Vim lawv cov khoom siv lub cev thiab tshuaj lom neeg tshwj xeeb, cov graphite electrodes tau dhau los ua qhov kev xaiv zoo tshaj plaws rau kev ua hlau hluav taws xob arc (EAF). Lawv qhov kev tsim nyog tau pom tseeb hauv cov hauv qab no:
- Kev Ua Hluav Taws Xob Siab thiab Kev Tiv Thaiv Tsawg
- Kev Xa Hluav Taws Xob Zoo: Graphite muaj qhov tsis kam tiv taus qis heev (kwv yees li 1/3 txog 1/4 ntawm tooj liab), ua rau nws xa hluav taws xob nrog qhov poob hluav taws xob tsawg kawg nkaus hauv cov cub tawg hluav taws xob arc. Qhov no ua kom muaj kev sib xyaw ua ke ruaj khov thiab txhim kho kev siv hluav taws xob.
- Txo Kev Siv Hluav Taws Xob: Piv rau lwm cov ntaub ntawv (piv txwv li, cov electrodes tooj liab), cov electrodes graphite tuaj yeem txo kev siv hluav taws xob kwv yees li 20% -30%, txiav cov nqi tsim hlau ntau heev.
- Kev Tiv Thaiv Kub Siab thiab Kev Ruaj Ntseg Thermal
- Qhov Kub Tshaj Plaws: Qhov kub ntawm graphite nce mus txog li 3,650°C, uas siab tshaj qhov kub ntawm kev ua hlau ib txwm muaj (1,600-1,800°C). Nws tswj tau lub cev khov kho thaum muaj cua sov siab, tiv thaiv kev yaj lossis kev hloov pauv.
- Kev Tiv Thaiv Kev Poob Siab Thaum Tshav Kub: Graphite hloov kho sai sai rau qhov kub thiab txias hloov pauv loj heev (piv txwv li, thaum lub sijhawm pib / kaw arc), txo qhov tawg lossis spalling los ntawm kev ntxhov siab thermal thiab ntev lub neej kev pabcuam electrode.
- Kev Tshuaj Lom Zem Zoo Kawg Nkaus
- Kev Tiv Thaiv Oxidation thiab Corrosion: Thaum kub siab, graphite tsim cov txheej txheem tiv thaiv carbon oxide ntom ntom ntawm nws qhov chaw, cais nws tawm ntawm kev yaig ntawm oxygen thiab slag thiab txo kev siv electrode.
- Kev Ua Haujlwm Tsawg: Graphite tsis tshua muaj kev cuam tshuam nrog cov khoom hauv cov hlau molten thiab slag (piv txwv li, hlau, oxygen, sulfur), zam kev ua qias tuaj ntawm cov khoom tsis huv thiab ua kom cov hlau huv.
- Muaj Zog Kho Tshuab Siab thiab Kev Cuam Tshuam
- Kev Ruaj Ntseg ntawm Cov Qauv: Cov hluav taws xob graphite, tsim nyob rau hauv qhov siab thiab ci ntawm qhov kub siab, qhia txog qhov ceev ceev thiab cov qauv me me sib xws, tiv taus kev co thiab lub zog hluav taws xob hauv EAFs.
- Kev Tiv Thaiv Kev Tawg: Lawv tiv taus kev tawg thaum lub sijhawm tsa / txo qis ntawm lub electrode thiab kev hloov pauv tam sim no, ua kom ntseeg tau tias muaj kev tsim khoom tsis tu ncua.
- Kev sib dua thiab yooj yim siv
- Txo Cov Khoom Siv Khoom: Graphite qhov ceev (~ 2.2 g / cm³) qis dua li tooj liab (~ 8.9 g / cm³), txo qhov hnyav ntawm electrode thiab txo qhov hnav ntawm EAF suspension systems thiab kev siv hluav taws xob.
- Kev Ua Haujlwm Uas Kho Tau: Cov hluav taws xob graphite tuaj yeem kho tau los ntawm kev tig, kev khawb, thiab lwm yam txheej txheem, thiab txuas nrog los ntawm kev xov kom tsim cov electrode ntev rau ntau hom cub tawg.
- Kev Siv Nyiaj Zoo thiab Cov Txiaj Ntsig Ib puag ncig
- Cov Kev Zoo ntawm Kev Lag Luam: Txawm hais tias tus nqi ntawm cov khoom siv siab dua, cov graphite electrodes lub neej ntev thiab kev siv hluav taws xob tsawg txo cov nuj nqis tag nrho, tshwj xeeb tshaj yog rau kev tsim khoom loj thiab txuas ntxiv mus.
- Kev Phooj Ywg Zoo Rau Ib Puag Ncig: Piv rau cov electrodes tooj liab, kev tsim cov graphite tsim kom muaj kuab paug tsawg dua thiab tso cai rau kev rov ua dua tshiab, ua raws li cov qauv kev tsim khoom ntsuab.
Kev Sib Piv Cov Xwm Txheej ntawm Daim Ntawv Thov
- EAF Kev Ua Hlau: Cov hluav taws xob graphite feem ntau yog cov tseem ceeb, tshwj xeeb tshaj yog hauv ultra-high-power (UHP) EAFs, ua tau raws li qhov xav tau ntawm kev ua haujlwm zoo, kev txuag nqi, thiab kev tsim khoom loj.
- Lwm Cov Ntawv Thov: Txawm hais tias lwm txoj hauv kev tuaj yeem hloov cov electrodes graphite hauv cov cub tawg tsis kam lossis induction vim yog tus nqi lossis cov txheej txheem xav tau, lawv tseem tsis tuaj yeem hloov pauv tau hauv EAFs.
Xaus lus
Cov graphite electrodes lub zog ua ke—kev ua tau zoo, kev ua kom sov tau zoo, kev ruaj khov ntawm tshuaj lom neeg, kev ua kom ruaj khov, kev tsim qauv sib dua, thiab cov txiaj ntsig kev lag luam/ib puag ncig—ua rau lawv tsis tseem ceeb rau EAF steelmaking. Lawv cov kev ua tau zoo cuam tshuam ncaj qha rau kev ua haujlwm ntawm steelmaking, cov nqi, thiab qhov zoo ntawm steel, ua rau lawv lub luag haujlwm tseem ceeb hauv kev lag luam steel niaj hnub no.
Lub sijhawm tshaj tawm: Lub Xya Hli-07-2025