Cyclone air separator for separating granular material which is to be separated and which is suspended in a conveying gas , having - a first, cylindrical hollow member which has a tangential to helical inlet with respect to the cylindrical form for the conveying gas which carries the material to be separated, - a second, conical hollow member which is located under the first, cylindrical hollow member and which is connected directly to the first, cylindrical hollow member , wherein the tapered tip of the second, conical hollow member is directed downwards, - at least one immersion pipe which extends through the conical wall of the second, conical hollow member , which projects upwards inside the second, conical hollow member , and the opening of which is arranged in the volume of the first, cylindrical hollow member , wherein - the downwardly directed, tapered tip of the second, conical hollow member is connected to an outlet for fine material (F), wherein a rotating rod basket is arranged in the first, cylindrical hollow member , which rotating rod basket - is surrounded by a static and circular conveying channel for coarse material (G), which conveying channel abuts but does not make contact with the lower external circumference , wherein the conveying channel for coarse material (G) is connected to an outlet out of the first, cylindrical hollow member , and - the volume which is surrounded by the rod basket is connected in terms of flow to the second, conical hollow member , characterized in that a substantially conical member , whose tapered tip is directed upwards, is arranged above the opening of the immersion pipe , wherein helically formed guiding plates whose winding direction corresponds to the rotation direction of the rod basket are provided on the external surface (O k ) of the substantially conical member , and wherein the substantially conical member is connected to the rod basket via a shaft and conjointly rotates with the rod basket . - a first, cylindrical hollow member which has a tangential to helical inlet with respect to the cylindrical form for the conveying gas which carries the material to be separated, - a second, conical hollow member which is located under the first, cylindrical hollow member and which is connected directly to the first, cylindrical hollow member , wherein the tapered tip of the second, conical hollow member is directed downwards, - at least one immersion pipe which extends through the conical wall of the second, conical hollow member , which projects upwards inside the second, conical hollow member , and the opening of which is arranged in the volume of the first, cylindrical hollow member , wherein - the downwardly directed, tapered tip of the second, conical hollow member is connected to an outlet for fine material (F), - is surrounded by a static and circular conveying channel for coarse material (G), which conveying channel abuts but does not make contact with the lower external circumference , wherein the conveying channel for coarse material (G) is connected to an outlet out of the first, cylindrical hollow member , and - the volume which is surrounded by the rod basket is connected in terms of flow to the second, conical hollow member , a substantially conical member , whose tapered tip is directed upwards, is arranged above the opening of the immersion pipe , wherein helically formed guiding plates whose winding direction corresponds to the rotation direction of the rod basket are provided on the external surface (O k ) of the substantially conical member , and wherein the substantially conical member is connected to the rod basket via a shaft and conjointly rotates with the rod basket . <EOS>