The compound includes 72.5% to 77.5% by weight of {HEAD ~ a first mixture} of substantially 18.3% Al2 O3, 29.5% Al2 SiO3 and {TAIL ~ 41.4% Na2 SiO3 particles} on a weight basis 
of
The compound includes 72.5 % to 77.5 % by weight of { HEAD ~ a first mixture } of substantially 18.3 % Al2 O3 , 29.5 % Al2 SiO3 and { TAIL ~ 41.4 % Na2 SiO3 particles } on a weight basis
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH