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"Haifa SILICA SAND – WINDOWS"
Float glass silica sand should have a high silica content, typically around 70-75%. Silica (SiO2) is the primary component of glass and provides its structural integrity.
Iron impurities can cause a greenish tint in the glass, which is undesirable for windows. Therefore, the silica sand used for float glass should have a low iron content, typically less than 150 parts per million (ppm) or even lower.
The particle size distribution of the silica sand is important for the formation of a uniform and smooth glass surface. Controlled particle sizes are necessary to ensure consistent glass quality and minimize surface defects.
Other impurities such as alumina, titania, and other metal oxides should be minimized to maintain the desired transparency, clarity, and optical properties of the glass.