Electric arc eziko steelmaking isekelweii-electrodesukuvelisa i-arcs, ukwenzela ukuba amandla ombane angatshintshwa abe ngamandla obushushu kwi-arc, ukunyibilika komthwalo wesithando kunye nokususa ukungcola okufana nesulfure kunye ne-phosphorus, ukongeza izinto eziyimfuneko (ezifana nekhabhoni, i-nickel, i-manganese, njl.) ezineempawu 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 neminyaka eyi-100 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 kwihlabathi imveliso yentsimbi isakhula ngonyaka. ngonyaka. 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.
Ngo-1980s, ixhaphake kwimveliso yentsimbi ye-EAF ngokuphosa ngokuqhubekayo, kwaye ngokuthe ngcembe yenze "inkqubo yokuvelisa amandla okugcina amandla e-scrap preheating electric arc furnace inyibilikisa ukucokisa okuqhubekayo ukuphosa ukuqengqeleka okuqhubekayo, iziko le-arc lisetyenziswa ikakhulu kwizixhobo ezikhawulezayo ezilahlwayo njengekrwada. izinto ezenziwe ngentsimbi. Ukuze ukoyise ngokusisiseko amandla aphezulu aphezulu e-AC arc ukungazinzi kwe-arc, unikezelo lwamandla amanqanaba amathathu kunye nokungalungelelani kwangoku kunye nefuthe elibi kwigridi yamandla kunye nophando lweDC arc eziko, 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 furnace, ngaphambi kokuphela kweminyaka yee-1970, i-AC arc furnace ngetoni yokusetyenziswa kwentsimbi ye-graphite electrode nge-5 ~ 8kg, iindleko ze-electrode zegraphite zibalelwa kwi-10% yeendleko zizonke. yentsimbi ukuya kwi-15%, nangona kuthathwe inani lamanyathelo, ukwenzela ukuba ukusetyenziswa kwe-electrode yegraphite kwehle ukuya ku-4 6kg, okanye iindleko zemveliso zibalelwa kwi-7% 10%, ukusetyenziswa kwamandla aphezulu kunye ne-ultra high power methodi yokwenza i-steelmaking, i-electrode yak iyancitshiswa. ukuba 2 ~ 3k.g / T intsimbi, DC arc eziko esebenzisa kuphela 1 electrode graphite, ukusetyenziswa kwegraphite electrode kungancipha ukuya 1.5kg / T intsimbi phantsi.
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