Silica / Glass Sand | ArrMaz
Silica sand deposits are most often surfacemined in open pit operations but dredging and underground mining are also used. For industrial appliions, deposits of silica yielding products of at least 95% quartz (SiO 2) are preferred. The production of such high purity sand requires that the extracted ore undergo significant processing to reduce impurities through the flotation of gangue ...