Kaolin ndi mchere wosakhala wachitsulo, womwe ndi dongo ndi mwala wa dongo womwe umapangidwa makamaka ndi mchere wa dongo wa gulu la kaolinite. Chifukwa cha mawonekedwe ake oyera komanso ofewa, umadziwikanso kuti nthaka ya Baiyun. Dzina lake limatengera Gaoling Village ku Jingdezhen, Chigawo cha Jiangxi.

Kaolin yake yoyera ndi yoyera, yofewa, komanso yofewa, yokhala ndi zinthu zabwino zakuthupi komanso zamakemikolo monga pulasitiki komanso kukana moto. Kapangidwe kake ka mchere kamakhala ndi mchere monga kaolinite, halloysite, hydromica, illite, montmorillonite, komanso quartz ndi feldspar. Kaolin imagwiritsidwa ntchito kwambiri popanga mapepala, zinthu zadothi, ndi zinthu zotsutsa, kutsatiridwa ndi zokutira, zodzaza rabara, ma glaze a enamel, ndi zinthu zopangira simenti yoyera. Kanthu kakang'ono kamagwiritsidwa ntchito mu pulasitiki, utoto, utoto, mawilo opukutira, mapensulo, zodzoladzola za tsiku ndi tsiku, sopo, mankhwala ophera tizilombo, mankhwala, nsalu, mafuta, mankhwala, zipangizo zomangira, chitetezo cha dziko, ndi mafakitale ena.

Michere yomwe ili mu kaolin m'chilengedwe imagawidwa makamaka m'magawo a mchere wa dongo ndi mchere wosakhala dongo. Michere ya dongo makamaka imaphatikizapo mchere wa gulu la kaolinite ndi montmorillonite yochepa, mica, ndi chlorite; Michere yosakhala dongo makamaka imaphatikizapo feldspar, quartz, ndi hydrates, komanso mchere wina wachitsulo monga hematite, siderite, limonite, titanium monga rutile, ndi zinthu zachilengedwe monga ulusi wa zomera. Chinthu chachikulu chomwe chimatsimikizira magwiridwe antchito a kaolin ndi mchere wa dongo.

Kaolin yakhala chinthu chofunikira kwambiri m'mafakitale ambiri monga kupanga mapepala, zoumba, rabala, uinjiniya wa mankhwala, zokutira, mankhwala, ndi chitetezo cha dziko.

Makampani opanga zinthu zoumba ndi makampani oyamba komanso ogwiritsidwa ntchito kwambiri pakugwiritsa ntchito kaolin. Mlingo wamba ndi 20% mpaka 30% ya fomula. Ntchito ya kaolin mu zinthu zoumba ndi kuyambitsa Al2O3, yomwe ndi yothandiza popanga mullite, kukonza kukhazikika kwa mankhwala ake komanso mphamvu zake zoumba. Pa nthawi youmba, kaolin imawola kuti ipange mullite, ndikupanga chimango chachikulu cha mphamvu ya thupi. Izi zitha kuletsa kusintha kwa chinthucho, kukulitsa kutentha kwa moto, komanso kupatsa thupi kuyera kwina. Nthawi yomweyo, kaolin imakhala ndi pulasitiki, kumamatira, kuyimitsa, ndi mphamvu yolumikizana, kupatsa matope a porcelain ndi glaze mawonekedwe abwino, kupangitsa thupi la matope a ceramic kukhala lothandiza pa thupi la galimoto ndi grouting, zomwe zimapangitsa kuti likhale losavuta kupanga. Ngati ligwiritsidwa ntchito mu mawaya, limatha kuwonjezera kutentha ndikuchepetsa kutayika kwa dielectric.

Zadothi sizimangokhala ndi zofunikira zokhazikika pa pulasitiki, kumatira, kuuma, mphamvu youma, kuuma, mphamvu zouma, kuuma, kukana moto, komanso kuyera kwa kaolin pambuyo poyaka moto, komanso zimakhudzanso mphamvu za mankhwala, makamaka kupezeka kwa zinthu monga chitsulo, titaniyamu, mkuwa, chromium, ndi manganese, zomwe zimachepetsa kuyera pambuyo poyaka moto ndikupanga mawanga.

Chofunika cha kukula kwa tinthu ta kaolin nthawi zambiri chimakhala chakuti tinthu tating'onoting'ono ta kaolin timakhala tabwino kwambiri, kuti matope a porcelain akhale ndi pulasitiki wabwino komanso mphamvu youma. Komabe, pa njira zopangira zinthu zomwe zimafuna kupopera mwachangu, liwiro la grouting lofulumira, komanso liwiro la kusowa madzi m'thupi, ndikofunikira kuwonjezera kukula kwa tinthu tating'onoting'ono ta zosakaniza. Kuphatikiza apo, kusiyana kwa kristalo wa kaolinite mu kaolin kudzakhudzanso kwambiri momwe zinthu zimagwirira ntchito. Ngati kristalo ndi yabwino, pulasitiki ndi mphamvu yolumikizirana ndizochepa, kuphwanyika kouma ndi kochepa, kutentha kwa sintering ndi kwakukulu, ndipo kuchuluka kwa zodetsa kumachepanso; M'malo mwake, pulasitiki yake ndi yayikulu, kuphwanyika kouma ndi kwakukulu, kutentha kwa sintering ndi kochepa, ndipo kuchuluka kwa zodetsa kofanana nako ndikokweranso.