Iimathiriyeli ekrwada yokuvelisa i-electrode yegraphite ziquka i-petroleum coke, inaliti ye-coke kunye ne-coal tar pitch:

I-petroleum coke yimveliso eqinileyo enokutsha efunyenwe ngokucofa intsalela yepetroleum kunye nepetroleum pitch.Umbala umnyama kunye ne-porous, into ephambili yikhabhoni, kwaye umxholo womlotha uphantsi kakhulu, ngokuqhelekileyo ungaphantsi kwe-0.5%.Ipetroleum coke luhlobo lwekhabhoni eyenziwe lula.I-petroleum coke isetyenziswa kakhulu kwishishini lemichiza, isinyithi kunye namanye amashishini.Yeyona mveliso iphambili yokuveliswa kweemveliso zegraphite ezenziweyo kunye neemveliso zekhabhoni zealuminium ye-electrolytic.

Ngokweqondo lokushisa lobushushu, i-petroleum coke inokwahlulwa ibe yicoke eluhlaza kunye necoke ecoliweyo.I-coke yangaphambili i-petroleum coke efunyenwe ngokulibaziseka kokupheka, equkethe inani elikhulu lezinto eziguquguqukayo kwaye inamandla aphantsi omatshini.I-coke ene-calcined ifunyenwe ngokubala i-coke eluhlaza.Uninzi lwee-refineries e-China zivelisa kuphela i-coke eluhlaza, kwaye ininzi yemisebenzi ye-calcination iqhutyelwa kwizityalo zekhabhoni.

I-petroleum coke inokohlulwa ibe yicoke ephezulu yesulfure (ngaphezulu kwe-1.5% yomxholo wesulfure), icoke yesulfure ephakathi (0.5% -1.5% umxholo wesulfure) kunye necoke ephantsi yesulfure (ngaphantsi kwe-0.5% yomxholo wesulfure).Iielectrode zegraphite kunye nezinye iimveliso zegraphite ezenziweyo ziveliswa ngokubanzi kusetyenziswa icoke enesulfure ephantsi.

Inaliti ye-coke luhlobo lwe-coke ene-fibrous texture ebonakalayo, i-coefficient ephantsi yokwandisa i-thermal kunye ne-graphitization elula.Xa i-coke block iphukile, inokwahlulwa ibe ngamasuntswana omde kunye nomncinci (ubude ukuya kububanzi bobubanzi bungaphezulu kwe-1.75) ngokwendlela yokuthungwa.Isakhiwo se-anisotropic fibrous sinokubonwa phantsi kwe-microscope ye-polarizing, ngoko ibizwa ngokuba yi-needle coke.

I-anisotropy yezinto ezibonakalayo kunye nezomatshini ze-coke yenaliti ibonakala kakhulu.Isalathiso esihambelana ne-axis ende yeengqungquthela inombane kunye ne-thermal conductivity, kwaye i-coefficient yokwandiswa kwe-thermal iphantsi.Ngethuba lokubunjwa kwe-extrusion, ii-axes ezide zeentlobo ezininzi zicwangciswe ngendlela ye-extrusion.Ke ngoko, inaliti ye-coke yeyona nto iphambili yemathiriyeli ekrwada yokwenza amandla aphezulu okanye i-electrode yegraphite yamandla aphezulu.Ii-electrode zegraphite ezenziweyo zine-resistivity ephantsi, i-coefficient encinci yokwandisa i-thermal, kunye nokuchasana kakuhle kwe-thermal shock.

Inaliti ye-coke yohlulwe kwi-oyile-based coke yenaliti eveliswe kwintsalela ye-petroleum kunye ne-coke yenaliti esekwe ngamalahle eveliswe kwi-pitch yetela yamalahle esulungekisiweyo.

Itha yamalahle yenye yeemveliso eziphambili zokusetyenzwa nzulu kwetela.Ingumxube weentlobo ngeentlobo ze-hydrocarbons, i-viscosity emnyama ephezulu i-semi-solid okanye iqinile kwiqondo lokushisa, ngaphandle kwendawo yokunyibilika esisigxina, ukuthambisa emva kobushushu, kwaye emva koko kunyibilika, kunye nobuninzi be-1.25-1.35g / cm3.Ngokwendawo yayo yokuthambisa yahlulwe kubushushu obuphantsi, obuphakathi kunye nobushushu obuphezulu be-asphalt ezintathu.Imveliso ye-asphalt yobushushu obuphakathi yi-54-56% yetha yamalahle.Ukubunjwa kwe-bitumen yamalahle kuyinkimbinkimbi kakhulu, ehambelana neepropati ze-tar yamalahle kunye nomxholo we-heteroatoms, kwaye iphinda ichaphazeleke yinkqubo yeteknoloji ye-coking kunye neemeko zokucubungula i-tar yamalahle.Kukho izalathisi ezininzi zokubonisa iimpawu ze-asphalt yamalahle, njenge-asphalt softening point, i-toluene insoluble matter (TI), i-quinoline insoluble matter (QI), ixabiso le-coking kunye nepropati ye-rheological ye-asphalt yamalahle.

