Every process involves mixing of materials. This can involve mixing dry ingredients, wet ingredients, or mixing dry ingredients with wet ingredients. The types of mixers vary as much as the characteristics of the ingredients to be mixed. An agitator mounted on a tank can provide mixing of thin liquids, while a double arm mixer is designed to mix very viscous materials such as dough, or pigments.

The major types of processing plant mixers include:

● Change Can – Vertical batch mixers in which the container ore “Can” is separate unit placed under the mixing head.

● Continuous – ZigZag, Pug Mills – These are continuous mixers.

● Double Arm – these are mixing and kneading machines that have two counter rotating blades in a rectangular trough that is curved at the bottom to accommodate the mixing arms. The mixing arms are driven by gearing at both ends. There are several types of blades, and different types of product discharge including tilting the mixing trough to dump the product out.

● Dispersers – Similar to agitator drives, this type of mixer has a long shaft with a blade mounted on the bottom of the shaft. The shaft is lowered into the tank and rotates at very high speeds to create and intensive liquid mixing environment.

● Intensive – These include Henshal mixers, and Papenmeier mixers which have a mixing blade mounted in the bottom of a bowl creating the same mixing action as a blender.

● Nauta Mixers – These are conical shaped vertical batch mixers that have a screw that rotates around the side wall of the cone while the screw is rotating to lift the product up while it is rotating.

● Ribbon and Paddle – Batch mixers with a center shaft that runs the length of a trough. The shaft can have single or multiple ribbons that agitate the material in the trough, or plow blades or paddles that agitate the material to be mixed

● Double Cone and Twin Shell or “V” blenders – These are batch tumble mixers, which turn end over end to mix the product.
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