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　It is called Silica that contains silicon dioxide below 98.5%.The silica that has been broken up call the silica sand.It is main raw material for using foundry and general glass.

　Chemistry Composition：
Serial number
1
2
3
4
5
M（granularity）
40-80
70-140
100-200
200-270
>200
SiO2(%)
>99
>99
>98.2
>98
>98
Impurity（%）
<0.2
<0.2
<0.25
<0.25
<0.4
Melting point （C）
>1720
>1720
>1720
>1720
>1720


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ChuanShi Minerals Processing Factory Linshou Town
North Youyi street No.426, Shijiazhuang,China　P.C:050071
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