I-pitch yamalahle isetyenziswa njenge-binder kunye ne-ejenti yokumitha kwishishini lekhabhoni.Iimpawu zayo zinempembelelo enkulu kwinkqubo yokuvelisa kunye nomgangatho weemveliso zekhabhoni.I-asphalt ye-binder ngokubanzi isebenzisa indawo yokuthambisa ephakathi, ixabiso eliphezulu lokupheka, i-beta ephezulu ye-resin yobushushu obuphakathi okanye i-asphalt ehlaziyiweyo yobushushu obuphakathi, i-arhente yokumitha ukusebenzisa indawo yokuthambisa esezantsi, i-QI ephantsi, i-rheology ingaba yi-asphalt elungileyo yobushushu obuphakathi.

• Ukusetyenziswa kwe-electrode yegraphite

I-electrode ye-graphite inoluhlu olubanzi lokusetyenziswa, ngokukodwa isetyenziswe kwi-steelmaking yesithando sombane, i-ore ore thermal furnace, isithando somlilo sokumelana, njl.

1. I-electrode yegraphite isetyenziswa kwi-arc steelmaking furnace

Abasebenzisi abaphambili bentsimbi yombane, ukwenza intsimbi yombane kukusetyenziswa kwegraphite electrode kwiziko langoku, langoku elomeleleyo kwisiphelo esisezantsi se-electrode ngokukhutshwa kwe-arc yegesi, ukusetyenziswa kobushushu obuveliswe yi-arc ekunyibilikiseni, ngokobukhulu be-arc. umthamo wesithando sombane, kunye nobubanzi obuhlukeneyo be-electrode yegraphite, ukwenzela ukuba kusetyenziswe ngokuqhubekayo i-electrode, i-electrode nge-electrode thread joint joint, I-electrode ye-graphite esetyenziswe kwi-akhawunti ye-steelmaking malunga ne-70-80% yesixa esipheleleyo se-graphite electrode.

2. Umsebenzisi weziko lombane lobushushu bamaminerali

I-mineral furnace isetyenziselwa ukuveliswa kwe-ferroalloy, i-silicon ecocekileyo, i-phosphorus ephuzi, i-matte kunye ne-calcium carbide.Iimpawu zayo kukuba indawo engezantsi ye-electrode conductive ingcwatyelwe kwintlawulo, ngoko ke ukongeza kubushushu obuveliswa yi-arc phakathi kwepleyiti kunye nentlawulo, i-current ngokusebenzisa intlawulo ngokuchasana kwentlawulo nayo ivelisa ubushushu, nganye itoni yesilicon idinga ukusebenzisa malunga ne-150kg / i-electrode yegraphite, itoni nganye ye-phosphorus emthubi kufuneka idle malunga ne-40kg ye-electrode yegraphite.

3, kwiziko lokumelana

Ukuveliswa kweemveliso zegraphite ngesithando somlilo, ukunyibilika kweglasi yomlilo kunye nokuveliswa kwesithando se-silicon carbide eziko lokumelana, isithando somlilo esifakwe ukuxhathisa ukufudumeza, nayo yinto yokufudumeza.Ngokuqhelekileyo, i-electrode ye-graphite eqhubayo ifakwe kwindonga yentloko yesithando somlilo ekupheleni kweziko, ngoko ke i-electrode conductive ayisoloko idliwe.

Ukongeza, inani elikhulu lee-graphite electrode blanks zikwasetyenziselwa ukusetyenzwa kwiintlobo ngeentlobo ze-crucible, i-graphite boat, i-hot casting mold kunye ne-vacuum yombane wokufudumeza isithando sombane kunye nezinye iimveliso ezikhethekileyo.Umzekelo, kushishino lweglasi yequartz, i-10t ye-graphite electrode engenanto iyafuneka kwi-1t nganye yokuveliswa kwetyhubhu ye-capacitor, kunye ne-100kg ye-electrode engenanto isetyenziselwa yonke i-1t ye-quartz yemveliso yezitena.

#carbon raiser #graphite electrode #umlutha wekhabhoni # graphite petroleum coke # inaliti coke #petroleum coke