silica sand making process line in philippines

The silica sand making process line in the Philippines involves several stages, from mining raw silica sand to processing it into high-purity industrial-grade sand. Below is a step-by-step breakdown of the typical silica sand production process:

1. Mining & Extraction

• Silica sand is usually mined via open-pit or dredging methods.
• In the Philippines, common sources include riverbeds, coastal areas, and inland deposits (e.g., Zambales, Surigao, and Cebu).
• Excavators or dredgers extract raw sand, which is then transported to processing plants.

2. Washing & Scrubbing

• The raw sand contains impurities like clay, silt, and organic matter.
• A log washer or attrition scrubber removes these contaminants using water and mechanical agitation.
• Screw classifiers or hydrocyclones separate finer particles.

3. Screening & Size Classification

• Vibrating screens separate silica sand into different grain sizes (e.g., coarse, medium, fine).
• Oversized particles may be crushed using a jaw crusher or cone crusher.



4. Gravity Separation (Optional)

• If heavy minerals (iron, titanium) are present, spiral separators or shaking tables remove them.
• Magnetic separation may also be used for iron removal.



5. Acid Leaching (High-Purity Sand)

• For premium-grade silica (used in glassmaking or electronics), acid leaching (hydrochloric/sulfuric acid) dissolves metallic impurities.
• Rinsing with deionized water follows to neutralize residual acids.

6. Drying & Dehydration

• Rotary dryers or fluidized bed dryers reduce moisture content (<0.5%).
• Hot air is blown through the sand to ensure uniform drying.

7. Final Screening & Packaging

• Final screening ensures consistent particle size distribution.
• The processed silica sand is packed in bulk bags (for industrial use) or small bags (for retail).

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Key Equipment Needed:

✔ Excavator/Dredger
✔ Log Washer/Attrition Scrubber
✔ Vibrating Screens/Hydrocyclones
✔ Spiral Separator/Magnetic Separator (if needed)
✔ Rotary Dryer/Fluidized Bed Dryer
✔ Crushers/Grinders (for oversize particles)

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Silica Sand Applications:

✅ Glass manufacturing (bottles, windows)
✅ Foundry casting molds
✅ Construction materials (cement, ceramics)
✅ Water filtration systems

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Would you like details on suppliers of silica sand processing equipment in the Philippines? Or are you looking for specific project guidance? Let me know how I can assist further!