| 摘要 |
1. Door plugs for coke oven doors, which are of ceramic material and are held at a distance from the coke oven door, the door plug, in the operating condition, penetrating into the oven chamber and keeping the oven charge at a certain distance from the door body and the door body being pressed, during the coking operation, by a locking device against the door frame of the oven, characterized by the use of ceramic plates (1) of hydraulically setting refractory concrete, the essential constituents of which are aluminium oxide (Al2 O3 ) in a proportion of 40-55 %, silicon dioxide (SiO2 ) in a proportion between 40 and 50 % and iron oxide (Fe2 O3 ) in a proportion between 0.5 and 1.5 %, the plates having a thickness from 35 to 120 mm. |
