Silica sand is produced by crushing sand stone or quartzite of open texture, and washing and garding it to yield requisite grain distribution. Silica flour is produced by crushing grinding and washing the high grade quartz, quartzite rocks or from white silica sand.

CHEMICAL COMPOSITION:  Sio2 the general impurities are iron/aluminium oxides and lime.

SPECIFICATION:   Glass making sand IS 488 - 1963. Indian Standard for silica sand used for glass making. Special Grade: intended for the manufacture of high grade colour less glass. Such as Crystal Glass, tableware & other decorative wares. b)Grade 1. intended for the manufacture of decolourised glassware, such as container ware, lamp ware. c)Grade 2. intended for the manufacture of glassware where slight tint is permissible. d) Grade 3 intended for the manufacture of glasses like sheet glass and some colored glass like iron sulphur amber glass.

USES :   Silica sand used for water purification and manufacture of glass, synthetic foundry moulding catalysts, disodium ultramarine etc. it is also used for acid heat resistant ceramics, refractories, pottery glaze, enamel etc. Silica sand of 150 mesh is used in Sawing stone, grinding and surfacing glass and polishing marble Rounded Grains of silica sand are used for sand blasting it is also used as a filler in paints 'Wood Paste' moulded hard rubber goods, gypsum Plasters, oxychloride acoustic plasters and soap.