Teba Fly ash also known as flue-ash is one of the residues generated in combustion of coal and comprises the fine particles that rise with the flue gases. Ash which does not rise is termed bottom ash. Fly ash usually refers to ash produced during combustion of coal. Fly ash is generally captured by electrostatic precipitators or other particle filtration equipment before the flue gases reach the chimneys of coal-fired power plants and together with bottom ash removed from the bottom of the furnace is in this case jointly known as coal ash. The chemical properties are shown in Table A and picture then table number 2 show the physical properties according to
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