Inqubo yokukhiqiza izinto zekhabhoni iwubunjiniyela besistimu elawulwa ngokuqinile, ukukhiqizwa kwe-graphite electrode, izinto ezikhethekile zekhabhoni, i-aluminium carbon, izinto ezintsha zekhabhoni ezisezingeni eliphezulu azihlukaniseki nokusetshenziswa kwezinto ezingavuthiwe, okokusebenza, ubuchwepheshe, ukuphathwa kwezinto ezine zokukhiqiza kanye nokuphathelene nokuphathelene. ubuchwepheshe.
I-Raw materials yizici ezibalulekile ezinquma izici eziyisisekelo zezinto ze-carbon, futhi ukusebenza kwezinto ezingavuthiwe kunquma ukusebenza kwe-carbon material ekhiqizwayo.Ukuze kukhiqizwe ama-electrode e-UHP ne-HP graphite, i-coke yenaliti yekhwalithi ephezulu iyisinqumo sokuqala, kodwa futhi ne-asphalt ye-binder yekhwalithi ephezulu, i-asphalt ye-ejenti ekhulelwe.Kodwa kuphela izinto zokusetshenziswa ezisezingeni eliphakeme, ukuntuleka kwemishini, ubuchwepheshe, izici zokuphatha kanye nobuchwepheshe bobunikazi obuhlobene, futhi ayikwazi ukukhiqiza ikhwalithi ephezulu ye-UHP, i-HP graphite electrode.
Lesi sihloko sigxile ezicini zekhwalithi ephezulu yenaliti ye-coke ukuchaza imibono ethile yomuntu siqu, kubakhiqizi bezinaliti ze-coke, abakhiqizi be-electrode, izikhungo zocwaningo lwesayensi okufanele zixoxwe.
Nakuba ukukhiqizwa kwezimboni ze-needle coke e-China sekwephuzile kunokwamabhizinisi angaphandle, sekuthuthuke ngokushesha eminyakeni yamuva futhi sekuqalile ukumila.Ngokuya ngevolumu ephelele yokukhiqiza, ingahlangabezana ngokuyisisekelo nesidingo se-coke yenaliti ye-UHP kanye ne-HP graphite electrode ekhiqizwa amabhizinisi ekhabhoni asekhaya.Kodwa-ke, kusekhona igebe elithile kukhwalithi yenaliti ye-coke uma kuqhathaniswa namabhizinisi angaphandle.Ukushintshashintsha kokusebenza kweqoqo kuthinta isidingo se-coke yenaliti yekhwalithi ephezulu ekukhiqizeni usayizi omkhulu we-UHP ne-HP graphite electrode, ikakhulukazi ayikho icoke yenaliti ehlanganyelwe yekhwalithi ephezulu engahlangabezana nokukhiqizwa kwejoyinti le-graphite electrode.
Amabhizinisi ekhabhoni angaphandle akhiqiza ukucaciswa okukhulu kwe-UHP, i-HP graphite electrode imvamisa iyinketho yokuqala yekhwalithi ephezulu yenaliti ye-petroleum coke njenge-coke yempahla eluhlaza, amabhizinisi ekhabhoni aseJapan nawo asebenzisa uchungechunge lwamalahle yenaliti ye-coke njengento eluhlaza, kodwa kuphela okulandelayo φ Ukucaciswa kwe-600 mm kokukhiqizwa kwe-graphite electrode.Njengamanje, i-coke yenaliti e-China ikakhulukazi iwuchungechunge lwenaliti yamalahle.Ukukhiqizwa kwekhwalithi ephezulu ye-electrode ye-graphite ye-UHP enkulu ngamabhizinisi ekhabhoni kuvame ukuthembela ochungechungeni lwenaliti ye-petroleum enaliti, ikakhulukazi ukukhiqizwa kwekhwalithi ephezulu ehlangene ne-Japanese Suishima oil series series nele coke ye-British HSP yochungechunge lwenaliti njenge-coke yempahla eluhlaza.
Njengamanje, i-coke yenaliti ekhiqizwa amabhizinisi ahlukahlukene ngokuvamile iqhathaniswa nezinkomba zokusebenza kwezentengiselwano ze-coke yenaliti yangaphandle ngezinkomba zokusebenza ezijwayelekile, njengokuqukethwe komlotha, ukuminyana kwangempela, okuqukethwe kwesibabule, okuqukethwe kwe-nitrogen, ukusatshalaliswa kosayizi wezinhlayiyana, i-coefficient yokwandisa ukushisa nokunye. ku.Kodwa-ke, kusenokuntuleka kwamabanga ahlukene okuhlukaniswa kwenaliti ye-coke uma kuqhathaniswa namazwe angaphandle.Ngakho-ke, ukukhiqizwa kwenaliti ye-coke colloquially futhi "yezimpahla ezihlanganisiwe", akukwazi ukukhombisa izinga eliphezulu lekhwalithi yenaliti ye-premium coke.
