Ii-electrode zegrafiti zidlala indima ephambili ekwenzeni intsimbi ye-electric arc furnace (EAF), imisebenzi yazo ingena kuyo yonke inkqubo yokwenza intsimbi kwaye ivumela ukuveliswa kwentsimbi okusebenzayo nokuzinzileyo ngokuyintloko ngale miba ilandelayo:
1. Ukuqhuba kwangoku kunye nokuveliswa kwe-Arc
Umsebenzi oPhambili: Ii-electrode zeGraphite zisebenza “njengezithwali zangoku” kwii-EAF, zingenisa amandla ombane aphezulu kwi-oven ngokusebenzisa umbane wazo ogqwesileyo (ukumelana okuphantsi). Oku kuvelisa ii-arcs zombane ezishushu kakhulu (ezidlula i-3000°C) phakathi kweencopho ze-electrode kunye nentsimbi elahliweyo okanye izinto zokutshaja.
Umsebenzi we-Arc: Ubushushu obukhulu obukhutshwa yi-arcs bunyibilikisa ngokuthe ngqo intsimbi elahliweyo kunye nentsimbi enyibilikisiweyo, zenze intsimbi engamanzi ngelixa zibonelela ngesiseko samandla kwiimpendulo ezilandelayo zokucocwa.
2. Ukumelana nobushushu obuphezulu kunye nokuzinza kobushushu
Iimpawu zezinto: I-Graphite inendawo yokunyibilika efikelela kwi-3650°C kwaye igcina amandla aphezulu ngaphandle kokuguquka phantsi kobushushu obugqithisileyo (malunga ne-2000–3000°C) kunye noxinzelelo olukhulu lobushushu kwindawo ye-arc.
Iingenelo zokusetyenziswa: Xa kuthelekiswa nee-electrode zobhedu (inqanaba lokunyibilika ~1083°C), ii-electrode zegrafiti zibonisa uzinzo oluphezulu kumaqondo obushushu aphezulu, zimelana nokuthamba okanye ukunyibilika. Oku kuqinisekisa ukutsha okuqhubekayo, okuzinzileyo kwe-arc kwaye kunciphisa amaxesha okuvala kwesithando somlilo ukuze kugcinwe.
3. Ukungangeni kweekhemikhali kunye nokumelana nokugqwala
I-Reactivity ephantsi: I-Graphite ibonisa iimpembelelo ezincinci zeekhemikhali ngentsimbi enyibilikisiweyo kunye ne-slag kumaqondo obushushu aphezulu, nto leyo ethintela ukungena kokungcola (umz., ikhabhoni, ioksijini) okunokuphazamisa ubunyulu bentsimbi.
Ukumelana ne-Oxidation: Unyango olukhethekileyo (umz., ukufunxwa ngee-antioxidants) lwenza iileya zokukhusela kwiindawo ze-graphite electrode, nto leyo enciphisa ukulahleka kwe-oxidation kubushushu obuphezulu kwaye yandise ubomi benkonzo.
4. Ukusetyenziswa kwamandla ngokufanelekileyo kunye nokugcinwa kwamandla
Ukuphucula Ukusebenza Kobushushu: Ukuqhuba kwee-electrode ze-graphite kwenza ukuba amandla ombane aguqulwe abe bubushushu ngempumelelo, kunciphisa ukulahleka kwamandla kwaye kunciphise imijikelo yokunyibilikisa (ngokuvamile kunciphisa ixesha lokunyibilikisa ngobushushu nge-10-20%).
Ukusebenza kakuhle kweendleko: Ii-electrode ze-graphite zisebenzisa amandla amancinci xa kuthelekiswa nezinye izinto kwaye zinokusetyenziswa kwakhona (kunye nee-electrode ezishiyekileyo ezingaphelelanga ezinokuphinda zisetyenziswe ukuze ziphinde zisetyenziswe), nto leyo enciphisa iindleko zemveliso iyonke.
5. Inkxaso yoLwakhiwo kunye nokuguquguquka kokusebenza
Amandla Oomatshini: Ii-electrode zeGraphite kufuneka zikwazi ukumelana nobunzima bazo, amandla ombane, kunye nokungcangcazela koomatshini. Amandla azo aphezulu kunye nokuqina kwazo kuthintela ukwaphuka okanye ukugoba ngexesha lokunyibilikisa.
Ukuguquguquka kobukhulu: Ii-electrode zingenziwa ngokwezifiso kwiidayamitha ezahlukeneyo (umz., 400–800 mm) kunye nobude ukuze zihambelane namandla e-EAF kunye neemfuno zenkqubo, zixhasa imveliso enkulu eqhubekayo.
6. Uzinzo lweNdalo
Ukukhutshwa kweCarbon esezantsi: Ukwenza intsimbi ye-EAF, esebenzisa intsimbi elahliweyo njengesondlo kwaye isebenzisa ukufudumeza okusebenzayo kwee-electrode ze-graphite, kunciphisa kakhulu ukumbiwa kwe-iron ore kunye nokusetyenziswa kwe-coke, ngaloo ndlela kunciphisa ukukhutshwa kwe-CO₂.
Ukuphinda kusetyenziswe izixhobo: Iimveliso ezinje ngee-offcuts kunye nee-residual electrodes ezivela kwimveliso ye-graphite electrode zinokuphinda zisetyenziswe, zihambelane nemigaqo ye-circular economy.
Imizekelo yokusetyenziswa okusebenzayo
Ii-Ultra-High-High-Power Electric Arc Furnaces (UHP): Ii-electrode zegrafiti ezinkulu (umz., ≥750 mm) ezidityaniswe nemisinga ephezulu (amakhulu amawaka ee-ampere) zivumela ukunyibilika nokucocwa ngokukhawuleza, zilungele ukuvelisa amanqanaba entsimbi axabisekileyo (umz., isinyithi seemoto, isinyithi sesilicon).
Ii-DC Electric Arc Furnaces: Ii-electrode ezinkulu zegrafiti enye zinciphisa ukusetyenziswa kwe-electrode kunye nokulahleka kwamandla ombane, nto leyo ephucula ukusebenza kakuhle kokunyibilikisa.
Isishwankathelo
Ii-electrode zegrafiti, ezinokuqhuba kwazo ngendlela egqwesileyo, ukuqina kobushushu obuphezulu, uzinzo lweekhemikhali, kunye nokuqina koomatshini, zisebenza njenge "ntliziyo" yokwenza intsimbi ye-EAF. Zichaphazela ngokuthe ngqo ukusebenza kakuhle kokunyibilikisa, umgangatho wentsimbi, kunye neendleko zemveliso ngelixa ziqhubela phambili ulondolozo lwamandla, ukunciphisa ukukhutshwa komoya, kunye nokuphinda kusetyenziswe izixhobo. Oku kuqhuba ishishini lentsimbi ukuya kutshintsho oluluhlaza, olusebenzisa ikhabhoni ephantsi. Ngenxa yokwanda kwesabelo sokwenza intsimbi ye-EAF (umz., injongo "yeSicwangciso seMinyaka emihlanu se-14" saseTshayina semveliso yentsimbi ye-15% ye-EAF), imfuno yee-electrode zegrafiti kunye nophuhliso lobuchwepheshe kweli candelo iya kuqhubeka ikhula.
Ixesha leposi: Julayi-17-2025