"The present invention further relates to a flue gas filter means for filtering particles from flue gas and comprising a porous filter body of a particulate metal or metal-like material bonded together in the porous filter body, the porous filter body having a porosity of 30-90%, preferably 40-75%, such as 40-50%, and a maximum pore size of 10-100 ??m, preferably 25-75 ??m, such as 25-50 ??m, and s" . . . .