Indlela yokukhetha i-recarburizer ephezulu ye-steelmaking
Kwinkqubo ye-smelting, ngenxa ye-batching engafanelekanga okanye ukutshaja kunye ne-decarburization ngokugqithiseleyo, ngamanye amaxesha umxholo wekhabhoni kwintsimbi okanye isinyithi awuhambisani neemfuno ezilindelekileyo.Ngeli xesha, ikhabhoni kufuneka yongezwe kwintsimbi okanye isinyithi esinyibilikisiweyo.Izinto eziphambili eziqhelekileyo ezisetyenziselwa i-carbonization yi-anthracite powder, i-carbonized pig iron, i-electrode powder, i-petroleum coke powder, i-pitch coke, i-charcoal powder kunye ne-coke powder.Iimfuno ze-recarburizers kukuba ukuphakama kwekhabhoni esisigxina, kungcono, kwaye kusezantsi umxholo wokungcola okuyingozi njengothuthu, into eguqukayo kunye nesulfure, kungcono, ukuze ungangcolisi intsimbi.
Ukunyibilikiswa kwe-castings kusebenzisa i-recarburizers ekumgangatho ophezulu emva kokubalwa kobushushu obuphezulu be-petroleum coke enobumdaka obumbalwa, eyona nto ibalulekileyo kwinkqubo yokubuyisela kwakhona.Umgangatho we-recarburizer umisela umgangatho wentsimbi etyhidiweyo, kwaye iphinda inqume ukuba isiphumo esihle se-graphitization sinokufumaneka.Ngamafutshane, ukunciphisa ukushwabana kwentsimbi enyibilikisiweyo kunye ne-recarburizers kudlala indima ebalulekileyo.
Xa yonke intsimbi ye-scrap inyibilikiswa kwiziko lombane, i-graphitized recarburizer iyakhethwa.Emva konyango lwe-graphitization yobushushu obuphezulu, iiathom zekhabhoni zinokutshintsha ukusuka kulungiselelo lwangaphambili lokuphazamiseka ukuya kulungiselelo lweflake, kwaye i-flake graphite ingaba njengegraphite.Eyona nto ingundoqo ye-core, ukwenzela ukuba kube lula ukukhuthazwa kwe-graphitization.Ke ngoko, kufuneka sikhethe i-recarburizer eye yafumana igraphitization yobushushu obuphezulu.Ngenxa yonyango oluphezulu lwe-graphitization yokushisa, umxholo wesulfure uyancitshiswa ngokuphunyuka kwegesi ye-SO2.Ke ngoko, ii-recarburizers ezikumgangatho ophezulu ziqulathe umxholo wesulfure ophantsi kakhulu, w(s) ngokuqhelekileyo ungaphantsi kwe-0.05%, kwaye ii-w ezingcono zingaphantsi kwe-0.03%.Kwangaxeshanye, oku kukwasalathiso esingathanga ngqo sokugweba ukuba ngaba sele kunyangelwe ubushushu obuphezulu be-graphitization nokuba i-graphitization ilungile.Ukuba i-recarburizer ekhethiweyo ayizange ifumane unyango lwe-graphitization yobushushu obuphezulu, isakhono se-nucleation segraphite siya kuncitshiswa kakhulu, kwaye isakhono se-graphitization siya kuba buthathaka.Nangona umlinganiselo ofanayo wekhabhoni unokufumaneka, iziphumo zihluke ngokupheleleyo.
Into ebizwa ngokuba yi-recarburizer kukwandisa ngokufanelekileyo umxholo wekhabhoni kwintsimbi enyibilikisiweyo emva kokongeza, ngoko umxholo wekhabhoni osisigxina we-recarburizer kufuneka ungabi phantsi kakhulu, kungenjalo ukufezekisa umxholo othile wekhabhoni, kuyafuneka ukongeza ikhabhoni ephezulu kakhulu. umxholo.Iisampulu ezongezelelekileyo ze-recarburizer ngokungathandabuzekiyo ziya konyusa inani lezinye izinto ezingathandekiyo kwi-recarburizer, ukuze isinyithi esinyibilikisiweyo singakwazi ukufumana izibonelelo ezingcono.
I-sulphur ephantsi, i-nitrogen kunye ne-hydrogen izinto zingundoqo ekuthinteleni i-nitrogen pores kwi-castings, ngoko ke uphantsi umxholo we-nitrogen we-recarburizer, ngcono.Ezinye izalathi ze-recarburizer, ezifana nokufuma, uthuthu, kunye nezinto eziguquguqukayo, okukhona usezantsi umyinge wekhabhoni engatshintshiyo, kokukhona uphezulu isixa sekhabhoni engatshintshiyo, ngoko okukhona uphezulu umyinge wekhabhoni engatshintshiyo, umxholo wale nxalenye inobungozi kufuneka ungabikho. phezulu.
Ngokweendlela ezahlukeneyo zokunyibilikisa, iintlobo zeziko kunye nobungakanani beziko zokunyibilikisa, kubaluleke kakhulu ukukhetha ubungakanani besuntswana elifanelekileyo le-recarburizer, enokuphucula ngokufanelekileyo isantya sokufunxa kunye nesantya sokufunxa kwentsimbi etyhidiweyo kwi-recarburizer, kwaye unqande ingxaki yobungakanani bamasuntswana amancinane ngokugqithisileyo.Ibangelwa kukutshiswa kwe-oxidative ye-recarburizers.
Ubungakanani bayo besuntswana kukhethwa: 100kg eziko ngaphantsi kwe-10mm, 500kg eziko ngaphantsi kwe-15mm, 1.5 ton eziko ngaphantsi kwe-20mm, 20 ton eziko ngaphantsi kwe-30mm.Kwi-converter smelting, xa kusetyenziswa i-carbon steel high, i-recarburizer enokungcola okumbalwa isetyenziswa.Iimfuno ze-recarburizers kwi-top-blown converter steelmaking yikhabhoni ephezulu esisigxina, uthuthu oluphantsi, oluguquguqukayo kunye nesulfure, i-phosphorus, i-nitrogen kunye nezinye izinto ezingcolileyo, ezomileyo, ezicocekileyo, kunye nobukhulu obuphakathi.Ikhabhoni yayo emiselweyo C ≥ 96%, into eguqukayo ≤ 1.0%, S ≤ 0.5%, umswakama ≤ 0.5%, ubungakanani be-particle 1-5mm.Ukuba ubungakanani bamasuntswana bulungile kakhulu, kulula ukutshisa, kwaye ukuba burhabaxa kakhulu, budada phezu kwentsimbi etyhidiweyo kwaye ayifuntshwa lula yintsimbi etyhidiweyo.Kwiziko lokungeniswa, ubukhulu be-particle yi-0.2-6mm, apho intsimbi kunye nezinye iinqununu zegolide ezimnyama ziyi-1.4-9.5mm, i-carbon steel high idinga i-nitrogen ephantsi, kunye nobukhulu be-particle 0.5-5mm, njl. uhlobo oluthile lwesithando sokunyibilikisa i-workpiece Iintlobo kunye nezinye iinkcukacha zesigwebo esithile kunye nokukhetha.
