Kaolin ndi mchere sanali zitsulo, umene ndi dongo ndi dongo thanthwe makamaka wopangidwa ndi kaolinite gulu dongo mchere.Chifukwa cha mawonekedwe ake oyera komanso osalimba, amadziwikanso kuti dothi la Baiyun.Amatchedwa mudzi wa Gaoling ku Jingdezhen, m'chigawo cha Jiangxi.

Kaolin yake yoyera ndi yoyera, yofewa komanso yofewa, yokhala ndi thupi labwino komanso mankhwala monga pulasitiki ndi kukana moto.Mapangidwe ake amchere amapangidwa makamaka ndi mchere monga kaolinite, halloysite, hydromica, illite, montmorillonite, komanso quartz ndi feldspar.Kaolin amagwiritsidwa ntchito kwambiri popanga mapepala, ziwiya zadothi, ndi zomangira, zotsatiridwa ndi zokutira, zodzaza mphira, zowulira enamel, ndi zida zoyera za simenti.Zochepa zimagwiritsidwa ntchito mu pulasitiki, utoto, inki, mawilo opera, mapensulo, zodzoladzola za tsiku ndi tsiku, sopo, mankhwala ophera tizilombo, mankhwala, nsalu, mafuta, mankhwala, zomangira, chitetezo cha dziko, ndi mafakitale ena.

Michere yomwe ili mu kaolin m'chilengedwe imagawidwa kukhala mchere wadothi ndi mchere womwe si wadongo.Dongo mchere makamaka monga kaolinite gulu mchere ndi pang'ono montmorillonite, mica, ndi chlorite;Mchere wosakhala wadongo makamaka umaphatikizapo feldspar, quartz, ndi hydrates, komanso mchere wina wachitsulo monga hematite, siderite, limonite, mchere wa titaniyamu monga rutile, ndi zinthu zachilengedwe monga ulusi wa zomera.Chinthu chachikulu chomwe chimatsimikizira kugwira ntchito kwa kaolin ndi mchere wadongo.

Kaolin wakhala zofunika mchere zopangira ambiri mafakitale monga papermaking, zoumba, mphira, uinjiniya mankhwala, zokutira, mankhwala, ndi chitetezo dziko.

Makampani a ceramic ndiye gawo loyamba komanso logwiritsidwa ntchito kwambiri popanga kaolin.Mlingo wamba ndi 20% mpaka 30% ya formula.Udindo wa kaolin muzoumba ndikuyambitsa Al2O3, yomwe imapindulitsa pakupanga mullite, kupititsa patsogolo kukhazikika kwake kwamankhwala ndi mphamvu ya sintering.Pa sintering, kaolin amawola kupanga mullite, kupanga chimango chachikulu cha mphamvu ya thupi.Izi zingalepheretse kusinthika kwa mankhwala, kukulitsa kutentha kwa kuwombera, komanso kupatsa thupi kuyera kwina.Pa nthawi yomweyo, kaolin ali ndi mlingo wina wa pulasitiki, adhesion, kuyimitsidwa, ndi kugwirizana luso, endoding dope zadothi ndi glaze ndi formability wabwino, kupanga matope a ceramic thupi lopindulitsa kwa thupi la galimoto ndi grouting, kuti zikhale zosavuta kupanga.Ngati amagwiritsidwa ntchito mu mawaya, amatha kuwonjezera kusungunula ndikuchepetsa kutayika kwa dielectric.

Ceramics osati ndi zofunika okhwima kwa plasticity, adhesion, kuyanika shrinkage, kuyanika mphamvu, sintering shrinkage, katundu sintering, kukana moto, ndi positi kuwombera whiteness wa kaolin, komanso kumakhudza katundu mankhwala, makamaka pamaso pa zinthu chromogenic monga chitsulo, titaniyamu, mkuwa, chromium, ndi manganese, zomwe zimachepetsa kuyera kwa positi ndikutulutsa mawanga.

The chofunika tinthu kukula kwa kaolin zambiri kuti bwino bwino, kuti zadothi matope ali plasticity wabwino ndi kuyanika mphamvu.Komabe, poponya njira zomwe zimafuna kuponya mwachangu, kuthamanga kwa grouting, komanso kuthamanga kwamadzi, ndikofunikira kuwonjezera kukula kwa tinthu tating'onoting'ono.Komanso, kusiyana kwa crystallinity wa kaolinite mu kaolin kudzakhudzanso kwambiri ndondomeko ntchito ya billet zadothi.Ngati crystallinity ndi yabwino, pulasitiki ndi kugwirizanitsa mphamvu ndizochepa, shrinkage yowumitsa ndi yaying'ono, kutentha kwa sintering kumakhala kwakukulu, ndipo zonyansa zimachepetsedwa;M'malo mwake, mapulasitiki ake ndi apamwamba, kuyanika kwakuya kumakhala kwakukulu, kutentha kwa sintering kumakhala kochepa, ndipo zonyansa zofanana nazo zimakhalanso zapamwamba.