| 摘要 |
<p>Methods for producing solid, substantially round, spherical and sintered particlesfrom a slurry of a calcined, uncalcined or partially calcined raw material havingan alumina content of greater than about 40 weight percent. The slurry is processedwith spray drying methods into solid, substantially round, spherical and sinteredparticles having an average particle size greater than about 200 microns, a bulkdensity of greater than about 1.40 g/cc, and an apparent specific gravity of greaterthan about 2.60.</p> |
