1. IZINTO EZILUHLAZA
I-Coke (cishe u-75-80% kokuqukethwe)
I-Petroleum Coke
I-petroleum coke iyimpahla eluhlaza ebaluleke kakhulu, futhi yakheka ezinhlobonhlobo zezakhiwo, kusukela ku-anisotropic yenaliti coke kuya cishe ku-isotropic fluid coke.I-anisotropic yenaliti coke, ngenxa yesakhiwo sayo, ibalulekile ekwenzeni ama-electrode asebenza kahle kakhulu asetshenziswa ezithandweni zikagesi ze-arc, lapho kudingeka khona izinga eliphezulu kakhulu lokuthwala umthwalo kagesi, wemishini kanye nokushisa.I-petroleum coke icishe ikhiqizwe ngokukhethekile inqubo yokupheka ebambezelekile, okuyindlela yokufaka i-carboning ethambile yezinsalela zikawoyela ongahluziwe.
I-needle coke igama elivame ukusetshenziswa ohlotsheni olukhethekile lwe-coke olunokuhleleka okuphezulu kakhulu okubangelwa ukuma okuqinile okuncanyelwayo okuhambisanayo kwesakhiwo sesendlalelo se-turbostratic kanye nesimo esithile somzimba sezinhlamvu.
Izibophezelo (cishe u-20-25% kokuqukethwe)
Indawo yetiyela yamalahle
Ama-binding agents asetshenziselwa ukuhlanganisa izinhlayiya eziqinile komunye nomunye.Ikhono labo lokumanzisa eliphakeme ngaleyo ndlela liguqula ingxube ibe yisimo sepulasitiki ukuze sibunjwe noma sikhishwe ngokulandelayo.
I-Coal tar pitch iyinhlanganisela yezinto eziphilayo futhi inesakhiwo esinephunga elihlukile.Ngenxa yengxenye yayo ephezulu yezindandatho ze-benzene ezishintshiwe futhi ezijingisiwe, isivele inesakhiwo se-graphite esine-hexagonal esakheke ngaphambili, ngaleyo ndlela yenza kube lula ukwakheka kwezizinda ze-graphite ezihlelwe kahle ngesikhathi sokuthwebula.I-pitch ikhombisa ukuthi iyisibopho esinenzuzo kakhulu.Yinsalela yokukhishwa kwetiyela yamalahle.
2. UKUHLANGANISA NOKUKHIPHA
I-coke egayiwe ixutshwa ne-coal tar pitch kanye nezinye izithasiselo zokwenza inhlama efanayo.Lokhu kulethwa ku-cylinder extrusion.Esinyathelweni sokuqala umoya kufanele ususwe ngokucindezela kusengaphambili.Kunesinyathelo sangempela se-extrusion silandela lapho ingxube ikhishwa khona ukuze yakhe i-electrode yobubanzi obufunwayo nobude.Ukuvumela ukuhlanganisa futhi ikakhulukazi inqubo ye-extrusion (bona isithombe ngakwesokudla) ingxube kufanele ibe yi-viscous.Lokhu kufinyelelwa ngokuyigcina ezingeni lokushisa eliphakeme elingu-approx.120°C (kuye ngokuthi iphimbo) phakathi nayo yonke inqubo yokukhiqiza eluhlaza.Leli fomu eliyisisekelo elinesimo se-cylindrical laziwa ngokuthi "i-electrode eluhlaza".
3. UKUBHAKA
Kusetshenziswa izinhlobo ezimbili zeziko lokubhaka:
Lapha izinduku ezikhishiwe zifakwe kuma-cylindrical stainless steel canisters (ama-saggers).Ukuze ugweme ukuguqulwa kwama-electrode ngesikhathi sokushisa, ama-saggers abuye agcwaliswe ngesembozo sokuvikela sesihlabathi.Amasaga alayishwa ezinkundleni zesitimela (ezinqenqemeni zemoto) futhi agingqelwa kugesi yemvelo - iziko abashisiwe.
Isithando somlilo
Lapha ama-electrode abekwe endaweni evalekile yamatshe ngaphansi kwehholo lokukhiqiza.Lesi sikhala siyingxenye yesistimu yendandatho yamakamelo angaphezu kwe-10.Amakamelo axhunywe kanye nohlelo lokujikeleza komoya oshisayo ukuze konge amandla.Ama-voids phakathi kwama-electrode nawo agcwele isihlabathi ukugwema ukuguquguquka.Ngesikhathi sokubhaka, lapho i-pitch i-carbonized, izinga lokushisa kufanele lilawulwe ngokucophelela ngoba emazingeni okushisa afinyelela ku-800 ° C ukwakheka kwegesi okusheshayo kungabangela ukuqhekeka kwe-electrode.
Kulesi sigaba ama-electrode anomthamo ozungeze 1,55 - 1,60 kg/dm3.
4. UKUKHULELWA
Ama-electrode abhakiwe ahlanganiswe ne-pitch ekhethekile (i-liquid pitch ku-200 ° C) ukuze anikeze ukuminyana okuphezulu, amandla okusebenza, kanye nokuhamba kukagesi azodinga ukumelana nezimo ezinzima zokusebenza ngaphakathi kwezithando.
5. UKUBHAKA KABUSHA
Umjikelezo wesibili wokubhaka, noma "ukubhaka kabusha," uyadingeka ukuze kufakwe umoya we-pitch impregnation futhi kuxoshwe noma yikuphi ukuguquguquka okusele.Izinga lokushisa lokubhaka kabusha lifinyelela cishe ku-750 ° C.Kulesi sigaba ama-electrode angafinyelela ukuminyana cishe ku-1,67 - 1,74 kg/dm3.
6. UKUGQIBELA
I-Acheson Furnace
Isinyathelo sokugcina sokwenziwa kwe-graphite ukuguqulwa kwekhabhoni ebhakiwe ibe yi-graphite, ebizwa ngokuthi i-graphitizing.Phakathi nenqubo ye-graphitizing, ikhabhoni e-odwe ngaphambili engaphezulu noma engaphansi (i-turbostratic carbon) iguqulwa ibe isakhiwo se-graphite esinezinhlangothi ezintathu.
Ama-electrode apakishwe ezithandweni zikagesi ezizungezwe yizinhlayiya zekhabhoni ukuze akhe inqwaba eqinile.Ugesi udlula esithandweni, ukhuphule izinga lokushisa lifinyelele cishe ku-3000°C.Le nqubo ivamise ukufezwa kusetshenziswa ISITHANDO SE-ACHESON noma ISIBUSE ESIDE (LWG).
Ngesithando somlilo se-Acheson ama-electrode afakwa nge-graphitized kusetshenziswa inqubo ye-batch, kuyilapho esithandweni somlilo se-LWG yonke ikholomu i-graphitized ngesikhathi esifanayo.
7. UKUSHIYA
Ama-electrode e-graphite (emva kokupholisa) afakwa ngomshini ukuze abe nobukhulu obuqondile nokubekezelelana.Lesi sigaba singase futhi sifake ukwenza imishini kanye nokufaka iziphetho (izisekelo) zama-electrode ngephini lokuhlanganisa le-graphite (ingono) elinentambo.
Isikhathi sokuthumela: Apr-08-2021