Graphite electrodes yog nyiam dua hlau electrodes nyob rau hauv ob peb lub high-temperature thiab electrochemical daim ntaub ntawv rau ntau yam yog vim li cas:
- Siab Melting Point: Graphite muaj qhov ua haujlwm siab heev thiab tuaj yeem tiv taus qhov kub thiab txias, ua rau nws tsim nyog rau kev siv xws li hluav taws xob arc rauv (EAFs) qhov chaw ua haujlwm kub siab tshaj 3,000 degree .
- Hluav taws xob conductivity: Graphite muaj cov khoom siv hluav taws xob zoo heev, feem ntau piv rau cov hlau. Qhov no tso cai rau kev hloov pauv tam sim no hauv cov txheej txheem xws li steelmaking thiab electrochemical tshuaj.
- Tshuaj Stability: Graphite muaj tshuaj lom neeg ruaj khov dua li ntau cov hlau ntawm qhov kub thiab txias, tshwj xeeb tshaj yog nyob rau hauv kev txo cov cua. Nws tsis oxidize tau yooj yim li hlau, uas tuaj yeem yog qhov tseem ceeb hauv cov txheej txheem cuam tshuam nrog cov hlau molten thiab slag.
- Tsawg Reactivity: Graphite feem ntau tsis tshua muaj kev cuam tshuam ntau dua li cov hlau, uas tiv thaiv kev sib kis ntawm cov khoom kawg. Cov cuab yeej no tseem ceeb tshwj xeeb hauv cov txheej txheem metallurgy thiab electrochemical.
- Tus nqi siv tau: Hauv ntau daim ntawv thov, graphite electrodes tuaj yeem siv nyiaj ntau dua li qib siab hlau electrodes. Tus nqi ntawm kev ua thiab cov ntaub ntawv tuaj yeem nyiam graphite, tshwj xeeb tshaj yog thaum xav tau ntau.
- Txo deformation: Graphite electrodes yog cov qauv ruaj khov nyob rau hauv qhov kub thiab txias thiab thauj khoom, txo qis deformation thaum siv, uas tuaj yeem ua rau lub neej ua haujlwm ntev dua piv rau qee cov hlau electrodes.
- Yooj yim ntawm kev tsim khoom: Graphite electrodes tuaj yeem tsim ntau yam duab thiab ntau thiab tsawg, haum rau cov kev siv tshwj xeeb, ua rau lawv muaj ntau yam rau ntau cov txheej txheem kev lag luam.
- Self-lubricating Properties: Qee zaum, lub lubricating qhov ntawm graphite muaj txiaj ntsig zoo thaum lub sijhawm ua haujlwm lossis ua cov khoom siv, thaum hlau yuav tsim kev sib txhuam ntau dua.
- Environmental Considerations: Hauv qee cov txheej txheem electrochemical, kev siv cov hlau electrodes tuaj yeem ua rau muaj kev cuam tshuam tsis zoo los yog kev sib kis; graphite tuaj yeem txo cov teeb meem no.
