Kaolin, ibarwa kaolin, yogeje kaolin, metakaolin.
Imikoreshereze ya kaolin irimo:
Nkibikoresho nkenerwa bya minerval yinganda zinganda nyinshi, nko gukora impapuro, ububumbyi, reberi, inganda zikora imiti, gutwikira, ubuvuzi ndetse no kurinda igihugu, kaolin ifite plastike runaka, ituma umubiri wibyondo bya ceramic bifasha guhinduka, gutontoma no gukora.
Uruhare rwa kaolin muri ceramics ni ukumenyekanisha Al2O3, ifasha mu gukora mullite kandi ikanoza imiti ihamye hamwe nimbaraga zo gucumura.
Mugihe cyo gucumura, kaolin ibora mullite, ikora urwego nyamukuru rwimbaraga zumubiri wicyatsi, zishobora gukumira ihinduka ryibicuruzwa, kwagura ubushyuhe bwumuriro, no gutuma umubiri wicyatsi ugira umweru runaka.
Metakaolin (MK muri make) ni silikatike ya aluminiyumu (Al2O3 · 2SiO2, AS2 kuri make) ikorwa no kubura umwuma wa kaolin (Al2O3 · 2SiO2 · 2H2O, AS2H2 muri make) ku bushyuhe bukwiye (600 ~ 900 ℃).Kaolin ni iyubatswe rya silikatike, kandi ibice byahujwe na van der Waals, aho OH ion zifatanije.Iyo kaolin ishyushye mu kirere, imiterere yayo izahinduka inshuro nyinshi.Iyo ishyutswe kugeza kuri 600 ℃, imiterere ya kaolin izasenywa kubera umwuma, bigakora icyiciro cyinzibacyuho metakaolin hamwe na kristu mbi.Kuberako gahunda ya molekulari ya metakaolin idasanzwe, irerekana imiterere ya termodinamike kandi ifite gellabilite muburyo bushimishije.
Metakaolin ni ubwoko bwimyunyu ngugu ikora cyane.Ni silikate ya amorphous aluminium yakozwe na ultra-nziza kaolin ibarwa ku bushyuhe buke.Ifite ibikorwa byinshi bya pozzolanic, ikoreshwa cyane nkibintu bifatika, kandi irashobora no gukoreshwa mugukora polimeri ikora cyane.
Igihe cyo kohereza: Mutarama-05-2023