Product Overview
Micro Silica (also known as Silica Fume) is an ultrafine powder by-product of silicon and ferrosilicon alloy production. It is composed of amorphous silicon dioxide (SiO₂) and is widely used as a high-performance additive in concrete, refractory materials, and other industrial applications. Micro Silica improves the mechanical strength, durability, and chemical resistance of concrete while reducing permeability and enhancing long-term performance.
Key Characteristics
- Extremely fine particle size (<1μm)
- High silicon dioxide (SiO₂) content (>85%)
- Poisson effect: fills micro voids in concrete
- Improves mechanical and durability properties
- Chemically stable and amorphous
Industrial Applications
1. High-Performance Concrete (HPC)Used as a pozzolanic material to enhance compressive and tensile strength, reduce permeability, and increase durability.
2. Refractory & CeramicsEnhances thermal stability, mechanical strength, and chemical resistance of refractory materials and ceramics.
3. Oil Well CementingImproves slurry properties, reduces permeability, and increases strength in oil and gas well cementing applications.
4. Coatings & SealantsUsed in protective coatings, fireproofing, and chemical-resistant sealants for industrial structures.
5. Other Industrial ApplicationsApplicable in polymer composites, silica-based fillers, and specialty construction materials.
Available Grades
- Standard Micro Silica (>85% SiO₂)
- Ultra-High Purity Micro Silica (>95% SiO₂)
- Fume-based grades tailored for concrete, refractory, and industrial uses
Packaging & Supply
- 25 kg bags
- 1 MT jumbo bags
- Bulk supply
- Custom packaging available
- Consistent quality meeting international standards