Slurries: Raw materials mixed with water. Agglomerates can require high shear mixing action to break up for good dispersion. Normal cement-handling techniques can be used on fully Densified amorphous silica. The bulk density of undensified silica fume is 400 kg/m³ and 400 to < 700ĭensified: Grain size greater than 0.5mm. The term ‘undensified’ describes condensed silica fume sourced directly from a silicon or ferro silica furnace the bulk density at source can be as low as 150kg/m³ and has the consistency of a thick smoke. Physical Forms of Amorphous Silica Silica Fume Undensified Amorphous Silica A very fine pozzolanic material composed mostly of amorphous silica produced by electric arc furnaces as a co-product of the production of elemental silicon or ferrosilicon alloys.
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