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Preparation method of large-specification honeycomb ceramic heat accumulator
The invention discloses a dry pressing preparation method of a large-size honeycomb ceramic heat accumulator, which comprises the following steps of: mixing at least one of high silicon, mullite, corundum, cordierite and silicon carbide in proportion, drying into spherical particles by adopting a spray drying method, adding a surface modification lubricant which is 0.1-1.0 wt% of the weight of the granular powder into the granular powder, and fully stirring and mixing to obtain spherical powder; pushing the spherical powder into a dry pressing die cavity filled with an alloy steel needle with angle taper, performing compression molding to obtain a green body, putting the green body into a kiln, burning to a certain temperature, and cooling to obtain a required honeycomb heat accumulator product; according to the invention, the raw material cost is reduced, the product regularity is higher, drying operation is not needed, the firing process operation is simplified, the production rate is improved, the raw material cost and energy consumption are reduced, organic matters are not needed in the used raw materials, and the problem that a large amount of organic matters are discharged to pollute air during firing of the honeycomb heat accumulator prepared by a plastic extrusion method is solved.
本发明公开了一种大规格蜂窝陶瓷蓄热体干压成型制备方法，将高硅、莫来石、刚玉、堇青石、碳化硅中至少一种按比例混合后采用喷雾干燥法干燥成球形颗粒，颗粒粉料中加入颗粒粉料重量0.1～1.0wt%表面改性润滑剂并充分搅拌混合得到球形粉状；将球形粉料推入装有带角锥度的合金钢针的干压模腔内压制成型为坯体，再将坯体放入窑炉内烧至一定温度冷却得到所需蜂窝蓄热体产品；本发明不仅降低了原料成本，产品规整度更高，无须干燥操作，简化了烧成工艺操作，提高了生产交率，降低了原料成本和能源消耗，而且所用原料中无需采用有机物，解决了塑性挤制法制备蜂窝蓄热体烧成时排放大量有机物污染空气的问题。
Preparation method of large-specification honeycomb ceramic heat accumulator
The invention discloses a dry pressing preparation method of a large-size honeycomb ceramic heat accumulator, which comprises the following steps of: mixing at least one of high silicon, mullite, corundum, cordierite and silicon carbide in proportion, drying into spherical particles by adopting a spray drying method, adding a surface modification lubricant which is 0.1-1.0 wt% of the weight of the granular powder into the granular powder, and fully stirring and mixing to obtain spherical powder; pushing the spherical powder into a dry pressing die cavity filled with an alloy steel needle with angle taper, performing compression molding to obtain a green body, putting the green body into a kiln, burning to a certain temperature, and cooling to obtain a required honeycomb heat accumulator product; according to the invention, the raw material cost is reduced, the product regularity is higher, drying operation is not needed, the firing process operation is simplified, the production rate is improved, the raw material cost and energy consumption are reduced, organic matters are not needed in the used raw materials, and the problem that a large amount of organic matters are discharged to pollute air during firing of the honeycomb heat accumulator prepared by a plastic extrusion method is solved.
本发明公开了一种大规格蜂窝陶瓷蓄热体干压成型制备方法，将高硅、莫来石、刚玉、堇青石、碳化硅中至少一种按比例混合后采用喷雾干燥法干燥成球形颗粒，颗粒粉料中加入颗粒粉料重量0.1～1.0wt%表面改性润滑剂并充分搅拌混合得到球形粉状；将球形粉料推入装有带角锥度的合金钢针的干压模腔内压制成型为坯体，再将坯体放入窑炉内烧至一定温度冷却得到所需蜂窝蓄热体产品；本发明不仅降低了原料成本，产品规整度更高，无须干燥操作，简化了烧成工艺操作，提高了生产交率，降低了原料成本和能源消耗，而且所用原料中无需采用有机物，解决了塑性挤制法制备蜂窝蓄热体烧成时排放大量有机物污染空气的问题。
Preparation method of large-specification honeycomb ceramic heat accumulator
一种大规格蜂窝陶瓷蓄热体制备方法
WU HANYANG (author) / ZHA HAORAN (author) / XU PENG (author) / WU GENYANG (author) / NI XIAOLAN (author) / FENG BIXIAO (author)
2023-02-03
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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