Kaolin, kaolin yokhala ndi calcium, kaolin yotsukidwa, metakaolin.

Ntchito za kaolin zikuphatikizapo:
Monga mchere wofunikira m'mafakitale ambiri, monga kupanga mapepala, zoumba, rabala, makampani opanga mankhwala, zokutira, mankhwala ndi chitetezo cha dziko, kaolin ili ndi pulasitiki inayake, yomwe imapangitsa kuti matope a ceramic akhale oyenera kutembenuza, kupukuta ndi kupanga.

Ntchito ya kaolin mu zoumbaumba ndi kuyambitsa Al2O3, yomwe imathandiza kupanga mullite ndikuwonjezera kukhazikika kwa mankhwala ake komanso mphamvu yake yowononga.

Pa nthawi yowuma, kaolin imawola kukhala mullite, ndikupanga chimango chachikulu cha mphamvu yobiriwira ya thupi, chomwe chingalepheretse kusintha kwa zinthu, kukulitsa kutentha kwa moto, ndikupangitsa thupi lobiriwira kukhala loyera.

Metakaolin (MK mwachidule) ndi silicate ya aluminiyamu yosaphwanyika (Al2O3 · 2SiO2, AS2 mwachidule) yopangidwa ndi kutaya madzi kwa kaolin (Al2O3 · 2SiO2 · 2H2O, AS2H2 mwachidule) pa kutentha koyenera (600~900 ℃). Kaolin ndi ya kapangidwe ka silicate kokhala ndi zigawo, ndipo zigawozo zimamangidwa ndi van der Waals bond, momwe ma OH ions amamangiriridwa mwamphamvu. Kaolin ikatenthedwa mumlengalenga, kapangidwe kake kamasintha kangapo. Ikatenthedwa kufika pafupifupi 600 ℃, kapangidwe ka kaolin kokhala ndi zigawozo kadzawonongeka chifukwa cha kutaya madzi, ndikupanga transition phase metakaolin yokhala ndi crystallinity yoipa. Chifukwa chakuti ma molecular structure a metakaolin ndi osakhazikika, amapereka thermodynamic metastable state ndipo imakhala ndi gellability pansi pa kusonkhezera koyenera.

Metakaolin ndi mtundu wa mchere wosakaniza kwambiri. Ndi aluminiyamu wosapanga mawonekedwe opangidwa ndi kaolin wopyapyala kwambiri womwe umasungunuka kutentha kochepa. Uli ndi mphamvu zambiri za pozzolanic, makamaka womwe umagwiritsidwa ntchito ngati konkriti, ndipo ungagwiritsidwenso ntchito kupanga ma polima apamwamba a geological.