Estimating the Efficiency of a Hammer Mill with Combined Methods for Suspending Hammers by a Rotor

The efficiency of a hammer mill with combined methods for suspending hammers by the rotor was estimated under the production conditions of the fractional preparation of fluxes in the agglomeration shop of branch No. 1 of the Alchevsk Metallurgical Plant (Southern Mining and Smelting Enterprise). Tests of a DMRiE 14.5 × 13 hammer mill was conducted to determine the crushing degree, relative capacity, and relative number of failures of the working parts using hammers in two design types: when a series of hammers are mounted on the suspension axle and when a series of hammers are mounted using an auxiliary axle installed in the leg. It was found that the average crushing degree of fluxing limestone in the advanced mill was reduced by 2.5%, but it did not have any effect on its average relative capacity. The relative number of hammer failures during operation decreased from 0.087 to 0.0006, and the rotor lifetime increased by 1.1 times.