I-Kaolin, i-mineral engeyona insimbi, uhlobo lobumba nedwala lobumba oluqukethe ikakhulukazi amaminerali obumba eqembu le-kaolinite. Ngenxa yokubukeka kwayo okumhlophe nokubucayi, yaziwa nangokuthi inhlabathi ye-Baiyun. Izingxenye eziyinhloko yi-aluminium trioxide ne-silicon dioxide.

I-kaolin yayo emsulwa imhlophe, ithambile, futhi ithambile, inezakhiwo ezinhle zomzimba nezamakhemikhali njengokuqina kanye nokumelana nomlilo. Ukwakheka kwayo kwamaminerali kwakhiwe kakhulu yi-kaolinite, i-halloysite, i-hydromica, i-illite, i-montmorillonite, kanye namaminerali afana ne-quartz ne-feldspar.

Izici zenqubo:

1. Ukukhanya Okumhlophe – Umhlophe ungenye yezindlela eziyinhloko zokusebenza kahle kwe-kaolin, kanti i-kaolin emsulwa kakhulu imhlophe. Umhlophe we-kaolin uhlukaniswe ngomhlophe wemvelo kanye nomhlophe onama-calcium. Kwezinto zokusetshenziswa ze-ceramic, umhlophe ngemva kwe-calcination ubaluleke kakhulu, futhi uma umhlophe onama-calcium uphakeme, ikhwalithi iba ngcono.

2. Ukusatshalaliswa kosayizi wezinhlayiya – Ukusatshalaliswa kosayizi wezinhlayiya kubhekisela engxenyeni (evezwa ngokuqukethwe kwephesenti) yezinhlayiya ku-kaolin yemvelo ngaphakathi kobubanzi obunikeziwe bobukhulu bezinhlayiya eziqhubekayo ezahlukene (ezivezwa ngamamilimitha noma nge-mesh ye-micrometer). Umnyango ngamunye wezimboni unezidingo ezithile zobukhulu bezinhlayiya kanye nokuqina kwe-kaolin ngezinhloso ezahlukene. I-United States idinga ukuthi i-kaolin esetshenziswa njengesembozo ibe nokuqukethwe okungaphansi kwama-2 μ m (6250 mesh), okubalwa ama-90-95%, kanye nokugcwalisa iphepha okunokuqukethwe okungaphansi kwama-2 μ m kubalwa ama-78-80%. Ngezinqubo zokusakaza ezidinga ukusatshalaliswa okusheshayo, isivinini sokugrutha esisheshayo, kanye nesivinini sokuphelelwa amanzi emzimbeni, kubalulekile ukwandisa usayizi wezinhlayiya zezithako.

3. Ukumiswa: Ukumiswa kanye nokuhlakazeka kubhekisela ezimpahleni ze-kaolin okunzima ukuzibamba uma zihlakazeka emanzini. Eyaziwa nangokuthi i-anti flocculation. Uma usayizi wezinhlayiya uncane, kulapho ukumiswa kuba ngcono khona. I-Kaolin esetshenziswa embonini ye-enamel idinga izakhiwo ezinhle zokumiswa. Ukusebenza kokumiswa kwesampula ehlakazekile emanzini ngokuvamile kunqunywa izinga layo lokuhlala isikhathi eside esikhathini esithile.

4. Ukufakwa kogesi: I-kaolin esezingeni eliphezulu inezakhiwo ezinhle zokufakwa kogesi, ezingasetshenziswa ukwenza izitsha zobumba ezisebenzisa imvamisa ephezulu kanye nezitsha zobumba ezingenantambo. Izinga lokusebenza kokufakwa kogesi lingalinganiswa ngekhono layo lokubekezelela ukuphuka kukagesi.

Ukuhlukaniswa:

i-kaolin ehlanjwe ngamanzi ehlanziwe nge-calcium metakaolin

Ukusetshenziswa:

I-Kaolin inezinhlobonhlobo zokusetshenziswa, ikakhulukazi esetshenziswa ekwenzeni iphepha, izinto zobumba, nezinto eziphikisayo, kulandelwe yizimbozo, izihlungi zerabha, ama-enamel glaze, kanye nezinto zokusetshenziswa zesimende esimhlophe. Ngobuningi obuncane, isetshenziswa emikhakheni yezimboni njengepulasitiki, upende, imibala, amasondo okugaya, amapensela, izimonyo zansuku zonke, insipho, izindwangu, uphethiloli, amakhemikhali, izinto zokwakha, njll.