Plastic and nonmetallic article shaping or treating: processes – Including step of generating heat by friction
Patent
1991-08-01
1993-07-13
Aftergut, Karen
Plastic and nonmetallic article shaping or treating: processes
Including step of generating heat by friction
264 30, 264 71, 264332, 264333, 264336, B28B 108, C04B 3560, F27D 116
Patent
active
052271064
ABSTRACT:
A reconstruction of a heating wall of a coking oven. The reconstruction includes utilization of a novel large size cast refractory repair module which may be utilized to replace existing silica bricks within a coke oven heating wall. The novel large size cast refractory module are monolithic structures formed from a castable refractory material having very high dimensional stability over a wide range of temperatures. Each repair module is a rectangular parallelepiped having one or more vertically extending flues formed therein, one end of a module being adapted to conform to the end shape of the damaged heating wall, the other end of the module being adapted to interfit with existing brickwork. The modules are assembled by initially removing damaged brickwork from the heating wall and then placing in the new modules which are mortared in place. The large size cast modules of the invention are manufactured by selecting a material which when cast will have the desired characteristics, mixing the dry refractory material with a relatively small amount of water, pouring it into a mold on a shaker table and vibrating the mold when filled, and then by firing the cast material after initial set at progressively higher temperatures up to 800 degrees Fahrenheit over a period of almost 60 hours.
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Aftergut Karen
Thompson John C.
Tonawanda Coke Corporation
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