Method for fractionating fly ash of a solid-fuel-fired large-scale furnace, having a downstream electrostatic precipitator, in dependence on the C content

摘要

In a method for fractionating fly ash of a solid-fuel-fired furnace having a downstream electrostatic precipitator in dependence on the C content, according to the invention it is provided that the fly ash (6) is subjected to flotation (12) which leads to a relatively C-rich froth product (13) and a relatively low-C waste product (15). The froth product (13) is preferably fed to the furnace (2) itself. <IMAGE>