Filter Gravel

Filter Gravel

• Tuna Silica Sand
• January 01, 2019

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What is Filter Gravel?

Filter gravel consists of natural quartz particles ranging from 1 mm to 32 mm, formed as a result of the decomposition of quartz-rich igneous and metamorphic rocks. Since filter gravel and sand have a very high resistance to abrasion and mechanical damage, they are used in water filtration.

Properties of Filter Gravel

Silica gravels and sands are white in color; however, if they contain iron oxide, their color varies from pink to red or brown. Quartz sand, which is composed of silica gravel (SiO2), contains small amounts of clay, feldspar, iron oxides, and carbonates.

Despite the dominance of silica sand and gravel (quartz filter gravel) in the earth's crust, consumer organizations look for certain physical and chemical properties in the product. Therefore, we produce the most efficient filter gravels for our customers.

Filter gravel is produced in desired colors and sizes at our facilities after the washing and screening processes of natural quartz sand and silica sands, in full compliance with TS EN 12904 and CE standards.

The main usage areas of silica sand and gravel are the glass and foundry industries. They are also used in the construction industry, abrasive production, metallurgy, detergent, paint, plastic, rubber, ceramic industries, and petroleum production. Although the world silica sand and gravel (quartz sand) reserves cannot be calculated precisely, they are known to be at the level of billions of tons.

In accordance with European Union regulations, 45% of the produced sand is used in the glass industry, 35% in the foundry industry, and the remaining part is utilized in electrometallurgy, the construction industry, paint, and plastic production. In order to produce silica sand and gravel (quartz sand and gravel) economically, the ratio of the thickness of the overburden layer to be removed over the sand to the sand thickness should be at a maximum level of 4 m³ / ton.

Production:

Depending on the demands of our customers, quartz sand and gravel extracted from the quarries are subjected to screening, scrubbing, washing, desliming, flotation or magnetic separation, classification, and drying processes in mineral processing plants. Thus, we produce high-quality quartz sand and gravel with high silica (SiO2) content, low oxides, and a low amount of heavy minerals. Silica sand and gravel (quartz sand and gravel) standards vary according to the industrial sector in which they are used and their natural occurrence quality.

Chemical Compound:

Silicon dioxide or silica is a chemical compound containing oxygen and silicon. Its chemical symbol is SiO₂. It has been known since the 16th century. It is used in many materials such as glass, concrete, tiles, and porcelain. It consists of 2 oxygen atoms and 1 silicon atom.