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Refractory
Silicon Carbide
Silicon Metal
White Fused Alumina
Brown Fused Alumina
Fused Silica
Fused spinel
Boron carbide
Abrasive
Black Silicon Carbide
Green Silicon Carbide
White Fused Alumina
Brown Fused Alumina
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Silicon Metal

Performance:
Silicon metal, also called industrial silicon or crystal silicon, is dark grey, with high melting point, good heat resistance, and high resistivity and anti-oxidation.
 
Function:
Industrial silicon produced by carbonaceous reducing agent and silica in an ore-smelting furnace is mainly used for preparing alloy, especially for aluminum alloy, polysilicon, organosilicon, and high-grade refractories.
 
Technical Index:
Specification
Chemical composition (%)
Impurity not more than °‹
Fe
Al
Ca
2202
0.2
0.2
0.02
3033
0.3
0.3
0.03
411
0.4
0.1
0.1
421
0.4
0.2
0.1
441
0.4
0.4
0.1
553
0.5
0.5
0.3
 
Silica Fume Introduction
Silica fume, also called coagulation siliceous dust, has main chemical composition of SiO2, accounting for 85-95%.
 
Performance
1. Fineness: Its particle is very fine, with average particle size of 0.1-0.15¶Őm.
2. Refractoriness: When SiO2 is more than 90%, its melting point can reach 1,630°ś.
3. Particle shape: Silica fume has inconstant ball shape and smooth surface, and can lubricate and reduce friction among particles.
4. Ore phase structure: With very rapid condensation process, the fine ore powder is an additive poured by cement, concrete additive and low cement.
 
Application
Comprehensive Utilization of Silica Fume:
1. Used as cement burdening in the construction industry to improve cohesion speed, corrosion resistance, insulation and wear resistance of mixture.
2. Used for mortar and concrete to fill the gap between particles, reduce the content of Ca(OH)2, and make mortar and concrete compact and uniform.
3. Used as basic material of silicic acid synthesis for precision ceramic and high-performance powder metallurgy and important filling material of organic compound in the chemical industry.
4. Used for pesticide and soil improving variety.
 
Technical Index
Chemical composition
Item
Index
SiO2
°‹
93.0
90.0
88.0
Al2O3
°›
1.0
1.5
-
Fe2O3
°‹
1.0
2.0
-
Physical index
4.5 screen residue°›4.5pm%
°‹
5.0
5.0
5.0
Specific surface area (m2/g)
°‹
20.0
18.0
15.0
PH
°‹
7.0
7.0
7.0
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