Activated bleaching earth
Metallurgy bentonite
Micaceous iron oxide
 
Ball group's soil quality index parameter£º
Project
Rank
One grade
Second grad
the content of Covered taken off stone
>60
60¡«45
Two hour absorbing water amount
>120
120¡«100
hold of expand
>12
12¡«8
passing 200 mesh(%)
>95
>95
free moisture
<10
<10
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