An apparatus (10, 110) for pulverizing a powdered material or product (P) comprises a pulverizing mill (20) of the type having a high-energy jet of gaseous fluid, the pulverizing mill comprising a pulverizing chamber (20a). ), Wherein in the atomization chamber, the powder material (P) as a result of collisions between its particles caused by a high energy jet (G) of a first gaseous fluid (A) such as nitrogen or air. The pulverizing chamber (20a) of the micronized and pulverizing mill (20) is designed to prevent the formation of deposits and / or accumulations of powdered material in the same pulverization chamber (20a). Bounded by a wall (20f) having at least one porous portion traversed by a regular flow (f1) of a second gas fluid (F) directed towards the interior of the gasification chamber. More specifically, the atomization device (10) extends around the atomization chamber (20a) and is supplied with a first gas fluid (A) that produces a high energy jet in the atomization chamber. A first outer annular chamber (20b) and a second wall associated with the porous wall (20f), which separates the atomization chamber (20a) and is directed to flow through the porous wall. A second intermediate annular chamber (20d) to which a gaseous fluid (F) is supplied, or in a variant of the atomizer (110), a high-pressure jet is provided instead of the first annular chamber. A system of channels (120b) is provided that carries the first gaseous fluid to be generated and extends through an annular chamber (120d) that is supplied with a second gaseous fluid (F) across the porous wall. Advantageously, the apparatus (10, 110) of the present invention, which avoids the formation of deposits and similar deposits inside and adjacent areas of the comminution chamber (20a) of the comminution mill (20), comprises: It improves the efficiency of the comminution process and the quality of the comminuted end product, and further significantly reduces the cost of maintenance over conventional c
