Kaolin, kaolin calcined, kaolin wanke, metakaolin.

Abubuwan amfani da kaolin sun haɗa da:
A matsayin ma'adinai da ake buƙata don masana'antu da yawa, irin su yin takarda, yumbu, roba, masana'antar sinadarai, sutura, magani da tsaron ƙasa, kaolin yana da wasu nau'ikan filastik, wanda ke sa jikin yumbu mai yumbu ya dace da juyawa, grouting da kafawa.

Matsayin kaolin a cikin yumbu shine gabatar da Al2O3, wanda ke da tasiri ga samuwar mullite kuma yana inganta kwanciyar hankali na sinadarai da ƙarfin sintering.

A lokacin sintering, kaolin ya bazu zuwa mullite, yana samar da babban tsarin ƙarfin jikin kore, wanda zai iya hana nakasar samfuran, faɗaɗa zafin harbi, kuma ya sa jikin kore ya sami wani fari.

Metakaolin (MK a takaice) silicate na aluminum ne mai anhydrous (Al2O3 · 2SiO2, AS2 a takaice) wanda aka kafa ta hanyar bushewar kaolin (Al2O3 · 2SiO2 · 2H2O, AS2H2 a takaice) a zazzabi mai dacewa (600 ~ 900 ℃).Kaolin na cikin tsarin silicate mai laƙabi ne, kuma yaduddukan suna ɗaure ta hanyar van der Waals bond, wanda OH ions ke daure da ƙarfi.Lokacin da kaolin ya yi zafi a cikin iska, tsarinsa zai canza sau da yawa.Lokacin da aka yi zafi zuwa kusan 600 ℃, tsarin kaolin da aka yi da shi zai lalace saboda rashin ruwa, yana samar da lokaci na tsaka-tsakin metakaolin tare da ƙarancin crystallinity.Saboda tsarin kwayoyin halitta na metakaolin ba bisa ka'ida ba ne, yana ba da yanayin yanayin zafi mai zafi kuma yana da gellability a ƙarƙashin haɓaka mai kyau.

Metakaolin wani nau'i ne na haɓakar ma'adinai mai aiki sosai.Silicate ne na amorphous aluminum wanda aka kafa ta ultra-lafiya kaolin calcined a ƙananan zafin jiki.Yana da babban aikin pozzolanic, galibi ana amfani da shi azaman ƙarami, kuma ana iya amfani da shi don yin polymers na ƙasa mai girma.