Shijiazhuang Eternal Building Materials Limited Company

Specifications Refractory cenosphere 1. Size: -300micron 98%min 2. Floating Rate: 95%min 3. Bulk Density: 0.33-0.45g/cc(typically 0.38g/cc) Hollow microsphere/ floater/ Cenospheres Hollow microsphere is one kind of coal ash hollow ball which can floating on the water. Pale color, thin-walled hollow, very light weight. The volume weight range from 250 to 450 kg/m3, Particle size is about 0.1 mm. Its Surface closed and smooth, Thermal conductivity small, refractory degree equial or greager than 1700° C, is excellent insulation refractory materials, widely used in light pouring material production and oil drilling and many other aspects. The major chemical compositions of Hollow microsphere are silica and the aluminum oxide based, It has the functions of fine particles, hollow, light weight, high strength, wear-resistant, thermal insulation, fire-retardant insulation and many other features.