semi densified microsilica the Materials be used in refractory widely,has high fluidity .the bulk is 250-350 kg/m3. Microsilica , also called silica fume or micro silica, is a byproduct of producing silicon metal or ferrosilicon alloys. Silicon metal and alloys are produced...

Micro silica from Silicon metal.have high SIO2, lower LOI, and has high PAI >135% Microsilica (Silica fume), they used in concrete. it can improve concrete's properties such as compressive strength, bond strength and abrasion resistance, reduces permeability, and therefore...

the material is dark colour, it is seldom. it has the higher activity more than 140%. ...