Kuyamba kwa Graphite electrode

Electrode ya graphiteamagwiritsidwa ntchito makamaka mu EAF steelmaking. Electric ng'anjo steelmaking ndi kugwiritsa ntchito graphite elekitirodi kuyambitsa zamakono mu ng'anjo. Mphamvu yamakono imatulutsa arc kutulutsa kudzera mu gasi kumapeto kwa electrode, ndipo kutentha kopangidwa ndi arc kumagwiritsidwa ntchito posungunulira. Malinga ndi mphamvu ya ng'anjo yamagetsi, ma electrode a graphite okhala ndi ma diameter osiyanasiyana amagwiritsidwa ntchito. Kuti ma elekitirodi azigwiritsidwa ntchito mosalekeza, ma electrode amalumikizidwa ndi cholumikizira cha electrode. Theelectrode ya graphitepakupanga zitsulo ndi 70-80% ya kuchuluka kwa electrode ya graphite. 2. Amagwiritsidwa ntchito mu ng'anjo yamagetsi yamagetsi. Makhalidwe ake ndikuti gawo lapansi la electrode conductive limayikidwa m'manda. Choncho, kuwonjezera pa kutentha komwe kumapangidwa ndi arc pakati pa mbale yamagetsi ndi chiwongoladzanja, kutentha kumapangidwanso ndi kukana kwa chiwongoladzanja pamene panopa chikudutsa pamtengowo. 3, Graphitization ng'anjo, ng'anjo yosungunula magalasi ndi ng'anjo yamagetsi yopangira zinthu za graphite ndi ng'anjo zotsutsa. Zida zomwe zili mu ng'anjo sizimangotentha zokha, komanso zimatenthetsa chinthu. Kawirikawiri, conductive graphite elekitirodi ndi anaikapo mu ng'anjo mutu khoma kumapeto kwa moto, choncho conductive elekitirodi si kudyedwa mosalekeza.

Minda yofunsira:

(1) Amagwiritsidwa ntchito mu ng'anjo yamagetsi ya arc steelmaking, yomwe imagwiritsidwa ntchito kwambirielectrode ya graphite. Ku China, kutulutsa kwachitsulo kwa EAF kumakhala pafupifupi 18% ya zitsulo zosapangana, ndipo ma elekitirodi a graphite akupanga zitsulo ndi 70% ~ 80% yazomwe zimagwiritsidwa ntchito ndi electrode ya graphite. Electric ng'anjo steelmaking ndi ntchito graphite elekitirodi kuyambitsa panopa mu ng'anjo, ndi ntchito kutentha kutentha gwero kwaiye arc pakati pa mapeto a elekitirodi ndi mlandu kuti smelting.

2) Amagwiritsidwa ntchito mu ng'anjo ya arc yomira; anamira arc ng'anjo zimagwiritsa ntchito kupanga mafakitale pakachitsulo ndi chikasu phosphorous, etc. amadziwika kuti m'munsi mwa elekitirodi conductive m'manda mu mlandu, kupanga arc mu mlandu wosanjikiza, ndi Kutenthetsa mlandu pogwiritsa ntchito kutentha mphamvu. zopangidwa ndi kukana kwa mlandu wokha. ng'anjo yomira pansi pamadzi yokhala ndi kachulukidwe kakang'ono kamakono ikufunika ma elekitirodi a graphite, mwachitsanzo, pafupifupi 100kg graphite elekitirodi imafunika pa 1t iliyonse yopanga silikoni, ndipo pafupifupi 100kg graphite elekitirodi imafunika pa 1t iliyonse yopanga silikoni Pafupifupi 40 kg ya elekitirodi ya graphite imafunika pa t yachikasu. phosphorous.

(3) Amagwiritsidwa ntchito ngati ng'anjo yolimbana ndi moto; ng'anjo ya graphitization yopangira zinthu za graphite, ng'anjo yopangira magalasi osungunuka ndi ng'anjo yamagetsi yopangira silicon carbide zonse ndi za ng'anjo yotsutsa. Zipangizo mu ng'anjo zonse kutentha kukana ndi kutentha chinthu. Nthawi zambiri, ma elekitirodi a graphite amayikidwa pakhoma la ng'anjo yamoto kumapeto kwa ng'anjo yotsutsa, ndipo ma elekitirodi a graphite omwe amagwiritsidwa ntchito pano sadyedwa mosalekeza.

(4) Amagwiritsidwa ntchito pokonzekera mwapaderamankhwala a graphite; chosoweka cha graphite elekitirodi amagwiritsidwanso ntchito pokonza zinthu zosiyanasiyana zapadera zooneka ngati graphite monga crucible, nkhungu, mbale bwato ndi kutentha thupi. Mwachitsanzo, mu makampani opanga magalasi a quartz, 10t graphite electrode yopanda kanthu imafunika pa chubu chilichonse chosungunuka chamagetsi cha 1t; 100kg graphite elekitirodi yopanda kanthu imafunika pa njerwa iliyonse ya 1t quartz.