Mu smelting ndondomeko, chifukwa dosing molakwika kapena kulipiritsa ndi kwambiri decarbonization ndi zifukwa zina, nthawi zina mpweya zili mu zitsulo kapena chitsulo si kukwaniritsa zofunika, ndiye m'pofunika carburize chitsulo kapena madzi chitsulo.Zinthu zazikulu zomwe zimagwiritsidwa ntchito popanga carburizing ndi ufa wa anthracite, chitsulo cha nkhumba cha carburized, electrode powder, petroleum coke powder, asphalt coke, makala a ufa ndi coke powder.Zomwe zimafunikira pa carburizer ndikuti kukweza kwa mpweya wokhazikika, kumakhala bwino, komanso kutsika kwa zonyansa zovulaza monga phulusa, zinthu zosasunthika ndi sulfure, ndibwino, kuti zisawononge chitsulo.
Kusungunula kwa ma castings kumagwiritsa ntchito recarburizer yapamwamba kwambiri pambuyo pakuwotcha kotentha kwa petroleum coke ndi zonyansa zochepa, chomwe ndiye ulalo wofunikira kwambiri pakuwotcha kwa carburizing.Ubwino wa recarburizer umatsimikizira mtundu wa chitsulo chamadzimadzi, komanso umatsimikizira ngati zotsatira za graphitization zitha kupezeka.Mwachidule, kuchepetsa iron shrinkage recarburizer kumagwira ntchito yofunika.
Chitsulo chonse chikasungunuka mu ng'anjo yamagetsi, recarburizer yomwe idapangidwa ndi graphit imakonda, ndipo recarburizer yomwe idajambulidwa pakutentha kwambiri imatha kusintha maatomu a kaboni kuchokera pamakonzedwe oyambira osokonekera kukhala ma sheet, ndipo pepala la graphite lingakhale labwino kwambiri. maziko a graphite nucleation kulimbikitsa graphitization.Chifukwa chake, tiyenera kusankha recarburizer yomwe yathandizidwa ndi kutentha kwambiri kwa graphitization.Chifukwa cha kutentha kwambiri kwa graphitization, zomwe zili sulfure zimapangidwira kuthawa kwa mpweya wa SO2 ndikuchepetsa.Chifukwa chake, sulfure zomwe zili mu recarburizer yapamwamba kwambiri ndizotsika kwambiri, nthawi zambiri zosakwana 0.05%, ndipo zabwino ndizochepera 0.03%.Panthawi imodzimodziyo, ichi ndi chizindikiro chosadziwika bwino ngati chathandizidwa ndi kutentha kwakukulu kwa graphitization komanso ngati graphitization ndi yabwino.Ngati recarburizer yosankhidwayo si graphitized pa kutentha kwakukulu, mphamvu ya nucleation ya graphite imachepetsedwa kwambiri, ndipo mphamvu ya graphitization imafooka, ngakhale mpweya womwewo ukhoza kutheka, koma zotsatira zake zimakhala zosiyana kwambiri.
Zomwe zimatchedwa recarburizer ndikuwonjezera bwino zomwe zili mu chitsulo chamadzimadzi mutatha kuwonjezera, kotero kuti zomwe zili mu kaboni wa recarburizer siziyenera kukhala zotsika kwambiri, apo ayi kuti mukwaniritse zomwe zili ndi kaboni, muyenera kuwonjezera zinthu zambiri kuposa zomwe zili pamwamba. -carbon recarburizer, yomwe mosakayikira imawonjezera kuchuluka kwa zinthu zina zosasangalatsa mu carburizer, kotero kuti chitsulo chamadzimadzi chitha kubweza bwino.
Zinthu zotsika za sulfure, nayitrogeni ndi haidrojeni ndizomwe zimalepheretsa kupanga ma pores a nayitrogeni m'magawo, kotero kuti nitrogen yopezeka mu recarburizer iyenera kukhala yotsika momwe mungathere.
Zizindikiro zina za recarburizer, monga kuchuluka kwa chinyezi, phulusa, volatiles, kutsika kwa carbon yokhazikika, kuchuluka kwa carbon yokhazikika, kotero kuchuluka kwa carbon yokhazikika, zomwe zili m'zigawo zovulazazi siziyenera kukhala. apamwamba.
Panjira zosiyanasiyana zosungunulira, mitundu ya ng'anjo ndi kukula kwa ng'anjo yosungunuka, ndikofunikiranso kusankha kukula koyenera kwa tinthu tating'onoting'ono, komwe kumatha kusintha bwino mayamwidwe ndi mayamwidwe a recarburizer muchitsulo chamadzimadzi, ndikupewa oxidation ndi kuyaka kwa carburizer chifukwa cha kukula kwa tinthu tating'ono.Tinthu kukula bwino: 100kg ng'anjo ndi zosakwana 10mm, 500kg ng'anjo ndi zosakwana 15mm, 1.5 tani ng'anjo ndi zosakwana 20mm, 20 tani ng'anjo ndi zosakwana 30mm.Mu smelting converter, pamene chitsulo cha carbon high chikugwiritsidwa ntchito, recarburizer yokhala ndi zonyansa zochepa imagwiritsidwa ntchito.Zofunikira za recarburizer zomwe zimagwiritsidwa ntchito pakupanga zitsulo zowombedwa pamwamba ndizokhazikika kwambiri, phulusa lotsika, losakhazikika ndi sulfure, phosphorous, nayitrogeni ndi zonyansa zina, ndi kukula kowuma, koyera, kocheperako.Mpweya wake wosasunthika C≥96%, wokhazikika ≤1.0%, S≤0.5%, chinyezi ≤0.5%, kukula kwa tinthu mu 1-5mm.Ngati tinthu tating'onoting'ono tating'onoting'ono tating'onoting'ono, ndizovuta kuwotcha, ndipo ngati ndizovuta kwambiri, zimayandama pamwamba pazitsulo zamadzimadzi ndipo sizovuta kutengeka ndi chitsulo chosungunuka.Pakuti kupatsidwa ulemu ng'anjo tinthu kukula 0.2-6mm, zitsulo ndi zina wakuda zitsulo tinthu kukula mu 1.4-9.5mm, mkulu mpweya zitsulo amafuna otsika nayitrogeni, tinthu kukula 0.5-5mm ndi zina zotero.Chofunikira chenichenicho malinga ndi mtundu wa ng'anjo yosungunula mtundu wa ng'anjo ndi zina zambiri chiweruzo ndi kusankha.
Nthawi yotumiza: Aug-25-2023