How is quartz sand different from silica?

Quartz sand is a kind of quartz particle formed by crushing quartz stone. Quartz stone is a kind of non-metallic mineral, which is hard, wear-resistant, and chemically stable silicate mineral. Its main mineral composition is SiO2. The color of quartz sand is milky white, or colorless and translucent, with Mohs hardness of 7. Quartz sand is an important industrial mineral raw material, and is not a chemical hazardous material. It is widely used in glass, casting, ceramics and refractories Smelting ferrosilicon, metallurgical flux, metallurgy, construction, chemical, plastic, rubber, abrasive, filter material and other industries.
Silica sand, also known as silica or quartz sand. It is mainly composed of quartz and its particle size is
The refractory particles of 0.020mm-3.350mm are divided into artificial silica sand, water washed sand, scrubbed sand, selected (flotation) sand and other natural silica sand according to different mining and processing methods. Silica sand is a hard, wear-resistant and chemically stable silicate mineral whose main mineral composition is SiO2
The color of silica sand is milky white or colorless and translucent.
Both quartz sand and silica sand are mainly composed of silica. They are distinguished according to the content of silica. Those with more than 98.5% of silica are called quartz sand, and those with less than 98.5% of silica are called silica sand.
The hardness of quartz sand is high, about 7, and the hardness of silica sand is 0.5 grade lower than that of quartz sand. The color of quartz sand is crystal clear. The color of silica sand is pure white, but not shiny. There is no feeling of crystal clear.

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