Process for Accelerating the Strength of Cement with a Low-Temperature Drying Process for Drying Calcium Sulfite Scrubber Residue Produced from a Wet Flue Gas Desulfurization (Scrubber) System

摘要

A method is provided for reducing the amount of Old Portland Cement that is to be mixed with interground fly ash in the manufacture of cement having a 120 slag performance by intergrinding fly ash with a dried calcium sulfite scrubber residue from a desulfurization process in which the agglomerated dried calcium sulfite is dried at a low temperature not exceeding 250° F. to increase the strength of the interground fly ash by as much as 40% for allowing the reduction in the amount of Old Portland Cement from 50% to 30%, thus to reduce cement cost.