Ama-electrode e-graphite adlala indima ebalulekile ekwenzeni insimbi ye-arc furnace (EAF), imisebenzi yawo ingena kuyo yonke inqubo yokwenza insimbi futhi ivumela ukukhiqizwa kwensimbi okuphumelelayo nokuzinzile ikakhulukazi ngalezi zici ezilandelayo:
1. Ukuqhuba Kwamanje kanye Nokukhiqizwa Kwe-Arc
Umsebenzi Oyinhloko: Ama-electrode e-graphite asebenza “njengabathwali bamanje” kuma-EAF, ethula amandla kagesi aphezulu esithandweni ngokusebenzisa ukuhanjiswa kwawo okuhle kakhulu (ukumelana okuphansi). Lokhu kukhiqiza ama-arcs kagesi okushisa okuphezulu (adlula ama-3000°C) phakathi kwezihloko ze-electrode kanye nensimbi eqoshiwe noma izinto zokushaja.
Umsebenzi we-Arc: Ukushisa okukhulu okukhishwa yi-arcs kuncibilikisa ngqo insimbi elahliwe kanye nensimbi encibilikisiwe, kwakha insimbi ewuketshezi ngenkathi kunikeza isisekelo samandla sokusabela kokucwenga okulandelayo.
2. Ukumelana Nokushisa Okuphezulu Nokuzinza Kokushisa
Izakhiwo Zezinto: I-Graphite inezinga lokuncibilika elifinyelela ku-3650°C futhi igcina amandla aphezulu ngaphandle kokuguquka ngaphansi kwamazinga okushisa aphezulu (cishe u-2000–3000°C) kanye nokushaqeka okukhulu kokushisa endaweni ye-arc.
Izinzuzo Zokusebenzisa: Uma kuqhathaniswa nama-electrode ethusi (iphuzu lokuncibilika ~1083°C), ama-electrode e-graphite abonisa ukuzinza okuphezulu emazingeni okushisa aphezulu, amelana nokuthamba noma ukuncibilika. Lokhu kuqinisekisa ukusha okuqhubekayo, okuzinzile kwe-arc futhi kunciphisa imvamisa yokuvala isithando somlilo ukuze kugcinwe.
3. Ukungangeni Kwamakhemikhali Nokumelana Nokugqwala
I-Reactivity Ephansi: I-Graphite ibonisa ukusabela okuncane kwamakhemikhali ngensimbi encibilikisiwe kanye ne-slag emazingeni okushisa aphezulu, okuvimbela ukungeniswa kokungcola (isb., ikhabhoni, umoya-mpilo) okungalimaza ubumsulwa bensimbi.
Ukumelana Nokuvunda: Ukwelashwa okukhethekile (isb., ukufuthwa ngama-antioxidants) kwakha izendlalelo zokuvikela ezindaweni ze-graphite electrode, kunciphisa ukulahlekelwa kokuvunda okushisa okuphezulu futhi kwandise impilo yenkonzo.
4. Ukusetshenziswa Kwamandla Okusebenzayo Nokulondolozwa Kwamandla
Ukuthuthukiswa Kokusebenza Kahle Kokushisa: Ukuqhuba kahle kwama-electrode e-graphite kwenza kube lula ukuguqulwa kwamandla kagesi abe ukushisa okuphumelelayo, kunciphisa ukulahleka kwamandla kanye nokunciphisa imijikelezo yokuncibilikisa (ngokuvamile kunciphisa isikhathi sokuncibilikisa ngokushisa ngakunye ngo-10-20%).
Ukusebenza Kahle Kwezindleko: Ama-electrode e-graphite asebenzisa amandla amancane uma kuqhathaniswa nezinto ezisetshenziswayo futhi angasetshenziswa kabusha (ngama-electrode asele angaphinde asetshenziswe ukuze acutshungulwe kabusha), kunciphisa izindleko zokukhiqiza zizonke.
5. Ukusekelwa Kwesakhiwo Nokuguquguquka Kokusebenza
Amandla Okusebenza: Ama-electrode e-graphite kumele amelane nesisindo sawo, amandla kagesi kagesi, kanye nokudlidliza kokusebenza. Amandla awo aphezulu kanye nokuqina kwawo kuvimbela ukuqhekeka noma ukugoba ngesikhathi sokuncibilikisa.
Ukuzivumelanisa Nosayizi: Ama-electrode angenziwa ngokwezifiso ngamadayamitha ahlukahlukene (isb., 400–800 mm) kanye nobude ukuze avumelane namakhono e-EAF kanye nezidingo zenqubo, asekele ukukhiqizwa okuqhubekayo okukhulu.
6. Ukusimama Kwemvelo
Ukukhishwa Okuphansi Kwekhabhoni: Ukwenza ngensimbi kwe-EAF, okusebenzisa insimbi elahliwe njengempahla yokudla futhi kusebenzisa ukushisa okuphumelelayo kwama-electrode e-graphite, kunciphisa kakhulu ukumbiwa kwe-iron ore kanye nokusetshenziswa kwe-coke, ngaleyo ndlela kunciphisa ukukhishwa kwe-CO₂.
Ukuvuselelwa Kwezinsizakusebenza: Imikhiqizo engaphansi kwemikhiqizo efana nama-offcuts nama-electrode asele avela ekukhiqizweni kwe-graphite electrode ingaphinde isetshenziswe futhi, ngokuvumelana nezimiso zomnotho ojikelezayo.
Izimo Zokusebenza Eziwusizo
Izithando Zomlilo Ze-Arc Zikagesi Ezinamandla Aphezulu (UHP): Ama-electrode e-graphite amakhulu (isib., ≥750 mm) ahlanganiswe nemisinga ephezulu (amakhulu ezinkulungwane zama-ampere) avumela ukuncibilika nokucwengisiswa okusheshayo, afanele ukukhiqiza amazinga ensimbi anenani eliphezulu (isib., insimbi yeshidi lezimoto, insimbi ye-silicon).
Izitofu Zomlilo Ze-DC Electric Arc: Ama-electrode amakhulu e-graphite anciphisa ukusetshenziswa kwe-electrode kanye nokulahlekelwa amandla kagesi, okuthuthukisa ukusebenza kahle kokuncibilikisa.
Isifinyezo
Ama-electrode e-graphite, anokuqhutshwa kwawo okungavamile, ukuqina kokushisa okuphezulu, ukuzinza kwamakhemikhali, kanye nokuqina kwemishini, asebenza “njengenhliziyo” yokwenza insimbi ye-EAF. Athinta ngqo ukusebenza kahle kokuncibilikisa, ikhwalithi yensimbi, kanye nezindleko zokukhiqiza ngenkathi ethuthukisa ukongiwa kwamandla, ukunciphisa ukukhishwa kwegesi, kanye nokuvuselelwa kwezinsiza. Lokhu kuqhubekisela phambili imboni yensimbi ekuguqulweni okuluhlaza, okungenakhabhoni eningi. Njengoba isabelo sokwenziwa kwensimbi ye-EAF sikhuphuka (isb., umgomo we-“14th Five-Year Plan” waseShayina wokukhipha insimbi ye-EAF okungu-15%), isidingo sama-electrode e-graphite kanye nentuthuko yezobuchwepheshe kulo mkhakha sizoqhubeka nokukhula.
Isikhathi sokuthunyelwe: Julayi-17-2025