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27/11/2025 admin
Rhyolite is a silica-rich volcanic rock widely used in construction materials and ceramics.
Processing involves crushing → grinding → classification to achieve different applications.
Rhyolite is a type of volcanic igneous rock that forms from high-silica (acidic) lava. It is chemically similar to granite, but because it cools quickly on or near the Earth’s surface, its texture is typically fine-grained, sometimes containing glassy or porphyritic features (large crystals embedded in a fine matrix).
| Property | Description |
|---|---|
| Composition | Rich in silica (≈ 70%+ SiO₂), includes quartz, feldspar |
| Color | Light (gray, pink, cream, pale green) |
| Formation | Rapid cooling of high-viscosity lava, often explosive eruptions |
| Hardness | Mohs ~6–7 — relatively hard |
| Density | Low to medium |
| Texture | Fine-grained, glassy, or with visible phenocrysts |
| Application | Rationale |
|---|---|
| Construction aggregates | Good strength and durability |
| Cement & concrete fillers | Silica content improves performance |
| Glass & ceramics | High silica composition |
| Decorative stone | Attractive colors and textures |
| Mineral sources | May contain gold, silver, copper (host rock for ore deposits) |
If processing into construction or industrial powder:
Jaw Crusher → Coarse crushing
Cone Crusher / Impact Crusher → Secondary crushing
Output size: around 0–30 mm
Depending on required fineness:
| Equipment | Powder Size | Application |
|---|---|---|
| Ball Mill / Raymond Mill | 80–325 mesh | Cement additives, fillers |
| Vertical Roller Mill | 200–600 mesh | High-grade building materials |
| HGM Ultrafine Grinding Mill | 600–3000 mesh | Functional powders, ceramics, coatings |
Air classifier to separate required fineness grades
Pulse dust collectors, desulfurization if needed
Bagging for powder or slurry tanks for ceramics/glass plants.
Depending on required fineness.
The HGM Ultrafine Grinding Mill is suitable for rhyolite due to:
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