Electric arc furnace steelmaking inobva paelectrodeskugadzira arcs, kuitira kuti simba remagetsi rishandurwe kuve simba rekupisa muarc, kunyunguduka kwechoto mutoro uye kubvisa tsvina sesarufa uye phosphorus, kuwedzera zvinhu zvinodiwa (senge kabhoni, nickel, manganese, nezvimwewo) kunyungudutsa simbi kana alloy. nezvinhu zvakasiyana-siyana. Magetsi emagetsi ekudziya anogona kunyatso kudzora tembiricha yechoto uye kuburitsa yakaderera tembiricha tsvina gasi. Kupisa kwekupisa kwearc steelmaking furnace yakakwirira kudarika iyo yekushandura.
Kusimukira kweTekinoroji kune nhoroondo yemakore angangoita zana mukugadzira simbi yeEAF, kunyangwe dzimwe nzira dzinogara dzichitarisana nematambudziko ekugadzira simbi uye kukwikwidza, kunyanya kushanda kwakanyanya kweokisijeni kugadzira simbi, asi chikamu chekugadzirwa kwesimbi kweEAF kugadzira simbi munyika kuchiri kukwira gore. negore. Mukutanga kwema1990, simbi inogadzirwa neEAF munyika yakaverengera 1/3 yehuwandu hwesimbi yakabuda. Mune dzimwe nyika, EAF ndiyo yaive tekinoroji huru yekugadzira simbi mune dzimwe nyika, uye chikamu chesimbi chaigadzirwa neEAF kunyungudutsa chaive 70% chepamusoro pane icho muItaly.
Muna 1980s, yakapararira muEAF kugadzirwa kwesimbi mukuenderera mberi kukanda, uye zvishoma nezvishoma yakagadzira "simba-rekuchengetedza kugadzirwa kwechikara chinopisa chemagetsi arc choto chinonyungudutsa kunatsa kunoramba kuchikanda kutenderedza, arc choto chinonyanya kushandiswa kukurumidza midziyo yakarasika seyakabikwa. zvinhu zvekugadzira simbi. Kuti ukunde zvakanyanya simba repamusoro AC arc furnace arc kusagadzikana, matatu-chikamu magetsi uye yazvino kusagadzikana uye kukanganisa kwakanyanya pane gidhi remagetsi uye kutsvagisa kweDC arc furnace, uye kuiswa muindasitiri yekushandisa paCentury yekutanga.
pakati pemakore ekuma1990, DC arc furnace ichishandisa 1 mudzi wegraphite electrode yakashandiswa zvakanyanya pasi rose kuma90s (2 ine mamwe magraphite electrode DC arc furnace).
Kuderedza zvakanyanya kushandiswa kwemagraphite electrode ndiyo mukana mukuru weDC arc furnace, makore eku1970 asati apera, AC arc furnace patani yekushandiswa kwesimbi yegraphite electrode mu5 ~ 8kg, mari yegraphite electrode yakaverengerwa gumi muzana yemari yese. yesimbi kusvika 15%, kunyangwe yakatorwa matanho akati wandei, zvekuti graphite electrode kudyiwa kwakadzikira kusvika 4 6kg, kana mutengo wekugadzira wakaita 7% 10%, kushandiswa kwesimba repamusoro uye Ultra high simba steelmaking nzira, electrode yak inoderedzwa. kusvika ku2 ~ 3k.g / T simbi, DC arc vira iyo inoshandisa chete 1 graphite electrode, graphite electrode kushandiswa kunogona kudzikiswa kusvika 1.5kg / T simbi pasi.
Zvose dzidziso uye maitiro zvinoratidza kuti kushandiswa kumwe chete kwe graphite electrode kunogona kuderedzwa ne 40% kusvika 60% kana ichienzaniswa ne AC arc furnace.
Nguva yekutumira: Chivabvu-06-2022