Magnetic separator for the dry separation of material particles having different magnetic susceptibilities, comprising: a cylinder rotatable around its longitudinal axis, a stationary magnetic device arranged within the cylinder and extending essentially across the length of the cylinder, said magnetic device being designed to generate a continuous magnetic field in the longitudinal direction of the cylinder, a sorting chamber, which extends along a portion of the outer surface of the cylinder in the circumferential direction of the cylinder and parallel to the longitudinal axis of the cylinder, along the height of the cylinder, means for the dispersed output of the material particles into the sorting chamber, means for generating a stream of conveying air through the sorting chamber, wherein, during operation, the material particles are conveyed through the sorting chamber by means of the stream of conveying air, with a motor for rotating the cylinder around its longitudinal axis, wherein, during operation, the outer surface of the cylinder is moved by the cylinder being rotated in a direction essentially perpendicular to the direction of the stream of conveying air; and wherein the magnetic device and the cylinder are designed and orientated with respect to one another in such a way that both the portion of the outer surface having the sorting chamber and the interior of the sorting chamber have a magnetic field that is strong enough to attract material particles onto the outer surface, characterized in that the magnetic separator is operable at a negative pressure in relation to the environment by means of a blower, which draws air from the magnetic separator. a cylinder rotatable around its longitudinal axis, a stationary magnetic device arranged within the cylinder and extending essentially across the length of the cylinder, said magnetic device being designed to generate a continuous magnetic field in the longitudinal direction of the cylinder, a sorting chamber, which extends along a portion of the outer surface of the cylinder in the circumferential direction of the cylinder and parallel to the longitudinal axis of the cylinder, along the height of the cylinder, means for the dispersed output of the material particles into the sorting chamber, means for generating a stream of conveying air through the sorting chamber, wherein, during operation, the material particles are conveyed through the sorting chamber by means of the stream of conveying air, with a motor for rotating the cylinder around its longitudinal axis, wherein, during operation, the outer surface of the cylinder is moved by the cylinder being rotated in a direction essentially perpendicular to the direction of the stream of conveying air; and wherein the magnetic device and the cylinder are designed and orientated with respect to one another in such a way that both the portion of the outer surface having the sorting chamber and the interior of the sorting chamber have a magnetic field that is strong enough to attract material particles onto the outer surface, characterized in that the magnetic separator is operable at a negative pressure in relation to the environment by means of a blower, which draws air from the magnetic separator.