Shape of Hammers of Hammer Rotors for Inertial Impact Fracture

A brief review of machines for pit wall scaling is given. The inertial impact technique is compared with the surface miner operation. The authors describe an inertial impact machine with a hammer rotor for pit wall scaling. The procedure and data of the numerical and lab-scale testing of the machine are presented. The tests produced the rational range of lip angles for hammer plates and the preferable impact frequency, which ensure the minimized energy intake of the rotor motor and the least counterforce of rock mass to the bearing seat of the rotor at the preserved efficiency of fracture process.

Automated summary

This paper discusses different techniques for scaling the pit wall and presents a new inertial impact machine. Through testing, the optimal design parameters were determined to improve efficiency and reduce energy consumption.