Four different helical ribbon impeller combinations were used to study the powder mixing in a stirred tank with diameter of 0.48 m. The effects of rotation speed, powder filling level, impeller combination on the mixing performance, and the powder mixing performance at the axial and radial cross were investigated. The results showed that the rotational speed was the important factor of effect the powder mixing. The mixing factor π3 at rotational speed of 44 r/min fell by 30% and 50% than the speed was 26.5 and 8.7 r/min. The extra small impeller installed inside the big impeller could increase the power consumption, but significantly reduce the mixing factor π3 50% at the rotation speed of 44 r/min, enhanced the mixing performance.
Junxi LIU Zhengming GAO Boxue MA Yuyun BAO Ziqi CAI
. Powder Mixing Performance in Stirred Tanks with Combined Agitators[J]. The Chinese Journal of Process Engineering, 2018
, 18(1)
: 63
-68
.
DOI: 10.12034/j.issn.1009-606X.217232
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