No nā ʻano huahana kalapona a me ka graphite electrode, e like me kā lākou hoʻohana like ʻole, aia nā koi hoʻohana kūikawā a me nā hōʻailona maikaʻi.Ke noʻonoʻo nei i ke ʻano o nā mea maka e hoʻohana ʻia no kekahi huahana, pono mākou e aʻo mua pehea e hoʻokō ai i kēia mau koi kūikawā a me nā hōʻailona maikaʻi.
(1) Ke koho ʻana i nā mea maka no ka hoʻokō ʻana i ka electrode graphite i hoʻohana ʻia i ka hana electrometallurgical e like me ka EAF steelmaking.
ʻO ka conductive graphite electrode i hoʻohana ʻia i ke kaʻina hana electrometallurgical e like me ka EAF steelmaking pono e loaʻa i ka conductivity maikaʻi, ka ikaika mechanical kūpono, ke kūpaʻa maikaʻi i ke kinai ʻana a me ka hoʻomehana ʻana i ka wela kiʻekiʻe, ka pale ʻana i ka corrosion a me ka haʻahaʻa o ka haumia.
① Hoʻokumu ʻia nā electrodes graphite kiʻekiʻe mai ka petroleum coke, pitch coke a me nā mea haʻahaʻa lehu haʻahaʻa.Eia naʻe, ka hana o ka graphite electrode pono hou lako, lōʻihi kaʻina kahe a me ka paʻakikī 'enehana, a me ka mana hoʻohana o 1 t graphite electrode mea 6000 ~ 7000 kW · H.
② Hoʻohana ʻia ka anthracite kiʻekiʻe a i ʻole metallurgical coke ma ke ʻano he mea maka e hana ai i ka electrode kalapona.ʻAʻole pono ka hana ʻana o ka carbon electrode i nā mea hana graphitization, a ʻo nā kaʻina hana ʻē aʻe e like me ka hana ʻana o ka electrode graphite.ʻOi aku ka hewa o ka conductivity o ka electrode carbon ma mua o ka electrode graphite.ʻO ka resistivity o ke kalapona electrode he 2-3 mau manawa kiʻekiʻe ma mua o ka electrode graphite.ʻOkoʻa ka ʻike lehu me ka maikaʻi o nā mea maka, ʻo ia ka 10%.Akā ma hope o ka hoʻomaʻemaʻe kūikawā, hiki ke hoʻemi ʻia ka lehu o ka anthracite ma lalo o 5%.Hiki ke ho'emi 'ia ka lehu o ka huahana ma kahi o 1.0% ke ho'onui hou 'ia ka huahana.Hiki ke hoʻohana ʻia ka carbon electrode no ka hoʻoheheʻe ʻana i ke kila EAF maʻamau a me ka ferroalloy
③ Hoʻohana i ka graphite maoli ma ke ʻano he mea maka, ua hana ʻia ka electrode graphite kūlohelohe.Hiki ke hoʻohana wale ʻia ka graphite kūlohelohe ma hope o ke koho pono ʻana a hoʻemi ʻia kona ʻike lehu.ʻO ka resistivity o ka electrode graphite maoli he ʻelua paha ia o ka electrode graphitized.Akā he haʻahaʻa haʻahaʻa ka ikaika mechanical, maʻalahi ke wāwahi i ka wā e hoʻohana ai.Ma kahi me ka nui o ka hana graphite kūlohelohe, hiki ke hana ʻia ka electrode graphite kūlohelohe e hoʻolako i ka EAF liʻiliʻi e honi i ke kila EAF maʻamau.Ke hoʻohana nei i ka graphite kūlohelohe e hana i ka electrode conductive, maʻalahi nā mea hana a me ka ʻenehana e hoʻoponopono a haku.
④ Hoʻohana ʻia ka graphite electrode e hana i ka electrode regenerated (a i ʻole graphitized broken electrode) ma o ka ʻoki ʻana a me ka wili ʻana i nā ʻōpala a i ʻole nā huahana ʻōpala.ʻAʻole kiʻekiʻe ka lehu o ka huahana (e pili ana i 1%), a ʻoi aku ka maikaʻi o kāna conductivity ma mua o ka electrode graphitized.ʻO kona resistivity ma kahi o 1.5 mau manawa o ka electrode graphitized, akā ʻoi aku ka maikaʻi o kāna hopena noi ma mua o ka electrode graphite maoli.ʻOiai ua maʻalahi ka haku i ka ʻenehana a me nā mea hana e hana ai i ka electrode regenerated, ua kaupalena ʻia ke kumu kumu o ka graphitization, no laila ʻaʻole kēia ke ala hoʻomohala.
Ka manawa hoʻouna: Iune-11-2021