Mo nga momo momo waro me nga hua hiko kauwhata, i runga i o raatau whakamahinga rereke, he whakaritenga whakamahi motuhake me nga tohu kounga.I te wa e whakaaro ana he aha te momo rauemi mata hei whakamahi mo tetahi hua, me ako tuatahi me pehea te whakatutuki i enei whakaritenga motuhake me nga tohu kounga.
(1) Ko te kowhiringa o nga rauemi mata mo te whakahaere i nga hiko graphite e whakamahia ana i roto i nga mahi electrometallurgical penei i te hanga maitai EAF.
Ko te electrode graphite conductive e whakamahia ana i roto i nga mahi electrometallurgical penei i te hanga rino EAF me pai te kawe, te kaha miihini tika, te aukati pai ki te tinei me te whakamahana i te wera nui, te aukati waikura me te iti o te poke.
① Ko nga electrodes graphite kounga teitei ka mahia mai i te petroleum coke, pitch coke me etahi atu papanga rehu iti.Heoi, ko te hanga o te graphite electrode me nui ake nga taputapu, te roa o te rere o te tukanga me te hangarau uaua, me te kohi hiko o te 1 t graphite electrode he 6000 ~ 7000 kW · H.
② Ko te anthracite te kounga teitei, te tiihi konganuku ranei ka whakamahia hei rauemi mata hei whakaputa i te hiko waro.Ko te hanga o te hiko waro kaore e hiahiatia he taputapu graphitization, me etahi atu tukanga whakaputa he rite tonu ki te hanga o te hiko kauwhata.He kino rawa atu te kawe o te hiko waro i tera o te hiko kauwhata.Ko te parenga o te hiko waro he 2-3 wa teitei ake i tera o te hiko kauwhata.He rereke te ahua o te pungarehu ki te kounga o nga rauemi mata, e tata ana ki te 10%.Engari i muri i te horoi motuhake, ka taea te whakaheke i te pungarehu o te anthracite ki te iti iho i te 5%.Ko te ihirangi pungarehu o te hua ka taea te whakaheke ki te 1.0% mena ka whakaahuahia ano te hua.Ka taea te whakamahi i te hiko waro hei whakarewa i te maitai EAF noa me te ferroalloy
③ Ma te whakamahi i te kauwhata taiao hei rauemi mata, i hangaia te hiko kauwhata taiao.Ka taea anake te whakamahi i te kauwhata taiao i muri i te ata whiriwhiri me te whakaheke i te pungarehu.Ko te parenga o te hiko kauwhata maori he tata ki te rua o te hiko kauwhata.Engari he iti te kaha o te miihini, he ngawari ki te pakaru ina whakamahi.I roto i te waahi he nui te hanga kauwhata maori, ka taea te whakaputa i te hiko kauwhata maori hei tuku i te EAF iti hei hongi i te maitai EAF noa.I te wa e whakamahi ana i te kauwhata taiao hei whakaputa i te hiko hiko, he ngawari te whakaoti me te rangatira o nga taputapu me te hangarau.
④ Ka whakamahia te graphite electrode ki te whakaputa i te hihiko kua whakahouhia (he graphitized whati electrode ranei) na roto i te kuru me te huri o te tapahi para, nga hua para ranei.Ko te kiko o te pungarehu o te hua kaore i te teitei (mo te 1%), a he kino atu te kawe i te hiko o te graphitized.Ko tona parenga he 1.5 nga wa o tera o te electrode graphitized, engari he pai ake tona paanga ki tera o te hiko kauwhata taiao.Ahakoa he ngawari ki te mohio ki nga hangarau me nga taputapu ki te whakaputa i nga hiko kua whakahouhia, he iti te puna rauemi mata o te graphitization, no reira ehara tenei i te huarahi whanaketanga.
Wā tuku: Hune-11-2021