IMPROVEMENTS OF OPERATION BY REMODELLING OF THE TRIPLE-FIRED INGOT-REHEATING FURNACE
1956 Volume 42 Issue 12 Pages 1106-1111
Details
1956 Volume 42 Issue 12 Pages 1106-1111
Summarized are the details of remodelling a triple-fired furnace which heats ingots of 400mm square or larger, together with the improvements obtained and the further problems to be overcome. The remodelling consisted mainly of increasing space of the bottom-heating zone, changing skid pipe construction, introduction of automatic control and etc. Through which reduced slag accumulation, less temperature gradient within an ingot and imptoved thermal efficiency have been realized.
Actual operation of the furnace have indicated the following teints as a clue to further improvements:
(1) Number of supports of skid should be kept to a minimum and width of the skid should be taken as wide as possible so that the ingots might sufficiently heated from the bottom side.
(2) Space of bottom heating zone should be large enough giving heat release of approximately 100×103 kcal/m3h.
(3) To avoid a burning on ingot ends, large capacity burners should be arranged directed to the middle of ingots.
