Kaolin, calcined kaolin, kaolin wosambitsidwa, metakaolin.

Ntchito za kaolin zikuphatikizapo:
Monga zofunikira zamchere zopangira mafakitale ambiri, monga kupanga mapepala, zoumba, mphira, makampani opanga mankhwala, zokutira, mankhwala ndi chitetezo cha dziko, kaolin ali ndi pulasitiki inayake, yomwe imapangitsa kuti thupi lamatope la ceramic likhale lothandizira kutembenuka, kupukuta ndi kupanga.

Udindo wa kaolin muzoumba ndikuyambitsa Al2O3, yomwe imathandizira kupanga mullite ndikuwongolera kukhazikika kwake kwamankhwala ndi mphamvu ya sintering.

Pa sintering, kaolin decomposes mu mullite, kupanga chimango chachikulu cha mphamvu wobiriwira thupi, amene angalepheretse mapindikidwe mankhwala, kukulitsa kutentha kuwombera, ndi kupanga thupi wobiriwira kukhala woyera.

Metakaolin (MK mwachidule) ndi anhydrous aluminium silicate (Al2O3 · 2SiO2, AS2 mwachidule) yopangidwa ndi kutaya madzi kwa kaolin (Al2O3 · 2SiO2 · 2H2O, AS2H2 mwachidule) pa kutentha koyenera (600 ~ 900 ℃).Kaolin ndi wa layered silicate dongosolo, ndipo zigawo amamangidwa ndi van der Waals chomangira, mmene OH ayoni amamangidwa mwamphamvu.Kaolin ikatenthedwa mumlengalenga, kapangidwe kake kamasintha kangapo.Ikatenthedwa mpaka pafupifupi 600 ℃, mawonekedwe osanjika a kaolin adzawonongedwa chifukwa cha kuchepa kwa madzi m'thupi, ndikupanga metakaolin yosinthika yokhala ndi kristalo wosauka.Chifukwa makonzedwe a mamolekyu a metakaolini ndi osakhazikika, amapangitsa kuti metastable ndi thermodynamic athermodynamic athermodynamic metastable state ndi gellability pansi pa chisangalalo choyenera.

Metakaolin ndi mtundu wa mchere womwe umagwira ntchito kwambiri.Ndi amorphous aluminiyamu silicate wopangidwa ndi kopitilira muyeso-bwino kaolin calcined pa kutentha otsika.Imakhala ndi zochitika zambiri za pozzolanic, zomwe zimagwiritsidwa ntchito ngati konkriti, ndipo zimatha kugwiritsidwanso ntchito kupanga ma polima apamwamba kwambiri a geological.