U ka khetha li-castable tse sa keneleng liaparo bakeng sa likarolo tse tlokotsing joalo ka likhama tsa ente ea mashala molomong oa lillo tsa samente?

Ka sebeng se secha sa samente se ommeng, molomo oa sebōpi, nozzle ea ente ea mashala le maemo a mang a na le litlamorao tse hlakileng tsa mocheso o phahameng, ts’oaetso ea mafura, ts’enyeho le tšenyo, mme lisebelisoa tsa boleng bo holimo tse sa bopehang tse sa sebetsoang li lokela ho sebelisoa. Tlas’a maemo a tloaelehileng, li-castable tse sa keneleng mocheso le tse sa sebetseng tsa li-kilns tsa samente li na le liminerale tse kang refractory, mullite, andalusite, le silicon carbide.

CharacteristicsRaw litšobotsi tse bonahalang. Refractory e arotsoe ka lipeipi tse kopantsoeng tsa calcined le tsa motlakase. Har’a tsona, ho qhibilihisoa ha lisebelisoa tsa phala ea motlakase ho fumanoa ka ho qhibilihisa oxide ea tšepe kapa bauxite seboping se futhumatsang ebe metsi a pholisa. Lisebelisoa tsa phala tse fusitsoeng li na le likristale tse kholo tse hanyetsang, letsoalo le phahameng, likoti tse fokolang tsa moea le matla a phahameng. Calcined Refractory e na le likristale tse nyane, masoba a mangata a moea le matla a tlase, empa e na le ts’ireletso e ntle ea mocheso. Ka kakaretso, ho hanyetsa mollo le ho hanyetsa abrasion ho lokile haholo, empa mocheso oa ts’ireletso ea mocheso o futsanehile, phetisetso ea mocheso e ntle haholo, ‘me khokahano ea semmuso e sa keneleng alkali e mpe haholo.

Mullite e boetse e arotsoe ka mefuta e ‘meli: lipeipi tsa calcined le fused. Har’a bona, litšobotsi tsa fused mullite fittings li matlafetse. Ka kakaretso, mullite e na le litšobotsi tsa ts’epahalo e ntle ea mocheso o phahameng oa mocheso, matla a phahameng a mocheso o matla, khatello e matla ea ho phomola khatello ea maikutlo, ho hanyetsa mocheso o phahameng le mocheso o tlase.

Andalusite ke e ‘ngoe ea liminerale sehlopheng sa kyanite. Liminerale tsa Kyanite li bua ka liminerale tse ‘maloa tse tšoanang le motsoako oa lik’hemik’hale Al2O3-SiO2: kyanite, andalusite le sillimanite. Bohlokoa ba mefuta ena ea likristale ke bohloeki bo phahameng, ‘mala o hloekileng le khanyetso e ntle ea ho khomarela. Nakong ea ts’ebetso eohle ea ho bala, li fetoha mullite le lik’hemik’hale tse nang le metsi a mangata a sio2, ‘me li tsamaea le katoloso ea molumo (Kyanite ke 16% ~ 18%, andalusite ke 3% ~ 5%, sillimanite ke 7% ~ 8% ).

Ha 1300 ~ 1350 ℃, kyanite e fetoha mullite le calcite, mme e fetoha ka bophahamo ba + 18%. Ts’ebeliso ea kyanite e thibetsoe ka lebaka la keketseho e fetelletseng. Ho ruruha ho bakoang ke phetoho ea kyanite ho ka sebelisoa ho fokotsa ho fokotseha ha lisebelisoa tse sa feleng tsa ho koala, ‘me mullite e hlahisoang e ka sebelisoa ho ntlafatsa khanyetso ea mocheso oa li-castle tse haelloang. Leha ho le joalo, calcite e bakoang ke phetoho ea kyanite ha e ntle bakeng sa ho hanyetsoa hoa mocheso.

Ka 1400 ° C, andalusite e fetoha mullite le karolo e phahameng ea silicon e khabisitsoeng ka khalase, ‘me e fetoha ka molumo oa + 4%. Hobane ho ruruha ho nyane, ho molemo ho eketsa phepelo ea andalusite. Ho ruruha ho bakoang ke liphetoho tsa andalusite ho ka sebelisoa ho felisa ho fokotseha ha lisebelisoa tse sa feleng tsa ho koala, ‘me mullite e hlahisoang e ka sebelisoa ho ntlafatsa khanyetso ea mocheso oa li-castle tse haelloang. Phapang ke hore karolo ea khalase e nang le lesela le phahameng haholo e bakiloeng ke phetoho ea andalusite e na le coefficient e tlase haholo ea katoloso, e leng molemo haholo ho ntlafatsa khanyetso ea mocheso oa li-castle tse haelloang.

1500 ℃, sillimanite e fetoha mullite; le liphetoho ka molumo oa + 8%. Khopolo-taba, ho ruruha ho bakoang ke phetoho ea sillimanite ho ka sebelisoa ho felisa ho fokotseha ha lisebelisoa tsa ho koala tse sa sebetsoang, ‘me mullite e hlahisoang e boetse e na le molemo ho ntlafatsa khanyetso ea mocheso oa li-castle tse haelloang.

Ka hona, kyanite e sebelisoa hangata e le sebolaya-likokoana-hloko lintlheng tse tlase le tse mahareng tse sa bōptjoang tsa ho kenya lintho kahare; andalusite e sebelisoa hangata e le sebolaya-likokoana-hloko linthong tse mahareng le tse phahameng tse sa bopehang tsa ho kenya lintho kahare; Mocheso oa phetoho oa sillimanite o phahame haholo, mme hangata ha o phutholohe ho sebelisana le ho koala ho sa sebetseng ho sa emeng. Ts’ebeliso ea moemeli oa katoloso ea thepa.