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把天然钙基膨润土(简称钙土)经人工改型成钠基膨润土(简称钠土)的机理,人们早已掌握。它的反应式是:[(Al·Mg·Fe)_4(Si·Al·Fe)_8O_(20)(OH)_4]·Ca~(++)+Na_2CO_3+H_2O(?)[Al·Mg·Fe)_4(Si·Al·Fe)_8O_(20)(OH)_4]·2Na~++CaCO_3+H_2O。但是,实验室条件下改型
The natural calcium bentonite (referred to as calcium) by artificial modification into sodium bentonite (referred to as sodium) mechanism, people have mastered. The reaction equation is: (Al · Mg · Fe) _4 (Si · Al · Fe) _8O_ (20) (OH) _4] · Ca ~ (++) + Na_2CO_3 + H_2O Fe) _4 (Si · Al · Fe) _8O_ (20) (OH) _4] · 2Na ~ ++ CaCO_3 + H_2O. However, laboratory conditions are modified