Silica sand or quartz gravel 4-8 mesh refers to sand with grains that have a size between 4 mesh and 8 mesh. This mesh size means that each linear inch of the screen has 4 to 8 holes, with the grains of sand being quite large and coarser than the higher mesh sizes.
Silica gravel 4-8 mesh is generally used for applications that require a larger particle size. Some common uses of silica gravel 4-8 mesh are:
1. Screening and Filtration
Water filtration systems: This size of silica sand is often used in water filtration systems, especially for wastewater or swimming pool water filtration. The larger grains allow for faster water flow, while capturing dirt and large particles.
2. Planting Media (Hydroponics and Plants)
Silica gravel 4-8 mesh can be used in hydroponic systems or as a planting medium in growing plants. This size provides space for better air circulation and prevents soil compaction.
3. Making Concrete and Mortar
In construction, this size of silica sand is often used for concrete or mortar mixes, providing additional strength to the structure due to its larger particle size. This sand is also used in making reinforced concrete.
4. Sandblasting Process
This larger size of silica gravel is often used in the sandblasting process to clean metal or other material surfaces. The larger grain size provides stronger abrasiveness to remove rust or old paint.
5. Making Bricks and Ceramics
This sand is also used in the making of bricks or ceramics for material mixes, providing the necessary structural strength.
6. Providing Filter Media for Aquariums
4-8 mesh silica gravel can also be used in aquarium filters as a mechanical and biological filter media, providing a place for beneficial bacteria that help in the filtration process.
Because of its larger size, 4-8 mesh silica gravel is more often used for applications that require better circulation or flow, as well as the ability to filter or clean surfaces more effectively.