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Types and Selection of Glass-Lined Agitators
Types and Selection of Glass-Lined Agitators
In stirred reactors, agitators are key for accelerating reactions, enhancing heat transfer and mixing. Selection depends on material properties and process needs.   Main Types   Paddle agitators Simple structure (flat/folded blades). Flat blades create tangential flow (better with baffles); folded blades have more axial flow. Diameter 1/2-4/5 of the container, 20-80r/min. For fluid circulation or medium-high viscosity materials, low cost but limited axial flow. Propeller agitators Like marine propellers, high speed (7-15m/s tip speed), strong axial flow, large circulation but weak shear. Diameter 1/4-1/3 of the container. For low viscosity, large flow (e.g., liquid mixing, preventing sedimentation), better with draft tubes. Turbine agitators Most used (open/disk types, flat/curved blades). 300-600r/min, balanced shear and circulation. Handles low-medium viscosity fluids, suitable for mixing, dispersion, heat transfer. Curved blades reduce power and protect fragile particles. Anchor/screw agitators Anchor has diameter near container’s, low speed (0.5-1.5m/s tip speed), for fluids
August 22, 2025 476
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