Unlike construction sands which are used for their physical properties alone silica sands are valued for a combination of chemical and physical properties These include a high silica content in the form of quartz and more impor tantly very low levels of deleterious impurities particularly clay iron oxides and refractory …
Ultrason Sonochem 2011 Jan 18 1 389 93 doi 10 1016 j ultsonch 2010 07 006 Epub 2010 Jul 15 Improvement of iron removal from silica sand using ultrasound assisted oxalic acid Du F 1 Li J Li X Zhang Z Author information 1 School of Chemistry and Chemical Engineering Jiangsu University Zhenjiang 212013 nbsp …
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