Patent ID: 6068803
Filing Date: 2000-05-30
Classification: C04B,Y02W,Y10S

Abstract:
A method of making a shaped product comprising:establishing a blend by admixing a major portion by weight of (a) a mixture of a coal combustion fly ash and a coal combustion bottom ash with (b) a calciferous additive in proportions which establish a mineralogical crystalline phase, said coal combustion bottom ash having an average particle size greater than an average particle size of said coal combustion fly ash;blending water with said blend to create a moistened blend; forming said moistened blend into a shaped product by compacting said moistened blend at a pressure of about 5,000 to 10,000 psi;hydrothermally treating said shaped product to facilitate the formation of interlocking mineralogical crystals therein; andadmixing said mixture of said coal combustion fly ash and said coal combustion bottom ash to create said mixture with an average particle size of about 90 to 400 microns.