This article details the design, construction and operation of Sigma Mixer commonly used for mixing of high viscosity materials. The industrial applications for which Sigma Mixer is used are listed.
Media : Solid Powders, Dough, Viscous Paste
Mode of Operation : Batch Mixing
Design and Operation
Mixing Vessel - The sigma mixer consists of a W-shaped horizontal trough containing two sigma shape mixing blades rotating within.
Mixer Blades - The clearance between the external periphery of the blades and the internal wall of the mixing vessel is generally in the range of 2 – 3 mm. The clearance may be higher depending on the properties of the materials being mixed.The two blades are positioned tangentially or may overlap each other.