Method and device for recovering stocks of coal fly-ash

摘要

The present invention relates to a method of processing coal fly-ash after storage, especially for the purposes of using them to manufacture concrete or hydraulic cement. It comprises the following steps: a) mixture of the said ash with an aqueous phase, the pH of which is less than 8, preferably less than 6; b) attrition of the mixture coming from step a into pulp, until a granulometry is obtained which is close to that of the ash at the moment of its recovery after burning the coal; c) measurement of the solid content of the pulp after step b; d) possible adjustment of the solid content in order to bring it to the desired value. Application to the processing of combustion residues. IMAGE