Ntho e ikhethang ea alumina e phahameng litene refractory

Har’a lisebelisoa tsa refractory tsa aluminosilicate, litene tse phahameng tsa alumina refractory li na le refractoriness e phahameng. Ha litaba tsa Al2O3 sehlahiswa li ntse li eketseha, refractoriness ea eketseha, ka kakaretso ha e tlase ho 1750 ℃ ​​~ 1790 ℃. Ha litaba tsa alumina li le kholo ho feta 95%, refractoriness e ka ba holimo ho 1900 ℃ ~ 2000 ℃.

Ka ho eketsoa ha SiO2 le li-oxide tsa tšepe, mocheso o nolofatsang mojaro oa litene tse phahameng tsa alumina refractory oa fokotseha. Mocheso o nolofatsang mojaro oa litene tse tloaelehileng tse phahameng tsa aluminium ke 1420 ℃～1530 ℃. Mocheso o bonolo oa lihlahisoa tsa corundum tse nang le litaba tsa Al2O3 tse kholo ho feta 95% li ka holimo ho 1600 ℃.

Litene tse phahameng tsa alumina refractory li na le mosebetsi oa ho hanyetsa li-slags tse sa tšoaneng. Ka lebaka la litaba tse phahameng tsa Al2O3 sehlahisoa le ho se jele paate ha eona, e na le khanyetso e matla ea kutu ho acid le alkali slag.

Litene tse phahameng tsa alumina refractory li na le ho hanyetsa mocheso oa mocheso. Corundum le likristale tsa mullite li lula hammoho, ‘me coefficient ea katoloso ea mela ea corundum e kholo ho feta ea mullite. Ka hona, ha mocheso o phahama, phapang ea ho atolosa sehlahisoa e tla baka khatello ea maikutlo. Ka hona, ho hanyetsa mocheso oa mocheso oa litene tse phahameng tsa alumina ha ho molemo, ‘me palo ea metsi a pholileng ke makhetlo a 3 ho isa ho a 5 feela.