Kaolin ivhu risiri resimbi, rudzi rwedombo revhu nevhu rine zvicherwa zvevhu rekaolinite. Nekuti ivhu jena uye rakapfava, rinodaidzwawo kuti ivhu jena regore. Rakatumidzwa zita iri kubva kuGaoling Village, Jingde Town, Jiangxi Province.

Kaolin yayo yakachena yakaita sevhu jena, inonyorova uye yakapfava, uye ine hunhu hwakanaka hwemuviri nemakemikari senge plasticity uye inodzivirira moto. Muumbirwo wayo wezvicherwa unonyanya kuumbwa nekaolinite, halloysite, hydromica, illite, montmorillonite, quartz, feldspar nezvimwe zvicherwa. Kaolin ine mashandisirwo akasiyana-siyana, anonyanya kushandiswa mukugadzira mapepa, ceramics uye zvinhu zvinoramba, ichiteverwa ne coatings, rabha fillers, enamel glazes uye chena simende zvinhu zvakabikwa, uye shoma inoshandiswa mupurasitiki, pendi, pigments, grinding wheels, mapenzura, zvizoro zvezuva nezuva, sipo, Pesticide, mishonga, machira, peturu, makemikari, zvinhu zvekuvaka, dziviriro yenyika nezvimwe zvikamu zveindasitiri.
Kupenya Kwakapetwa Kuchena
Kuchena ndechimwe chezvinhu zvikuru zvinoita kuti kaolin ishande zvakanaka, uye kaolin ine kuchena kwakanyanya ichena. Kuchena kwekaolin kwakakamurwa kuita kuchena kwechisikigo uye kuchena mushure mekucheneswa. Kune zvinhu zveceramic, kuchena mushure mekucheneswa kwakakosha, uye kuchena kwe calcination kwakakwira, kunaka kunowedzera. Tekinoroji yeceramic inoti kuomesa pa105°C ndiyo chiyero chekuyera kuchena kwechisikigo, uye kucheneswa pa1300°C ndiyo chiyero chekuyera kuchena kwe calcin. Kuchena kunogona kuyerwa ne whiteness meter. whiteness meter chishandiso chinoyera refleance yechiedza chine wavelength ye3800-7000Å (kureva Angstrom, 1 Angstrom = 0.1 nm). Mu whiteness meter, enzanisa refleance yemuenzaniso inofanira kuyedzwa ne standard sample (yakadai seBaSO4, MgO, nezvimwewo), kureva kuti, whiteness value (semuenzaniso, whiteness 90 inoreva 90% ye refleance ye standard sample).

Kupenya chinhu chinoratidza maitiro akafanana nekuchena, izvo zvakaenzana nekuchena pasi pe4570Å (Angstrom) wavelength light irradiation.

Ruvara rwekaolin runonyanya kuenderana nesimbi oxides kana organic matter iri mairi. Kazhinji, ine Fe2O3, ine ruvara rutsvuku uye yero yakasvibira; ine Fe2+, ine bhuruu rakachenuruka uye girini rakachenuruka; ine MnO2, ine ruvara rwebrown rakachenuruka; ine organic matter, ine yero yakachenuruka, grey, bhuruu, uye dema. Kuvapo kwetsvina iyi kunoderedza kuchena kwechisikigo kwekaolin, uye iron ne titanium minerals zvinokanganisawo kuchena kwe calcined, zvichikonzera mavara kana mavanga mu porcelain.