Water Filtration Industry
Specifications and Applications of Quartz in the Water Filtration Quartz (Silica) Granules
Quartz granules are utilized in water filtration as per BIS specification (IS: 8419 – 1977). The particle size must correspond to 10% finer on the grain size curve. The uniformity coefficient, defined as the ratio D60/D10, is determined where D60 represents the particle diameter at 60% finer on the grain size curve, and D10 represents the diameter at 10% finer.
Our Specifications :
- Quartz with a high SiO₂ content ranging from 99.5% to 99.9% is ideal for water filtration.
- Available sizes include :
- 0.3-0.6 mm, 0.6-1.2 mm, and 1.2-2.5 mm
- Corresponding mesh sizes: 8-16, 16-32, and 26-40
- The material features low iron content, up to 0.04%.
- Natural silica sand for water filtration is also offered in sizes ranging from 0.6-2.5 mm and larger.
Specifications of Quartz suitable for Applications in the Water Filtration :
Filter Sand: Rounded grains are preferred over angular ones for effective turbidity removal. It should consist of hard, durable silica sand grains with a specific gravity of at least 2.5. The SiO₂ content must be a minimum of 95%, and impurities such as clay, silt, etc., should not exceed 2% by volume.
Filter Granules: These should be composed of hard, preferably rounded stones with an average specific gravity of at least 2.5. They must be free from clay, sand, loam, and organic impurities. The mass of thin, flat, or elongated pieces, determined by hand picking, should not exceed 2%. For gravel sizes 10mm or larger, the acid solubility should not exceed 10%, while for smaller sizes, it should be below 5%. Gravel should also be free from excessive limestone content.
Specifications of Quartz in Granule forms :
- SiO₂ content should be greater than 98%.
- Fe₂O₃ should be approximately 0.04% or lower.
- Other trace elements must be below 1.0%.
- It should be free from contaminants such as clay, sand, and other trace elements.
