Novel tunnel-type folded-rail continuous sintering furnace and sintering method thereof

Abstract

The invention relates to a novel tunnel-type folded-rail continuous sintering furnace and a sintering method thereof. The novel tunnel-type folded-rail continuous sintering furnace comprises a furnace body, wherein one end of the furnace is open while the other end of the furnace is closed; an upper layer of roll-type or push-plate-type conveying devices (3) and a lower layer of roll-type or push-plate-type conveying devices (2) which are folded and move in opposite directs are arranged in the inner cavity of the furnace; a slag falling-preventing baffle plate (6) and a carrying mechanism (10) capable of doing an up-and-down reciprocating movement are arranged between the two layers; and a heating device (9) and a fuel gas curtain separating nozzle (8) are arranged in the inner cavity of the lower layer of the furnace. By virtue of a super-fast single-sided heating sintering mechanism, and by the adoption of a pair of opposite conveying devices with an extremely high heat exchanging rate and an extremely high afterheat utilizing rate, the temperature difference between the upper layer and the lower layer can remain about 150-300 DEG C at the same section, thus achieving the most economical ceramic continuous sintering state; therefore, the novel tunnel-type folded-rail continuous sintering furnace is a novel continuous sintering furnace with a super-high sintering speed, an extremely high heat exchanging rate and a super-short length.

Description

technical field [0001] The invention relates to an industrial kiln for firing ceramic products, in particular to a novel tunnel-type folding track continuous firing kiln and a firing method thereof. Background technique [0002] At present, roller kilns are often used for firing ceramics in industry. In addition, there are continuous firing kilns such as tunnel kilns and shuttle kilns. Combined with the combination method of the drying room, the waste heat in the cooling part is drawn back to the preheating part to dry the green body to be fired through the heat recovery and ventilation device, which saves energy. However, the existing continuous firing kiln adopts a single-direction conveying and firing method, and the length of the kiln is relatively long. Using this method to dry the green body needs to waste a lot of electric energy. The heat exchange effect is not ideal, and the heat energy utilization rate is low. Therefore, the current ceramic firing kilns have the ...

AI Technical Summary

Problems solved by technology

However, the existing continuous firing kiln adopts a single-direction conveying and firing method, and the length of the kiln is relatively long. Using this method to dry the green body needs to waste a lot of electric energy. The heat exchange effect is not ideal, and the heat energy utilization rate is low

Therefore, the current ceramic firing kilns have the disadvantages of high labor intensity, large space occupation, low waste heat utilization rate, long firing time, and large energy consumption.

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