NHXA Series Powder Concentrator is the principal equipment to ensure the sand quality in the process of sand-making(dry method). It is mainly composed of motor, fan, cyclone, powder room, distributor and main air pipe. The proportion of fine granularity of final product can be adjusted by speed adjustment. The higher the rotate speed is, the more the fine granularity is, which means the powder content will be less. Otherwise, the powder content will be more. It is easy to control the powder content of manufactured sand in order to meeting the different needs of customers.