Jet mill for silicon-carbon negative electrode material and particle size control method

The invention discloses a jet mill for a silicon-carbon negative electrode material and a particle size control method, and belongs to the technical field of jet milling, the key points of the technical scheme are that the jet mill comprises a gas supply mechanism, a jet mill body, a grading mechanism, a collection kettle and a dust removal mechanism which are sequentially connected and matched for use, the jet mill body comprises a crushing kettle, a driving mechanism and a trigger control mechanism; a feeding pipe and a grading conveying pipe are connected to the smashing kettle, the grading conveying pipe leads to the grading mechanism, a plurality of air inlet pipes are further hinged to the smashing kettle and can rotate in any direction, one end of each air inlet pipe leads to the interior of the smashing kettle, and the other end of each air inlet pipe leads to the air supply mechanism. According to the jet mill for the silicon-carbon negative electrode material and the granularity control method, part