Efficient cooling tunnel kiln for firing multi-layer foamed ceramics

Abstract

The embodiment of the invention discloses an efficient cooling tunnel kiln for firing multilayer foamed ceramics. The efficient cooling tunnel kiln comprises a kiln body composed of a kiln body frameand a fire-resistant insulating layer, wherein the kiln body comprises a high-temperature firing section, a quenching section, a slow cooling section and a tail cooling section which are sequentiallyarranged; the high-temperature firing section is provided with a combustion system and a combustion-supporting system; the quenching section is provided with a quenching fan, a quenching air pipe anda quenching air duct; the slow cooling section comprises a refrigerant supply system and a heat exchange pipe arranged in the kiln body; and the tail cooling section comprises a tail cooling air pipeand a tail cooling air draft pipe. According to the tunnel kiln, the foamed ceramics after firing pass through the quenching section, the slow cooling section and the tail cooling section, the fired foamed ceramics in a high-temperature state can be rapidly and stably cooled, the efficiency is high, the surface defects of the foamed ceramics are less, and the product quality is high.

Description

technical field [0001] The invention relates to a high-temperature kiln, in particular to a high-efficiency cooling tunnel kiln for firing multilayer foamed ceramics. Background technique [0002] Foamed ceramic materials are sintered at high temperature from raw materials such as industrial waste (such as tile polishing waste, cinder, steel slag, etc.), low-quality clay (such as silt, shale, etc.) and inorganic foaming agents (such as silicon carbide powder). Energy-saving and environmentally friendly materials, with excellent thermal insulation, high temperature resistance, good sound insulation, etc., mainly used in building walls (inner partition wall or external insulation), metallurgical industry insulation, subway station noise reduction, automobile exhaust filtration and other industries. The porous structure is formed by high-temperature foaming to achieve the required performance of thermal insulation, sound attenuation, and filtration. In recent years, with the p...

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Problems solved by technology

[0006] It can be known from the above situation that although foamed ceramics are a product of "turning waste into treasure" and have obvious advantages, tunnel kilns have improved compared with roller kilns in terms of output and unit fuel consumption, but the overall cost (energy cost accounts for 40% of the total cost) %) is still higher than existing products, such as blocks for partition walls, prefabricated partition panels, gypsum keels and glass bricks, etc., so it is still difficult to meet the needs of ceramic enterprises and markets, resulting in difficulties in promotion

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