I-Electric arc furnace steelmaking isekelweama-electrodeukukhiqiza ama-arcs, ukuze amandla kagesi aguqulwe abe amandla okushisa ku-arc, ukuncibilikisa umthwalo wesithando somlilo nokususa ukungcola okufana nesibabule ne-phosphorus, ukwengeza izakhi ezidingekayo (njengekhabhoni, i-nickel, i-manganese, njll.) ukuze kuncibilike insimbi noma ingxubevange. ngezakhiwo ezahlukene. Ukushisa kwamandla kagesi kungalawula ngokunembile izinga lokushisa kwesithando futhi kukhiqize igesi engcolile yokushisa ephansi. Ukusebenza kahle kokushisa kwesithando somlilo se-arc steelmaking kungaphezu kwalokho kwesiguquli.
Ukuthuthukiswa kobuchwepheshe kunomlando weminyaka engaba yi-100 ekwenzeni insimbi ye-EAF, nakuba ezinye izindlela zihlala zibhekana nezinselelo zokwenza insimbi nokuncintisana, ikakhulukazi umthelela wokwenza insimbi komoya-mpilo osebenza kahle kakhulu, kodwa ingxenye yokukhiqizwa kwensimbi ye-EAF yokwenza insimbi emhlabeni wonke isakhula ngonyaka. ngonyaka. Ekuqaleni kwawo-1990, insimbi ekhiqizwa yi-EAF emhlabeni yabalelwa ku-1/3 wesamba sensimbi ephumayo. Kwamanye amazwe, i-EAF yayiwubuchwepheshe obuyinhloko bokwenza insimbi kwamanye amazwe, futhi ingxenye yensimbi ekhiqizwa ukuncibilikiswa kwe-EAF yayingaphezulu ngo-70% kunaleyo yase-Italy.
Ngawo-1980, kwasakazeka ekukhiqizeni insimbi ye-EAF ekubunjweni okuqhubekayo, futhi kancane kancane kwakha "inqubo yokukhiqiza amandla okusindisa amandla esithandweni somlilo se-arc esincibilikisa ukucwengisiswa okuqhubekayo okuqhubekayo, isithando somlilo se-arc sisetshenziselwa ikakhulukazi ukukhishwa kwemishini esheshayo njengokuluhlaza. impahla yokwenza insimbi. Ukuze unqobe ngokuyisisekelo ukuntengantenga kwe-arc yesithando somlilo se-AC arc, amandla ezigaba ezintathu kanye nokungalingani kwamanje kanye nomthelela omkhulu kugridi yamandla kanye nocwaningo lwesithando somlilo se-DC arc, futhi sifakwe ezimbonini zekhulu lokuqala leminyaka.
maphakathi nawo-1990s, isithando somlilo se-DC arc sisebenzisa impande engu-1 kuphela ye-electrode ye-graphite iye yasetshenziswa kabanzi emhlabeni ngeminyaka yama-90s (2 nge-graphite electrode DC arc furnace).
Ukunciphisa kakhulu ukusetshenziswa kwama-electrode egraphite kuyinzuzo enkulu yesithando somlilo se-arc ye-DC, ngaphambi kokuphela kweminyaka yawo-1970, isithando somlilo se-AC arc ngethani lokusetshenziswa kwensimbi ye-graphite electrode ngo-5 ~ 8kg, izindleko ze-graphite electrode zibalelwa ku-10% wezindleko eziphelele. kwensimbi kuya ku-15%, nakuba kuthathwe izinyathelo eziningi, ukuze ukusetshenziswa kwe-electrode yegraphite kwehle ku-4 6kg, noma izindleko zokukhiqiza zibalelwa ku-7% 10%, ukusetshenziswa kwamandla aphezulu kanye nendlela yokwenza insimbi ephezulu, i-electrode yak iyancipha. kuya ku-2 ~ 3k.g / T steel, isithando somlilo se-DC esisebenzisa kuphela i-electrode ye-graphite engu-1, ukusetshenziswa kwe-graphite electrode kungancipha ku-1.5kg / T yensimbi ngaphansi.
Kokubili ithiyori kanye nokwenza kukhombisa ukuthi ukusetshenziswa okukodwa kwe-graphite electrode kungancishiswa ngo-40% kuya ku-60% uma kuqhathaniswa nesithando somlilo se-AC arc.
Isikhathi sokuthumela: May-06-2022