ifu y'ibumba ya bentonite ni minerval idafite ubutare hamwe na montmorillonite nkibigize imyunyu ngugu. Imiterere ya montmorillonite ni ubwoko bwa 2: 1 bwa kirisiti igizwe na tetrahedrons ebyiri ya silicon-ogisijeni hamwe na octahedrons ya aluminium-ogisijeni. Hano hari cations zimwe murwego rwubatswe, nka Cu, Mg, Na, K, nibindi, kandi imikoranire yiyi cations na selile ya montmorillonite ntigihungabana cyane, kandi biroroshye guhanahana nizindi cations, bityo rero ifite ion nziza. Ibihugu by’amahanga byakoreshejwe mu mashami arenga 100 mu bice 24 by’inganda n’ubuhinzi, kandi hari ibicuruzwa birenga 300, bityo abantu bakabyita "ubutaka rusange."
1. Kwongeramo ifu ya bentonite y ibumba mubikorwa byubutaka byongera plastike nimbaraga zumubiri wa urusoro cyangwa glaze, byongera cyane amavuta yo gusiga, kandi bigira akamaro mugusya umupira. Mubyongeyeho, guhagarikwa no gutuza byongerewe cyane, farisari iroroshye, ijwi ryamabara ryoroshye, hamwe na glaze Imashini iroroshye, hamwe nogukwirakwiza urumuri rwiza, kurwanya kugongana, kandi ifite urwego runaka rwimbaraga za mashini.
2. Mu bwubatsi no gucukura, ifu y ibumba ya bentonite ifite ihagarikwa ryiza, thixotropy, gutakaza akayunguruzo gake, imikorere myiza yo gukora amashanyarazi, gutegura neza, guhindura byoroshye uburemere bwihariye bwamazi yo gucukura, nibindi. Ni umusingi wingenzi wingenzi kuri iriba ryimbitse hamwe ninyanja yo gucukura ibikoresho byubwubatsi.