Claims (11)
1. Uređaj za proizvodnju metalnih ingota pomoću postupka elektrolučnog pretaljivanja pod troskom, koji ima metalurški aktivnu kupku troske i peć za predgrijavanje (1) za predgrijavanje barem jednog vrha (14) potrošne elektrode (13) koja se treba postaviti u kupku troske,
naznačen time da je peć za predgrijavanje (1) opremljena u području izgaranja (6) tako da, u radnom stanju peći za predgrijavanje (1), prima vrh (14) potrošne elektrode (13), s barem jednim uređajem za uvođenje (9, 10) za gorivo i oksidant, te je navedeni uređaj izveden tako da se gorivo i/ili oksidant uvode tangencijalno u područje izgaranja (6) peći za predgrijavanje (1).1. A device for the production of metal ingots using the slag remelting process, which has a metallurgically active slag bath and a preheating furnace (1) for preheating at least one tip (14) of a consumable electrode (13) to be placed in the slag bath,
characterized in that the preheating furnace (1) is equipped in the combustion area (6) so that, in the operating state of the preheating furnace (1), it receives the tip (14) of the consumable electrode (13), with at least one introduction device (9, 10) for fuel and oxidant, and the mentioned device is designed so that fuel and/or oxidant are introduced tangentially into the combustion area (6) of the preheating furnace (1).
2. Uređaj prema zahtjevu 1, naznačen time da su uređaji za uvođenje (9, 10) raspoređeni pod kutom, promatrano u aksijalnom smjeru, s njihovim otvorom za pražnjenje nagnutim prema vrhu (14) potrošne elektrode (13).2. Device according to claim 1, characterized in that the introduction devices (9, 10) are arranged at an angle, viewed in the axial direction, with their discharge opening inclined towards the top (14) of the consumable electrode (13).
3. Uređaj prema zahtjevu 1 ili 2, naznačen time da su uređaji za uvođenje, opremljeni plamenicima (9, 10) koji imaju barem jedan dovod za gorivo barem jedan dovod za oksidant.3. Device according to claim 1 or 2, characterized in that the introduction devices are equipped with burners (9, 10) that have at least one fuel inlet and at least one oxidizer inlet.
4. Uređaj u skladu s jednim od prethodnih zahtjeva, naznačen time da su u krajnjem dijelu (3) peći za predgrijavanje (1) raspoređeni višestruki plamenici (9, 10), poželjno u pravilnim kutnim razmacima.4. Device according to one of the previous claims, characterized in that multiple burners (9, 10) are arranged in the end part (3) of the preheating furnace (1), preferably at regular angular intervals.
5. Uređaj u skladu s jednim od prethodnih zahtjeva, naznačen time da je plamenik ili plamenici (9, 10) postavljen u stjenku peći za predgrijavanje (1) tako da se može podesiti u smislu duljine i/ili kutnog položaja.5. Device according to one of the previous claims, characterized in that the burner or burners (9, 10) is placed in the wall of the preheating furnace (1) so that it can be adjusted in terms of length and/or angular position.
6. Uređaj u skladu s jednim od prethodnih zahtjeva, naznačen time da je krajnji dio (3) peći za predgrijavanje (1) opremljen poklopcem (4) kako bi se spriječilo prodiranje u atmosferu peći.6. Device according to one of the preceding claims, characterized in that the end part (3) of the preheating furnace (1) is equipped with a cover (4) to prevent penetration into the furnace atmosphere.
7. Uređaj u skladu s jednim od prethodnih zahtjeva, naznačen time da ima sustav za ispušne plinove (12, 18) radi reguliranja tlaka u peći.7. Device according to one of the previous claims, characterized in that it has a system for exhaust gases (12, 18) to regulate the pressure in the furnace.
8. Postupak za proizvodnju metalnih ingota pomoću postupka elektrolučnog pretaljivanja pod troskom, u kojem se potrošna elektroda (13) predgrijava, te se potom spušta s vrhom (14) u metalurški aktivnu kupku troske,
pri čemu se predgrijavanje potrošne elektrode (13), prije dovođenja potonje u kupku troske, provodi djelovanjem na barem vrh (14) potrošne elektrode (13) pomoću mješavine goriva i oksidansa koji međusobno reagiraju,
naznačen time da se vrh (14) potrošne elektrode (13) predgrijava oblikovanjem plamenskog ciklona koji okružuje vrh (14).8. Process for the production of metal ingots using the process of electric arc remelting under slag, in which the consumable electrode (13) is preheated, and then it is lowered with the tip (14) into the metallurgically active slag bath,
whereby the preheating of the consumable electrode (13), before bringing the latter into the slag bath, is carried out by acting on at least the tip (14) of the consumable electrode (13) using a mixture of fuel and oxidants that react with each other,
characterized by the fact that the tip (14) of the consumable electrode (13) is preheated by forming a flame cyclone that surrounds the tip (14).
9. Postupak prema zahtjevu 8, naznačen time da se tijekom predgrijavanja, vrh (14) potrošne elektrode (13) zagrijava na temperaturu između 100°C točke taljenja materijala potrošne elektrode, poželjno između 900°C i 1400°C.9. The method according to claim 8, characterized in that during preheating, the tip (14) of the consumable electrode (13) is heated to a temperature between 100°C of the melting point of the material of the consumable electrode, preferably between 900°C and 1400°C.
10. Postupak prema zahtjevu 8 ili 9, naznačen time da se omjer goriva prema oksidansu i/ili sadržaju kisika u oksidansu mijenja ili regulira tijekom predgrijavanja10. The method according to claim 8 or 9, characterized in that the ratio of fuel to oxidant and/or oxygen content in the oxidant is changed or regulated during preheating
11. Postupak prema jednom od zahtjeva 8-10, naznačen time da je izgaranje goriva bez plamena.11. The method according to one of claims 8-10, characterized in that the fuel combustion is flameless.