneficial effect: it stops the oxidation of the phosphorus in a remarkably short time and you only need to send the wind through the bath for a few seconds, after which the batch is ready. The action of the hydrated lime is particularly beneficial. By decomposing this compound, heat is very quickly withdrawn from the phosphorus-containing iron bath at the point where dephosphorization of the iron oxides in the mixture is supposed to take place, and chemically pure lime is produced at the same point, which in its molecular state brings the dephosphorizing effect to a maximum . By adding the iron oxide-hydrated lime mixture, part of the phosphorus is oxidized endothermically.
The advantages of the procedure are significant:
1. The burn-off is reduced; 2. Lime consumption is reduced; 3. The phosphoric acid content of the slag increases:
4. The bubble time is shortened;
5. The steam consumption is reduced.
The temperature is highest during post-blowing and a slag is formed. which easily dissolves dolomite mass. Since the process considerably shortens the duration of the dephosphorization, the durability of the converter lining and the floors must increase.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT35423T | 1906-07-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT35423B true AT35423B (en) | 1908-12-10 |
Family
ID=3551942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT35423D AT35423B (en) | 1906-07-20 | 1906-07-20 | Process for the treatment of hot charges in the basic Bessemer pear. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT35423B (en) |
-
1906
- 1906-07-20 AT AT35423D patent/AT35423B/en active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AT35423B (en) | Process for the treatment of hot charges in the basic Bessemer pear. | |
| ES418299A1 (en) | Q-bop vessel construction | |
| DE197591C (en) | ||
| DE1408860A1 (en) | Process for the production of spheroidal graphite cast iron | |
| AT37905B (en) | Process for the treatment of hot charges in the basic Bessemer pear. | |
| DE2149023C3 (en) | Process for refining pig iron rich in phosphorus | |
| AT162863B (en) | Process for the manufacture of nitrogen-containing ferro alloys | |
| GB1495821A (en) | Method of refining steel | |
| GB822271A (en) | Improvements in or relating to the manufacture of steel | |
| AT48935B (en) | Process for the production of an immediately usable cement from highly basic blast furnace slag. | |
| DE895301C (en) | Use of iron powder for the production of sintered bodies | |
| DE210809C (en) | ||
| AT207396B (en) | Process for the production of steel in the converter | |
| AT78783B (en) | Process for the production of low-phosphorus ferromanganese, mirror or pig iron from phosphorus-rich and manganese-containing ores, slags and the like. | |
| GB1037079A (en) | Improved process of steelmaking by the use of a converter with oxygen-enriched blast | |
| DE904052C (en) | Process for the dephosphorization of steel | |
| DE710396C (en) | Process for the preparation of cyano compounds of the pyridine series | |
| DE422030C (en) | Process for reducing poor oolitic iron ores | |
| GB190809554A (en) | Improvements in or connected with the Manufacture of Iron or Steel by the Basic Bessemer Process. | |
| DE911022C (en) | Process for the production of steel in the basic wind-freshening process with lateral wind feed | |
| DE2350995C3 (en) | Process for refining pig iron rich in phosphorus | |
| DE90879C (en) | ||
| DE851808C (en) | Process for the preparation of a manganese-phosphoric acid dueners | |
| DE904543C (en) | Process for the production of steel | |
| DE497501C (en) | Procedure for extinguishing coke |