Effect of coal slime content on dense medium suspension stability and fluidity

The stability and fluidity of dense medium suspension are two contradictory factors that affect the separation performance of dense medium cycloneBy dense medium suspension density and apparent viscosity measurement，the effect of dense medium properties on the separation performance was investigated，and the best coal slime content was determined by labscale dense medium separationThe result showed that coal slime content was the major factor to affect the dense medium stability and fluidityUnder the same dense medium suspension density，higher coal slime content resulted in slower suspension density decline and better dense medium stabilityCoal slime content required for stability of dense medium suspension variedDense medium suspension of higher density could become stable with less coal slime contentThe effect of coal slime content on the fluidity was opposite to that on stabilityHigher suspension density and coal slime content could lead to higher viscosity and fluidity deteriorationIn the labscale dense medium separation，20% of coal slime content was optimal with the lowest mismatch rate acquired in suspension density of 1.50 g/cm3