Kaolin yog ib hom av nplaum thiab pob zeb av nplaum uas feem ntau yog ua los ntawm cov av nplaum Kaolinite. Vim nws dawb thiab zoo li mos, nws kuj hu ua av Baiyun. Nws tau muab lub npe rau lub zos Gaoling hauv Jingdezhen, Jiangxi xeev.

Nws cov kaolin dawb huv yog dawb, mos thiab zoo li Mollisol, nrog rau kev ua kom zoo, tiv taus hluav taws thiab lwm yam khoom siv lub cev thiab tshuaj lom neeg. Nws cov khoom siv hauv av feem ntau yog Kaolinite, halloysite, hydromica, Illite, Montmorillonite, quartz, feldspar thiab lwm yam minerals. Kaolin siv dav hauv kev ua ntawv, ceramics, thiab cov ntaub ntawv refractory, ua raws li cov txheej txheem, roj hmab fillers, enamel glazes, thiab cov ntaub ntawv raw cement dawb. Me ntsis yog siv rau hauv yas, xim, pigments, sib tsoo log, cwj mem qhuav, tshuaj pleev ib ce txhua hnub, xab npum, tshuaj tua kab, tshuaj, textiles, roj av, tshuaj lom neeg, cov ntaub ntawv tsim kho, kev tiv thaiv lub teb chaws, thiab lwm yam kev lag luam.
Kaolin tau dhau los ua cov khoom siv tseem ceeb rau ntau lub lag luam xws li kev ua ntawv, ceramics, roj hmab, kev tsim tshuaj lom neeg, kev pleev xim, tshuaj, thiab kev tiv thaiv lub tebchaws.

Kev lag luam ceramic yog qhov kev lag luam thaum ub thiab siv dav tshaj plaws rau kev siv kaolin. Feem ntau cov tshuaj yog 20% ​​txog 30% ntawm cov mis. Lub luag haujlwm ntawm kaolin hauv ceramics yog los qhia Al2O3, uas muaj txiaj ntsig zoo rau kev tsim mullite, txhim kho nws cov tshuaj ruaj khov thiab lub zog sintering. Thaum lub sijhawm sintering, kaolin decomposes los ua mullite, tsim lub hauv paus tseem ceeb rau lub zog ntawm lub cev. Qhov no tuaj yeem tiv thaiv kev hloov pauv ntawm cov khoom, nthuav qhov kub ntawm kev tua hluav taws, thiab tseem muab qee qib ntawm kev dawb rau lub cev. Tib lub sijhawm, kaolin muaj qee yam plasticity, cohesiveness, suspension thiab bonding muaj peev xwm, uas muab cov av nplaum porcelain thiab porcelain glaze nrog cov qauv zoo, ua rau lub cev av nplaum porcelain yooj yim rau kev tig, grouting thiab tsim. Yog tias siv rau hauv cov xov hlau, nws tuaj yeem ua rau rwb thaiv tsev thiab txo qhov poob dielectric.

Cov khoom siv ua los ntawm av nplaum tsis yog tsuas yog muaj cov kev cai nruj rau qhov plasticity, adhesion, drying shrinkage, drying strength, sintering shrinkage, sintering properties, fire resistance, thiab post firing whiteness ntawm kaolin, tab sis kuj muaj cov khoom siv tshuaj lom neeg, tshwj xeeb tshaj yog qhov muaj cov ntsiab lus chromogenic xws li hlau, titanium, tooj liab, chromium, thiab manganese, uas txo qhov dawb tom qab firing thiab tsim cov pob.
Qhov yuav tsum tau ua rau qhov loj ntawm cov khoom me me ntawm kaolin feem ntau yog tias qhov zoo dua, yog li cov av nkos porcelain muaj qhov zoo plasticity thiab lub zog ziab. Txawm li cas los xij, rau cov txheej txheem casting uas xav tau kev casting sai, kev nrawm nrawm grouting, thiab kev qhuav dej ceev, nws yog qhov tsim nyog los nce qhov loj ntawm cov khoom xyaw. Tsis tas li ntawd, qhov sib txawv ntawm crystallinity ntawm Kaolinite hauv kaolin kuj tseem yuav cuam tshuam rau kev ua haujlwm ntawm lub cev ceramic. Nrog rau qhov crystallinity zoo, qhov plasticity thiab kev sib txuas lus yuav qis, qhov ziab shrinkage yuav me me, qhov kub sintering yuav siab, thiab cov ntsiab lus impurity kuj yuav txo qis; Ntawm qhov tsis sib xws, nws cov plasticity siab dua, qhov ziab shrinkage ntau dua, qhov kub sintering qis dua, thiab cov ntsiab lus impurity sib xws kuj siab dua.