Specification

Undensified Silica Fume USF920

✣.   Very Small Particle Size.

✣.   Strong Absorbability.

✣.   High Pozzolanic Active index

✣.   High Compressive Strength.

 

USF 850
USF 940
USF 960

PRODUCT DETAILS

Applications

 

Test Item

 

Typical

 

SiO2 (%)

 

92.91

 

SO3 (%)

 

0.48

 

Cl (%)

 

0.022

 

MgO (%)

 

0.66

 

Al2O3 (%)

 

0.81

 

Fe2O3 (%)

 

0.72

 

K2O (%)

 

1.06

 

Na2O (%)

 

0.10

 

Free CaO (%)

 

  0.79

 

PH

 

7.09

 

Moisture (%)

 

0.30

 

LOI (%)

 

1.08

 

Specific Surface (BET) (m2/g)

 

21.33

 

Activity Index (%)

 

111 @ 7days

 

Retained on 45-μm (No.325) (%)

 

1.33

 

Fluidity (cm)

 

20.02

 

●   Improve compressive strength, bond strength, abrasion resisitance, reduce permeability in construction application.

●   Improve the fluidity of refractory casting materials, improve the compactness, temperature strength and thermal shock resistance. Reduce water consumption in refractory application.

●   As dispersant for chemical products, micro silica instead of mica or diatomite to prevent fertilizer particles caking. Making potassium silicon compound fertilizer, protect the soil from erosion or deterioration.

●   With strong adsorbability and large specific surface, as anti-caking agent or pellet binding agent improve economic performance.