Kaolin, kaolin calcined, kaolin sachara, metakaolin.

Ihe eji eme kaolin gụnyere:
Dị ka ihe dị mkpa ịnweta akụrụngwa maka ọtụtụ ụlọ ọrụ, dị ka ịme akwụkwọ, ceramics, roba, ụlọ ọrụ kemịkalụ, mkpuchi, ọgwụ na nchekwa mba, kaolin nwere ụfọdụ plasticity, nke na-eme ka apịtị seramiiki na-enyere aka ịtụgharị, na-atụgharị na ịmepụta.

Ọrụ kaolin na ceramics bụ iwebata Al2O3, nke na-eme ka e guzobe mullite ma na-eme ka nkwụsi ike kemịkal ya na ike na-eme ka ọ dịkwuo mma.

N'oge sintering, kaolin decomposes n'ime mullite, na-akpụ isi framework nke akwụkwọ ndụ akwụkwọ ndụ ahụ ike, nke nwere ike igbochi deformation nke ngwaahịa, na-amụbawanye ọkụ ọkụ, na-eme ka akwụkwọ ndụ akwụkwọ ndụ ahụ nwere ụfọdụ ọcha.

Metakaolin (MK maka mkpụmkpụ) bụ anhydrous aluminum silicate (Al2O3 · 2SiO2, AS2 maka mkpụmkpụ) kpụrụ site akpịrị ịkpọ nkụ nke kaolin (Al2O3 · 2SiO2 · 2H2O, AS2H2 maka mkpụmkpụ) na kwesịrị ekwesị okpomọkụ (600 ~ 900 ℃).Kaolin bụ nke ihe owuwu silicate nwere akwa, yana van der Waals bond jikọtara ya, bụ nke ion OH siri ike.Mgbe kaolin na-ekpo ọkụ na ikuku, usoro ya ga-agbanwe ọtụtụ ugboro.Mgbe ọ na-ekpo ọkụ ruo ihe dị ka 600 ℃, a ga-ebibi ihe owuwu nke kaolin n'ihi akpịrị ịkpọ nkụ, na-eme usoro mgbanwe metakaolin na-enweghị kristal na-adịghị mma.N'ihi na nhazi molekụla nke metakaolin anaghị adịkarị, ọ na-enye ọnọdụ metastable thermodynamic ma nwee ike dị n'okpuru mkpali kwesịrị ekwesị.

Metakaolin bụ ụdị ihe mgbakwunye ịnweta ịnweta na-arụsi ọrụ ike.Ọ bụ silicate aluminom amorphous mebere site na kaolin ultra-fine calcined na obere okpomọkụ.Ọ nwere ọrụ pozzolanic dị elu, nke a na-ejikarị dị ka ihe mgbakwunye ihe, a pụkwara iji mee polymers geological dị elu.