Determining the efficiency of centrifugal counterflow mills

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 d...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2019-06, Vol.560 (1), p.12119
Main Authors: Semikopenko, I A, Vavilov, D V, Smirnov, D V
Format: Article
Language:English
Subjects:
Air flow
Collision dynamics
Counterflow
Density
Discharge
Efficiency
Grinding mills
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Summary: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.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/560/1/012119