Kapangidwe ka tinthu tating'onoting'ono kakakhala kakang'ono, kuyera kwake kumakhala kwakukulu. Kapangidwe ka tinthu tating'onoting'ono kakakhala kolimba, kumakhala kovuta kuchotsa kaboni, makamaka kaboni mkati mwa tinthu tating'onoting'ono sikuvuta kusinthasintha, zomwe zimakhudza kuyera kwa chinthu chopangidwa ndi calcium. Zinthu zopangira ndi zabwino, malo ake ndi akulu, kaboni ndi wosavuta kuchotsa, kaboni ndi wosavuta kusinthasintha, ndipo kuyera kwa chinthu chopangidwa ndi calcium ndi kwakukulu.

Poyerekeza ndi 900 ℃, 850 ℃ kaolin calcination, zinthu za kaolin sizimangochotsa madzi a kristalo, zimawonjezera kukula kwa ma pore, komanso zimasunga zoyera, zoyera kwambiri, zomwe zimagwirizana ndi kutentha kwa calcination, zimachepetsa ndalama zogulira komanso kuipitsa chilengedwe, kotero 850 ℃ ndiye kutentha kwabwino kwambiri kwa calcination.

Kuyera kwa chinthucho kumawonjezeka ndi nthawi yokhazikika ya kutentha, koma chizolowezicho chimakhala chochedwa. Kutentha kukakhala kochepa kwambiri, mpweya wa kaolin sungathe kuchotsedwa mosavuta. Pambuyo pa maola opitilira 4 a kutentha kosasinthasintha, kuchuluka kwa decarburization ndi kusowa madzi m'thupi kwa chinthucho kumakhala kochepa, kotero kuyera kwa chinthucho kumawonjezeka, koma kusinthako kumakhala kochepa kwambiri. Pofuna kupititsa patsogolo kutentha, kuwongolera kutentha kosasinthasintha kwa chinthu chosungunuka kumakhala koyenera kwa maola 4.

Pogwiritsa ntchito zowonjezera zosiyanasiyana za calcium, njira yopangira zinthu imakhala yosavuta, mtengo wake umachepa, ndipo kuyera kwa zinthu zopangidwa ndi calcium kumawonjezeka kwambiri. Pakati pa izi, sodium chloride ndiye chowonjezera chogwira ntchito kwambiri. Kuyika urea ngati chothandizira cholumikizira kumawonjezeranso kuyera kwa kaolin yokhala ndi calcium.

Kulamulira mlengalenga wa calcination kumakhudza kwambiri kuyera ndi chikasu cha zinthu zopangidwa ndi calcium. Pofuna kukwaniritsa zosowa za kuchotsa kaboni wa kaolin, calcination mumlengalenga wothira okosijeni imapangitsa kuti chitsulo chosungunuka chikhale chochepa komanso mtengo wake ukhale wokwera, zomwe zimapangitsa kuti kaboni ichotsedwe komanso chikasu cha zinthu zopangidwa ndi kaolin. Chifukwa chake, calcination pa 850 ℃ kutentha kwambiri komanso mlengalenga wocheperako imatha kuchepetsa chitsulo chocheperako komanso chitsulo chochuluka, kuwongolera mlengalenga wa calcination, kuchepetsa kuyera ndikuwonjezera chikasu cha zinthu.