Agglomerated volatilized silica dust

摘要: There is provided a process for agglomerating volatilized silica in the form of grains by wetting same with from about 10 to 35% weight an alkali or alkaline earth metal oxide solution water, said agglomerated having densification factor 1.7 2.5 (when oven-dried) and dry bulk density 500 775 kg/m 3 . These can be used replace advantageously up 50%, some cases more, Portland cement manufacture concrete.