Electric arc eziko steelmaking isekelwei-electrodesukuvelisa i-arcs, ukwenzela ukuba amandla ombane angatshintshwa abe ngamandla obushushu kwi-arc, umthwalo wokunyibilika kwesithando somlilo kunye nokususa ukungcola okufana nesulfure kunye ne-phosphorus, ukongeza izinto eziyimfuneko (njengekhabhoni, i-nickel, i-manganese, njl.) Ukunyibilikisa intsimbi okanye i-alloy eneempawu ezahlukeneyo. Ukufudumala kwamandla ombane kunokulawula ngokuchanekileyo ubushushu besithando somlilo kwaye kuvelise igesi yenkunkuma yobushushu obuphantsi. Ukusebenza kobushushu be-arc steelmaking furnace kuphezulu kunomguquli.
Uphuhliso lobuchwephesha lunembali malunga ne-100 yeminyaka kwi-EAF steelmaking, nangona ezinye iindlela zihlala zijongene nemingeni yokwenza i-steelmaking kunye nokhuphiswano, ngokukodwa impembelelo ephezulu ye-oksijini yokwenza i-steelmaking, kodwa umlinganiselo wemveliso yentsimbi ye-EAF ye-steelmaking kwimveliso yentsimbi yehlabathi isakhula unyaka nonyaka. Ekuqaleni kweminyaka yee-1990, intsimbi eveliswe yi-EAF emhlabeni ithatha i-1/3 yemveliso yentsimbi. Kwamanye amazwe, i-EAF yayiyeyona teknoloji yokwenza intsimbi kwamanye amazwe, kwaye inxalenye yentsimbi eveliswe yi-EAF yokunyibilikiswa yayingama-70% ngaphezulu kwaleyo yase-Italy.
Ngoo-1980s, kuxhaphake kakhulu kwimveliso yentsimbi ye-EAF ngokuqhubeka nokuphosa, kwaye ngokuthe ngcembe yenze inkqubo yokuvelisa amandla okugcina amandla kwisithando sombane esitshisayo se-arc esinyibilikisa ukucocwa ngokuqhubekayo ukuqengqeleka okuqengqelekayo, isithando somlilo se-arc sisetyenziswa ikakhulu kwizixhobo ezikhawulezayo ezilahliweyo njengesixhobo sokwenza izinto ezikrwada eziphezulu zokoyisa intsimbi ekrwada. Ukungazinzi kwe-arc yesithando somlilo, unikezelo lwamandla amanqanaba amathathu kunye nokungalungelelani kwangoku kunye nefuthe elibi kwigridi yamandla kunye nophando lwe-DC arc furnace, kwaye ifakwe kwisicelo soshishino kwiNkulungwane yokuqala.
phakathi 1990s, DC arc eziko usebenzisa kuphela 1 ingcambu electrode graphite sele isetyenziswa ngokubanzi ehlabathini 90s (2 kunye negraphite electrode DC arc eziko).
Ukunciphisa kakhulu ukusetyenziswa kwe-electrode yegraphite yeyona nzuzo inkulu ye-DC arc eziko, ngaphambi kokuphela kweminyaka yee-1970, i-AC arc furnace ngetoni yokusetyenziswa kwentsimbi ye-graphite electrode kwi-5 ~ 8kg, iindleko ze-electrode zegraphite zibalelwa kwi-10% yexabiso lilonke lentsimbi ukuya kwi-15%, nangona kuthathwe inani leekhilogram zokunciphisa igrafu okanye i-electrode yokunciphisa iindleko zegrafu. ibalwa kwi-7% 10%, ukusetyenziswa kwamandla aphezulu kunye ne-ultra high-power high-steelmaking method, i-electrode yak iyancitshiswa ibe yi-2 ~ 3k.g / T steel, i-DC arc furnace esebenzisa i-electrode ye-graphite kuphela, ukusetyenziswa kwe-graphite electrode kunokuncipha ukuya kwi-1.5kg / T yentsimbi.
Zombini ithiyori kunye nokusebenza kubonisa ukuba ukusetyenziswa okukodwa kwe-electrode yegraphite kunokuncitshiswa ngama-40% ukuya kuma-60% xa kuthelekiswa ne-AC arc furnace.
Ixesha lokuposa: May-06-2022