Izvo zvigadzirwa zvekugadzira magraphite electrode zvinosanganisira petroleum coke, tsono coke uye marasha tar pitch:

Petroleum coke chigadzirwa chakasimba chinopisa chinowanikwa nekubika petroleum zvakasara uye petroleum pitch.Rudzi irworwo dema uye porous, chinhu chikuru kabhoni, uye madota akadzika kwazvo, kazhinji ari pasi pe0.5%.Petroleum coke imhando ye graphitized kabhoni zviri nyore.Petroleum coke inoshandiswa zvakanyanya muindasitiri yemakemikari, simbi uye mamwe maindasitiri.Ndiyo huru mbishi yekugadzira zvigadzirwa zve graphite uye kabhoni zvigadzirwa zve electrolytic aluminium.

Zvinoenderana nekupisa kwekupisa kupisa, petroleum coke inogona kukamurwa kuita yegirinhi coke uye calcined coke.Iyo yekutanga ndeye petroleum coke inowanikwa nekunonoka coking, iyo ine huwandu hukuru hwechinhu chinoputika uye ine yakaderera mechanical simba.Calcined coke inowanikwa necalcining green coke.Mazhinji ekunatsa muChina anongoburitsa girinhi coke, uye mazhinji ekuita calcination anoitwa mumiti kabhoni.

Petroleum coke inogona kukamurwa kuita yakakwira sulfur coke (inodarika 1.5% sulfur content), yepakati sulfur coke (0.5% -1.5% sulfur content) uye low sulfur coke (inodarika 0.5% sulfur content).Graphite electrodes uye zvimwe zvigadzirwa zve graphite zvekugadzira zvinowanzogadzirwa uchishandisa yakaderera-sarufa coke.

Tsono coke imhando yecoke ine pachena fibrous manyorerwo, yakaderera thermal yekuwedzera coefficient uye nyore graphitization.Kana iyo coke block yatyoka, inogona kukamurwa kuita yakareba uye yakatetepa mitsetse zvidimbu (kureba kusvika kuhupamhi chiyero kazhinji chiri pamusoro pe 1.75) zvinoenderana nemanyorerwo.Iyo anisotropic fibrous chimiro inogona kucherechedzwa pasi pepolarizing microscope, saka inonzi tsono coke.

Iyo anisotropy yemuviri uye yemagetsi zvimiro zvetsono coke zviri pachena.Nhungamiro inofananidzwa neakisi yakareba yezvimedu ine magetsi uye kupisa conductivity, uye coefficient yekuwedzera kwekushisa yakaderera.Munguva yekuumbwa kweextrusion, marefu axes ezvimedu zvakawanda akarongwa munzira yekubuda.Naizvozvo, tsono coke ndiyo kiyi mbishi zvinhu zvekugadzira yakakwirira-simba kana Ultra-yakakwirira-simba graphite electrodes.Iwo ma graphite electrode akagadzirwa ane yakaderera resistivity, diki kupisa kwekuwedzera coefficient, uye yakanaka yekupisa kuvhunduka kuramba.

Tsono coke yakakamurwa kuita mafuta-based tsono coke inogadzirwa kubva mupetroleum yasara uye marasha-based tsono coke inogadzirwa kubva kunatswa marasha tar pitch.

Coal tar pitch ndechimwe chezvigadzirwa zvikuru zvemarasha tar yakadzika kugadzirisa.Musanganiswa wemhando dzakasiyana-siyana dzemahydrocarboni, dema high viscosity semi-solid kana yakasimba pakupisa kwekamuri, isina kunyunguduka, kunyorova mushure mekupisa, uyezve kunyunguduka, ine density ye1.25-1.35g/cm3.Zvinoenderana nekunyorovesa kwayo nzvimbo yakakamurwa kuita yakaderera tembiricha, ine mwero uye yakakwirira tembiricha asphalt matatu.Goho repakati tembiricha asphalt i54-56% yetara yemarasha.Kuumbwa kwebhitumen yemarasha yakaoma kwazvo, iyo inoenderana nemidziyo yemarasha tar uye zviri mukati meheteroatoms, uye zvakare inobatwa neiyo coking tekinoroji system uye mamiriro ekugadzirisa emarasha tar.Kune akawanda ma indexes ekuratidza maitiro emarasha asphalt, seasphalt softening point, toluene insoluble matter (TI), quinoline insoluble matter (QI), coking value uye rheological property yemarasha asphalt.

