China Best Selling Famous Brand Winitoor Light Grey Fine Powder Micro Silica Fume for Refractory Materials

FOB Reference Price:Get Latest Price
$150.00 - $225.00 / Metric Ton | 20 Metric Ton/Metric Tons (Min. Order)
Lead Time:
Quantity(Metric Tons) 1 - 60 61 - 100 >100
Est. Time(days) 20 25 Negotiable
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Overview
Quick Details
Place of Origin:
Fujian, China
Brand Name:
WINITOOR
Model Number:
SF95
Type:
Silica Powder
Application:
Refractory
Grade:
Silica Oxide Micro Fine -400
SiO2 Content (%):
95.5%
Fe2O3 Content (%):
0.47%
Al2O3 Content (%):
0.42%
MgO Content (%):
0.55%
CaO Content (%):
0.51%
P2O5 Content (%):
0.0002%
Purity:
5N
Brand:
Winitoor
Colour:
Light grey
Usage:
Refractory & Oil drilling well
Density:
280-400
Shape:
Power
Packing:
500kg/bag
Supply Ability
Supply Ability:
50000 Metric Ton/Metric Tons per Year
Packaging & Delivery
Packaging Details
500kgs/jumbo bag with UV& waterproof and wooden pallet or as customers request
Port
Xiamen Port or as request
Lead Time :
Quantity(Metric Tons) 1 - 60 61 - 100 >100
Est. Time(days) 20 25 To be negotiated

 

USF95 # CHEMICAL ANALYSIS
  PARAMETER STANDARD Result ASTM C 1240-05
1 SiO2 (%) 95%min 95.56% 95%min
2 Fe2O3(%) 2%max 0.04% 3%max
3 Al2O3(%) 2%max 0.29% 6%max
4 CaO(%) 2%max 0.15% ------
5 Na2O 2%max 0.23% ------
6 Mositure(%) 2%max 0.50% ------
7 LOI(%) 3.%max 1.68% ------
SGS certificate with ASTM-C1240 Standard # PHYSICAL PARAMETERS
  PARAMETER STANDARD Result ASTM C 1240-05
1 ParticleSize +/-0.045mm      99%min 99.67% ------
2 Oversize variation % point from average (%) 2.01% 5%max
3 Pozzolanic Activity Index (7 days) ≥110% 120.00% 105%min
4 Surface Area 15000-27000m2/kg 22.63 15000m2/kgmin
5 Bulk Density(Undensified) 280-400kg/m3 350kg/m3 350kg/m3
                       
Brief Introduction Microsilica fume (scientific name "silica fume," Microsilica or Silica Fume), in the smelting of ferrosilicon and industrial silicon, silicon through the flue gas emitted by steam oxidation, the specially designed filter collected the amorphous powder like silica (SiO 2). Micro-silica fume average 0.1-0.15 μ m in diameter, the size of several cement average 1.0%. Surface area for the 15-27 m 2 / g, with strong surface activity.
Features Characteristics 1).Appearance is as grey&white off.
2).High electrical resistivity
3).Low Permeability
4).Superior resistance to chemical attack from chlorides,acids and sulfates
5).Low chloride ion diffusion
6).High reactive Pozzolan
7).High temperature strength
8).Improved stability ingeothermal environment

 

 

Product properties

Properties of Silica Fume

CAS No.

69012-64-2

Particle shape

Powder

Color

Dark grey / Light grey

Amorphous

This term simply means that silica fume is not a crystalline material. A crystalline material will not dissolve in concrete, which must occur before the material can react. 

Silicon dioxide (SiO2)

85% to 97 %

 

This is the reactive material in silica fume. Because of its very high amorphous silicon dioxide content, silica fume is a very reactive pozzolanic material in concrete. As the portland cement in concrete begins to react chemically, it releases calcium hydroxide. The silica fume reacts with this calcium hydroxide to form additional binder material called calcium silicate hydrate. It is largely this additional binder that gives silica-fume concrete its improved hardened properties.

Bulk density

280-400 kg/m3 (Undensified) / 550-700 kg/m3 (Densified)

 

The bulk density of the as-produced fume depends upon the metal being made in the furnace and upon how the furnace is operated. Because the bulk density of the as-produced silica fume is usually very low, it is not very economical to transport it for long distances.

Specific surface area:

15000-27000m2/kg

 

Specific surface is the total surface area of a given mass of a material. Because the particles of silica fume are very small, the surface area is very large. We know that water demand increases for sand as the particles become smaller; the same happens for silica fume. 

Particle size

 < 1 µm

 

Silica fume particles are extremely small, with more than 95% of the particles being less than 1 µm . Particle size is extremely important for both the physical and chemical contributions of silica fume in concrete.

Specific gravity

2.2

 

Specific gravity is a relative number that tells how silica fume compares to water, which has a specific gravity of 1.00.  Silica fume has a specific gravity of about 2.2, which is somewhat lighter than portland cement, which has a specific gravity of 3.15. Thus, adding silica fume to a concrete mixture will not “densify” the concrete in terms of increasing the density of the concrete.

Contact Us

MS.Jessie

Mobile:+86-15859293570

Tel: +86-595-22288318

Fax:+86-595-22288319

Email:sales7 at winitoor.com

Website: www.winitoor.com    

   

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