Silica Fume for Concrete/Refractory

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$100.00 - $300.00 / Metric Ton | 20 Metric Ton/Metric Tons (Min. Order)
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Overview
Quick Details
Place of Origin:
Shanghai, China
Brand Name:
Topken
Model Number:
Topken-9N
Type:
Silica Powder
Application:
Refractory
Grade:
Silica Oxide Micro Fine -400
SiO2 Content (%):
85%-98%
Fe2O3 Content (%):
Max.0.78%
Al2O3 Content (%):
Max.0.29%
MgO Content (%):
Max.0.5%
CaO Content (%):
Max.0.39%
P2O5 Content (%):
Max.0.5%
Purity:
5n
Color:
Grey&White
Size:
325Mesh
Pozzolana Activity Index:
110% Min.
Brand:
TOPKEN (oversea registrated brand)
Fluidity:
MIN.100MM
Standard:
ASTM C-1240
Cas No.:
69012-64-2
Supply Ability
Supply Ability:
5000 Metric Ton/Metric Tons per Month
Packaging & Delivery
Packaging Details
In jumbo bags of 900kg/bag or 20KG/BAG, 300KG/BAG.
Port
Shanghai,Tianjin

Specifications

 
micro silica
1) high quality silica sand 
2) factory price 
3) fast delivery, prompt reply 
4) stable supply 
 
Silica Fume for Concrete/Refractory
1.Instruction

Silica fume, also called microsilica, is a byproduct of producing silicon metal or ferrosilicon alloys. Silicon metal and alloys are produced in electric furnaces. The raw materials are quartz, coal, and woodchips. The smoke that results from furnace operation is collected and sold as silica fume, rather than being land filled. Microsilica consists primarily of amorphous (non-crystalline) silicon dioxide (SiO2), its average granule diameter is 0.15~0.20 µm,specific surface area is 15000~20000 m2/kg, and it has extremely strong surface active.

 

2.Main function

  • Very low permeability to chloride and water intrusion.
  • Extremely high electrical resistivity (20 to 100 times greater than ordinary concrete).
  • Increased abrasion resistance on decks, floors, highways and marine structures.
  • Superior resistance to chemical attack from chlorides, acids, nitrates and sulfates.

 

3.Specification

Grey Densified and undensified Silica fume

Specification:

Analysis Result

Analysis

Result

SF85

SF88

SF90

SF92

SF94

SF96

SF97

SF98

SiO2(%)(min.)

85.05

88.05

90.05

92.05

94.05

96.05

97.5

98.5

Fe2O3 (%)

0.78

0.44

0.21

0.25

0.20

0.20

0.10

0.20

Al2O3 (%)

0.29

0.20

0.21

0.25

0.20

0.20

0.20

0.20

CaO (%)

0.39

0.30

0.36

0.30

0.30

0.30

0.30

0.30

K2O+ Na2O (%)

0.29

0.24

0.22

0.20

0.20

0.20

0.20

0.20

Moisture (%)

3.05

2.55

2.05

2.05

1.85

1.25

1.00

1.00

Loss on Ignition (L.O.I) @975OC (%)

4.38

3.38

2.38

2.38

2.28

1.88

1.55

1.50