Determining the efficiency of centrifugal counterflow mills

International Conference on Mechanical Engineering, Automation and Control Systems 2018

Semikopenko, I.A.^1 ; Vavilov, D.V.^1 ; Smirnov, D.V.^1

Belgorod State Technological University Named after V.G. Shukhov, Kostukov St., 46, Belgorod

308012, Russia^1

关键词: Analytical equations;    Central zone;    Counter-flows;    Dynamic environments;    Grinding efficiency;    Multiple interactions;    Particles density;    Throughput capacities;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/560/1/012119/pdf
DOI  :  10.1088/1757-899X/560/1/012119

来源: IOP

【 摘 要 】

The article introduces derivation of analytical equation for determining the efficiency of centrifugal counterflow mills with selective grinding. Throughput capacity of the centrifugal counterflow mill is one of the main factors influencing concentration of the mill material in counterflows of the discharge. Particles density in the air dynamic environment must provide collision of particles in the central zone of the discharge. If particles density is not sufficient, then particles arriving into the central zone will interact with accelerating elements of the opposing rotor. It may result in high wear of the accelerating elements and getting of the metallic dust into the prepared material. Increased material concentration in the air flow can lead to multiple interactions and buffering the particles, that will impact the grinding efficiency and result in grinding material coarsening.