A propeller stirrer is an axial-flow impeller used in both laboratories and industrial settings to efficiently mix low- to medium-viscosity fluids. It operates by drawing material from the top and pushing it toward the bottom (or vice versa), creating a circular turnover that ensures homogeneity. [1, 2, 3]
Key Features
Flow Pattern: Primarily generates axial flow (movement parallel to the stirrer shaft), which is ideal for “top-to-bottom” mixing and preventing sedimentation.
Operating Speed: Typically used at medium to high speeds (e.g., 200–2,000+ RPM) to maintain high fluid velocity.
Low Shear: Unlike high-shear dissolvers, standard propellers provide minimal shearing forces, making them suitable for sensitive products that might be damaged by aggressive mixing.
Material: Most are made o…
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