DE1863633U - ARC FURNACE FOR MELTING SCRAP METAL. - Google Patents

Description

tnsriOH - GARBIBB OOHPOBATIOH, Few'Yprt17, Η, Υ », USA

Moiitliogenöfsn sum SehmeXsen von metal scrap

The present! Firing looks at an arc furnace sram smelting iron scrap with electrodes that can be lowered onto the smelting material through the Deekenwanäung, a side-mounted observation flap © and a burner for generating one of several pre-watering flanamen in dea Bey-eieb between the 'clLen un & öem

It is therefore a main feature of the present heating, the speed and the temperature of the coincidence? τοη initial aid ^ · heat sum scrap is - © iaea; electric furnace, su increase _? bevo the Schmelsstrom 2e.it fam _s melting the Schrotts- to

When training electric ovens. 1st - it. he? # ünsoli1; _s flls electrodes derart-, ansuo-rdnen * "that a uniform SGhz-z? .t ~ schmelsgesohwiniigkeit in Jansen oven ss twiddles? wircU Dignity \ ndessen the ideal Elektrodentaeisdurehmeeser _angeweadst? u .this gleichmäBige Schrottniederaohmelsen au verwirklicfeeiis"'' would look a übermäßiger- Sehaden ergefeen on the fire-resistant Auskleiduijg-. the furnace side walls due to the IAHE the Blektroden on the walls ,, Saher it is common practice to _9. Elektroäenkreisduröhmesser "fele, iner to ha3.ten _P as% p ü®m Xdealwert- However ent "speaks _o This compromise ^ -ergibt ein'Verhältnismäßig langsaiaes melting of Söhrotts to the" walls and Badräiidern

to the usual

along? compared. with the area near the electrodes * Such slow selection of the scrap along the walls now again extends the length of the down arm and increases the possibility of electrode breakage as a result of vxm "vigor in the door or - •» hollowing out To a great extent = moreover can ₉ if 'the'n'n'n'n'gssohmölsene-scrap hangs in protruding edges along the walls waä in a late warm-up time in the bathroom _? Unexpected as well as undesirable "changes in the metal composition occur,

Only recently "have practical methods been developed _? To improve the scrap iron in.-electric arc furnace % n ." In one of these? Processes, oxygen from a view! _{Of jet devices 9} which are inserted into the furnace applications? Is fed into the surface of the electric furnace. Schrottniedereciimelsimg _represent? directed by oils exothermic heat of reaction swischesi'.dem oxygen and the preheated scrap to AEEN kühleren'ringförmigen area between the electrodes and the "wall, is ,. Boöli has this knock down and kill the Fachtell _s äaß it only in operation "effectiveness can be gebracht- _s when the SoJarott berslta enough" preheated lst ₉₁₁₁ with the Saueretoff in "Baal. Tion occur su '

They arrangement on the circumference "" befindlicher _s with a ßasgemiBclx of oxygen - and a fuel "!" Operated Flammeneraeuger gave a wirksaißes means au'r überwinäiang "BSI the lierwendung of Sauerstoffetrahlvorrichtungen 'occurring laughing partly _β

The task of the Heue'ruag is to facilitate the supply of heating energy to the section Ses nlederausehmelsgnden

(lutes-? where heating is most necessary is ο this is done in a row by the fact that a burner protrudes through the opening of the Sesshickimgsklsppe? which is held swiveling by a clamp and is adjustable in a floor stand Tertikai adjustable? and rotatably mounted «-Suren The "new usgsgeia" formation of a © SioJifbögeaofens often applies to smaller furnaces, the Terwencteg and the burner in all of them

ρ Further details of the fire result from the following description, in the Susasime annex with the

Ss

Figure 1 shows a longitudinal section through a Haöhmerischungs «=

burner with an inner oxyfiiergasiranal and '' - a 'änBenen fuel gas ring channel for use in the new arc furnace.,. '* · -

ligur "2 a rupture of a band in Sigur 1 Brenner $ ...'-. '■

Pigur 3 a section through the electric furnace .geiiarf der ITeue ^ Hng with the burner - according to ligi "1 mad £""nd ^v . '" ■ ""

Figure 4 'a floor plan of the Sigur 3 · Teranschanlichtexi furnace *

As shown in Figure 1, oxygen flows dnreli a mean pipe tO- made of a material such as s-, Β »stainless steel«, the si oh aur application ait oxygen. at increased f@mpsi?a.tur eig «

