Abstract: In order to reduce the concentration of CO in the waste gas of coke oven batteries that are heated by lean gas, additional sealing is used for the brick-work of die regenerator separating walls of the coke oven battery, as well as a coke oven battery with a regenerator having brick-built separating walls, between ducts that carry lean gas and waste gas, in which one has arranged stainless steel sheets in front of the regenerator separating wall with, preferably, an intermediate layer that is located behind it that comprises ceramic fibers. In this regard, the stainless steel sheets, that overlap with one another in each case, are preferably held by rod-shaped tensioning device.

Abstract: A roof structure has a plurality of layers of heat resistant material, at least a first of the layers including a first brick layer, at least a second of the layers above the first of the layers including a heat resistant compound, and the heat resistant compound being unshaped when initially installed above the first of the layers. A method of forming a roof structure in an opening between side walls of a chamber includes the steps of installing at least one layer of bricks in the opening directly above the chamber, applying at least one layer of a first concrete in an unshaped form in the opening over the at least one layer of the bricks, tamping the at least one layer of the first concrete at at least a first predetermined temperature, and allowing the at least one layer of the first concrete to harden.

Abstract: A roof structure has a plurality of layers of heat resistant material, at least a first of the layers including a first brick layer, at least a second of the layers above the first of the layers including a heat resistant compound, and the heat resistant compound being unshaped when initially installed above the first of the layers. A method of forming a roof structure in an opening between side walls of a chamber includes the steps of installing at least one layer of bricks in the opening directly above the chamber, applying at least one layer of a first concrete in an unshaped form in the opening over the at least one layer of the bricks, tamping the at least one layer of the first concrete at at least a first predetermined temperature, and allowing the at least one layer of the first concrete to harden.

Abstract: In a coke oven of the type having a plurality of filling shafts with openings and caps therefor at the oven roof, in order to reduce the temperature gradient and heat losses at the roof of the coke oven, the caps of the filling shafts are each directly mounted on fire-resistant brickwork rather than a metallic frame; also, the associated caps are each made of ceramic material with optional reinforcement and include a metal insert which is heat insulated from the oven by a heat barrier. The metal insert facilitates magnetic hoisting of the cap during unloading and loading of the oven and is provided with an adjoining layer of fired clay and felt. The engaging surfaces of the cap body and the brickwork of the filling shaft opening are preferably conical and define an annular recess on the outside for pouring cement or the like to secure the cap in position and seal off the shaft.

Abstract: A plug for protecting coke-oven chamber doors from the action of the internal temperature in the oven, which has a plane outside facing away from the door body, and which is built up from a plurality of refractory bricks and can be mounted on the inside of the door body. The bricks have recesses which each penetrate the plug and bricks for receiving bolts which can be screwed into bores in the plug side of the door.

Abstract: A damaged part of a coke oven such as a heating wall is restored by selecting masonry bridging material with an essentially low thermal expansion property to close the heating flue and support the heating wall. The selected masonry bridging material may take the form of bridging bricks or castable concrete material. Such masonry bridging material is arranged to close and support the existing masonry which is to remain as part of the heating wall for continued use. The masonry bridging material forms flat connecting surfaces used to provide lateral expansion joints which are aligned from course-to-course. The expansion joint compensates for length changes of the renewed part of the heating wall formed by stretcher bricks having the usual relatively high thermal expansion property. The masonry bridging material reforms an internal crosswall that defines part of a heating flue chamber within a heating wall.