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指標
|
yi級
|
二級
|
三級
|
F
|
≥52%
|
52.00%
|
51.00%
|
AI
|
12-13%
|
12-13%
|
12-13%
|
Na
|
>30%
|
≥27
|
25.00%
|
SiO2
|
0.36%
|
≤0.36
|
0.36%
|
Fe2O3
|
<0.08%
|
≤0.08
|
0.08%
|
SO4
|
<0.6
|
0.60%
|
0.60%
|
H2O
|
≤1%
|
1.00%
|
1.00%
|
P2O5
|
≤0.03%
|
0.03%
|
0.03%
|
CaO
|
≤0.4%
|
2.00%
|
4-5%
|
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