Floating bead is a kind of can float to the surface of fly ash hollow ball, are pale, thin wall hollow, weight is light, Drift beads of the chemical composition is given priority to with silica and 3 oxidation 2 aluminium, with a fine grain, hollow, qualitative light, high strength, wear resistance, high temperature resistant, thermal insulation, insulation, flame retardant, and other features, is one of the raw materials are widely used in refractory industry.
