Claims (11)
Naprava in postopek za pretaljevanje elektro-žlindre Patentni zahtevkiDevice and process for removing electro-slag Patent claims
1. Naprava ta izdelavo kovinskih ingotov z uporabo postopka pretaljevanja elektro žlindre, ki vsebuje metalurško aktivno kopel žlindre in predgrelno peč (1) za predgrevanje vsaj ene konice (14) potrošne elektrode (13), ki bo dovedena v kopel žlindre, značilna po tem, daje predgrelna peč (1), v področju zgorevanja (6), opremljena tako, da v stanju delovanja predgrelne peči (1) sprejme konico (14) potrošne elektrode (13), z vsaj eno napravo (9,10) za dovajanje goriva in oksidanta, kjer je omenjena naprava nameščena tako, da sta omenjena gorivo in oksidant dovedena tangencialno na področje zgorevanja (6) predgrelne peči (1).A device for producing metal ingots using an electro-slag refluxing process comprising a metallurgically active slag bath and preheating furnace (1) for preheating at least one tip (14) of the consuming electrode (13) to be brought into the slag bath, characterized in that , a preheating furnace (1) is provided in the combustion area (6) in such a way that, in the state of operation of the preheating furnace (1), the tip (14) of the consuming electrode (13) is received, with at least one fuel delivery device (9,10) and an oxidant, wherein said device is arranged such that said fuel and oxidant are brought tangentially to the combustion region (6) of the preheating furnace (1).
2. Naprava po zahtevku 1, značilna po tem, da so naprave (9, 10) za dovajanje nameščene pod kotom, gledano v osni smeri, tako, da so njihove izstopne odprtine nagnjene proti konici (14) potrošne elektrode (13).Device according to claim 1, characterized in that the feeding devices (9, 10) are arranged at an angle viewed in the axial direction, so that their outlet openings are inclined towards the tip (14) of the consumable electrode (13).
3. Naprava po zahtevku 1 ali 2, značilna po tem, da kot naprave (9, 10) za dovajanje vsebuje gorilnike (9, 10), od katerih ima vsak vsaj en dovod za gorivo in vsaj en dovod za oksidant.Apparatus according to claim 1 or 2, characterized in that it includes burners (9, 10), as feed devices (9, 10), each of which has at least one fuel inlet and at least one inlet for the oxidant.
4. Naprava po kateremkoli predhodnem zahtevku, značilna po tem, da je množica gorilnikov (9, 10) nameščeno v vsaki sekciji delu (3) predgrelne peči (1), prednostno na enakomernih kotnih razdaljah.Apparatus according to any one of the preceding claims, characterized in that a plurality of burners (9, 10) are positioned in each section of the preheating furnace (1) part (3), preferably at even angular distances.
5. Naprava po enem izmed predhodnih zahtevkov, značilna po tem, da so gorilnik ali gorilniki (9, 10) nameščeni v steni predgrelne peči (1) tako, da so nastavljivi po dolžini in/ali kotnem položaju.Device according to one of the preceding claims, characterized in that the burner or burners (9, 10) are positioned in the wall of the preheating furnace (1) so that they are adjustable in length and / or angular position.
6. Naprava po enem izmed predhodnih zahtevkov, značilna po tem, daje končna sekcija (3) predgrelne peči (1) opremljena s pokrovom (4), da preprečimo vstop ambientnega ozračja.Device according to one of the preceding claims, characterized in that the final section (3) of the preheating furnace (1) is provided with a cover (4) to prevent the entry of the ambient atmosphere.
7. Naprava po enem izmed predhodnih zahtevkov, značilna po izpušnem sistemu (12,18) za uravnavanje tlaka peči.Device according to one of the preceding claims, characterized by an exhaust system (12, 18) for regulating the pressure of the furnace.
8. Postopek izdelave kovinskih ingotov s pretaljevanjem kovin z elektro žlindro, v katerem je potrošna elektroda (13) predgreta in nato s konico (14) spuščena v metalurško aktivno kopel žlindre, kjer je predgrevanje potrošne elektrode (13), preden jo spustimo v kopel žlindre, izvedeno z delovanjem na vsaj eno konico (14) potrošne elektrode (13), z uporabo mešanice goriva in oksidanta, ki medsebojno reagirata, značilen po tem, da konico (14) potrošne elektrode (13) predgrejemo s tvorbo ciklona plamena, ki obkroža konico (14).A process for the production of metal ingots by remelting metal with an electro slag in which the consumable electrode (13) is preheated and then sprayed with a tip (14) into a metallurgically active bath of slag, wherein the preheating of the consumable electrode (13) is before it is lowered into the bath slag made by operation to at least one spike (14) of the consumable electrode (13) using a mixture of fuel and an oxidant interacting with one another, characterized in that the tip (14) of the consuming electrode (13) is preheated by forming a flame cyclone surrounds the tip (14).
9. Postopek po zahtevku 8, značilen po tem, da je med predgrevanjem, konica (14) potrošne elektrode (13) segreta na 100°C in je točka taljenja materiala potrošne elektrode (13) prednostno med 800°C in 1400°C.Method according to claim 8, characterized in that during preheating, the tip (14) of the consuming electrode (13) is heated to 100 ° C and the melting point of the consuming electrode material (13) is preferably between 800 and 1400 ° C.
10. Postopek po zahtevku 8 ali 9, značilen po tem, da se razmerje vsebnosti goriva proti vsebnosti oksidanta in/ali kisika, tekom predgrevanja spreminja ali uravnava.A method according to claim 8 or 9, characterized in that the ratio of the fuel content to the oxidant and / or oxygen content is changed or regulated during preheating.
11. Postopek po kateremkoli zahtevku od 8 do 10, značilen po tem, da zgorevanje goriva poteka brez plamena.A method according to any one of claims 8 to 10, characterized in that the combustion of fuel is carried out without flame.