| 摘要 |
A process for the preparation of porous heat insulation material comprises grinding of active silica material and mineral filler, mixing of components of raw mixture with aqueous solution of hydroxide of alkali metal, steaming of the prepared raw mixture in the medium of saturated aqueous solution. After steaming of the raw mixture the aluminium powder is added into it, mixed for 9-11 minutes, the product is formed and after that it is dried by the atmosphere air for 3-5 minutes. |
