High-purity silica sand must meet specific requirements: SiO₂ > 98 %, calibrated particle size distribution, and batch traceability. Whether for glassmaking, foundries, filtration or construction — each sector has its own criteria. Where can you find silica sand? Finding the right supplier makes all the difference to the final quality. This guide helps you identify the right sources, choose the appropriate particle size and obtain a personalised quote quickly.
What is silica sand used for?
Silica sand is widely used across a wide range of industrial sectors. Its hardness of 7 on the Mohs scale and its remarkable chemical inertness make it an irreplaceable raw material.
The main areas of application are as follows:
- Glassware and glazing : up to 70 % of the composition of flat glass, hollow glass and optical fibre (SiO₂ > 99 %)
- Foundry : manufacture of moulds for ferrous and non-ferrous metals up to 1,550 °C (SiO₂ > 98 %)
- Filtration : filter media for swimming pools and sewage treatment works (SiO₂ > 96 %, grain size 0.4/0.8 mm)
- Construction : mineral aggregate in concrete, mortar and façade render
- Paint and coatings : non-slip textured finish for industrial and outdoor surfaces
What type of sand should you choose for a swimming pool filter?
0.4/0.8 mm grain size: the standard for swimming pool filters
This particle size range retains suspended particles up to 30–40 microns, which is enough to remove algae, dust and common organic residues from a pond.
Its strength lies in the balance it offers: the grains, which are neither too fine nor too coarse, maintain a constant flow rate without causing the filter bed to become clogged prematurely.
With a SiO₂ content greater than 96 %, washed silica sand is resistant to chlorine and fluctuations in pH without deteriorating. As a result, it has a service life of between 3 and 5 years, depending on the intensity of use.
At Silices Santa Cruz, each batch is sieved and laboratory-tested to ensure a consistent, fine-grained distribution, which is essential for stable filtration season after season.
A 25 kg bag or a big bag: which packaging should you choose?
The choice depends primarily on the scale of your project and your logistical constraints. Two formats are available from Silices Santa Cruz: the 25 kg bag and the one-tonne big bag.
Here’s how to decide quickly:
- 25 kg bag : ideal for testing grain size, feeding a sandblasting gun or supplying a small building site. Easy to handle, with no special equipment required.
- 1,000 kg big bag : Suitable for medium-sized volumes and industrial sites. Less handling, optimised on-site storage.
Please note: switching from a big bag to a 25 kg bag may double or even triple the logistics cost per tonne. For large purchases, the big bag therefore remains the most economical option.
Price of silica sand for swimming pools
A 25 kg bag of filter sand costs around €10, making it the most cost-effective option on the market. For a standard family swimming pool filter requiring 50 to 75 kg, the cost of materials therefore remains very low.
The price varies depending on the packaging option chosen:
| Packaging | Guide price |
|---|---|
| 25 kg bag | ~10 € |
| 1,000 kg big bag | Discounted rates based on a quote |
| Bulk (industry) | €20 to €50 per tonne |
Sand with a specific gravity of more than 96 % of SiO₂, which has been washed and graded to 0.4/0.8 mm, commands a slightly higher price than raw sand — but its lifespan of 3 to 5 years more than makes up for this difference.
Where can you buy silica sand in France and Algeria?
In Algeria, the most direct solution lies in Santa Cruz Silica, a producer and miner based in El Aricha (Tlemcen). You buy directly from the Djebel Ouazzan deposit, with no middlemen. Exports to Europe are handled via the ports of Oran and Ghazaouet. Each consignment is accompanied by a laboratory analysis certificate.
For buyers in France, specialist suppliers of industrial materials offer silica sand in bulk or in bags. Always check the SiO₂ content and the particle size before placing an order — two factors that really determine the material’s performance for your specific application.
Wherever you are, request a personalised quote at silicesantacruz.com to receive a reply within 24 working hours, with pricing tailored to your volume.