| 摘要 |
<p>The invention relates to a thermally insulating structural component ( 10 ) such as a cover of a container ( 5 ), in particular a molten salt electrolytic cell which component ( 10 ) is inert and resistant to corrosive media ( 1 ) at high temperature in the form of liquids, vapours and/or gases, in particular NaAlF4, AlF3, HF or O2, and which during use is exposed to such corrosive media ( 1 ). The component ( 10 ) comprises thermal insulating material ( 30 ) shielded from the corrosive media ( 1 ) by an openly porous or reticulated alumina structure ( 20 ) which is made impermeable by a compact filler material ( 15 ) resistant and inert to the corrosive media and comprising compacted particles of refractory material, in particular alumina cement. The structural component ( 10 ) can have a top metallic shell ( 40 ) which extends over the thermal insulating material ( 30 ) and downwards along lateral sides of the component ( 10 ). The insulating material ( 30 ) can be secured to the alumina structure ( 20 ) through nuts ( 50 ) and bolts ( 60 ).</p> |