Ngokungeziwe ekuqhathaniseni okujwayelekile kokusebenza, amabhizinisi ekhabhoni kufanele futhi anake ukucaciswa kwe-coke yenaliti, njengokuhlukaniswa kwe-thermal expansion coefficient (CTE), amandla ezinhlayiyana, i-anisotropy degree, idatha yokunwetshwa esimweni esingavinjelwe kanye nesimo esivinjelwe, kanye izinga lokushisa phakathi kokunwetshwa nokufinyela.Ngenxa yokuthi lezi zakhiwo ezishisayo ze-needle coke zibaluleke kakhulu ekulawuleni inqubo ye-graphitization ekukhiqizeni i-graphite electrode, yiqiniso, ithonya lezakhiwo ezishisayo ze-asphalt coke ezakhiwe ngemva kokuwoswa kwe-binder kanye ne-asphalt ye-agent impregnating ayifakiwe.
1. Ukuqhathaniswa kwe-anisotropy yenaliti coke
I-Ultra high power graphite electrode production anisotropic degree performance analysis ukulinganisa kwekhwalithi yenalithi ye-coke eluhlaza noma hhayi indlela yokuhlaziya ebalulekile, ubukhulu bezinga le-anisotropy, yiqiniso, futhi libe nomthelela othile ekukhiqizeni i-electrode, izinga i-anisotropy kagesi ukusebenza kokushaqeka okushisayo okwedlulele kunedigri ye-anisotropy yamandla amaphakathi we-electrode encane kuhle.
Njengamanje, ukukhiqizwa kwe-coke yenaliti yamalahle kukhulu kakhulu kune-petroleum needle coke.Ngenxa yezindleko zempahla eluhlaza kanye nentengo yamabhizinisi ekhabhoni, kunzima ukusebenzisa i-coke yenaliti yasekhaya engu-100% ekukhiqizeni i-electrode ye-UHP, kuyilapho wengeza ingxenye ethile ye-coke ye-petroleum ehlanganisiwe ne-graphite powder ukukhiqiza i-electrode.Ngakho-ke, kunzima ukuhlola i-anisotropy ye-coke yenaliti yasekhaya.
2. Izici zomugqa kanye nevolumu ye-coke yenaliti
Ukusebenza kokuguqulwa kwe-linear kanye ne-volumetric ye-needle coke kubonakala ikakhulukazi kwinqubo ye-graphite ekhiqizwa yi-electrode.Ngokushintsha kwezinga lokushisa, i-coke yenaliti izobhekana nokunwetshwa okuqondile kanye ne-volumetric ngesikhathi senqubo yenqubo ye-graphite yokushisa, okuthinta ngokuqondile ukuguqulwa komugqa kanye ne-volumetric ye-billet ethosiwe ye-electrode enqubweni ye-graphite.Lokhu akufani nokusetshenziswa kwezakhiwo ezahlukene ze-coke eluhlaza, amamaki ahlukene wezinguquko zenaliti ye-coke.Ngaphezu kwalokho, izinga lokushisa lokushintsha kwemigqa kanye nevolumu yamabanga ahlukene enaliti coke kanye ne-calcined petroleum coke nalo lihlukile.Kuphela ngokukwazi kahle lesi sici se-coke eluhlaza singakwazi ukulawula kangcono futhi nokwandisa ukukhiqizwa kokulandelana kwamakhemikhali e-graphite.Lokhu kubonakala ikakhulukazi ohlelweni lwe-graphitization yochungechunge.
Ukunwetshwa komugqa kwenzeka kuqala lapho inaliti ye-coke kawoyela iqala ukushisa, kodwa izinga lokushisa ekuqaleni kokufinyela komugqa ngokuvamile lisilela ngemuva kwezinga lokushisa eliphezulu lokubala.Ukusuka ku-1525 ℃ kuya ku-1725 ℃, ukunwetshwa komugqa kuyaqala, futhi izinga lokushisa lokufinyela kwawo wonke umugqa lincane, lingu-200℃ kuphela.Izinga lokushisa lokufinyela kwawo wonke umugqa we-petroleum coke evamile elibaziseke likhulu kakhulu kunalelo le-coke yenaliti, futhi i-coke yenaliti yamalahle iphakathi kokubili, inkulu kancane kune-coke yenaliti yenaliti.Imiphumela yokuhlolwa ye-Osaka Industrial Technology Test Institute eJapane ibonisa ukuthi ukusebenza okushisayo kwe-coke kubi kakhulu, izinga lokushisa lomugqa liyancipha, lifike ku-500 ~ 600℃ izinga lokushisa lomugqa wokuncipha, futhi ukuqala komugqa wokuncipha kwezinga lokushisa liphansi. , ngo-1150 ~ 1200℃ kwaqala ukwenzeka ukuncipha komugqa, okubuye kube izici ze-coke ye-petroleum ebambezelekile evamile.
Ukuba ngcono kwezindawo ezishisayo kanye nokukhula kwe-anisotropy yenaliti ye-coke, kuyancipha izinga lokushisa lokufinyela komugqa.I-coke enaliti kawoyela yekhwalithi ephezulu ingu-100 ~ 150℃ kuphela umugqa wokushisa wokufinyela womugqa.Kuzuzisa kakhulu ukuthi amabhizinisi ekhabhoni aqondise ukukhiqizwa kwenqubo ye-graphitization ngemva kokuqonda izici zokunwetshwa komugqa, ukufinyezwa kanye nokwandiswa kabusha kwe-coke yezinto ezingavuthiwe ezihlukahlukene, okungagwema eminye imikhiqizo engadingekile yemfucuza engadingekile ebangelwa ukusebenzisa imodi yendabuko yokuhlangenwe nakho.
Isikhathi sokuthumela: Oct-08-2021