Bottom flue gas passage structure of electrode calcination furnace with cap

Abstract

The invention discloses an electrode roasting furnace with a lid in the field of graphite electrode production, particularly relates to a furnace floor flue gas channel structure of the electrode roasting furnace with the lid. The furnace floor flue gas channel structure is realized by the following steps: an ondol pier is arranged between a furnace floor masonry and ondol surface bricks and is composed of an upper ondol pier brick section and a lower ondol pier brick section. The calandria arrangement in the furnace floor flue gas channel that is formed by the ondol pier bricks with circularsections greatly lowers the local resistance loss of flue gas. As the furnace is a running system consisting of a plurality of furnace chambers, the accumulated reduction value of local resistance loss is very remarkable. As section size of the ondol pier bricks is reduced and the calandria flue gas channel structure is additionally arranged, the flue gas circulation area in the channel is increased, and the friction resistance loss in the flue gas circulation process is effectively reduced.

Description

technical field [0001] The invention relates to a covered electrode roasting furnace in the field of graphite electrode production, in particular to a flue gas channel structure at the bottom of a covered electrode roasting furnace, which is used to reduce the resistance loss of the flue gas channel at the bottom of the furnace and improve the covered electrode roasting furnace. The distribution of internal negative pressure reduces the amount of refractory materials and heat storage loss in the furnace bottom channel, and achieves the purpose of saving fuel consumption of the electrode roaster. Background technique [0002] Furnace bottom flue gas channel is one of the important structures of the covered electrode roasting furnace, its function is to form the flue gas in the covered electrode roasting furnace together with the fire well, the space under the furnace cover, the lattice brick wall of the material box and the middle flue flow system. Under the negative pressur...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned technical problems, the present invention provides a flue gas passage structure at the bottom of the furnace with a covered electrode roasting furnace. , Poor structural strength, serious suction of cold air caused by large operating negative pressure, obvious reduction in thermal efficiency and other technical problems

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