Cov khoom kub kub siv nyob rau hauv cov txheej txheem ntawm cov hlau txhuas muaj xws li (rotary kiln), (fluidized flash roasting furnace), (cig fluidized txaj roasting rauv), (sspended roasting furnace), (tank calcining furnace), (Carbon roasting furnace). ), (molten ntsev electrolytic cell, (aluminium melting rauv), thiab lwm yam.
Cov txheej txheem alumina roasting yog ua tiav nyob rau hauv qhov kub thiab txias thiab ceev ceev. Nyob rau tib lub sij hawm, vim lub siab hardness thiab zoo fluidity ntawm cov ntaub ntawv alumina ua tiav, muaj cov kev cai nruj heev rau cov khoom zoo ntawm alumina. Txhua yam impurities hauv cov ntaub ntawv hauv ob sab phlu yuav tsis sib xyaw. Kev cuam tshuam ncaj qha rau kev ua haujlwm ntawm cov khoom, yog li cov ntaub ntawv refractory yuav tsum tau ua kom tau raws li cov kev mob hauv qab no (siab kub tsis kam), (hnav tsis kam), (siab zog), (zoo thermal stability), (zoo kev ntseeg siab), (muaj zog sealing).
