SILICA FUME FOR REFRACTORY


Suntek Refractory Grade Silica Fume is supplied from strictly selected Silicon metal furnaces and processed by specific densify process under strict quality control process to ensure its excellent effect for refractory applications.


Character:


  • Good fluidity, improving the flow properties of refractory castables.
  • Small particle size and fine distribution, developing dense castables with low porosity.
  • Strong activity to design mullite matrix in the castables, improving strength at intermediate temperatures during heat-up and improve strength at high temperatures.


Chemical Composition:


Item

Unit

SUNTEK SF 94U

 

 

Guaranteed 

Typical 

SiO2

%

94 min

96

C

%

1.5 max

0.8

Fe2O3

%

0.8 max

0.5

Al2O3

%

0.8 max

0.5

CaO

%

0.8 max

0.5

MgO

%

0.8 max

0.5

Na2O+K2O

%

1.3 max

1.1

P2O5

%

0.1 max

0.08

Cl

%

0.1 max

0.03

H2O

%

1.5 max

0.8

L.O.I

%

3

2


Physical properties:


Residue (+45um) 3% max (typically 1.5)

PH 5 - 7 (typically 6.5)

Bulk density 250-450 kg/m3 (typically 350 kg/m3)


Packaging:


In 500kg bulk bags, 20 or 25kg plastic woven sacks, or according to customer’s specific request.

If you have any question, please contact us