Fuel gas flows through the pipe 10 between the middle oxygen and a concentric one. Outer tube 15 formed opening space 12 iiiii & back _{o this} arrangement can ₉ · if desired, iron

a water jacket -asig-yellow s.eia _s in which a constant cooling water "serf! -ass bit help of the ring-shaped water inlet canal ti of the ring-shaped water & outlet channel 15 e As the drawing shows? is training äes burner © DAS that oxygen tube 10 sur Heiiiigung top loading = · be removed fcann ₉ to di © estuary should infolgs of Schlackenspritsern during Of enb® drive susetssen. " The Bren ner of fconsentrisclien MiscMyps lead ₉ - wis festgestellt- sn susgezeichaeten results ₉ was particularly with regard ö © r I ¹ IaSMSBStSMIitat well as respect d © s Greränsches _s when she turns scrap "in the electric furnace sum ¥ ieders'chjsiei2en- of '

In Alsace, ovens with Psssuagsvernögen and efficient conduct from less than about 10 suns. extends into the "most cases a eintüzdger burner j to reach all scrap in the furnace when @r ifährenä the Sehroitnie & erschmalsmiig one or more times by the - door umgelagert- or _{umgeriehtei;?!"} As mentioned above ₉ can this burner is water-cooled

Installation of a ^ Urbreaneus is relatively einfa.ch _P there.

Only © s, required is ₈ the torch fesch a Jiöok isi the ϊϋϊ ⁰ through äaß so absuetütsens "it can be set up in. Gs'wilnsoiiter manner && m scrap swisehen d®2? Electrode und.-the furnace wall ^ as illustrated "öemäB dea? .- Mgur 3, the burner" sweckentsprechend characterized aisgeetütgt _s werd®n maa that it in a simple bar holder 18 attaches to the ₅ o "ben to, on the one pipe" column 20 is disposed of 5 cm in diameter and ₉ su one

Base on the side of the. For can be swung down- :. The bracket should eiae height adjustment and a swivel joint with such a design that the burner have _p "comfortable and can be easily sealed to the scrap.""- -

Stir electric ovens with a 'capacity and'. siner "performance sound IÖ to 200 suns or more proved to be" the use of three or more "of the -Wandbrejinern ■ ireranschau * = · 3 loved! yps _ninth used hinduroh in the furnace wall by BuröhtritiöffnuHgen? highly effective brauehbarj -um Begebnisse zn. ergielen _s application. wasBörgekühlteii of Brea ^ · Hernstein the lotwendigkeit separate DureatrittMililer eliminated _ö How i'igo 4 seigt _P the burners are tangentially in. wall like that. angeordnet2 that 'they die! larane something down in one. Hichtimg between the electrode and the wall-directing "The wall passage openings" exist in the. essentially made of tubular steel sleeves that are just big enough to accommodate the burners _e . The Xweck of Stahlhülsendiirclitritts .is _a removal _of: Brenner gu "-erleichtern" if a Instsndsetsung the burner or the furnace lining are required should, "How look from dea -2eich" nuhgen further ergi "bt _f are ■" di @ .. Brenner on each side exercises cut- off • stichschnauae νοη the tapping side "as far as Btoglic ^. s arranged ₉ to insert the burner m. TS.rhiaderai _? "• Furnaces is .gekippt during tapping ο All burners w - '. -Oea .abwärts at an angle tob et ^ a .15 sur Eoriaontalen ge ~ s"' ^ directed to a Schro.ttberiihrung as long as possible to allow «. . .- ,. V = -

Under different operating conditions, savings of between 14-30 fs in the electrical energy required for lowering and between 15 and 50 fs were achieved with "the new runge".

Claims (1)

Claim to protection Arc furnace total smelting iron scrap with electrodes ₉ , which are lowered through the basin wall onto the smelting material, a side cover and a burner for creating one or more yorwärwäracungsflaiDmen in the "liberation oh between the electrodes and the furnace shell _s characterized "that through an opening of a burner Beseliiulmagekiappe (Hg _0% UNAE 2) _r protrudes which. vertically pivotable by a clamp (18) held and vertically adjustable in a Boäeaständer (20) as well. rotatably mounted - is =