Kaolin yog cov ntxhia uas tsis yog xim hlau, uas yog ib hom av nplaum thiab av nplaum pob zeb feem ntau tsim los ntawm Kaolinite pab pawg av nplaum.Vim nws cov tsos dawb thiab muag heev, nws tseem hu ua Baiyun av.Nws yog lub npe hu ua Gaoling Village hauv Jingdezhen, Jiangxi Province.

Nws cov kaolin ntshiab yog dawb, muag heev thiab Mollisol zoo li, nrog cov yas zoo, hluav taws kub thiab lwm yam khoom siv lub cev thiab tshuaj.Nws cov ntxhia muaj pes tsawg leeg yog tsim los ntawm Kaolinite, halloysite, hydromica, Illite, Montmorillonite, quartz, feldspar thiab lwm yam minerals.Kaolin yog dav siv nyob rau hauv papermaking, ceramics, thiab refractory cov ntaub ntawv, ua raws li los ntawm coatings, roj hmab fillers, enamel glazes, thiab dawb cement raw cov ntaub ntawv.Ib qho me me yog siv rau hauv cov yas, xim, xim, sib tsoo log, xaum, tshuaj pleev ib ce txhua hnub, xab npum, tshuaj tua kab, tshuaj, textiles, roj av, tshuaj, khoom siv hauv tsev, kev tiv thaiv hauv tebchaws, thiab lwm yam kev lag luam.

Kaolin minerals yog tsim los ntawm Kaolinite, dickite, pearl pob zeb, halloysite thiab lwm yam Kaolinite pawg minerals, thiab lub ntsiab mineral tivthaiv yog Kaolinite.

Cov mis mos Crystal chemistry ntawm Kaolinite yog 2SiO2 ● Al2O3 ● 2H2O, thiab nws cov theoretical chemistry muaj pes tsawg leeg yog 46.54% SiO2, 39.5% Al2O3, 13.96% H2O.Kaolin cov zaub mov muaj nyob rau hauv 1: 1 hom txheej silicate, thiab cov siv lead ua feem ntau yog tsim los ntawm silica tetrahedron thiab alumina Octahedron.Lub silica tetrahedron yog txuas nrog rau ob sab kev coj los ntawm kev sib koom lub vertex lub kaum sab xis los tsim ib hexagonal grid txheej, thiab lub ncov oxygen tsis sib koom los ntawm txhua silica tetrahedron ntsib ib sab;Lub 1: 1 hom chav tsev txheej yog tsim los ntawm silicon oxide tetrahedron txheej thiab txhuas oxide Octahedron txheej, uas muab cov lus qhia oxygen ntawm silicon oxide tetrahedron txheej.