Ceramic long fiber and ceramic short fiber using fly ash base material for the same composite using the same and method of fabricating of the same

摘要

Provided is a method for manufacturing a ceramic long fiber using fly ash. The method for manufacturing a ceramic long fiber using fly ash comprises: a step of firstly manufacturing first rock powder by dry-grinding first rock; a step of secondly manufacturing the first rock powder by wet-grinding the first rock powder; a step of firstly manufacturing second rock powder by dry-grinding second rock; a step of secondly manufacturing second rock powder by wet-grinding the second rock powder; a step of dry-mixing fly ash powder, the first rock powder, and the second rock powder and manufacturing an amorphous melting body by melting and quenching the same; and a step of manufacturing a ceramic fiber by melting and spinning the amorphous melting body. The first rock includes higher Al_2O_3 and CaO contents than the second rock. The second rock includes higher K_2O and Na_2O contents than the first rock. The amorphous melting body includes 10-30 wt% of the first rock, 10-20 wt% of the second rock, and 60-80 wt% of the fly ash powder. The ceramic long fiber is manufactured by continuously spinning the firstly manufactured amorphous melting body at 100-3,000 rpm of winding speed by secondly re-melting the firstly manufactured amorphous melting body at 1,400°C in bushing and cooling the same at 1,350-1,380°C. The present invention simplifies a manufacturing process.