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Fe2++2OH-+1/2O2+1/4O2Fe(OH)3

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λ

Ŀ

1500

N/P

F

88%

89

+ 6.25mm %

SiO2+ AL2O3

5.5%

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3.4

0.5 mm %

S

0.03%

ȱe

80

O/g

ףP

0.06%

ɢܶ

2.0-2.4

g/cm3

~Cu

0.002%

GBi

0.002

%

飨As

0.002%

UPb

0.002

%

aSn

0.002%

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