Kaolin, calcined kaolin, yakashambwa kaolin, metakaolin.

Kushandiswa kwekaolin kunosanganisira:
Sechinodiwa chicherwa chemidziyo yemaindasitiri mazhinji, akadai sekugadzira mapepa, ceramics, rabha, indasitiri yemakemikari, kupfekedza, mushonga uye kudzivirira kwenyika, kaolin ine imwe purasitiki, iyo inoita kuti muviri wedhaka rekeramic ugone kutendeuka, grouting uye kuumba.

Basa re kaolin mumakeramiki nderekuunza Al2O3, iyo inobatsira pakuumbwa kwemullite uye inovandudza kugadzikana kwayo kwemakemikari uye sintering simba.

Munguva yekupisa, kaolin inoora kuita mullite, ichigadzira chimiro chikuru chesimba rakasvibirira remuviri, iro rinogona kudzivirira deformation yezvigadzirwa, kuwedzera tembiricha yekupisa, uye kuita kuti muviri wakasvibira uve nehumwe kuchena.

Metakaolin (MK kwenguva pfupi) inonzi anhydrous aluminium silicate (Al2O3 · 2SiO2, AS2 kwenguva pfupi) inoumbwa nekushaya mvura kwekaolin (Al2O3 · 2SiO2 · 2H2O, AS2H2 kwenguva pfupi) pane imwe tembiricha yakakodzera (600 ~ 900 ℃).Kaolin ndeye layered silicate structure, uye ma layer anosungwa ne van der Waals bond, umo maOH ions anosungwa zvakasimba.Kana kaolin ichipisa mumhepo, chimiro chayo chinoshanduka kakawanda.Kana yadziiswa kusvika pa600 ℃, iyo yakaturikidzana chimiro che kaolin inoparadzwa nekuda kwekushaya mvura, ichigadzira shanduko yechikamu metakaolin ine crystallinity isina kunaka.Nekuti iyo molecular marongero emetakaolin haina kurongeka, inopa iyo thermodynamic metastable mamiriro uye ine gellability pasi pekunakidzwa kwakakodzera.

Metakaolin imhando yeinonyanya kushanda yemaminerari musanganiswa.Iyo amorphous aruminiyamu silicate inoumbwa ne Ultra-yakanaka kaolin yakarukwa pane yakaderera tembiricha.Iyo ine yakakwira pozzolanic chiitiko, inonyanya kushandiswa sekongiri musanganiswa, uye inogona zvakare kushandiswa kugadzira yakakwirira-inoshanda geological polymers.