Ezinhlotsheni ezahlukene zemikhiqizo ye-carbon ne-graphite electrode, ngokusho kokusetshenziswa kwayo okuhlukene, kunezidingo ezikhethekile zokusetshenziswa kanye nezinkomba zekhwalithi. Uma sicubungula ukuthi yiluphi uhlobo lwezinto zokusetshenziswa okufanele zisetshenziselwe umkhiqizo othile, kufanele siqale sifunde ukuthi singahlangabezana kanjani nalezi zidingo ezikhethekile kanye nezinkomba zekhwalithi.
(1) Ukukhethwa kwezinto ezingavuthiwe zokuqhuba i-graphite electrode esetshenziswa kunqubo ye-electrometallurgical efana ne-EAF steelmaking.
I-electrode conductive graphite electrode esetshenziswa enqubweni ye-electrometallurgical efana ne-EAF steelmaking kumele ibe ne-conductivity enhle, amandla afanele wemishini, ukumelana kahle nokucisha nokushisa ekushiseni okuphezulu, ukumelana nokugqwala nokuqukethwe okuphansi kokungcola.
① Ama-electrode e-graphite ekhwalithi ephezulu akhiqizwa nge-petroleum coke, i-pitch coke nezinye izinto zokusetshenziswa zomlotha ophansi. Kodwa-ke, ukukhiqizwa kwe-electrode ye-graphite kudinga imishini eyengeziwe, ukugeleza kwenqubo ende kanye nobuchwepheshe obuyinkimbinkimbi, futhi ukusetshenziswa kwamandla ka-1 t graphite electrode kungu-6000 ~ 7000 kW · H.
② Ikhwalithi ephezulu ye-anthracite noma i-coke ye-metallurgical isetshenziswa njengempahla eluhlaza ukukhiqiza i-carbon electrode. Ukukhiqizwa kwe-carbon electrode akudingi imishini ye-graphitization, nezinye izinqubo zokukhiqiza zifana nokukhiqizwa kwe-graphite electrode. I-conductivity ye-carbon electrode yimbi kakhulu kune-graphite electrode. I-resistivity ye-carbon electrode ngokuvamile iphakeme izikhathi ezingu-2-3 kune-graphite electrode. Okuqukethwe komlotha kuyahlukahluka ngekhwalithi yezinto ezingavuthiwe, ezingaba ngu-10%. Kodwa ngemva kokuhlanza okukhethekile, okuqukethwe komlotha we-anthracite kungancishiswa kube ngaphansi kuka-5%. Okuqukethwe komlotha womkhiqizo kungancishiswa kufinyelele cishe ku-1.0% uma umkhiqizo uphinde ufakwe i-graphitized. I-carbon electrode ingasetshenziselwa ukuncibilikisa insimbi evamile ye-EAF ne-ferroalloy
③ Ukusebenzisa i-graphite yemvelo njengempahla eluhlaza, i-electrode ye-graphite yemvelo yakhiqizwa. I-graphite yemvelo ingasetshenziswa kuphela ngemva kokukhethwa ngokucophelela futhi okuqukethwe kwayo komlotha kuncishisiwe. Ukumelana ne-electrode ye-graphite yemvelo cishe kuphindwe kabili kune-electrode eyi-graphitized. Kodwa amandla emishini aphansi, kulula ukuphuka uma usebenzisa. Endaweni enokukhiqiza okuningi kwe-graphite yemvelo, i-electrode ye-graphite yemvelo ingakhiqizwa ukuhlinzeka nge-EAF encane ukuncibilikisa insimbi evamile ye-EAF. Lapho usebenzisa i-graphite yemvelo ukukhiqiza i-electrode conductive, okokusebenza nobuchwepheshe kulula ukukuxazulula futhi kusebenze kahle.
④ I-electrode ye-graphite isetshenziselwa ukukhiqiza i-electrode evuselelwe (noma i-electrode ephukile enemifanekiso) ngokuchotshozwa nokugaya imfucumfucu yokusika noma imikhiqizo yemfucuza. Okuqukethwe komlotha womkhiqizo awuphezulu (cishe i-1%), futhi ukuqhutshwa kwayo kubi kakhulu kune-electrode ye-graphitized. I-resistivity yayo cishe izikhathi ezingu-1.5 zaleyo ye-electrode eyi-graphitized, kodwa umphumela wayo wokusebenzisa ungcono kunalowo we-electrode ye-graphite yemvelo. Nakuba kulula ukuqonda ubuchwepheshe kanye nemishini yokukhiqiza i-electrode evuselelwe, umthombo wezinto ezibonakalayo we-graphitization unomkhawulo, ngakho-ke le ndlela akuyona isiqondiso sokuthuthukiswa.
Isikhathi sokuthumela: Jun-11-2021