Non-metallic minerals

Spherical stone

Spherical stone (alias: silica, silica, silica ball, silica ball filler, ball mill filler, ball mill special spherical stone, wear-resistant ball) is a light cyan (light gray or gray) microcrystalline pyrogenic rock, its cross section dense hardness, the Mohs hardness of the silica stone is more than 7, the silicon content is more than 99%, the iron content is less than 0.32%, due to the high wear resistance and hig…