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 . <EOS>