THE RESEARCH OF ENERGY EFFICIENCY FOR MIXING BULK MATERIALS EQUIPMENT

Abstract

The energy parameters determination of bulk materials mixing equipment. Methodology.  The  paper  used  methods  of  mathematical  modeling,  comparative  analysis  and research  of  electric  drive.  The  particles  motion  study  inside  the  mixer  was  performed  on  the  theoretical mechanics laws basis.  Design  features  of  continuous  and  batch  bulk  materials  mixers  are  considered.  The operation principle and energy consumption are shown for a periodic action tape mixer with a productivity of 4000 kg / h. The continuous centrifugal mixer design and operation principle are presented. A particle motion  mathematical  model  inside  a  continuous  centrifugal  mixer  is  presented.  The  mutual  arrangement analysis of the bulk material particles inside the rotor was carried out and the conditions are determined under  which  a  high-quality  mixing  process  is  ensured.  Mathematical  models  are  proposed  to  determine equipment  design  and  technological  parameters  based  on  a  given  performance.  Operation  modes  are
determined  in  which  the  centrifugal  mixer  consumes  the  maximum  energy  amount.  An  algorithm  for determining the continuous electric centrifugal mixer power is proposed. The comparative analysis results of the continuous and batch mixers energy consumption with the same performance are presented. A study of operating modes and factors affecting energy consumption was carried out. Originality. Mathematical models are obtained that allows determining the relationship between a
continuous centrifugal mixer performance, its operating modes, and power consumption. Practical value. The obtained results permits to make an informed choice of equipment for mixing
bulk materials.