| 摘要 |
<p>A method is disclosed of producing particulate materials for use as fillers/extenders in plastics manufacturing by beneficiating fly ash. The beneficiation process includes the steps of: forming a slurry S of the fly ash; de-agglomerating and screening particles in the slurry to produce a suspension; removing cenospheres J from the suspension; and removing carbon K from the suspension. In addition the steps of removing magnetic material L from the suspension; dewatering and drying the residual material; classifying particles in the residual suspension into coarse particles M and fine particles O; grinding the coarse particles M to produce ground particles N; and classifying the fine particles into plain fine particulate material P and classified fine particulate material Q may be included. The materials M/N/O/P/Q may be mixed together in varying proportions for specific applications.</p> |
