1. Home
  2.  >> Recent

recent tender of low silika line powder 1

Jul 01, 1990 ble crystalline silica. Sand with low iron content and more than 98 silica is used in the manufacture of glass and ceramics. Silica sand also is used in foundry castings, in abrasives such as sandpaper and grinding and polishing agents, in sandblasting materials, in hydrau-lic fracturing to increase rock permeability to increase oil and gas re-