BORON-ELUTION SUPPRESSION METHOD

摘要

Provided is a boron-elution suppression method capable of more stably suppressing the elution of boron from coal combustion residue. A boron-elution suppression method for suppressing the elution of boron from coal combustion residue by mixing and combusting multiple types of coal including a first coal having a boron concentration in mass ratio of 50 ppm or higher and one or more other types of coal different from the first coal, wherein the mixing is performed in a manner such that after mixing, the mass ratio P0 in the coal overall of the total amount of alkaline earth metals measured by oxide amount to the total amount of boron is 100 or higher.