Mineral composition
Mineral name
Rectorite
Hydromica
Pyrophyllite
Kaolinite
Rutile
Content(%)
>85
<8
<2
<3
Chemical composition(wt%)
SiO2
Al2O3
Fe2O3
MgO
CaO
Na2O
K2O
TiO2
P2O5
MnO
H2O+
SO3
41.17
35.07
0.42
0.32
5.57
1.83
0.82
4.77
2.32
0.01
8.73
0.37
Properties
Cation exchange capacity(CEC) 46.36(mmol/100g)
Methylene blue absorption 63.75(mmol/100g)
D50 0.82µm
pH 6.0
d001 2.24nm
External surface area 56.58m2/g
Total surface area 390m2/g Average pore diameter 5.32nm
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