Cleaning device for flue gas of a metallurgical plant, comprising a housing which is circular in cross section and has an inner circumferential surface as well as an inlet opening and an outlet opening for the flue gas, wherein the housing is arranged with its longitudinal axis vertical and is constructed as a Venturi washing tower with a Venturi throat and a flow channel adjoining thereat, wherein at least one injection nozzle through which a washing liquid can be injected into the flow channel is provided in the region of the Venturi throat, a guide device which is arranged in the housing and against which the flue gas can flow, wherein the outlet opening of the housing is arranged above the guide device, and a device, which is provided within the housing, for generating an electric field, wherein the flue gas within the housing can be conducted through the electric field so as to ionise the dust particles contained in the flue gas and to conduct them in the direction of the deposition surface, wherein the device for generating an electric field comprises an electrode pair (12.1, 12.2) and an electrode of the electrode pair is formed from at least one spray electrode (12.1) around which the flue gas can flow, wherein the other electrode (12.2) of the electrode pair is formed by the inner circumferential surface, which is circular in cross section, of the housing and serves as deposition surface for the dust particles and wherein the guide device is arranged in a base region of the housing and constructed to conduct the flue gas, after exit from the guide device, within the housing tangentially in the direction of the inner circumferential surface, which is circular in cross section, of the housing for separation off of dust particles. a housing which is circular in cross section and has an inner circumferential surface as well as an inlet opening and an outlet opening for the flue gas, wherein the housing is arranged with its longitudinal axis vertical and is constructed as a Venturi washing tower with a Venturi throat and a flow channel adjoining thereat, wherein at least one injection nozzle through which a washing liquid can be injected into the flow channel is provided in the region of the Venturi throat, a guide device which is arranged in the housing and against which the flue gas can flow, wherein the outlet opening of the housing is arranged above the guide device, and a device, which is provided within the housing, for generating an electric field, wherein the flue gas within the housing can be conducted through the electric field so as to ionise the dust particles contained in the flue gas and to conduct them in the direction of the deposition surface, wherein the device for generating an electric field comprises an electrode pair (12.1, 12.2) and an electrode of the electrode pair is formed from at least one spray electrode (12.1) around which the flue gas can flow, wherein the other electrode (12.2) of the electrode pair is formed by the inner circumferential surface, which is circular in cross section, of the housing and serves as deposition surface for the dust particles and wherein the guide device is arranged in a base region of the housing and constructed to conduct the flue gas, after exit from the guide device, within the housing tangentially in the direction of the inner circumferential surface, which is circular in cross section, of the housing for separation off of dust particles.