Open AccessDetermination of rational process variables for multi-step centrifugal mills
Author(s) -
V G Vinokurov
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/773/1/012066
Subject(s) - mill , circuit breaker , fineness , process (computing) , engineering , mechanical engineering , flow (mathematics) , process engineering , engineering drawing , mechanics , metallurgy , computer science , materials science , physics , operating system
This paper presents the results of experimental studies into milling under multiple impacts in multi-step centrifugal mill designed at the Chersky Institute of Mining. In order to enhance milling capacity, it is proposed to add breakers of the mill with more breaking elements. However, addition of breaking elements sometimes fails to intensify milling and can adversely affect on the milling efficiency to to higher velocity air flows generated in the working space between the top and bottom breakers. The tests have determined the rational number of additional breaking elements, conditioned by the critical air flow velocity of 10 m/s in the breaker chamber of the lab-scale multi-step centrifugal mill. Given these conditions are fulfilled, the fineness number of the multi-step centrifugal mill with additional breaking elements grows considerable as against the base case of the mill without additional elements.