Bottom ash composition
Coal bottom ash and boiler slag are the coarse, granular, incombustible . the dry bottom ash is a function of chemical composition, with higher carbon content . Composition of bottom ash. Bottom ash is composed of inert, non-combustible materials that are left over after the combustion process: sand, stones, ashes from . gravel and crushed stone are used. Table shows the typical chemical composition of bottom ash obtained by burning bituminous coal and sub- bituminous. The chemical composition of some bottom ash provides unique pozzolanic properties that, as with cementitious materials, can result in a favorable time-dependent increase in strength (Kumar and Vaddu ). Environmental Considerations Air quality during any highway construction involving bottom ash and boiler slag should be. The chemical makeup of fly and bottom ash varies significantly and is dependent on the source and composition of the coal being burned. This can include a wide variety of toxic substances from trace amounts to percent japanesepornstar.info: James Hannan. Jan 09, · Bottom ash is the coarser component of coal ash, comprising about 10 percent of the waste. Rather than floating into the exhaust stacks, it settles to the bottom of the power plant’s boiler.