"Imarike ye-graphite electrode yehlabathi ibixabisa i-9.13 yeebhiliyoni zeedola zaseMelika ngo-2018 kwaye kulindeleke ukuba ifikelele kwi-16.48 yeebhiliyoni zeedola zaseMelika ngo-2025, kunye nesantya sokukhula sonyaka esidibeneyo se-8.78% ngexesha lexesha eliqikelelweyo."
Ngenxa yokwanda kwemveliso yentsimbi kunye nophuhliso lweziseko zophuhliso zanamhlanje, imfuno yobunjineli kunye nezixhobo zokwakha iyaqhubeka nokukhula, ezinye zezinto ezibalulekileyo eziqhuba ukukhula kwemarike yehlabathi ye-graphite electrode.
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Ii-electrode zegraphite zizinto zokufudumeza ezisetyenziswa kwii-oven ze-arc zombane ukwenza intsimbi ngeengcongolo, iimoto ezindala kunye nezinye izixhobo. Ezi electrode zibonelela ngobushushu kwintsimbi ekrazukileyo ukuze iyinyibilikise ukuze ivelise intsimbi entsha. Ii-oven ze-arc zombane zisetyenziswa kakhulu kumashishini emveliso yentsimbi kunye ne-aluminium kuba azibizi kakhulu ukuze zenziwe. Ii-electrode zegraphite zinokudityaniswa zibe zii-cylinders kuba ziyinxalenye yesigqubuthelo se-oven yombane. Xa amandla ombane anikezelwayo edlula kwezi electrode zegraphite, kwakheka i-arc yombane enamandla, inyibilikise intsimbi ekrazukileyo. Ngokwemfuno yobushushu kunye nobukhulu besithando sombane, ii-electrode ezinobukhulu obahlukeneyo zingasetyenziswa. Ukuze kuveliswe itoni e-1 yentsimbi, kufuneka malunga ne-3 kg yee-electrode zegraphite. Ekwenziweni kwentsimbi, igraphite inako ukumelana nobushushu obuphezulu kangaka, ngoko ke ubushushu bencam ye-electrode bufikelela malunga ne-3000 degrees Celsius. Iinaliti kunye ne-petroleum coke zezona zinto ziphambili ezisetyenziselwa ukwenza ii-electrode zegraphite. Kuthatha iinyanga ezintandathu ukwenza ii-electrode zegraphite, kwaye emva koko iinkqubo ezithile, kubandakanya ukubhaka nokubhaka kwakhona, zisetyenziselwa ukuguqula i-coke ibe yi-graphite. Ii-electrode zegrafiti kulula ukuzenza kunee-electrode zobhedu, kwaye isantya sokwenza sikhawuleza kuba asidingi iinkqubo ezongezelelweyo ezifana nokusila ngesandla.
Ukwakhiwa kwemarike ye-graphite electrode, imfuno ekhulayo yentsimbi kwimizi-mveliso yeoyile negesi kunye neemoto kulindeleke ukuba ikhuthaze uphuhliso lwemarike ye-graphite electrode. Ngaphezulu kwe-50% yentsimbi eveliswayo kwihlabathi liphela isetyenziswa kumashishini okwakha kunye neziseko zophuhliso. Ingxelo ibandakanya izinto ezibangela oko, imida, amathuba, kunye neendlela zamva nje ezinegalelo ekukhuleni kwemarike ngexesha lohlalutyo. Ingxelo ihlalutya ngokweenkcukacha iintlobo kunye nokusetyenziswa kokwahlulwahlulwa kwemimandla.
I-graphite electrode yenye yee-conductors, kwaye yinxalenye ebalulekileyo yenkqubo yokwenza intsimbi. Kule nkqubo, intsimbi elahliweyo iyanyibilikiswa kwisithando sombane se-arc kwaye iphinda isetyenziswe. I-graphite electrode engaphakathi kwesithando yayinyibilikisa intsimbi. I-graphite inomoya ophezulu wokushisa, kwaye ayitshisi kakhulu kwaye ayichaphazeleki. Inokumelana okuphantsi, oko kuthetha ukuba inokuqhuba imisinga emikhulu efunekayo ukunyibilikisa intsimbi. I-graphite electrode isetyenziswa kakhulu kwisithando sombane se-arc (EAF) kunye nesithando sombane se-ladle (LF) kwimveliso yentsimbi, i-ferroalloy, i-silicon metal graphite electrode isetyenziswa kwisithando sombane se-arc (EAF) kunye nesithando sombane se-ladle (LF) kwimveliso yentsimbi, imveliso ye-ferroalloy, imveliso yesinyithi se-silicon kunye nenkqubo yokunyibilikisa.
Ingxelo yemarike ye-graphite electrode yehlabathi igubungela abadlali abaziwayo abafana neGrafTech, iFangda Carbon China, iSGL Carbon Germany, iShowa Denko, iGraphite India, iHEG India, iTokai Carbon Japan, iNippon Carbon Japan, iSEC Carbon Japan, njl. I-American GrafTech, iFangda Carbon China kunye neGraphite India zinamandla emveliso apheleleyo angama-454,000 eetoni.
Ixesha lokuthumela: Matshi-04-2021