Rapid drying method and equipment for ceramic fiberboard

Abstract

The invention discloses a rapid drying method for a ceramic fiberboard. The rapid drying method is characterized in that microwaves are adopted as a hot source to heating and drying the ceramic fiberboard when hot blast is used for drying the ceramic fiberboard. The rapid drying method has the advantage of good drying uniformity; the microwaves have strong penetrating power and can be used for drying from the interior, so that all parts are heated uniformly; and with the decrease of water content, the absorbed microwave energy can be reduced, the ceramic fiberboard per se does not absorb the microwaves, water has strong absorption power, so that the part with high water content is high in energy, and the purpose of uniform drying is finally achieved. In a traditional drying manner, because of the heat insulation property of a fire-resistant board per se, the interior of the fire-resistant board is slow in temperature rise and slow in drying, and as the time goes on, the drying becomes slower and slower. Microwave drying is beneficial to prevention of low-water-content part from overhigh temperature to result in deterioration and scorching of internal fiber binders and yellowing and quality losses of the ceramic fiberboard.

Description

technical field [0001] The invention relates to the field of ceramic fiberboard production, in particular to a method and equipment for rapid drying of ceramic fiberboards. Background technique [0002] At present, among domestic manufacturers of ceramic fiber boards, most of them use traditional hot air drying furnaces, which mainly have the following disadvantages: [0003] 1. Due to the poor thermal conductivity of ceramic fiberboard, it takes a long time to dry by traditional hot air, it is difficult to dry deeply, and the final product has a high moisture content. [0004] 2. The uniformity of drying is poor. When drying, it is easy to cause yellowing and scorching due to excessive local temperature or too long drying time, which affects product quality. [0005] 3. Most of them use gaseous fuel as energy source, which produces waste gas and pollutes the environment. [0006] 4. The thermal inertia is large, which is not conducive to the temperature control in the dry...

AI Technical Summary

Problems solved by technology

[0003]1. Due to the poor thermal conductivity of ceramic fiberboard, it takes a long time to dry by traditional hot air, it is difficult to dry deeply, and the final product has a high moisture content

[0004]2. The uniformity of drying is poor. When drying, it is easy to cause yellowing and scorching du

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