Patent ID: 6224004
Filing Date: 2001-05-01
Classification: B02C

Abstract:
A mill comprising:a milling chamber;an expelling device that expels high-velocity gas into the milling chamber, said expelling device having an opening that receives a milling material and grinding the milling material by expelling it together with the high-velocity gas;a particle classifier that classifies the ground particles of the milling material and returns back into the milling chamber the ground particles of the milling material that are not of desired size, said particle classifier being located such that it faces the milling chamber; anda partition that divides the milling chamber into a first guide path that guides the particles of the milling material that are ground at the milling area into the particle classifier and a second guide path that guides back into the milling area the ground particles of the milling material classified by the particle classifier as requiring further milling.