Kwiintlobo ezahlukeneyo zekhabhoni kunye neemveliso ze-electrode zegraphite, ngokusetyenziswa kwazo ezahlukeneyo, kukho iimfuno ezikhethekileyo zokusetyenziswa kunye nezikhombisi zekhwalithi. Xa siqwalasela ukuba luhlobo luni lwemathiriyeli ekrwada ekufuneka isetyenziswe kwimveliso ethile, kufuneka siqale sifunde indlela yokuhlangabezana nezi mfuno zikhethekileyo kunye nezikhombisi zomgangatho.
(1) Ukukhethwa kwezinto ezisetyenziselwa ukwenza i-electrode yegraphite esetyenziswa kwinkqubo ye-electrometallurgical efana ne-EAF steelmaking.
I-electrode conductive graphite electrode esetyenziswa kwinkqubo ye-electrometallurgical efana ne-EAF steelmaking kufuneka ibe ne-conductivity efanelekileyo, amandla afanelekileyo omatshini, ukuchasana kakuhle nokucima kunye nokufudumala kwiqondo lokushisa eliphezulu, ukuxhathisa ukubola kunye nomxholo ophantsi wokungcola.
① Umgangatho ophezulu weeelectrode zegraphite ziveliswa kwi-petroleum coke, pitch coke kunye nezinye izinto ezisezantsi zothuthu. Nangona kunjalo, ukuveliswa kwe-electrode yegraphite kufuna izixhobo ezingaphezulu, ukuhamba kwenkqubo ende kunye neteknoloji enzima, kunye nokusetyenziswa kwamandla e-1 t graphite electrode yi-6000 ~ 7000 kW · H.
② Umgangatho ophezulu we-anthracite okanye i-coke ye-metallurgical isetyenziswe njengento eluhlaza ukuvelisa i-carbon electrode. Ukuveliswa kwe-carbon electrode ayifuni izixhobo ze-graphitization, kunye nezinye iinkqubo zokuvelisa zifana nokuveliswa kwe-graphite electrode. I-conductivity ye-carbon electrode imbi kakhulu kune-graphite electrode. Ukuxhathisa kwe-carbon electrode ngokuqhelekileyo kumaxesha angama-2-3 aphezulu kune-graphite electrode. Umxholo womlotha uyahluka kunye nomgangatho wezinto eziluhlaza, malunga ne-10%. Kodwa emva kokucoca okukhethekileyo, umxholo womlotha we-anthracite unokuncitshiswa ube ngaphantsi kwe-5%. Isiqulatho sothuthu semveliso sinokuncitshiswa sibe malunga ne-1.0% ukuba imveliso iphinda ifakwe igraphiti. I-electrode yeCarbon ingasetyenziselwa ukunyibilikisa intsimbi eqhelekileyo ye-EAF kunye ne-ferroalloy
③ Ukusebenzisa igraphite yendalo njengemathiriyeli ekrwada, i-electrode yegraphite yendalo yenziwa. Igraphite yendalo ingasetyenziselwa kuphela emva kokukhethwa ngokucokisekileyo kwaye umxholo wayo womlotha uyancitshiswa. I-resistivity ye-electrode ye-graphite yendalo imalunga nokuphindwe kabini kune-electrode ye-graphitized. Kodwa amandla oomatshini aphantsi, kulula ukuwaphula xa usebenzisa. Kwindawo enemveliso yegraphite yendalo eninzi, i-electrode ye-graphite yendalo inokuveliswa ukubonelela nge-EAF encinci ukunyibilikisa intsimbi eqhelekileyo ye-EAF. Xa usebenzisa igraphite yendalo ukuvelisa i-electrode conductive, izixhobo kunye neteknoloji kulula ukuyicombulula kunye nenkosi.
④ I-electrode ye-graphite isetyenziselwa ukuvelisa i-electrode ehlaziyiweyo (okanye i-electrode eyaphukileyo ye-graphitized) ngokutyumza kunye nokusila i-debris yokusika okanye iimveliso zenkunkuma. Umxholo womlotha wemveliso awuphezulu (malunga ne-1%), kwaye ukuqhuba kwayo kubi kakhulu kunoko kwe-electrode ye-graphitized. Ukumelana kwayo malunga namaxesha e-1.5 ye-electrode ye-graphitized, kodwa umphumo wayo wesicelo ungcono kune-electrode ye-graphite yendalo. Nangona kulula ukuqonda itekhnoloji kunye nezixhobo zokuvelisa i-electrode ehlaziyiweyo, umthombo wezinto ezikrwada wegraphitization ulinganiselwe, ke le ndlela ayilulo ulwalathiso lophuhliso.
Ixesha lokuposa: Jun-11-2021