Silica sand and glass industry SlideShare
Apr 23, 2013· RAW MATERIALS Raw Materials Approximate Proportion (wt %) Provides Approximate Proportion in glass (wt %) Soda ash (NCO3) 25 Soda (Na2O) 18 Limestone (CaCO3) 10 Lime (CaO) 7 Silica sand (SiO2) 65 Silica (SiO2) 75 Raw materials used in limesoda glass a) Silica sand Silica sand suitable for glass manufacture is however relatively rare, because ...