Metsoako ea litene tse ngata?

Lisebelisoa li ka khethoa ho latela litaba tsa Al2O3 tse khethiloeng ke maemo a ts’ebeliso. Hona joale, mekhoa e tloaelehileng ea motsoako ke:

①Synthetic mullite (sintered kapa fused) ke aggregate + synthetic mullite phofo e ntle;

②Synthetic mullite (sintered kapa fused) ke aggregate + synthetic mullite phofo e ntle + Al2O3 phofo e ntle + phofo ea letsopa e hloekileng;

③Synthetic mullite (sintered kapa fused) le fused white corundum ke aggregate + synthetic mullite phofo e ntle + Al2O3 phofo e ntle + phofo ea letsopa e hloekileng. Karo-karolelano ea boholo ba likaroloana e lokela ho lokisoa ho ea ka molao-motheo oa “tse kholo lipheletsong tse peli le tse nyenyane bohareng”. Sebelisa metsi a litšila a sulfite pulp kapa polyaluminium chloride kapa polyphosphate e le ntho e tlamang. Ka mor’a hore e kopane ka mokhoa o ts’oanang, e thehoa tlas’a khatello e phahameng ‘me e chesoa ka sebōping sa mocheso o phahameng. Mocheso oa ho chesa o khethoa ke litaba tsa Al2O3 ka setene sa refractory. Pakeng tsa 1600 ~ 1700 ℃.

Litene tsa Zirconium mullite li entsoe ka lihlahisoa tse entsoeng ka mullite le zirconia. Zirconium mullite e kopantsoeng ka setene se entsoeng ka kristale e teteaneng, mocheso o phahameng o nolofatsang tlas’a mojaro, botsitso bo botle ba mocheso, matla a phahameng a mochine mocheso oa kamore le mocheso o phahameng, ho hanyetsa ho apara hantle, mocheso o motle oa mocheso, le ho hanyetsa khoholeho e ntle.

Fe2O3 e na le ho qhibiliha ho itseng ho tiileng ho mullite le corundum ka mocheso o phahameng, ho etsa tharollo e tiileng. Sollubility ea eona e tiileng ho corundum e phahame ho feta ea mullite, ‘me lesela la kristale la mullite le corundum le ntse le hōla ka lebaka la ho thehoa ha tharollo e tiileng. Mocheso oa pele oa ho qhibiliha oa Fe2O3 bakeng sa lisebelisoa tsa Al2O3-SiO2 o amana le litaba tsa Al2O3 tsamaisong kapa karo-karolelano ea Al2O3 / SiO2. Ha Al2O3/SiO2<2.55, mocheso oa pele o qhibilihang ke 1380℃. Haeba Al2O3/SiO2>2.55, mocheso oa pele o qhibilihang ke 1380℃. Thempereichara e qhibilihang e eketsehile ho 1460 ℃, ‘me butle-butle e eketseha ka keketseho ea litaba tsa eona tsa Al2O3. Sebakeng se fokotsang sepakapaka, Fe2O3 e fokotsehile ho FeO mme e qhibiliha ka har’a karolo ea khalase, ‘me mocheso oa ho qhibiliha oa incipient oa tsamaiso o theohela ho 1240 ° C le 1380 ° C, ka ho latellana.

Ka keketseho ea litaba tsa Al2O3 ka litene tsa mullite, ts’ebetso ea eona e phahameng ea mocheso e ntlafala; ha palo ea solvent e ntse e eketseha, ts’ebetso e phahameng ea mocheso e fokotseha. Ka hona, ho laola ka thata litaba tsa li-oxide tsa litšila, haholo-holo litaba tsa K2O, Na2O le Fe2O3, ke mohato oa bohlokoa oa ho fumana litene tsa mullite tse sebetsang hantle le tse hloekileng. E sebelisoa sebakeng sa slag kapa sa khase e nang le likaroloana tsa alkali, e na le phello e mpe e senyang litene tsa mullite refractory.