I-tabular corundum, obeye aziwe njengoi-alumina ye-tabular ehlanganisiwe, iwuhlobo lokuhlanzeka okuphezulu kwe-alumina (Al2O3) ecutshungulwa ngokuqondile ukuze ibe nei-tabular ehlukile, noma umumo oyisicaba. Ikhiqizwa nge-sintering (ukushisa ngaphandle kokuncibilika) i-alumina powder yezinga eliphezulu emazingeni okushisa angaphezu kuka-1900 ° C, okwenza izinhlayiya ze-alumina zikhule futhi zenze amakristalu amakhulu, ayisicaba, afana nepuleti.
Ukucaciswa kwe-tabular corundum | ||
Into | Okujwayelekile | Hlola |
Amandla Adonsela phansi Abonakalayo | 3.5g/cm3 iminithi | 3.56g/cm3 |
I-Porosity ebonakalayo | 5.0% ubuningi | 3.5% |
Ukumuncwa Amanzi | 1.5% ubuningi | 1.1% |
Ukwakheka Kwamakhemikhali | ||
Into | Okujwayelekile % | Isivivinyo % |
I-Al2O3 | 99.2 imiz | 99.4% |
Na2O | 0.40 ubuningi | 0.29% |
Fe2O3 | 0.10 ubuningi | 0.02% |
I-CaO | 0.10 ubuningi | 0.02% |
SiO2 | 0.15 ubuningi | 0.03% |
Ukusetshenziswa: I-tabular corundum isetshenziswa kabanzi ezintweni eziphikisayo ezisebenza kahle emikhakheni yeinsimbi, ukubunjwa, amakhemikhali ephethiloli, izitini eziphefumulayo, amalayili e-ladle, izinto ezisansimbi, izingxenye ezakhiwe ngaphambili, izitsha zobumba nezinye izinkambu. Kuyinto enhle kakhulu yokwenziwa refractory impahla eluhlaza. I-tabular corundum isetshenziswa njengeI-refractory aggregateingasetshenziswa ngokuhambisana ne-spinel, i-alumina evuliwe e-calcined kanye nama-agent abophayo afana nosimende, ubumba noma i-resin. Izitini ezilungisiwe ezihlanzekile ze-corundum zinokuqukethwe kokungcola okuphansi (okufana ne-SiO2), ukuminyana okuphezulu kwenqwaba kanye nezakhiwo ezinhle ze-thermodynamic, okwenza izitini ze-corundum Izitini zimelana nomonakalo oshisayo, wamakhemikhali kanye nesakhiwo obangelwa ukusebenza kwama-gasifiers nezinye izithando zezimboni. | ||
Izinzuzo:high refractoriness; ukumelana nokugqwala okuphezulu; ukumelana nokuguguleka okuphezulu; ukumelana nokushaqeka okuphezulu kokushisa; amandla aphezulu, ukuqina okuhle; ezinzile izakhiwo zamakhemikhali; ukumelana nokuguguleka kwe-alkaline slag, ukumelana kahle nokuguguleka kwe-slag, nokumelana kahle nokuguguleka kwensimbi encibilikisiwe; Imelana nokuguguleka kwensimbi encibilikisiwe kanye nokungena komoya okuhle. |
Izicelo ze-tabular corundum
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