Caldas da Rainha Extraction and Processing Unit
LOW IRON FELDSPATHIC SANDS
Dedicated to the extraction and processing of silica sands, providing essential raw materials for various industrial sectors, with special emphasis on civil construction and the glass industry.
Caldas da Rainha: Located in the municipality of Caldas da Rainha, in the West region, this unit complements production capacity for industrial sand, reinforcing the supply of essential raw materials for various applications.
The unit is situated in a privileged area in terms of road access, allowing national distribution to clients.
Our product
Lusosílica’s main clients operate in business areas such as glass, ceramics, cement and tile adhesive, civil construction, foundry, asphalt, the rubber industry, industrial chemicals, paints, agriculture, swimming pool filters, golf courses, the engineered marble industry and gas filters.
| NATURE | SILICEOUS SAND |
| COMMERCIAL NAME | CS 40 |
PARTICLE SIZE ANALYSIS 1 | |
| SIEVES (mm) | HELD (%) |
| 1 | 1 |
| 0,5 | 57 |
| 0,25 | 41 |
| 0,125 | 1 |
| 0,063 | 0 |
| < 0,063 | 0 |
| 1 DIN ISO-3310 | |
CHEMICAL CHARACTERISTICS2 (%) | |
| SiO2 | 95 |
| AlO2O3 | 3,5 |
| Fe2O3 | 0,1 |
| CaO | 0,1 |
| MgO | 0,1 |
| Na2O | 0,1 |
| K2O | 1,1 |
| TiO2 | 0,02 |
| P2O5 | 0,01 |
| 2 X.R.F. | 0 |
| HUMIDITY | ≤ 5 % |
Commitment to Quality
The Caldas da Rainha unit is certified by CERTIF in accordance with the ISO 9001 standard, ensuring the implementation of a quality management system focused on continuous improvement and the satisfaction of our customers.













