ʻO kaolin he mineral non-metallic, he ʻano pālolo a me ka pālolo pōhaku i hoʻomalu ʻia e nā minerale pālolo kaolinite.No ka mea, he keʻokeʻo a maʻalahi, ua kapa ʻia ʻo ia ka lepo ao keʻokeʻo.Ua kapa ʻia ma hope o Gaoling Village, Jingde Town, Jiangxi Province.

ʻO kona kaolin maʻemaʻe he keʻokeʻo, palupalu a palupalu like me ka pālolo, a he maikaʻi kona kino a me nā waiwai kemika e like me ka plasticity a me ke kūpaʻa ahi.ʻO ka nui o ka hui ʻana o ka mineral i ka kaolinite, halloysite, hydromica, illite, montmorillonite, quartz, feldspar a me nā minerale ʻē aʻe.He nui ka hoʻohana ʻana o Kaolin, i hoʻohana nui ʻia i ka hana pepa, nā seramika a me nā mea refractory, a ukali ʻia e nā uhi, nā mea hoʻopihapiha hoʻopihapiha, enamel glazes a me nā mea sima keʻokeʻo, a me kahi mea liʻiliʻi i hoʻohana ʻia i nā plastics, pena, pigments, wili huila, penikala, nā mea hoʻomaʻemaʻe i kēlā me kēia lā, kopa, Pesticide, lāʻau lapaʻau, textile, petroleum, kemikala, mea kūkulu hale, pale aupuni a me nā ʻoihana ʻoihana ʻē aʻe.
ʻOliʻi keʻokeʻo ʻulaʻula
ʻO ke keʻokeʻo kekahi o nā palena nui o ka hana ʻenehana o kaolin, a ʻo kaolin me ka maʻemaʻe kiʻekiʻe he keʻokeʻo.Hoʻokaʻawale ʻia ka keʻokeʻo o kaolin i ke keʻokeʻo maoli a me ka keʻokeʻo ma hope o ka calcination.No nā mea waiwai ceramic, ʻoi aku ka nui o ka keʻokeʻo ma hope o ka calcination, a ʻoi aku ka kiʻekiʻe o ka calcination whiteness, ʻoi aku ka maikaʻi.Hoʻomaopopo ka ʻenehana seramika i ka hoʻomaloʻo ʻana ma 105 ° C ka maʻamau grading no ka keʻokeʻo maoli, a ʻo ka calcining ma 1300 ° C ka maʻamau no ka calcining whiteness.Hiki ke ana keokeo me ka mika keokeo.ʻO ka mika keʻokeʻo he mea hana e ana i ka ʻike ʻana o ka mālamalama me ka lōʻihi nalu o 3800-7000Å (ʻo ia hoʻi ʻo Angstrom, 1 Angstrom = 0.1 nm).Ma ka mika keʻokeʻo, e hoʻohālikelike i ka reflectance o ka hāpana e hoʻāʻo ʻia me ka hāpana maʻamau (e like me BaSO4, MgO, etc.), ʻo ia hoʻi, ka waiwai keʻokeʻo (no ka laʻana, ʻo ke keʻokeʻo 90 ʻo ia ka 90% o ka reflectance o ka hōʻailona maʻamau).

ʻO ka mālamalama kahi waiwai kaʻina e like me ke keʻokeʻo, e like me ke keʻokeʻo ma lalo o 4570Å (Angstrom) irradiation māmā hawewe.

ʻO ka waihoʻoluʻu o ka kaolin e pili nui ana i nā oxides metala a i ʻole nā ​​mea organik i loko.ʻO ka mea maʻamau, loaʻa iā Fe2O3, ʻo ia ka ʻulaʻula rose a me ka melemele brownish;Loaʻa iā Fe2+, ʻo ia hoʻi ka uliuli haʻahaʻa a me ka ʻōmaʻomaʻo;aia ka MnO2, he ʻeleʻele ʻeleʻele;he mea olaola, he melemele haikea, hina, uliuli, a me ka eleele.ʻO ka loaʻa ʻana o kēia mau mea haumia e hōʻemi i ka keʻokeʻo maoli o ka kaolin, a ʻo ka hao a me ka titanium mineral e pili pū i ka keʻokeʻo calcined, e hoʻoulu ai i nā stains a i ʻole nā ​​​​ʻili i ka porcelain.