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Impeller의 類型이 高粘度 液體의 混合에 미치는 影響
鄭泰秀,尹雲榮 成均館大學校 1982 論文集 Vol.32 No.-
Effectiveness of six types of rotating agitator in the batch mixing of high viscous liquid was studied in a vessel of 125mm diameter by measuring power input, mixing time and energy which is the product of power input and mixng time. The mixing time was measured by electrical conductivity of sodium chloride solution which was added as a tracer. The six types of agitators used were a four-blade paddle, a four-layer two-blade paddle, a six-blade turbine, a helical screw, a helical ribbon and an anchor agitator. The results are as follows: 1. For a helical ribbon, an anchor and a helical screw agitator, the mixing time was inversely proportional to stirrer speed and decreased in the order of a helical ribbon, an anchor and a helical screw agitator in the most range of rotational speed. 2. The power consumed for all agitators was proportional to the rotational speed and increased in the order of a helical ribbon, an anchor and a helical screw agitator in the most range of stirrer speed. 3. The anchor agitator consumed the least energy for stirrer speed in the range of 30-7-rpm, and beyond 70rpm the helical ribbon agitator consumed less energy than the anchor and helical screw agitators. 4. The two types of paddle agitators and the turbine agitator have been found not good enough to be used in the mixing of high viscous liquid in comparison with the other three impellers mentioned above.