Abstract

A continuous mixer having a series of end-to-end mixing compartments each with two parallel shaft-driven agitator ribbons arranged for folding a product into the middle and for end-to-end mixing, as in a batch mixer. As the product is being mixed in each compartment it is gradually and continuously transferred at a controlled rate to the next compartment for further mixing. The completely mixed product in the last compartment is discharged continuously at a rate substantially equal to the rate of transfer between compartments. The mixer has steam jackets for heating each of the compartments so that the mixer may be used for cooking. By adjusting the steam pressure, the amount of heat going into each compartment can be controlled to suit the heating requirements of a variety of products. For example, the compartments may be heated to progressively higher temperatures to prevent burn on.