Mefuta ea litene tse phahameng tsa alumina li sebelisoa ka tloaelo liipone tsa indasteri?

Setene se phahameng sa alumina se bolela sehlahisoa se sintiloeng se nang le ho feta 348% Al2O aluminosilicate kapa alumina e hloekileng. Ka kakaretso, litene tse phahameng tsa alumina li na le tlase ho 80% Al2O3, ‘me tse nang le ho feta 80% Al2O3 li bitsoa litene tsa corundum. Ha li bapisoa le litene tsa letsopa, litene tse phahameng tsa alumina li na le melemo e ikhethang ea ho hanyetsa ho phahameng le mocheso o phahameng o nolofatsang tlas’a mojaro. Tšebelisong ea libono tsa indasteri, litene tse tloaelehileng tsa aluminium tse phahameng li oela likarolong tse hlano tse latelang.

(1) Setene se tloaelehileng sa alumina e phahameng

Sebopeho se seholo sa liminerale tsa setene ke mullite, corundum le karolo ea khalase. Ha dikahare tsa Al2O3 sehlahisoa se ntse se eketseha, mullite le corundum le tsona lia eketseha, karolo ea khalase e tla fokotseha ka tsela e nepahetseng, ‘me ts’ebetso ea ho hanyetsa le mocheso o phahameng oa sehlahisoa o tla eketseha ka tsela e nepahetseng. Litene tse tloaelehileng tsa alumina tse phahameng li na le letoto la lisebelisoa tse molemo tsa ho hanyetsa mollo ho feta lihlahisoa tsa letsopa, ‘me ke lisebelisoa tse nang le liphello tse ntle tsa kopo le mefuta e mengata ea tšebeliso. E sebelisoa haholo libakeng tse fapaneng tsa ho futhumatsa mocheso. Ha ho bapisoa le lihlahisoa tsa letsopa, bophelo ba tšebeletso ea sebōpi bo ka ntlafatsoa.

(2) Setene se phahameng sa aluminium se phahameng se bonolo

Ha ho bapisoa le litene tse tloaelehileng tse phahameng tsa aluminium, litene tse phahameng tsa aluminium tse nang le thepa e ngata li fapane le karolo ea matrix le karolo ea binder: karolo ea matrix e eketsoa ka majoe a mararo, ‘me motsoako oa lik’hemik’hale ka mor’a ho thunngoa o haufi le sebopeho sa khopolo-taba. mullite, e hlahisoang ka mokhoa o utloahalang Sebelisa lisebelisoa tse phahameng tsa aluminium, tse kang phofo ea corundum, phofo e phahameng ea aluminium corundum, joalo-joalo; khetha letsopa le chitja la boleng bo holimo joalo ka moemeli oa tlamahano, ‘me u sebelise li-agent tse fapaneng tsa letsopa tse kopantsoeng kapa li-mullite bonding agents ho latela mefuta. Ka mokhoa o ka holimo, mocheso o nolofatsang mojaro oa litene tse phahameng tsa alumina o ka eketsoa ka hoo e ka bang 50 ho isa ho 70°C.

(3) Setene se sengata se phahameng sa aluminium

Ntlafatsa khanyetso ea creep ea litene tse phahameng tsa alumina ka ho amohela seo ho thoeng ke karabelo e sa leka-lekaneng. Ke hore, ho ea ka mocheso oa tšebeliso ea sebōpi, eketsa liminerale tse nang le majoe a mararo, alumina e entsoeng, joalo-joalo ho matrix ho etsa hore sebopeho sa matrix se be haufi le kapa ka ho feletseng mullite, hobane mulliteization ea matrix ka sebele e tla eketsa mullite. dikahare tsa thepa , Fokotsa karolo ea likhalase tsa likhalase, ‘me thepa e babatsehang ea mochine le ea mocheso ea mullite e thusa ho ntlafatsa ts’ebetso e phahameng ea mocheso oa thepa. E le ho etsa hore matrix e be mullite ka ho feletseng, ho laola Al2O3 / SiO2 ke senotlolo. Litene tse tlase tsa aluminium tse tlase li sebelisoa haholo liboping tse chesang tse chesang, libopi tse phatlohang le libopi tse ling tsa mocheso.

(4) Phosphate e tlamahane setene se phahameng sa alumina

Litene tse phahameng tsa aluminium tse entsoeng ka aluminium li entsoe ka compact super-grade kapa ea pele-grade high-alumina bauxite clinker e le thepa e ka sehloohong e tala, tharollo ea phosphate kapa tharollo ea aluminium phosphate e le binder, ka mor’a ho bōptjoa ha mochine o omileng, phekolo ea mocheso ho 400 ~ 600 ℃ Lihlahisoa tsa refractory tse entsoeng ka lik’hemik’hale. Ke setene se sa chesoeng. E le ho qoba ho fokotseha ho hoholo ha sehlahisoa nakong ea tšebeliso, hangata hoa hlokahala ho kenyelletsa lisebelisoa tse tala tse ka atolosoang ke mocheso, tse kang kyanite, silika, joalo-joalo, ka har’a metsoako. Ha ho bapisoa le litene tse phahameng tsa alumina tse entsoeng ka ceramic, ts’ebetso ea eona e thibelang ho hlobola e molemo, empa mocheso oa eona o nolofatsang mojaro o tlase, ‘me ho hanyetsa ha kutu hoa fokola. Ka hona, palo e nyane ea corundum e fused, mullite, joalo-joalo e hloka ho kenyelletsoa ho matlafatsa matrix. Litene tse phahameng tsa aluminium tse nang le phosphate li sebelisoa haholo liitseng tsa rotary tsa samente, marulelong a sebōpi sa motlakase le likarolo tse ling tsa sebōpi.

(5) Micro-expansion high alumina setene

Setene se entsoe haholo-holo ka bauxite e phahameng ea alumina e le thepa e ka sehloohong e tala, e kenyelletsoeng ka majoe a mararo a tsepamisitsoeng, ‘me e entsoe ho latela mokhoa oa tlhahiso ea litene tse phahameng tsa aluminium. E le hore u atolose hantle litene tse phahameng tsa aluminium nakong ea tšebeliso, senotlolo ke ho khetha ho tsepamisa mohopolo oa majoe a mararo le boholo ba eona, le ho laola mocheso oa ho chesa, e le hore karolo ea liminerale tse khethiloeng tse tharo li be mullite le tse ling tsa tse tharo. -majoe a liminerale a sala. Liminerale tse setseng tse nang le majoe a mararo li sebelisoa hape (li-mulliteized tsa mantlha kapa tsa bobeli) nakong ea ts’ebeliso, li tsamaea le katoloso ea molumo. Liminerale tse khethiloeng tsa majoe a mararo ka ho khetheha ke lisebelisoa tse kopantsoeng. Hobane mocheso oa ho bola oa liminerale tse tharo tsa majoe o fapane, katoloso e bakoang ke petrochemical ea mullite e boetse e fapane. Ho sebelisa tšobotsi ena, litene tse phahameng tsa alumina li na le phello e tšoanang ea ho atolosa ka lebaka la mocheso o fapaneng oa ho sebetsa. Ho hatelloa ha litene tsa litene ho ntlafatsa kakaretso ea kakaretso ea ‘mele oa lesela, ka hona ho ntlafatsa ho hanyetsa ha litene ho kenella ka slag.