Coal pitch inoshandiswa sebhainda uye yekumisa mumiriri muindasitiri yekabhoni.Zvimiro zvaro zvine simba guru pamaitiro ekugadzira uye kunaka kwekabhoni zvigadzirwa.Binder asphalt kazhinji inoshandisa ine mwero kupfava poindi, yakakwira coking kukosha, yakakwira beta resin yepakati tembiricha kana yepakati tembiricha yakagadziridzwa asphalt, kuisa pamuviri mumiriri kushandisa yakaderera kupfava poindi, yakaderera QI, rheology inogona kuva yakanaka yepakati tembiricha asphalt.

• Graphite electrode application

Graphite electrode ine dzakasiyana siyana dzekushandisa, dzinonyanya kushandiswa muchoto chemagetsi kugadzira simbi, ore thermal furnace, choto chekudzivirira, nezvimwe.

1. Graphite electrode inoshandiswa mu arc steelmaking furnace

Vashandisi vemagetsi echoto chesimbi, kugadzirwa kwesimbi yemagetsi ndiko kushandiswa kwegraphite electrode muchoto chazvino, ikozvino yakasimba pamucheto wezasi we electrode kuburikidza nekubuda kwegasi arc, kushandiswa kwearc inogadzirwa kupisa kwekunyungudutsa, zvichienderana nehukuru hwe magetsi echoto chemagetsi, ane madhayamita akasiyana emagraphite electrodes, kuitira kuti arambe achishandiswa emagetsi, maelectrodes ne electrode thread joint connection, The graphite electrode inoshandiswa mukugadzira simbi inokwana 70-80% yehuwandu hwehuwandu hwe graphite electrode.

2. Mushandisi wemaminerari kupisa electric furnace

Mineral furnace inonyanya kushandiswa kugadzira ferroalloy, pure silicon, yellow phosphorus, matte uye calcium carbide.Hunhu hwayo ndehwekuti chikamu chezasi che conductive electrode chakavigwa muchaji, saka mukuwedzera kune kupisa kunoitwa nearc pakati peplate uye kubhadharisa, ikozvino kuburikidza nechaji nekupikiswa kwechaji kunogadzirawo kupisa, imwe neimwe. tani yesilicon inoda kushandisa 150kg/ graphite electrode, toni yega yega yeyero phosphorous inoda kushandisa 40kg graphite electrode.

3, yevira rekudzivirira

Kugadzirwa kwechigadzirwa chegraphite chine graphitization choto, kunyungudutsa girazi choto uye kugadzirwa kwesilicon carbide choto mavira ekupikisa, choto chakaiswa chinofinha kupisa chinopikisa, ndichowo chinhu chekupisa.Kazhinji, iyo conductive graphite electrode inopinzwa muchoto musoro madziro kumagumo echoto, saka conductive electrode hairambe ichipedzwa.

Pamusoro pezvo, nhamba huru yegraphite electrode blanks inoshandiswawo kugadzira mumhando dzakasiyana dzecrucible, graphite boat, inopisa yekukanda mold uye vacuum yemagetsi choto chekudziya muviri uye zvimwe zvakakosha-zvakagadzirwa zvigadzirwa.Semuyenzaniso, muindasitiri yegirazi requartz, 10t graphite electrode isina chinhu inodiwa kune yega yega 1t capacitor chubhu kugadzirwa, uye 100kg electrode isina chinhu inopedzwa pane yega yega 1t quartz kugadzira zvidhinha.

#carbon raiser #graphite electrode #carbon addictive # graphite petroleum coke # tsono coke #petroleum coke