Kugawa kukula kwa tinthu
Tinthu kukula kugawa amatanthauza kuchuluka (kusonyezedwa mu kuchuluka okhutira) wa particles mu masoka kaolin mkati mwa kupatsidwa osiyanasiyana mosalekeza zosiyanasiyana tinthu kukula kwake (ananena mu mauna kukula kwa millimeters kapena micrometers).The tinthu kukula kugawa makhalidwe a kaolin ndi ofunika kwambiri kwa selectivity ndi ndondomeko ntchito ores.Kukula kwake kwa tinthu kumakhudza kwambiri mapulasitiki ake, kukhuthala kwamatope, kusinthasintha kwa ion, kuumba kwake, kuyanika ntchito, ndi ntchito ya sintering.Kaolin ore amafuna processing luso, ndipo ngati n'zosavuta pokonza kuti fineness chofunika wakhala mmodzi wa mfundo kuwunika khalidwe la ore.Aliyense dipatimenti mafakitale ali enieni tinthu kukula ndi fineness zofunika ntchito zosiyanasiyana kaolin.Ngati United States imafuna kaolin yogwiritsidwa ntchito ngati zokutira kukhala zosakwana 2 μ Zomwe zili m'ma akaunti za 90-95%, ndipo mapepala opangira mapepala ndi osachepera 2 μ Gawo la m ndi 78-80%.

Pulasitiki
Dongo lomwe limapangidwa ndi kuphatikiza kwa kaolin ndi madzi limatha kupunduka ndi mphamvu yakunja, ndipo mphamvu yakunja ikachotsedwa, imatha kusungabe katundu wopindika, womwe umatchedwa pulasitiki.Plasticity ndiye maziko a mapangidwe a kaolin m'matupi a ceramic, komanso ndiye chizindikiro chachikulu cha njirayi.Nthawi zambiri, index ya pulasitiki ndi index ya pulasitiki imagwiritsidwa ntchito kuyimira kukula kwa pulasitiki.Mlozera wa pulasitiki umatanthawuza malire a madzi omwe ali mudongo la kaolin kuchotsera madzi apulasitiki, omwe amawonetsedwa ngati peresenti, mwachitsanzo, W plasticity index=100 (W liquid limit - W plasticity limit).Mlozera wa pulasitiki umayimira mawonekedwe a dongo la kaolin.Katundu ndi mapindikidwe a mpira wadongo panthawi yoponderezedwa ndi kuphwanya akhoza kuyesedwa mwachindunji pogwiritsa ntchito mita ya plasticity, yomwe imafotokozedwa mu kg · cm.Nthawi zambiri, kuchuluka kwa pulasitiki kumapangitsa kuti mawonekedwe ake akhale abwino.Mapulasitiki a kaolin akhoza kugawidwa m'magulu anayi.

Plasticity Mphamvu Plasticity index Plasticity index
Pulasitiki wamphamvu> 153.6
Pulasitiki wapakatikati 7-152.5-3.6
Mapulasitiki ofooka 1-7<2.5<br /> Zopanda pulasitiki<1<br /> Chiyanjano

Kulumikizana kumatanthauza kuthekera kwa kaolin kuphatikiza ndi zinthu zopanda pulasitiki kupanga dongo la pulasitiki ndikukhala ndi mphamvu yowumitsa.The kutsimikiza kwa kumanga luso kumaphatikizapo kuwonjezera muyezo khwatsi mchenga (ndi misa zikuchokera 0.25-0.15 tinthu kukula kagawo kakang'ono kuwerengera 70% ndi 0.15-0.09mm tinthu kukula kachigawo kuwerengera 30%) kuti kaolin.Mchenga wapamwamba kwambiri pamene ukhoza kukhalabe ndi mpira wadongo wa pulasitiki ndipo mphamvu yosinthasintha itatha kuyanika imagwiritsidwa ntchito kudziwa kutalika kwake.Mchenga ukawonjezedwa, m'pamenenso dothi la kaolin limalumikizana kwambiri.Nthawi zambiri, kaolin yokhala ndi pulasitiki yolimba imakhalanso ndi luso lomanga.

Kuyanika ntchito
Kuyanika kumatanthawuza kugwira ntchito kwa matope a kaolin panthawi yowumitsa.Izi zikuphatikizapo kuyanika shrinkage, kuyanika mphamvu, ndi kuyanika tcheru.

Kuyanika shrinkage kumatanthauza kuchepa kwa dongo la kaolin pambuyo pouma ndi kuumitsa.Dongo la Kaolin nthawi zambiri limataya madzi m'thupi ndikuyanika kutentha koyambira 40-60 ℃ mpaka 110 ℃.Chifukwa cha kukhetsa kwa madzi, mtunda wa tinthu tafupikitsidwa, ndipo kutalika ndi kuchuluka kwa chitsanzocho zimachepa.Kuyanika shrinkage anawagawa liniya shrinkage ndi volumetric shrinkage, anasonyeza kuchuluka kwa kusintha m'litali ndi buku la matope kaolin pambuyo kuyanika kuti zonse kulemera.Kuyanika kwa kaolin nthawi zambiri kumakhala 3-10%.Kuchuluka kwa tinthu tating'onoting'ono, kukulirapo kwa malo enieni, kumapangitsa kuti pulasitiki ikhale yabwino, komanso kuyanika kwakuya.Kuchepa kwa mtundu womwewo wa kaolin kumasiyanasiyana malinga ndi kuchuluka kwa madzi owonjezera.

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.