Increase of Gravity Separation Efficiency and development Gravity Separatorg

Abstract

Experiments were conducted to study the opportunity of increase of efficiency of seedseparation in gravity separator. A complex of physical characteristics of cereal seeds sorted by agravity separator has been studied. The attributes (physical properties of seed) of gravity separationin fluidized bed were found by using the mathematical method of pattern recognition. These datawere used for development of fractional technologies used for separation of difficult divided seedmixture. The separating of an initial seed mixture by indented cylinder on two fractions andprocessing of each fraction on gravity separator enables to increase efficiency of seed separation on1015 %.<br><br>A new version of a Gravity Separator has been developed to classify components of a seed mixturemainly according to density or to specific gravity of the components. Of the various gravity machines,the most widely used is the separator with a trapeziform deck. The process of separation ongravitational separators with the trapeziform deck is characterized by low specific seed loading on adeck 0.6-1.2 kgm-2c-1 ,as well as high specific electric power consumption 2,23 kWh/t. Thedeveloped new Gravity Separator with a rectangular deck allow to increase the specific seed loadingin 23 times, as well as to decrease the specific electric power consumption in 1,52 times incomparison with existing analogues. The optimum parameters of new Gravity Separators with therectangular deck were determined.