Lub tshuab hluav taws xob arc rauv steelmaking yog raws licov electrodeslos tsim cov arcs, yog li lub zog hluav taws xob tuaj yeem hloov mus ua lub zog cua sov hauv lub arc, yaj lub cub tawg thiab tshem tawm cov khoom tsis huv xws li sulfur thiab phosphorus, ntxiv cov ntsiab lus tsim nyog (xws li carbon, nickel, manganese, thiab lwm yam) rau smelt hlau lossis alloy nrog ntau yam khoom. Lub zog hluav taws xob cua sov tuaj yeem tswj tau qhov kub ntawm lub cub tawg thiab tsim cov roj pov tseg qis kub. Qhov ua tau zoo ntawm lub cub tawg steelmaking siab dua li ntawm lub converter.
Kev tsim kho thev naus laus zis muaj keeb kwm li 100 xyoo hauv EAF steelmaking, txawm hais tias lwm txoj hauv kev yeej ib txwm ntsib cov teeb meem thiab kev sib tw ntawm steelmaking, tshwj xeeb tshaj yog qhov cuam tshuam ntawm cov pa oxygen ua haujlwm siab, tab sis qhov feem pua ntawm kev tsim cov hlau ntawm EAF steelmaking hauv ntiaj teb cov hlau tsim tawm tseem nce ntxiv txhua xyoo. Thaum ntxov xyoo 1990, cov hlau tsim los ntawm EAF hauv ntiaj teb suav txog 1/3 ntawm tag nrho cov hlau tsim tawm. Hauv qee lub tebchaws, EAF yog cov thev naus laus zis tseem ceeb hauv qee lub tebchaws, thiab qhov feem pua ntawm cov hlau tsim los ntawm EAF smelting yog 70% siab dua li hauv Ltalis.
Xyoo 1980, tau dav dav hauv EAF steel ntau lawm hauv kev ua tiav tas mus li, thiab maj mam tsim "txheej txheem txuag hluav taws xob ntawm cov khoom siv hluav taws xob ua ntej cua sov hluav taws xob arc furnace smelting ib qho kev ua kom zoo tas mus li casting ib qho kev dov tas mus li, arc furnace feem ntau yog siv rau cov khoom siv ceev ceev ua cov khoom siv raw ntawm kev ua hlau. Txhawm rau kom kov yeej qhov tsis ruaj khov ntawm lub zog siab AC arc furnace arc, peb-theem fais fab mov thiab tam sim no tsis sib npaug thiab cuam tshuam loj heev rau lub zog hluav taws xob thiab kev tshawb fawb ntawm DC arc furnace, thiab muab tso rau hauv daim ntawv thov kev lag luam ntawm thawj xyoo pua
nyob rau nruab nrab xyoo 1990, DC arc furnace siv tsuas yog 1 lub hauv paus ntawm graphite electrode tau siv dav hauv ntiaj teb hauv xyoo 90s (2 nrog qee qhov graphite electrode DC arc furnace).
Txo qhov kev siv graphite electrodes yog qhov zoo tshaj plaws ntawm DC arc furnace, ua ntej xyoo 1970s xaus, AC arc furnace ib tuj ntawm cov hlau siv graphite electrode hauv 5 ~ 8kg, graphite electrode tus nqi suav txog 10% ntawm tag nrho cov nqi ntawm cov hlau mus rau 15%, txawm hais tias tau siv ntau yam kev ntsuas, yog li ntawd graphite electrode noj txo qis mus rau 4.6kg, lossis cov nqi tsim khoom suav txog 7% 10%, kev siv lub zog siab thiab ultra siab zog steelmaking txoj kev, electrode yak raug txo kom txog 2 ~ 3k.g / T hlau, DC arc furnace uas siv tsuas yog 1 graphite electrode, graphite electrode noj tuaj yeem txo qis mus rau 1.5kg / T hlau hauv qab.
Ob qho kev xav thiab kev xyaum qhia tau hais tias kev siv graphite electrode ib zaug tuaj yeem txo tau los ntawm 40% txog 60% piv rau AC arc furnace.
Lub sijhawm tshaj tawm: Tsib Hlis-06-2022