Upgrading silica rock quality by using attrition scrubbing …
The study was carried out to produce high-purity silica sand used for glass making. Generally, all grades of silica sands are comparable in their chemical composition except for iron oxide (Fe 2 O 3) ... Silica sand after attrition scrubbing using distilled water and citric acid at various concentrations (0.25 M, 0.5 M, and 0.75 M) followed by ...
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