Chifukwa chiyani ma electrode a graphite amagwiritsidwa ntchito? Ubwino ndi zolakwika za graphite electrode

Elekitirodi ya graphite ndi gawo lofunikira la EAFsteelmaking, koma imangotengera kachigawo kakang'ono ka mtengo wopangira zitsulo. Zimatengera 2 kg ya electrode ya graphite kuti ipange tani yachitsulo.

Chifukwa chiyani ma electrode a graphite amagwiritsidwa ntchito?

Graphite electrode ndiye cholumikizira chachikulu cha ng'anjo ya arc. Ma EAF ndi njira yosungunulira zinyalala zamagalimoto akale kapena zida zapanyumba kuti apange zitsulo zatsopano.
Mtengo wopangira ng'anjo yamagetsi yamagetsi ndi yotsika poyerekeza ndi ng'anjo yachikhalidwe. Zotentha zachikale zimapanga chitsulo kuchokera ku chitsulo ndipo amagwiritsa ntchito malasha akukokera ngati mafuta. Komabe, mtengo wopangira zitsulo ndi wokwera kwambiri ndipo kuipitsa chilengedwe ndizovuta kwambiri. Komabe, EAF AMAGWIRITSA NTCHITO zitsulo ndi magetsi, zomwe sizimakhudza chilengedwe.
Elekitirodi ya graphite imagwiritsidwa ntchito kusonkhanitsa ma elekitirodi ndi chivundikiro cha ng'anjo yonse, ndipo electrode ya graphite imatha kuyendetsedwa mmwamba ndi pansi. Pakali pano amadutsa mu electrode, kupanga arc yotentha kwambiri yomwe imasungunula zitsulo zowonongeka. Ma elekitirodi amatha kukhala mpaka 800mm (2.5ft) m'mimba mwake mpaka 2800mm (9ft) m'litali. Kulemera kwakukulu kumapitilira matani awiri.

Kugwiritsa ntchito ma electrode a graphite

Pamafunika 2 kilogalamu (4.4 mapaundi) a maelekitirodi a graphite kuti apange tani yachitsulo.

Kutentha kwa electrode ya graphite

Nsonga ya elekitirodi idzafika madigiri 3,000 Celsius, theka la kutentha kwa dzuŵa. Elekitirodi imapangidwa ndi graphite, chifukwa graphite yokha imatha kupirira kutentha kotereku.
Kenako tembenuzani ng'anjoyo kumbali yake ndikutsanulira zitsulo zosungunukazo mu migolo ikuluikulu. Kenako ladleyo imakapereka zitsulozo ku mpheroyo, zomwe zimasandutsa zitsulo zokonzedwanso kukhala zatsopano.

Graphite electrode imagwiritsa ntchito magetsi

Ntchitoyi ikufuna magetsi okwanira kuti apereke mphamvu m'tauni ya anthu 100,000. Mng'anjo yamakono yamagetsi yamagetsi, kusungunuka kulikonse kumatenga mphindi 90 ndipo kumatha kupanga matani 150 achitsulo, okwanira kupanga magalimoto 125.

Zopangira

Needle coke ndiye chopangira chachikulu cha maelekitirodi, omwe amatenga miyezi itatu kapena isanu ndi umodzi kuti apange. Njirayi imaphatikizapo kuwotcha ndi kubwezeretsanso kuti coke ikhale graphite, wopanga adati.
Pali singano yopangidwa ndi petroleum coke ndi coke ya singano ya malasha, zonse zomwe zingagwiritsidwe ntchito kupanga ma electrode a graphite. "Pet coke" ndi mankhwala opangidwa ndi mafuta a petroleum, pamene malasha-to-coke amapangidwa kuchokera ku phula la malasha lomwe limapezeka panthawi yopanga coke.