Zida zopangira ma electrode a graphite zimaphatikizapo petroleum coke, singano coke ndi malasha phula phula:

Petroleum coke ndi chinthu cholimba choyaka chomwe chimapezedwa ndi coking petroleum residues ndi petroleum pitch.Mtundu ndi wakuda ndi porous, chinthu chachikulu ndi carbon, ndipo phulusa ndi otsika kwambiri, nthawi zambiri pansi 0.5%.Petroleum coke ndi mtundu wa carbon graphitized mosavuta.Mafuta a coke amagwiritsidwa ntchito kwambiri m'makampani opanga mankhwala, zitsulo ndi mafakitale ena.Ndiwo zida zazikulu zopangira zinthu zopangira ma graphite ndi zinthu za carbon za aluminiyamu ya electrolytic.

Malinga ndi kutentha kwa kutentha, petroleum coke imatha kugawidwa kukhala coke wobiriwira ndi coke calcined.Yoyamba ndi petroleum coke yomwe imapezeka mwa kuchedwa kuphika, yomwe imakhala ndi zinthu zambiri zosasunthika ndipo imakhala ndi mphamvu zochepa zamakina.Calcined coke akamagwira calcining wobiriwira coke.Malo ambiri oyeretsera ku China amangotulutsa coke wobiriwira, ndipo ntchito zambiri za calcination zimachitika muzomera za kaboni.

Mafuta a coke amatha kugawidwa mu sulfure coke yapamwamba (yoposa 1.5% ya sulfure), coke ya sulfure yapakati (0.5% -1.5% ya sulfure) ndi coke ya sulfure yochepa (yosakwana 0.5% ya sulfure).Ma electrode a graphite ndi zinthu zina zopangira ma graphite nthawi zambiri amapangidwa pogwiritsa ntchito coke wa sulfure wotsika.

Needle coke ndi mtundu wa coke wokhala ndi mawonekedwe owoneka bwino a ulusi, kutsika kwamafuta owonjezera komanso graphitization yosavuta.Coke block ikathyoka, imatha kugawidwa mu tinthu tating'onoting'ono tating'onoting'ono (kutalika mpaka m'lifupi chiŵerengerocho chimakhala pamwamba pa 1.75) malinga ndi kapangidwe kake.Mapangidwe a anisotropic fibrous amatha kuwonedwa pansi pa ma microscope polarizing, motero amatchedwa singano coke.

The anisotropy wa thupi ndi makina katundu wa singano coke ndi zoonekeratu.Njira yofananira ndi kutalika kwa tinthu tating'onoting'ono timakhala ndi mphamvu yabwino yamagetsi ndi matenthedwe, ndipo coefficient ya kukula kwamafuta ndi yotsika.Panthawi yopangira extrusion, nkhwangwa zazitali za tinthu tating'onoting'ono timapangidwa molunjika ku extrusion.Chifukwa chake, singano coke ndiye chinthu chofunikira kwambiri popanga ma elekitirodi amphamvu kwambiri kapena ma graphite apamwamba kwambiri.Ma electrode a graphite opangidwa amakhala ndi mphamvu yocheperako, yocheperako yowonjezera kutentha, komanso kukana kugwedezeka kwamafuta.

Needle coke imagawidwa kukhala coke ya singano yopangidwa ndi mafuta opangidwa kuchokera ku zotsalira za petroleum ndi coke ya singano yopangidwa ndi malasha yopangidwa kuchokera ku phula la malasha oyeretsedwa.

Phula la malasha ndi chimodzi mwazinthu zazikulu zomwe zimagwiritsidwa ntchito popanga phula lamalasha.Ndi chisakanizo cha zosiyanasiyana ma hydrocarbons, wakuda mkulu mamasukidwe akayendedwe theka-olimba kapena olimba kutentha firiji, popanda chokhazikika kusungunuka, kufewetsa pambuyo kutentha, ndiyeno kusungunuka, ndi osalimba 1.25-1.35g/cm3.Malinga ndi kufewetsa mfundo yake lagawidwa otsika kutentha, zolimbitsa ndi kutentha phula atatu.Zokolola zapakati pa kutentha kwa asphalt ndi 54-56% za phula la malasha.Mapangidwe a phula la malasha ndi ovuta kwambiri, omwe amagwirizana ndi katundu wa malasha phula ndi zomwe zili mu heteroatoms, komanso zimakhudzidwa ndi makina a teknoloji ya coking ndi momwe amachitira phula la malasha.Pali ma index ambiri omwe amawonetsa momwe phula la malasha limapangidwira, monga phula lofewetsa, toluene insoluble matter (TI), quinoline insoluble matter (QI), coking value ndi rheological property ya malasha asphalt.

