1. IZINTO EZIQAQWAYO
I-Coke (malunga ne-75-80% kumxholo)
Petroleum Coke
I-petroleum coke yeyona nto ibalulekileyo ekrwada, kwaye yenziwa kuluhlu olubanzi lwezakhiwo, ukusuka kwinaliti ene-anisotropic kakhulu ukuya kwicoke ephantse ibe yi-isotropic fluid. I-anisotropic yenaliti ye-coke ye-anisotropic kakhulu, ngenxa yokwakheka kwayo, iyimfuneko ekwenzeni i-electrode ephezulu yokusebenza esetyenziswa kwiziko lombane le-arc, apho kufuneka iqondo eliphezulu kakhulu lombane, oomatshini kunye nomthamo wokuthwala i-thermal. I-petroleum coke iphantse yaveliswa ngokukodwa yinkqubo yokupheka ilibazisekile, eyinkqubo ecothayo ethambileyo yokucotha kweentsalela ze-oyile ekrwada.
Inaliti coke ligama elisetyenziswa ngokuqhelekileyo kuhlobo olukhethekileyo lwecoke enomfanekiso ophezulu kakhulu wento ephuma kulungelelwaniso oluluqilima oluthe gqolo oludityanisiweyo lwesakhiwo sayo somaleko we-turbostratic kunye nokumila okubonakalayo kweenkozo.
Izibophelelo (malunga ne-20-25% kumxholo)
Itha yetha yamalahle
Iiarhente zokubopha zisetyenziselwa ukudibanisa amasuntswana aqinileyo omnye komnye. Ikhono labo lokumanzisa eliphezulu liguqula umxube ube yimeko yeplastiki yokubunjwa okulandelayo okanye ukukhupha.
Itha yetha yelahle iyinto ephilayo kwaye inesakhiwo esinevumba elahlukileyo. Ngenxa yobungakanani bayo obuphezulu bezangqa zebenzene ezifakwe endaweni kunye neziconsisiweyo, sele inobume obucacileyo be-hexagonal lettice yegraphite, ngaloo ndlela iququzelela ukusekwa kweendawo ezicwangciswe kakuhle zegraphic ngexesha legraphitisation. I-pitch ingqineke isesona sidibanisi sinenzuzo. Yintsalela yokukhutshwa kwetha yamalahle.
2. UKUHLANGANISA NOKUKHUTSHWA
Icoke egayiweyo ixutywa netela yetela kunye nezinye izongezo ukwenza intlama efanayo. Oku kuziswa kwi-cylinder ye-extrusion. Kwinqanaba lokuqala umoya kufuneka ususwe ngokucinezela kwangaphambili. Kunokuba inyathelo lokwenyani extrusion ilandela apho umxube extruded ukwenza electrode of ububanzi olufunwayo kunye nobude. Ukwenza ukuxuba kwaye ngokukodwa inkqubo ye-extrusion (jonga umfanekiso ekunene) umxube kufuneka ube yi-viscous. Oku kuphunyezwa ngokuyigcina kwiqondo lobushushu elinyukileyo le-approx. I-120 ° C (kuxhomekeke kwi-pitch) ngexesha lenkqubo yokuvelisa uhlaza. Le fomu eyisiseko enemilo ye-cylindrical yaziwa ngokuba yi "electrode eluhlaza".
3. UKUBHEKA
Zimbini iindidi zeziko lokubhaka ezisetyenziswayo:
Apha iintonga ezikhutshiweyo zifakwe kwi-cylindrical stainless steel canisters (saggers). Ukuze ugweme i-deformation ye-electrodes ngexesha lokufudumala, ii-saggers nazo zizaliswe ngokugubungela isigqubuthelo sesanti. I-saggers ilayishwa kwiiplatifomu zeenqwelo zikaloliwe (ezisezantsi zemoto) kwaye ziqengqeleke kwirhasi yendalo - izibane ezibasiweyo.
Isithando somlilo
Apha ii-electrode zibekwe kwindawo efihlakeleyo yelitye ezantsi kweholo yemveliso. Lo mgodi uyinxalenye yenkqubo yeringi yamagumbi angaphezu kwe-10. Amagumbi adityaniswe kunye nenkqubo yokujikeleza komoya oshushu ukugcina amandla. I-voids phakathi kwee-electrodes nazo zizaliswe ngesanti ukuphepha ukuguqulwa. Ngethuba lenkqubo yokubhaka, apho i-pitch i-carbonized, iqondo lokushisa kufuneka lilawulwe ngokucokisekileyo kuba kumaqondo okushisa ukuya kuma-800 ° C i-gas ekhawulezayo yokwakha inokubangela ukuqhekeka kwe-electrode.
Kwesi sigaba i-electrodes inoxinano malunga ne-1,55 - 1,60 kg / dm3.
4. UKUKHULELWA
I-electrodes ebhakiweyo ifakwe kwi-pitch ekhethekileyo (i-liquid pitch kwi-200 ° C) ukubanika ubuninzi obuphezulu, amandla omatshini, kunye ne-conductivity yombane baya kuyidinga ukumelana neemeko ezinzima zokusebenza ngaphakathi kwezithando.
5. UKUBHEKA KWAKHONA
Umjikelo wesibini wokubhaka, okanye "ukubhaka kwakhona," kuyafuneka ukuze kufakwe i-carbonize kwi-pitch impregnation kunye nokugxotha nayiphi na i-volatiles eseleyo. Ubushushu bokubhaka bufikelela phantse kuma-750°C. Kwesi sigaba i-electrodes inokufikelela kubuninzi obujikeleze i-1,67 - 1,74 kg / dm3.
6. UKUDLA
Acheson Furnace
Inyathelo lokugqibela lokwenziwa kwegraphite kukuguqulwa kwekhabhoni ebhakiweyo ibe yigraphite, ebizwa ngokuba yigraphitizing. Ngethuba lenkqubo ye-graphitizing, i-carbon engaphezulu okanye engaphantsi kwe-odwe ngaphambili (i-turbostratic carbon) iguqulwa ibe yi-dimensionally ordered graphite structure.
Ii-electrode zipakishwe kwiziko lombane elijikelezwe ngamasuntswana ekhabhoni ukwenza ubunzima obuqinileyo. Umsinga wombane ugqithiswa kwiziko, unyusa ubushushu bufikelele malunga ne-3000°C. Le nkqubo idla ngokufezekiswa kusetyenziswa i-ACHESON FURNACE okanye i-LENGTHWISE FURNACE (LWG).
Ngesithando somlilo se-Acheson i-electrodes i-graphitized usebenzisa inkqubo ye-batch, ngelixa kwisithando somlilo se-LWG yonke ikholamu i-graphitized ngaxeshanye.
7. UKUSEBENZA
I-electrodes yegraphite (emva kokupholisa) yenziwe ngoomatshini ngokuchanekileyo kunye nokunyamezela. Eli nqanaba linokuthi libandakanye ukwenziwa kwe-machining kunye nokufaka iziphelo (iziseko) zee-electrode kunye nepini yegraphite enemisonto (ingono) yokujoyina.
Ixesha lokuposa: Apr-08-2021