He kohuke kore-whakarewa te Kaolin, he uku me te toka uku i hangaia mai i ngā kohuke uku kaolinite. Nā tōna āhua mā, ngawari hoki, e mōhiotia ana ko te oneone Baiyun. I tapaina i muri i te Kāinga o Gaoling i Jingdezhen, Porowini o Jiangxi.

He mā, he ātaahua, he ngawari hoki te kakano o te kaolin parakore, ā, he pai ngā āhuatanga ā-tinana me te matū pērā i te kirihou me te ātete ahi. Ko te nuinga o ngā kohuke he mea tito mai i ngā kohuke pērā i te kaolinite, te halloysite, te hydromica, te illite, te montmorillonite, tae atu ki te quartz me te feldspar. He whānuitia te whakamahinga o te kaolin i roto i te hanga pepa, i ngā uku, me ngā rauemi ātete ahi, ā, muri iho ko ngā paninga, ngā whakakī rapa, ngā karaihe enamel, me ngā rauemi mata sima mā. He iti noa te whakamahinga i roto i te kirihou, te peita, ngā tae, ngā wira huri, ngā pene, ngā whakapaipai o ia rā, te hopi, ngā patu pepeke, ngā rongoā, ngā kakahu, te hinu, te matū, ngā rauemi hanga, te tiaki whenua, me ētahi atu rāngai ahumahi.

Ko ngā kohuke kei roto i te kaolin i te taiao ka wehea te nuinga ki ngā kohuke uku me ngā kohuke kore-uku. Ko ngā kohuke uku ko ngā kohuke rōpū kaolinite me te iti o te montmorillonite, te mika, me te chlorite; ko ngā kohuke kore-uku ko te nuinga o te feldspar, te quartz, me ngā hydrates, me ētahi kohuke rino pēnei i te hematite, te siderite, te limonite, ngā kohuke titanium pēnei i te rutile, me ngā mea rauropi pēnei i ngā muka tipu. Ko te mea matua e whakatau ana i te mahi a te kaolin ko ngā kohuke uku.

Kua noho te kaolin hei rauemi mata nui mō ngā tini ahumahi pēnei i te hanga pepa, te uku, te rapa, te miihini matū, te paninga, te rongoā, me te tiaki whenua.

Ko te umanga uku te umanga tuatahi me te ahumahi tino whānuitia mō te whakamahinga o te kaolin. Ko te horopeta whānui he 20% ki te 30% o te tauira. Ko te mahi a te kaolin i roto i ngā uku he whakauru i te Al2O3, he mea pai mō te hanganga o te mullite, hei whakapai ake i tōna pumau matū me te kaha o te sintering. I te wā o te sintering, ka pirau te kaolin hei hanga mullite, ka hanga te anga matua mō te kaha o te tinana. Ka taea e tēnei te ārai i te whakarerekētanga o te hua, te whakawhānui ake i te pāmahana mura, me te hoatu hoki i te tinana ki tētahi taumata o te mā. I taua wā anō, he taumata o te kirihou, te piri, te whakatārewatanga, me te kaha ki te here te kaolin, ka hoatu he pai te āhua o te paru porcelain me te glaze, ka whai hua te tinana paru uku mō te tinana waka me te grout, ka ngāwari te hanga. Mena ka whakamahia ki roto i ngā waea, ka taea te whakanui ake i te whakamarumaru me te whakaiti i te ngaronga dielectric.

Ehara i te mea ko ngā uku anake ngā whakaritenga tino pakari mō te kirihou, te piri, te whakahekenga maroke, te kaha maroke, te whakahekenga sintering, ngā āhuatanga sintering, te ātete ahi, me te mā o te kaolin i muri i te tahunga, engari kei roto hoki ngā āhuatanga matū, inā koa te noho mai o ngā huānga chromogenic pērā i te rino, te titanium, te parahi, te chromium, me te manganese, e whakaiti ana i te mā i muri i te tahunga, ka puta he ira.

Ko te whakaritenga mō te rahi o te matūriki o te kaolin ko te pai ake o te angiangi, kia pai ai te kirihou me te kaha maroke o te paru porcelain. Heoi, mō ngā tukanga whakarewa e hiahia ana kia tere te whakarewa, kia tere te tere o te whakatō, me te tere o te maroke, me whakanui ake te rahi o te matūriki o ngā kai. Hei tāpiri, ko te rerekētanga o te tioata o te kaolinite i roto i te kaolin ka pā nui ki te mahi a te tukanga o ngā pire porcelain. Mena he pai te tioata, he iti te kirihou me te kaha piri, he iti te whakahekenga maroke, he teitei te pāmahana sintering, ā, ka iti hoki te ihirangi poke; Engari, he teitei ake tōna kirihou, he nui ake te whakahekenga maroke, he iti ake te pāmahana sintering, ā, he teitei ake hoki te ihirangi poke e rite ana.