REFRACTORY FURNACE DOORS, AND REFRACTORY WALLS ENVELOPING FURNACE DOORS; BATTERIES OF COKE FURNACES Russian patent published in 2014 - IPC C10B25/06 C10B25/12 C10B25/00 C10B15/02 

FIELD: construction.

SUBSTANCE: invention relates to a locking device of a refractory door closing coke furnaces with a horizontal chamber and to a coke furnace closing and sealing method. The above device is made from refractory material; with that, material containing silicon oxide or that containing silicon and aluminium oxides is used. The door device consists of a coke furnace chamber wall enveloping the door that is essentially located above the door and a moving door located below and made in the form of a plug. Therefore, less cold air from outside environment enters the coke furnace chamber during the loading process, and heat loss is minimised. The door can contain ellipsoidal projections, due to which coal can be easier loaded to the coking chamber. The coke furnace chamber wall enveloping the furnace door is made from the same material as the coke furnace chamber door. Coking mass is located in the coke furnace chamber so that the lower end of the part of the coke furnace chamber wall, which is located above the coke furnace chamber door, is located above the upper end of the coking mass.

EFFECT: material has low thermal expansion coefficient and good heat insulating properties so that the door is not distorted and deflected during the coking process.

69 cl, 5 dwg