I-Kaolin iyi-mineral engeyona eyensimbi, uhlobo lwedwala lobumba nobumba olubuswa amaminerali obumba we-kaolinite.Ngenxa yokuthi imhlophe futhi intekenteke, ibizwa nangokuthi inhlabathi yamafu amhlophe.Iqanjwe ngeGaoling Village, iJingde Town, esifundazweni saseJiangxi.

I-kaolin yayo emsulwa imhlophe, intekenteke futhi ithambile njengobumba, futhi inezici ezinhle zomzimba namakhemikhali njengepulasitiki nokumelana nomlilo.Ukwakheka kwayo kwamaminerali ikakhulukazi kwakhiwe i-kaolinite, i-halloysite, i-hydromica, i-illite, i-montmorillonite, i-quartz, i-feldspar namanye amaminerali.I-Kaolin inezinhlobonhlobo zokusetshenziswa, ikakhulukazi ezisetshenziselwa ukwenza iphepha, izitsha zobumba kanye nezinto eziphikisayo, kulandelwa ukugqoka, izigcwalisi zenjoloba, izicwebezelisi zoqweqwe lwawo kanye nezinto ezingavuthiwe zikasimende, kanye nenani elincane elisetshenziswa kumapulasitiki, opende, ombala, amasondo okugaya, amapensela, izimonyo zansuku zonke, insipho, Isibulala-zinambuzane, imithi, izindwangu, i-petroleum, amakhemikhali, izinto zokwakha, ezokuvikela kazwelonke kanye neminye imikhakha yezimboni.
Ukukhanya Okumhlophe Okugoqiwe
Ubumhlophe bungenye yemingcele eyinhloko yokusebenza kobuchwepheshe be-kaolin, futhi i-kaolin enobumsulwa obuphakeme imhlophe.Ubumhlophe be-kaolin buhlukaniswe bumhlophe bemvelo kanye nomhlophe ngemva kokubala.Ngezinto zokusetshenziswa ze-ceramic, ubumhlophe ngemuva kokubala bubaluleke kakhulu, futhi ukuphakama kobumhlophe be-calcination, ikhwalithi engcono kakhulu.Ubuchwepheshe be-ceramic bubeka ukuthi ukomisa ku-105°C yizinga lokugreda lokuba mhlophe kwemvelo, futhi ukubala ku-1300°C yizinga lokugreda lokubala ubumhlophe.Ubumhlophe bungalinganiswa imitha emhlophe.Imitha yobumhlophe iyisisetshenziswa esikala ukubonakaliswa kokukhanya ngobude begagasi obungu-3800-7000Å (okungukuthi, Angstrom, 1 Angstrom = 0.1 nm).Kumitha emhlophe, qhathanisa ukubukeka kwesampula okufanele ihlolwe nesampula ejwayelekile (efana ne-BaSO4, MgO, njll.), okungukuthi, inani lobumhlophe (isibonelo, ubumhlophe obungu-90 busho u-90% wokubonisa isampula ejwayelekile).

Ukukhanya kuyisici senqubo esifana nobumhlophe, okulingana nobumhlophe obungaphansi kuka-4570Å (Angstrom) umsebe wokukhanya wamaza.

Umbala we-kaolin uhlobene kakhulu nama-oxide ensimbi noma izinto eziphilayo eziqukethe.Ngokuvamile, iqukethe i-Fe2O3, ebomvu nephuzi ngokunsundu;iqukethe i-Fe2+, enombala oluhlaza okwesibhakabhaka ophaphathekile noluhlaza okotshani;iqukethe i-MnO2, ensundu ngokuphaphathekile;iqukethe izinto eziphilayo, okuphuzi ngokuphaphathekile, okumpunga, okuluhlaza okwesibhakabhaka, nokumnyama.Ukuba khona kwalokhu kungcola kunciphisa ubumhlophe bemvelo be-kaolin, futhi amaminerali ensimbi ne-titanium nawo athinta ubumhlophe obubaliwe, okubangela amabala noma izibazi ku-porcelain.