TECHNO ECONOMIC FEASIBILITY REPORT ON …
VALUABLE PRODUCTS FROM UTILITY FLY ASH Joseph A. DeBarr', David M. Rapp', ... equipment to provide a high specific gravity suspension, and as cement additives. Cenospheres, hollow spheres composed mostly of silica, alumina and iron oxides, can be used as polymer fillers, in light-weight ceramics and as low dielectric constant substrates. Recovery of usell components fiom fly ash …