Munzvimbo ine simba rekushandiswa kwekupisa kwakanyanya, kushandiswa kwe cenospheres mu refractory uye foundry coatings kuri kuchinja zvinhu. Aya mabhora akareruka, asina chinhu, anobva mu fly ash, ari kuratidza kuva mhinduro inoshanda yekuwedzera insulation yekupisa uye kushanda kwe coatings munzvimbo dzakanyanya maindasitiri. Kunzwisisa Mabhora: Mabhora akareruka, asina chinhu, akareruka, anoumbwa zvakanyanya ne silica ne alumina, anowanikwa sezvinhu zvinobva mukupisa kwemarasha.