| 摘要 |
The invention relates to a method and an apparatus for filtering process gas created in the ferroalloy smelting process, i.e. carbon monoxide gas, in order to essentially reduce the content of solids in the gas. In the filtering unit (24) gas containing solids is conducted through at least one filtering element (7), inert gas blowing (8) is directed to the filtering element (7) in order to detach the solid material from the surface of the filtering element (7), and in order to remove from the filtering unit (24) the solid material detached from the surface of the filtering element (7) the solid material is slurred by means of liquid fed (11) into the filtering unit (24). The slurry containing the sold material is removed from the filtering unit (24) through a discharge chamber (12). The filtering unit (24) includes a filtering chamber (1) and a discharge chamber (12) that is mechanically connected to the filtering chamber, as well as a discharge conduit (6) for the solids filtered from the gas, and the filtering chamber (1) is provided with at least one filtering element (7) for separating solids from the gas and at least one nozzle (8, 11) for discharging the filtered solids from the filtering chamber (1). |
