Efficiency of ball milled South African bentonite clay for ...
2015-12-1 · The raw bentonite clay is mainly composed of Al and Si hence the name alumino–silicate. The relatively high concentration of Fe 2 O 3, MgO, CaO, Na 2 O and K 2 O are an indication that these are the main exchangeable cations in the bentonite clay matrices. This correlates with the CEC results for (Mg, Ca, Na and K) ().Insignificant levels of P, Cr and S