Silica is the name given to a group of minerals composed of silicon and oxygen, the two most abundant elements in the earth's crust. Silica is found commonly in the crystalline state and rarely in an amorphous state. It is composed of one atom of silicon and two atoms of oxygen resulting in the chemical formula SiO2.
Sand consists of small grains or particles of mineral and rock fragments. Although these grains may be of any mineral composition, the dominant component of sand is the mineral quartz, which is composed of silica (silicon dioxide). Other components may include aluminum, feldspar and iron-bearing minerals. Sand with particularly high silica levels that is used for purposes other than construction is referred to as silica sand or industrial sand.
Silica sand in Egypt
There are two main locations in Egypt having high quality of silica sand, the first location lies at Zaafranaarea – Red Sea and the second one locates at north and south Sinai. The reserves at the mentioned areas are over thousands million ton of high quality silica sand, which used in the glass industries, paints, foundries, chemicals and ceramics.
1- FILTER SAND.
2- FRAC SAND.
3- GLASS SAND.
4- SPORT SAND.
5- FOUNDRY SAND
1- Filtration media for a domestic and commercial pool filter.
2- Wet sandblasting.
3- Epoxy flooring.
4- Water treatment plants.
5- Render scratch coats.
6- Bulking out self-leveling compounds.
7- Decorative applications.
Hydraulic fracturing process that generating fractures in the rock, where some subsurface rock units such as organic shale contain large amounts of oil, natural gas or natural gas liquids that will not flow freely to a well. They will not flow to a well because the rock unit either lacks permeability (interconnected pore spaces) or the pore spaces in the rock are so small that these fluids cannot flow through them. Frac sand is known as a "proppant" because it props the fractures open.
PHYSICAL PROPERTIES :
- Crush resistance (compressive stresses of 4,000 to 6,000 psi)
- Solubility : insoluble
- Sphericity& roundness Spherical shape 0.6 or larger.
- Purity: high-purity quartz sand (AT LEAST 99% SiO2).
3- GLASS SAND.
1- Optical & ophthalmic.
2- Tableware & lead crystal glass.
3- Borosilicate glass.
4- Colorless container.
5- Clear flat glass.
6- Colored container glass.
7- Optical fiber.
1- Artificial pitches.
2- Root zones turf.
3- Manage drainage for play grounds.
4- Mix Sands.
- Bulk density : 1.5 - 2.5 g/cc
- Particles shape: angular to surrounded.
- Total porosity : 35 – 55%
5- FOUNDRY SAND
Foundry sand used to form molds for ferrous (iron and steel) and nonferrous (copper, aluminum, brass) metal castings. Where 95 percent of foundry sand used for castings. The automotive industry and its parts suppliers are the major generators of foundry sand.
• physical properties
• chemical composition
• mechanical properties
• Particles size
EGYPT STONE CO. FOR MINING &SUPPLIES PROVIDING ALL TYPES OF SILICA SAND WITH HIGH QUALITY