The liningless cupola is featured by that the furnace shaft, except the hearth section, is not lined but substituted by a heat-exchanging jacket (HEJ)which is made of heat-resistant metal.
无炉衬冲天炉的特点是炉体除炉缸部分外，不用炉衬，代之以耐热金属材料制成的炉胆；
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In this paper, heat transfer in electric furnace is analyzed for variant types of glass lined equipment during raising temreture . mathematical model is set forth and is solved by numerical method.
Design concept and commissioning results of an all ceramic fiber lined bogie hearth type annealing furnace using pulse firing technology are presented.