Premium Expanded Vermiculite Factory Leading China Suppliers of Industrial Grade Vermiculite
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Vermiculite is a premium natural inorganic silicate mineral, characterized by its unique mica-like structure and exceptional thermal properties. Formed through the hydration of granite, this versatile mineral is available in various forms, including raw flakes and expanded vermiculite. Depending on the specific mineral composition, it is categorized into golden, silver, and milky white varieties, making it an essential material for high-performance industrial applications.
When subjected to high-temperature calcination, raw vermiculite undergoes a rapid expansion process, increasing its volume by 6 to 20 times. This results in a lightweight, layered structure with a specific gravity of 60-180kg/m³, offering superior electrical and thermal insulation. Capable of withstanding temperatures up to 1100°C, our expanded vermiculite is a critical component in metallurgy, construction, and specialized agricultural sectors worldwide.
Detailed Parameters
| SiO2 (%) | 40-50 | Al2O3 (%) | 20-30 |
|---|---|---|---|
| CaO (%) | 0-2 | MgO (%) | 1-5 |
| Fe2O3 (%) | 5-15 | Max Temperature | 1100°C |
| Specific Gravity | 60-180kg/m3 | Expansion Ratio | 6 to 20 times |
| Available Sizes | 0.5-1mm, 1-3mm, 2-4mm, 3-6mm, 4-8mm, 20-40mesh, 40-60mesh, 60-80mesh, 200mesh, 325mesh, or custom request. | ||
Key Advantages
High Heat Resistance
Capable of operating at temperatures up to 1100°C, providing exceptional stability in extreme thermal environments.
Superior Insulation
Excellent thermal and electrical insulation properties due to its unique expanded layered structure.
Ultra-Lightweight
Low specific gravity (60-180kg/m3) reduces structural load in construction and industrial installations.
Versatile Application
Wide utility across metallurgy, agriculture, shipbuilding, and chemical industries.
Chemical Stability
An inorganic mineral that remains stable under various chemical conditions, ideal for filtration and catalysts.
Customizable Grade
Available in multiple mesh sizes and colors (golden, silver, white) to meet precise technical specifications.
Product Gallery
Management Platforms
Packaging Options
Available in 1ton Jumbo Bags, 10kg or 25kg small bags within jumbo bags, or custom packaging.
Logistics Efficiency
Strategic shipping through Xingang Port and Qingdao Port for optimized global delivery times.
Quality Control
Rigorous testing of SiO2 and Al2O3 content to ensure metallurgical grade consistency.
Supply Chain Stability
Direct sourcing from primary producing regions including China, Russia, and the USA.
Order Customization
Tailored mesh size and granularity based on specific industrial application requirements.
Technical Support
Expert guidance on integration for refractory materials and agricultural soil conditioners.
Investment Return Comparison
| Feature Metric | Standard Fillers | Premium Vermiculite |
|---|---|---|
| Thermal Resistance | Moderate | Ultra-High (1100°C) |
| Weight Efficiency | High Density | Ultra-Low Density |
| Insulation Power | Basic | Advanced Layered Insulation |
| Application Range | Limited | Multi-Industry (Metallurgy to Ag) |
| Long-term Stability | Average | High Chemical Inertness |
Frequently Asked Questions
Q: What is the main difference between raw and expanded vermiculite?
Raw vermiculite is the natural mineral flake. Expanded vermiculite is produced through high-temperature calcination, causing the material to expand 6-20 times in volume, creating a lightweight, porous structure ideal for insulation.
Q: How is vermiculite used in the metallurgy industry?
In metallurgy, it is primarily used as a steel frame coating material, a metallurgical slag removal agent, and as a core component in high-temperature refractory materials.
Q: Can expanded vermiculite be used for agricultural purposes?
Yes, it is widely used in horticulture, golf course lawns, and as a soil conditioner due to its ability to retain moisture and aeration, promoting better plant growth.
Q: What are the common size specifications available for vermiculite?
We provide a wide range of sizes from 0.5-1mm up to 4-8mm, as well as various mesh sizes (20-40, 40-60, 60-80, 200, 325 mesh) to suit different industrial needs.
Q: Is expanded vermiculite fireproof?
Yes, it is highly fire-resistant with a maximum usage temperature of 1100°C, making it ideal for fireproof boards, mortars, and bricks in the construction industry.
Q: What are the shipping options available for bulk orders?
We offer efficient delivery from Xingang Port or Qingdao Port, China, with packaging options ranging from 10kg small bags to 1ton Jumbo Bags for bulk shipments.