COMPOSITION OF MINE BACKFILL MATERIAL COMPRISING FLY ASH AND BOTTOM ASH SOLIDIFIED WITH CARBON DIOXIDE FROM CFBC BOILER

摘要

An embodiment of the present invention relates to a mine backfill material which comprises cement, and fly ash and bottom ash of a circulating fluidized bed combustion boiler, wherein carbon dioxide is fixed to the fly ash and bottom ash. The present invention provides a mine backfill composition capable of drastically improving workability and quality stability as a paste filling mine backfill material, solving the drawbacks of low fluidity, crack generation, and high costs of existing mine backfill cement and pulverized coal boiler combination.