Agglomerated volatilized silica dust

Details Agglomerated volatilized silica dust Agglomerated volatilized silica dust

C - Chemistry, Metallurgy

04

B

261/59

C04B 14/04 (2006.01) C04B 18/02 (2006.01) C04B 18/14 (2006.01) C09C 1/30 (2006.01)

Patent

CA 1197271

A B S T R A C T There is provided a process for agglomerating volatilized silica in the form of grains by wetting same with from about 10 to about 35% by weight of an alkali or alkaline earth metal oxide solution in water, said agglomerated volatilized silica having a densification factor of 1.7 to 2.5 (when oven-dried) and a dry bulk density of from about 500 to 775 kg/m3. These agglomer- ated volatilized silica grains can be used to replace advantageously up to 50%, and in some cases more, by weight of Portland cement in the manufacture of concrete.

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