Kaolin is a non-metallic mineral, inova ivhu nevhu dombo kunyanya inoumbwa kaolinite boka ivhu zvicherwa.Nekuda kwekuchena kwayo uye kutetepa kutaridzika, inozivikanwa zvakare seBaiyun ivhu.Inotumidzwa zita reGaoling Village muJingdezhen, Jiangxi Province.

Kaolin yayo yakachena ichena, yakapfava, uye yakapfava mukugadzirwa kwayo, ine yakanaka yemuviri uye makemikari zvinhu zvakaita sepurasitiki uye kudzivirira moto.Kuumbwa kwayo kwemaminerari kunonyanya kuumbwa nemaminerari akadai se kaolinite, halloysite, hydromica, illite, montmorillonite, pamwe nequartz uye feldspar.Kaolin inoshandiswa zvakanyanya mukugadzira mapepa, ceramics, uye refractory zvinhu, inoteverwa neaya, mafirita erabha, enamel glaze, uye chena simende zvinhu.Mari shoma inoshandiswa mupurasitiki, pendi, pigment, mavhiri ekukuya, mapenzura, zvizorwa zvemazuva ese, sipo, mishonga yekuuraya zvipembenene, mishonga yemishonga, machira, peturu, makemikari, zvekuvaka, kudzivirira kwenyika, uye mamwe maindasitiri.

Maminerari ari mu kaolin muzvisikwa anonyanya kukamurwa kuita zvicherwa zvevhu uye zvisiri zvevhu zvicherwa.Clay minerals inonyanya kusanganisira kaolinite group minerals uye shoma shoma ye montmorillonite, mica, uye chlorite;Zvicherwa zvisiri zvevhu zvinonyanya kusanganisira feldspar, quartz, uye hydrates, pamwe nemamwe maminerari esimbi akadai sehematite, siderite, limonite, titanium zvicherwa zvakaita serutile, uye organic zvinhu zvakaita semiti yezvirimwa.Chinhu chikuru chinotarisa kushanda kwekaolin ivhu revhu.

Kaolin rave rinokosha chicherwa mbishi zvinhu zvakawanda maindasitiri akadai papermaking, Ceramics, rabha, kemikari engineering, coatings, mishonga, uye nyika kudzivirira.

Indasitiri yeceramic ndiyo yekutanga uye inonyanya kushandiswa indasitiri yekushandiswa kwekaolin.Iyo yakawanda dosage ndeye 20% kusvika 30% yeformula.Basa re kaolin mumakeramics nderokuzivisa Al2O3, iyo inobatsira pakuumbwa kwemullite, inovandudza kugadzikana kwemakemikari uye sintering simba.Munguva yekupisa, kaolin inoora kuita mullite, ichigadzira chimiro chikuru chekusimba kwemuviri.Izvi zvinogona kudzivirira deformation yechigadzirwa, kuwedzera kupisa kwekupisa, uye zvakare kupa muviri imwe dhigirii yekuchena.Panguva imwecheteyo, kaolin ine imwe dhigirii yepurasitiki, kunamatira, kumiswa, uye kugona kubatanidza, inopa madhaka eporcelain uye kupenya nekuumbwa kwakanaka, zvichiita kuti muviri wedhaka redope ubatsire muviri wemotokari uye grouting, zvichiita kuti zvive nyore kuumba.Kana yakashandiswa muwaya, inogona kuwedzera kuvharidzira uye kuderedza dielectric kurasikirwa.

Ceramics haingove nezvinodiwa zvakasimba zvepurasitiki, kunamatira, kuomesa shrinkage, kuomesa simba, sintering shrinkage, sintering properties, kudzivirira moto, uye post firing whiteness ye kaolin, asiwo zvinosanganisira zvinhu zvemakemikari, kunyanya kuvapo kwezvinhu zvechromogenic zvakadai sesimbi, titanium, mhangura, chromium, uye manganese, izvo zvinoderedza kuchena kwemashure uye kuburitsa mavara.

Chinodiwa chekukura kwekaolin kazhinji ndechekuti iyo yakatsetseka ive nani, kuitira kuti madhaka eporcelain ave nepurasitiki yakanaka uye kuomesa simba.Nekudaro, kune yekukanda maitiro ayo anoda kukurumidza kukanda, kukurumidza grouting kumhanya, uye kupera simba kwemvura, zvinodikanwa kuwedzera saizi yezvikamu.Mukuwedzera, mutsauko mukristallinity ye kaolinite mu kaolin ichaitawo zvakanyanya kushanda kwemaitiro e porcelain billets.Kana iyo crystallinity yakanaka, mapurasitiki uye kukwanisa kusungirirana kwakaderera, kuomeswa kuderera kuduku, kutonhora kwe sintering kwakakwirira, uye kusvibiswa kwemukati kunoderedzwawo;Pane zvinopesana, mapurasitiki ayo akakwirira, kuomesa shrinkage yakakura, sintering tembiricha yakaderera, uye inoenderana netsvina yemukati zvakare yakakwirira.