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ROYAL STREET TRADING LLC
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Home > Products > Minerals > Silica Sand (all sizes)

PRODUCTS

Silica Sand Physical Properties

Desirable plasticity at the Time molding.
Desirable mold Permeability.
Being polished, the surface of produced shapes.
High sintering point and high level of not causticity.

Silica Sand Mechanical Properties

High dry compressive strength.
High tensile strength.
High mold hardness.
High yield strength
Few roughness on castings

Silica Sand Chemical Properties

High purity rate( 98% SiO2)
Void of volatile substances.
No chemical burning sand.

Coated Sand Benefits

Decreasing Gas defects
Decreasing pin holes
Hot shell tensile strength increasing
Thermal expansion decreasing
Great collapsibility
Mold atmosphere control

“What Is Silica?”

Silica, or silicon dioxide (SiO2), is a term used for a family of minerals that includes quartz, cristobalite, tridymite and tripoli. Silicon (Si) is the most abundant element in the Earth’s crust after oxygen. It is does not exist in its pure form in nature; instead, it occurs as silicon dioxide (SiO2) in all the minerals belonging to the silicate class. Silicate minerals constitute 97% of the Earth’s crust. They have a basic structure composed of silica tetrahedron (SiO4). The most common silica mineral in nature is quartz. Quartz has a hardness of 7 on the Mohs scale compared to a hardness of 10 for diamond. It is colorless in its pure state, or white to grey. Impurities impart hues of pink, purple, green or red. Commercially, the term silica is used to refer to deposits rich in quartz or other silicate minerals. Source: https://mern.gouv.qc.ca