Kaolin ndi mchere sanali zitsulo, amene ndi mtundu wa dongo ndi dongo thanthwe makamaka wopangidwa ndi gulu Kaolinite 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 wake woyera ndi woyera, wosakhwima ndi Mollisol ngati, ndi pulasitiki wabwino, kukana moto ndi zina thupi ndi mankhwala katundu.Mapangidwe ake amchere amapangidwa makamaka ndi Kaolinite, halloysite, hydromica, Illite, Montmorillonite, quartz, feldspar ndi mchere wina.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.
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.Panthawi imodzimodziyo, kaolin ali ndi pulasitiki, kugwirizanitsa, kuyimitsidwa ndi kugwirizanitsa mphamvu, zomwe zimapangitsa kuti dongo ladongo ndi glaze likhale ndi mawonekedwe abwino, zomwe zimapangitsa kuti thupi ladongo likhale lothandizira kutembenuka, kupukuta ndi 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 ntchito zamakono za thupi ceramic.Ndi crystallinity yabwino, pulasitiki ndi luso logwirizanitsa lidzakhala lochepa, shrinkage yowumitsa idzakhala yaying'ono, kutentha kwa sintering kudzakhala kwakukulu, ndipo zonyansa zidzachepetsedwa;M'malo mwake, mapulasitiki ake ndi apamwamba, kuyanika kwakuya kumakhala kwakukulu, kutentha kwa sintering kumakhala kochepa, ndipo zonyansa zofanana nazo zimakhalanso zapamwamba.
Nthawi yotumiza: Jul-25-2023