Cenosphere(floating bead) ke mofuta oa bolo ea molora e fofang e ka phaphamalang holim'a metsi.E bosoeu bo bohlooho, e tšesaane ebile e le sekoti ka boima bo bobebe.Boima ba boima ba eona ke 720kg / m3 (boima bo boima), 418.8kg / m3 (boima bo bobebe), boholo ba likaroloana bo ka bang 0.1mm, bokaholimo ba eona bo koetsoe ebile bo boreleli, conductivity ea eona ea mocheso e nyane, 'me ho hanyetsa mollo ke ≥ 1610 ℃.Ke mocheso o motle oa ho boloka mocheso o refractory, o sebelisoang haholo ho hlahisa li-castable tse khanyang le ho cheka oli.