METHOD OF ACTIVE IMPACT CRUSHING OF ROCKS AND ACTIVE IMPACT CRUSHER Russian patent published in 2025 - IPC B02C13/20 

FIELD: crushing or grinding of various materials.

SUBSTANCE: group of inventions relates to a method of crushing solid mineral raw materials and a crusher for implementing the method, which can be used, in particular, in the mining and processing industry, in the industry of construction materials. Method of active impact crushing, including destruction of material by oppositely directed and synchronized pulses of working element and active reflecting elements, at which their impact surface is oriented normally to the velocity vectors of the material particles directed by the working member, consists in the fact that the flow of the crushed material directed by the working member in the direction given by the under-rotor reflective element is divided into two flows at the moment of interaction with the active reflective elements, one of which contacts the lower active reflective element in the direction of the vector equal to the distance R1 from the point of separation of the pieces from the feed tray to the working surface of this element, and the other is in contact with the upper active reflective element in the direction of the vector equal to the distance R2=R1+(0.7…1.3)(Dwa+KVt), where Dwa is the weighted average size of large pieces, K=1…2 is a coefficient taking into account the excess flight speed of large pieces in relation to the linear speed of the working element along the maximum radius, V is the linear speed of the working element, t=Dwa/Vkk is the time during which large pieces with speed Vkk overcome the section of the path equal to the size of Dwa. Crusher comprises a housing in which there is a feed tray, one working member and two active deflector elements made with possibility of synchronous rotation, wherein lower active reflecting element is located at distance R1 from point of intersection of plane of feed tray with working member circumference, and the upper active reflective element is placed at a distance of R2=R1+(0.7…1.3)(Dwa+KVt), as specified above.

EFFECT: group of inventions provides higher efficiency of crushing.

11 cl, 11 dwg