Kugadzira simbi yechoto chemagetsi che arc kunobva pamaerekitirodhikugadzira ma arc, kuitira kuti simba remagetsi rigone kuchinjwa kuita simba rekupisa mu arc, kunyungudutsa mutoro wechoto uye kubvisa tsvina yakaita sesarufa nephosphorus, kuwedzera zvinhu zvinodiwa (senge kabhoni, nickel, manganese, nezvimwewo) kuti simbi kana alloy zvinyungudike zvine hunhu hwakasiyana-siyana. Kupisa simba remagetsi kunogona kudzora tembiricha yechoto nemazvo uye kugadzira gasi rinorasa tembiricha yakaderera. Kushanda zvakanaka kwechoto chesimbi che arc kwakakwira kupfuura kweche converter.
Kuvandudzwa kwetekinoroji kwave nemakore angangoita zana mukugadzira simbi muEAF, kunyangwe dzimwe nzira dzichigara dzichisangana nematambudziko ekugadzira simbi nemakwikwi, kunyanya kushanda zvakanaka kwesimbi yeoxygen, asi huwandu hwekugadzirwa kwesimbi muEAF mukugadzira simbi pasi rose huchiri kuwedzera gore negore. Mukutanga kwema1990, simbi inogadzirwa neEAF pasi rose yaisvika 1/3 yehuwandu hwesimbi inobuda. Mune dzimwe nyika, EAF ndiyo yaive tekinoroji huru yekugadzira simbi mune dzimwe nyika, uye huwandu hwesimbi inogadzirwa neEAF smelting hwaive hwakakwira ne70% kupfuura muItari.
Muma1980, kugadzirwa kwesimbi yeEAF kwakatanga kushandiswa zvakanyanya, uye zvishoma nezvishoma kwakagadzira "maitiro ekugadzira simbi inochengetedza simba, simbi yemagetsi inodziya, inonyungudutsa, inonatswa, inozungunuka, inotenderera, uye inokandwa, simbi inoshandiswa zvakanyanya kugadzira simbi. Kuti ikunde kusagadzikana kwesimbi, simba guru, uye kusawirirana kwemagetsi, uye kukanganisa kwakanyanya pamagetsi emagetsi uye kutsvaga simbi yeDC, uye kushandiswa kwayo muindasitiri muzana remakore rekutanga.
Pakati pema1990, DC arc furnace ichishandisa mudzi mumwe chete wegraphite electrode yakashandiswa zvakanyanya pasi rose muma90s (2 iine graphite electrode DC arc furnace).
Kuderedza zvakanyanya kushandiswa kwema electrode e graphite ndiyo mukana mukuru weDC arc choto, AC arc choto pa tani yekushandiswa kwe graphite electrode mu 5 ~ 8kg, graphite electrode costs yakaita 10% yemutengo wesimbi kusvika 15%, kunyange zvazvo matanho akawanda akatorwa, zvekuti kushandiswa kwema electrode e graphite kwakaderera kusvika 4 6kg, kana kuti mari yekugadzira yakaita 7% 10%, kushandiswa kwesimba rakawanda uye nzira yekugadzira simbi ine simba rakawanda, electrode yak yakaderedzwa kusvika 2 ~ 3k.g / T steel, DC arc choto inoshandisa 1 chete graphite electrode, graphite electrode costs inogona kudzikiswa kusvika 1.5kg / T steel pasi.
Dzidziso nemaitiro zvinoratidza kuti kushandiswa kamwe chete kwe graphite electrode kunogona kuderedzwa ne40% kusvika 60% zvichienzaniswa ne AC arc furnace.
Nguva yekutumira: Chivabvu-06-2022