Mafuta a malasha amagwiritsidwa ntchito ngati binder ndi inregnating agent mumakampani a carbon.Makhalidwe ake ali ndi chikoka chachikulu pakupanga ndi mtundu wa zinthu za carbon.Binder asphalt nthawi zambiri amagwiritsa ntchito mfundo zochepetsera, mtengo wokwera kwambiri, kutentha kwambiri kwa beta resin sing'anga kapena kutentha kwapang'onopang'ono kusinthidwa phula, wothandizila kuti agwiritse ntchito mfundo yochepetsetsa, otsika QI, rheology ikhoza kukhala yabwino sing'anga kutentha phula.

• Kugwiritsa ntchito ma electrode a graphite

Graphite elekitirodi ali osiyanasiyana ntchito, makamaka ntchito magetsi ng'anjo steelmaking, ore ng'anjo matenthedwe, kukana ng'anjo, etc.

1. Graphite elekitirodi ntchito mu ng'anjo arc steelmaking

Main ogwiritsa ntchito ng'anjo magetsi steelmaking, magetsi ng'anjo steelmaking ndi ntchito graphite elekitirodi mu ng'anjo panopa, amphamvu panopa kumapeto m'munsi mwa elekitirodi kudzera mpweya Arc kumaliseche, ntchito Arc kwaiye kutentha kwa smelting, malinga ndi kukula kwa mphamvu ya ng'anjo yamagetsi, yokhala ndi ma diameter osiyanasiyana a maelekitirodi a graphite, kuti agwiritse ntchito mosalekeza maelekitirodi, maelekitirodi ndi ma elekitirodi olumikizana ndi ulusi, The elekitirodi ya graphite yomwe imagwiritsidwa ntchito popanga zitsulo imakhala pafupifupi 70-80% ya kuchuluka kwa ma elekitirodi a graphite.

2. Wogwiritsa ntchito mchere wotentha ng'anjo yamagetsi

Ng'anjo ya mchere imagwiritsidwa ntchito makamaka popanga ferroalloy, silicon yoyera, phosphorous yachikasu, matte ndi calcium carbide.Makhalidwe ake ndi kuti m'munsi mwa elekitirodi conductive m'manda mu mlandu, kotero kuwonjezera kutentha kwaiye ndi arc pakati mbale ndi mlandu, panopa kudzera mlandu ndi kukana kwa mlandu komanso kupanga kutentha, aliyense. tani ya pakachitsulo ayenera kudya pafupifupi 150kg/graphite elekitirodi, aliyense tani phosphorous chikasu ayenera kudya pafupifupi 40kg graphite elekitirodi.

3, kwa ng'anjo yotsutsa

Kupanga zinthu za graphite zokhala ndi ng'anjo ya graphitization, ng'anjo yamagalasi yosungunuka ndi kupanga ng'anjo ya silicon carbide ndi ng'anjo zotsutsana, ng'anjo yoyika ng'anjo yotopetsa, ndiyenso chinthu chotenthetsera.Nthawi zambiri, ma elekitirodi a graphite amalowetsedwa pakhoma la ng'anjo yamoto kumapeto kwa motowo, kotero kuti ma elekitirodi a conductive samadyedwa mosalekeza.

Komanso, chiwerengero chachikulu cha graphite elekitirodi akusowekapo amagwiritsidwanso ntchito pokonza mu zosiyanasiyana crucible, boti graphite, nkhungu otentha kuponyera ndi zingalowe magetsi ng'anjo Kutentha thupi ndi zinthu zina zapadera zoboola pakati.Mwachitsanzo, pamakampani opanga magalasi a quartz, ma elekitirodi a graphite opanda kanthu amafunikira 1t pakupanga chubu chilichonse cha 1t capacitor, ndipo ma elekitirodi 100 opanda kanthu amadyedwa pakupanga njerwa imodzi ya quartz.

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