Setting device and method for drying honeycombed ceramic by waste heat air

Abstract

The invention discloses a setting device and method for drying a honeycomb ceramic by waste heat air. The setting device and method are mainly used for heating, drying and forming of the honeycombed ceramic, the setting device comprises a main body and a continuous production line, and a waste heat air storage box and a waste heat air supply pipe are arranged under the production line; and a sliding rail is arranged on the upper part of the waste heat air storage box, and a plurality of heat dissipating micro holes are formed in the upper top surface of the waste heat air storage box. The waste heat air heats the honeycombed ceramic through the heat dissipating micro holes, and the discharged water vapor is uniformly discharged through moisture exhausting holes above the continuous production line; the honeycomb ceramic is loaded in a product box, and the product box is continuously propelled by a hydraulic top machine and sequentially enters a preheating section, a high temperature section and a cooling section; and after drying, the water content is about 3-5%, and blank cutting can be carried out during firing.

Description

technical field [0001] The invention relates to the field of waste heat utilization, in particular to a shaping device and method for drying honeycomb ceramics by using waste heat air. Background technique [0002] Honeycomb ceramics, as a waste gas filtration carrier and inorganic non-metallic regenerator, have been widely used in national economic production fields such as iron and steel metallurgy, petrochemical industry, automobile exhaust, environmental protection management, etc., and are indispensable for realizing efficient thermal energy combustion and environmental protection management important functional ceramic products. At present, the main process equipment for the preparation of domestic honeycomb ceramics is mixing, ball milling, mud refining, vacuum, extrusion molding, drying, firing, and fine billet. The main molding stage of this product is the extrusion stage. At this stage, whether it is the mud after vacuum or the rough billet extruded, the water con...

AI Technical Summary

Problems solved by technology

The main molding stage of this product is the extrusion stage. At this stage, whether it is the mud after vacuum or the rough billet extruded, the water content is about 18-22%, and the billet itself is very soft and does not have Structural strength, very easy to deform

However, the honeycomb ceramic body at this stage cannot be drained and dried directly by heating the surface layer, because the heat transfer has a step-shaped attenuation from the outside to the inside when the surface layer is heated, and the surface of the body has been heated and dried, but the moisture inside the body still cannot be discharged. , which is also the main reason why the honeycomb ceramic regenerator is easy to crack in the drying stage

At present, the main domestic continuous drying lines for honeycomb ceramics are mainly microwave drying or infrared drying with active heating. Taking microwave drying as an example, its total installed power is 40-50Kw, which belongs to high energy consumption equipment.

With the further promotion of the preparation of honeycomb ceramics and the continuous decline of product prices, the traditional microwave drying line that relies on external energy for active heating is no longer economical. At the same time, microwave equipment also has potential risks such as microwave leakage, which is harmful to operators. The professional level requirements are relatively high, which is not conducive to large-scale promotion and application

Moreover, with the traditional microwave continuous drying molding method, the moisture content of the general honeycomb ceramic body decreases too quickly, and it is less than 2% by the time the equipment is exported. After the honeycomb ceramics are vitrified, the increase in strength has higher requirements on the blades of the cutting equipment, which increases the difficulty of cutting and increases the processing cost.

Images