No nā ʻano huahana electrode kalapona a me graphite like ʻole, e like me kā lākou hoʻohana like ʻole, aia nā koi hoʻohana kūikawā a me nā ʻōkuhi maikaʻi. I ka noʻonoʻo ʻana i ke ʻano o nā mea maka e hoʻohana ʻia no kahi huahana, pono mākou e aʻo mua pehea e hoʻokō ai i kēia mau koi kūikawā a me nā ʻōkuhi maikaʻi.
(1) Ke koho ʻana o nā mea maka no ke alakaʻi ʻana i ka electrode graphite i hoʻohana ʻia i ke kaʻina hana electrometallurgical e like me ka hana kila EAF.
ʻO ka electrode graphite conductive i hoʻohana ʻia i ke kaʻina hana electrometallurgical e like me ka hana kila EAF e pono ke conductivity maikaʻi, ka ikaika mechanical kūpono, ke kūpaʻa maikaʻi i ka quenching a me ka hoʻomehana ʻana i ke kiʻekiʻe o ka mahana, ke kūpaʻa i ka corrosion a me ka haʻahaʻa o ka haumia.
① Hana ʻia nā electrodes graphite kiʻekiʻe mai ka petroleum coke, pitch coke a me nā mea maka haʻahaʻa lehu ʻē aʻe. Eia nō naʻe, pono nā lako hou aku no ka hana ʻana o ka electrode graphite, ke kahe hana lōʻihi a me ka ʻenehana paʻakikī, a ʻo ka hoʻohana ʻana i ka mana o 1 t graphite electrode he 6000 ~ 7000 kW · H.
② Hoʻohana ʻia ka coke anthracite kiʻekiʻe a i ʻole ka metallurgical ma ke ʻano he mea maka e hana ai i ka electrode kalapona. ʻAʻole pono ka hana ʻana o ka electrode kalapona i nā lako graphitization, a ua like nā kaʻina hana ʻē aʻe me ka hana ʻana o ka electrode graphite. ʻOi aku ka ʻino o ka conductivity o ka electrode kalapona ma mua o ka electrode graphite. ʻOi aku ka kiʻekiʻe o ka resistivity o ka electrode kalapona ma mua o ka electrode graphite ma ke ʻano he 2-3 mau manawa. ʻOkoʻa ka nui o ka lehu me ke ʻano o nā mea maka, ʻo ia hoʻi ma kahi o 10%. Akā ma hope o ka hoʻomaʻemaʻe kūikawā, hiki ke hoʻemi ʻia ka nui o ka lehu o ka anthracite i lalo o 5%. Hiki ke hoʻemi ʻia ka nui o ka lehu o ka huahana i kahi o 1.0% inā hoʻonui ʻia ka huahana i graphitized. Hiki ke hoʻohana ʻia ka electrode kalapona no ka hoʻoheheʻe ʻana i ke kila EAF maʻamau a me ka ferroalloy.
③ Me ka hoʻohana ʻana i ka graphite kūlohelohe ma ke ʻano he mea maka, ua hana ʻia ka electrode graphite kūlohelohe. Hiki ke hoʻohana ʻia ka graphite kūlohelohe ma hope o ke koho pono ʻia ʻana a me ka hoʻemi ʻia ʻana o kona lehu. ʻOi aku ka pālua o ke kū'ē ʻana o ka electrode graphitized maoli ma mua o ka electrode graphitized. Akā, haʻahaʻa loa ka ikaika mechanical, maʻalahi ke haki 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 hoʻoheheʻe i ke kila EAF maʻamau. I ka wā e hoʻohana ai i ka graphite kūlohelohe e hana i ka electrode conductive, maʻalahi ka hoʻoponopono a me ka hoʻokele ʻana i nā lako a me nā ʻenehana.
④ Hoʻohana ʻia ka electrode graphite e hana i ka electrode i hana hou ʻia (a i ʻole ka electrode haki graphitized) ma o ka kuʻi ʻana a me ka wili ʻana i ka ʻoki ʻana i nā ʻōpala a i ʻole nā huahana ʻōpala. ʻAʻole kiʻekiʻe ka nui o ka lehu o ka huahana (ma kahi o 1%), a ʻoi aku ka maikaʻi ʻole o kona 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 he maʻalahi ke aʻo ʻana i ka ʻenehana a me nā lako e hana i ka electrode i hana hou ʻia, ua kaupalena ʻia ke kumu waiwai maka o ka graphitization, no laila ʻaʻole kēia ala ke kuhikuhi hoʻomohala.
Ka manawa hoʻouna: Iune-11-2021