Gaoling rock waa macdan aan macdan ahayn oo aad muhiim u ah.Kaolin-ka lagu soo saaro burburin, shiidi iyo calcination ayaa leh taxane ah sifooyin aad u wanaagsan, waxaana si weyn looga isticmaalay warshado badan, gaar ahaan warshadaha dahaarka.Waqtigan xaadirka ah, qiimaha badeecada kaolin ee caadiga ah waa mid hooseeya, laakiin awooddeeda daboolidu maaha mid ku habboon, taas oo xaddidaysa codsigeeda gudaha gudaha lakabyada sare.Tan waxaa lagu muujiyey in kororka xajmiga walxaha, xoogga daboolka ee kaolin-ka calcined si tartiib tartiib ah loo kordhiyo, sababta ugu weyni waa in qaybaha kaolin-ka ee ugu fiican, ay sii weynaanayaan xoogga daboolka.Kaolin shiidiwaa qalab wax soo saar oo loo isticmaalo farsamaynta 300-1250 ultra fine kaolin si loo hagaajiyo awooda daboolida.Waa maxay faa'iidooyinkeeda?Maanta oo ay samaysay kaolin MillGuilin Hongcheng Hordhac faahfaahsan adiga.

Ka dib markii la burburiyo, shiidi iyo superrefining, 850 ℃ calcination, kaas oo bixiya tixraac wax ku ool ah codsiga iyo habka qoto dheer ee nidaamka dhuxusha kaolin.Maaddaama ay ku badan tahay silikoon iyo aluminium, kaolin waa mid jilicsan oo ay adagtahay in la xidho.Waxaa loo baahan yahay inay noqoto mid aad u fiican (325 mesh shaandho 5% ~ 10%), iyo warshadda Raymond ee caadiga ah ma gaari karto wax-soosaar sare iyadoo lagu salaynayo ganaaxan.