Cenosphere (ọkpụkpọ na-ese n'elu mmiri) bụ ụdị bọọlụ nwere oghere nke nwere ike ise n'elu mmiri.Ọ bụ ọcha na-acha ntụ ntụ, dị gịrịgịrị na oghere nwere obere arọ.Ya olu arọ bụ 720kg / m3 (arọ arọ), 418.8kg / m3 (ìhè arọ), urughuru size bụ banyere 0.1mm, ya elu na-emechi na-eji ire ụtọ, ya thermal conductivity bụ obere, na ọkụ na-eguzogide bụ ≥ 1610 ℃.Ọ bụ ezigbo okpomọkụ na-edebe refractory ihe, ọtụtụ ebe na mmepụta nke ìhè castables na mmanụ olulu.