| 摘要 |
The present invention relates so structural parts for electrolytic cells for pro duction of aluminium, which parts are intended to be in contact with the gas atmosphere in the electrolytic reduction cell. The structur al parts are wholy or partly made for a concrete consisting of 15 - 30 % by weight or a hydraulic cement 5 - 10 % by weight of microsilica a nd 65 - 85 % by weight of a refractory filler material. |
