Kaolin yog ib hom av uas tsis yog hlau, ib hom av nplaum thiab pob zeb av nplaum uas muaj cov av nplaum kaolinite nyob hauv. Vim tias nws dawb thiab mos, nws kuj hu ua av huab dawb. Nws tau muab lub npe rau lub zos Gaoling, Jingde Town, Jiangxi Province.

Nws cov kaolin ntshiab yog dawb, mos thiab zoo li av nplaum, thiab muaj cov khoom zoo thiab tshuaj lom neeg xws li plasticity thiab hluav taws tsis kam. Nws cov khoom siv hauv av feem ntau yog ua los ntawm kaolinite, halloysite, hydromica, illite, montmorillonite, quartz, feldspar thiab lwm yam minerals. Kaolin muaj ntau yam kev siv, feem ntau yog siv rau hauv kev ua ntawv, ceramics thiab cov khoom siv refractory, ua raws li cov txheej txheem, roj hmab fillers, enamel glazes thiab cov khoom siv cement dawb, thiab me me siv rau hauv yas, xim, pigments, sib tsoo log, cwj mem, tshuaj pleev ib ce txhua hnub, xab npum, tshuaj tua kab, tshuaj, textile, roj av, tshuaj lom neeg, cov ntaub ntawv tsim kho, kev tiv thaiv lub teb chaws thiab lwm yam kev lag luam.
Qhov Dawb Huv ntawm Folded Brightness
Qhov dawb yog ib qho ntawm cov yam ntxwv tseem ceeb ntawm kev ua tau zoo ntawm kaolin, thiab kaolin uas muaj qhov huv siab yog dawb. Qhov dawb ntawm kaolin muab faib ua qhov dawb ntuj thiab qhov dawb tom qab calcination. Rau cov khoom siv ceramic, qhov dawb tom qab calcination tseem ceeb dua, thiab qhov dawb calcination siab dua, qhov zoo dua. Cov thev naus laus zis ceramic hais tias ziab ntawm 105 ° C yog tus qauv qib rau qhov dawb ntuj, thiab calcining ntawm 1300 ° C yog tus qauv qib rau calcining dawb. Qhov dawb tuaj yeem ntsuas nrog lub ntsuas dawb. Lub ntsuas dawb yog lub cuab yeej uas ntsuas qhov cuam tshuam ntawm lub teeb nrog lub wavelength ntawm 3800-7000Å (piv txwv li Angstrom, 1 Angstrom = 0.1 nm). Hauv lub ntsuas dawb, piv qhov kev cuam tshuam ntawm cov qauv uas yuav tsum tau kuaj nrog cov qauv txheem (xws li BaSO4, MgO, thiab lwm yam), uas yog, tus nqi dawb (piv txwv li, qhov dawb 90 txhais tau tias 90% ntawm qhov kev cuam tshuam ntawm cov qauv txheem).

Qhov kaj yog ib yam khoom zoo ib yam li qhov dawb, uas sib npaug rau qhov dawb nyob rau hauv 4570Å (Angstrom) wavelength lub teeb irradiation.

Cov xim ntawm kaolin feem ntau yog cuam tshuam nrog cov hlau oxides lossis cov organic uas nws muaj. Feem ntau, nws muaj Fe2O3, uas yog xim liab liab thiab xim av daj; muaj Fe2+, uas yog xiav daj thiab ntsuab daj; muaj MnO2, uas yog xim av daj; muaj cov organic, uas yog daj daj, grey, xiav, thiab dub. Qhov muaj cov khoom tsis huv no txo ​​qhov dawb ntawm kaolin, thiab cov hlau thiab titanium minerals kuj cuam tshuam rau qhov dawb calcined, ua rau muaj cov xim av lossis cov caws pliav hauv porcelain.